Showing 50 items
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Federation University Historical Collection
Scientific Instrument, Weston, Photronic Cell
... electrical currents... pins bakelite experimental electrical currents lighting ...The photronic cell used in electrical experiments to demonstrate control of currents and lighting.Black bakelite circular case with two socket pins. Circular open top with tiny copper pins around the edge. Box Black and whiteName of maker and item: WESTON PHOTRONIC CELL MODEL 594 PAT PEND NEWARK N J U S Aweston, photronic cell, socket pins, copper pins, bakelite, experimental, electrical currents, lighting -
Wannon Water
Brush
... to avoid conductivity of electrical current... to avoid conductivity of electrical current The brush/comb was used ...The brush/comb was used for identifying coating defects in steel mains. It was attached to a low voltage electrical supply and then used to brush along the steel pipe to test for faults in the coatings. If there is a fault in the coating, a spark would occur. The coating was propably coal tar Possibly used in the Otway Water Supply SystemRusted metal comb/brush, one side top half painted black to avoid conductivity of electrical currentpipes. maintenance -
The Ed Muirhead Physics Museum
Galvanometer, Tinsley
... Used to measure electrical current. ... electrical current. ...Used to measure electrical current. Cylindrical reflecting vertical galvanometer. Case made of black enamelled metal and standing on three legs for levelling.Label “Part 2”. Label “Purchase of University Commission”. Plaque on front “Reflecting galvanometer, link in aperiodic link out ballistic, H. Tinsley & Co. Ltd No. 41545” -
Ballarat Tramway Museum
Functional object - Traction Return Current Rail Bond, c2022
... Showing how tramway electrical current was returned... electrical current was returned to the electrical sub-station via ...Showing how tramway electrical current was returned to the electrical sub-station via the rails.Demonstrates an earth return bonding piece.Traction Return Current Rail Bond, consists of a multi strand copper cable abt 19mm dia. and 530mm long, with block of steel (25x25x43mm) brazed onto each end. The block of steel gets welded to the outside of the rail head at or near a joint in the rails. The bond is to ensure a reliable return current as the fishplates and bolts are subject to dirt and rust which can inhibit the current.tramways, electrical engineering, earth return, bonds, trackworks -
Stawell Historical Society Inc
Instrument - Realia, Astor Model TV-1 Oscilloscope, 1960's
... Instrument which demonstrates waveform of any electrical...Instrument which demonstrates waveform of any electrical ...Instrument which demonstrates waveform of any electrical current. The waveform shows the amplitude of a signal on a Y axis and time is shown on the X Axis.Grey case with black front containing dials and small round cathode screenCloud Chamber Spray Style Supplied By Townson and Mercer (dist) Pty Ltdscience, education -
Stawell Historical Society Inc
Instrument - Realia, Large Dial Type Frequency Meter, 1960's
... Use to measure frequency of electrical alternating current...Use to measure frequency of electrical alternating current ...Use to measure frequency of electrical alternating current. Used at Stawell Technical School.Large Black Cast Metal case with white DialCycles Per Second Frequency Meter A.G.E. 230Vscience, education -
Ballarat Tramway Museum
Functional Object - Electrical Meter, 24/01/2011 12:00:00 AM
... Electrical Current or Amp Meter mounted onto a piece... Object Electrical Current or Amp Meter mounted onto a piece ...Possibly has a strong association with the Ballarat depot and the equipment used there.Electrical Current or Amp Meter mounted onto a piece of timber. Meter has the current marked in Amps from 0 to 15. No manufacturer or use details known, would have been collected from the depot. Could have been used for the grinder or wheel lathe. Wood block has four mounting holes, bevelled edges and opening for cables on the lower edge. White meter face, has a marked reading of 6Amps. Rest of the meter is generally painted black except for the bottom and rear of the timber which is unpainted. trams, tramways, depot, meters, electrical equipment -
Deaf Children Australia
Hearing Aid, Sonotone Carbon Hearing Aid, "1930s"
... electrical current, was used to provide some amplification prior..., which can be made to amplify electrical current, was used ...The first electrical hearing aids were carbon and were made possible by the invention of the carbon microphone and were made between 1900 and 1939. Carbon, which can be made to amplify electrical current, was used to provide some amplification prior to the invention of vacuum tubes. Later models often came with mechanical (carbon) amplifiers to try to boost the amount of amplification. The carbon microphone was originally invented for use in the telephone and had the properties of being able to modulate current. It is this property that made it useful in the early electrical hearing aids. An example of a carbon hearing aid. This has an imitation tortoise shell casing. Round dark red and black imitation tortoise shell carbon hearing aid with clip for attaching to clothing, and a slide for adjusting the sound (?) a cord split between a plug and a speaker (?)."SONOTONE/REG U.S.P.A./292392/MADE IN U.S.A./ELMSFORD, N.Y." on bottom of unit. "SONOTONE" on plug. "PAT RE 21030" on speaker? deaf children australia, hearing aid, sonotone -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Electrical, fittings 3 bakelite 1 brass c1930, c1931
As supply of electricity became available in the Moorabbin Shire c 1920 homes gradually changed from Gas lighting to Electrical lighting and bakelite was used for fittings. Bakelite was a safe non-conductor of the electric current. Housewives, who had ironed clothes with flat irons heated on the hearth of open fires, were delighted to be able to stand on a chair and remove the light globe and plug in their new clean and efficient electric iron. The supply of electricity to homes in the City of Moorabbin in the early 20th Century brought many welcome changes to domestic and commercial life 3 Electrical, fittings c 1931 a) a bakelite plug and socket Made in Australia b) a bakelite bayonet fitting Made in England ;c) Bakelite screw type with no markings d) A large brass and porcelain screw type with no markings L8 a) Australian Made / PIMI b) British Made in England c) No marks d) no marks electricity, electric lights, electric irons, bakelite, market gardeners, early settlers, moorabbin shire, mechanics institute cheltenham, postworld war 11 settlers, housing estates moorabbin 1950, bentleigh, ormond, moorabbin, cheltenham, clark judy, reed gladys, reed george -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Manufactured Object, Torch 'Eveready' c1950, c1950
George Reed was a draftsman living in the City of Moorabbin c 1950 1899, David Misell, invented this "electric device" ( torch / flashlight) powered by "D" batteries laid front-to-back in a paper tube with the light bulb and a rough brass reflector at the end. Misell assigned his invention over to the American Electrical Novelty and Manufacturing Company owned by Conrad Hubert. In 1905, Hubert changed the name again to The American Ever Ready Company, selling torches / flashlights and batteries under the trademark Ever Ready. In 1906 the British Ever Ready Electrical Company was formed for export of batteries; it became independent in 1914. The American Ever Ready Company became part of National Carbon Company in 1914. The trademark was shortened to Eveready. In 1986, Union Carbide sold its Battery Products Division to Ralston Purina Company becoming the Eveready Battery Company, Inc. and in 1992, it bought the British Ever Ready Electrical Company. Prior to March 1, 1980, the company's alkaline battery had been called the Eveready Alkaline Battery (1959–1968), Eveready Alkaline Energizer (1968–1974) and Eveready Alkaline Power Cell (1974–February 29, 1980). On March 1, 1980, it was rebadged under its current name, Energizer. 2019 production plant in Portage, Wisconsin, but the majority of batteries are made in China and there are also numerous production facilities outside the US. This is an industrial strength Eveready Torch made in England and was used by George Reed, a draftsman, who lived in Bentleigh , City of Moorabbin in mid 20th CLarge 'Eveready' industrial hand torch/ flashlight with rubber protective coverEVEREADY /MADE IN ENGLAND clothing, manufactured lace, dressmaking, blouses, theatrical props, lights, torches, lighting, early settlers, moorabbin shire, mechanics institute cheltenham, postworld war 11 settlers, housing estates moorabbin 1950, bentleigh, ormond, moorabbin, cheltenham, , clark judy, reed gladys, reed george -
Federation University Historical Collection
Instrument - Electrical Instrument, Everett AC Wattmeter, 1923
Would have been used by staff and students of electrical Engineering at the School of Mines, Lydiard St. campus up until the start of the Mount Helen campus E building third floor. The meter would have had limited use in classes until 2009. This Wattmeter became part of the historical collection in 2011 after the movement of Engineering out of the E building. In working condition and a good example of early 20th century electrical instruments.A polished natural timber case with partial flip top lid and leather carry handle, housing a single phase AC Wattmeter, rated at 170 volts , 30 amps Scale 0 to 5 kilowatt. Serial no :210088Schematic diagram on inside lid showing how to connect the Wattmeter to measure a 3 phase balanced load. Paper sticker on top "1/92" Information for voltage and current ranges painted with white paint on left hand side by Voltage terminals Voltage terminals labelled A and N Also white on black "W8" on same surface Aluminium plate "67" on right hand side near current terminals which are engraved To A and Ti A to indicate current flow direction Aluminium sticker with Ballarat CAE Electrical Engineering by carry handleeverett instruments, single phase, wattmeter, electrical, scientific instruments -
Federation University Historical Collection
Magazine, ASEA magazines, 1953/58, 1953 to 1958
collected by Ballarat School of Mines Principal G.H.BeanlandMagazines bound in ASEA folder, blue spine and black cloth boardselectrical engineering, generators, graham beanland, power stations, voltage control, electrohydraulic governor for water turbines, high voltage dc transmission, oil-minimum contraction circuit-breakers, lightening arresters, air-blast circuit breakers, testing circuit breakers, closing mechanisms for high voltage circuit-breakers, outdoor isolators, series capacitors, capacitor voltage transformers, guide to current transformers, routine testing of power tranformers, generator -
Federation University Historical Collection
Scientific Instument, Capacitor
DEFINITION microfarad Posted by: Margaret Rouse WhatIs.com Contributor(s): Kenda, Jack Clements The microfarad (symbolized µF) is a unit of capacitance, equivalent to 0.000001 (10 to the -6th power) farad. The microfarad is a moderate unit of capacitance. In utility alternating-current (AC) and audio-frequency (AF) circuits, capacitors with values on the order of 1 µF or more are common. At radio frequencies (RF), a smaller unit, the picofarad (pF), is often used. This unit is equal to .000000000001 (10^-12) µF. In RF scenarios, capacitances range from about 1 pF to 1,000 pF in tuned circuits, and from about 0.001 µF to 0.1 µF for blocking and bypassing. At audio frequencies (AF), capacitances range from about 0.1 µF to 100 µF. In power-supply filters, capacitances can be as high as 10,000 µF. Capacitor, 1/3 M.F.D. (microfarad) within wooden insulating box. Two terminal posts set in an insulating box. Maker's name and place 1/3 M.F.D No. 34402scientific instrument, capacitor, electrical engineering, laboratory -
Federation University Historical Collection
Scientific Instrument, DC Voltmeter/Ammeter: Model D.14, 1950s
... wooden frame. Direct current - moving coil Volt-Ammeter Black ...Used for teaching chemistry principles of measuring electrical power.A teaching / demonstration model with large scale and transparent panels. Polished wooden frame. Direct current - moving coil Volt-AmmeterBlack tape on front panel "PHYSICS"chemistry, electrical power, physics, voltmeter, ammeter, direct current, scientific instrument -
Federation University Historical Collection
Electrical Equipment, AC/DC Power Supply Unit - Rectifier
... A rectifier is an electrical device that converts alternating current ...What device converts AC to DC? rectifier A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current. The unit was used at Ballarat School of Mines in the Maths, Science and Physics Departments.Grey metal unit with Dials on the front and vents at the back. Handle for carrying. Two switches for turning on and off. Yellow sticker - SMB - with number 116071. Engraved on back - S.M.B.. Maths / Science / Physics Sticker on cord indicating inspection of unit - 13/04/2005. Tag Number - 032735alternating current, direct current, ac, dc, rectifier, electrical, ballarat school of mines, science, maths, physics -
Federation University Historical Collection
Electrical Equipment, AC / DC Control Unit - Rectifier
... current ac dc electrical ballarat school of mines science maths ...The unit was used at Ballarat School of Mines in the Maths, Science and Physics Departments.Grey metal unit with Dials on the front and vents at the back. Handles for carrying. Two circuit breaker switches, two DC output sockets, two AC output socketsYellow sticker - SMB - with number 116069. Engraved on back - S.M.B.. Maths / Science / Physics Sticker on cord indicating inspection of unit - 13/04/2005. Tag Number - 032725alternating current, direct current, ac, dc, electrical, ballarat school of mines, science, maths, physics, ac/dc, scientific instrument -
Federation University Historical Collection
Book, Industrial Electricity
The book was published for the use of personnel of the army, navy, marine corps and coast guard. The book was used by Charles Bacon who studied at the University of Nevada in the late 1930s/early 1940s. Bacon worked at Bunker Hill Mines and Kellogg Idaho, before arriving in Australian in 1951. He worked for CN Myers, a company involved with paper converting. CN Myers was a family business (on Charles Bacon's maternal line).Blue soft covered book of 607 pages. Chapters include electrical Algebra, fundamentals of Electricity, Wiring, Magnetism, Armature Wiring, Generators, Motors, Controllers, Geometry and Trigonometry, Alternating Current, AC Circuits, Transformers, Polyphase Systems, Alternators, Induction Motors, Stator Winding, Multi-Speed Induction Motors, AC Controllers, electrical instruments, Electron Tubes, Welding Systems, Welding Systems, electrical Drawings. charles bacon, mining engineering, metallurgy, university of nevada, armed forces, world war 2 -
Kiewa Valley Historical Society
Meter Millivolt, after 1950
This milli-volt meter was manufactured after 1950 and used by the SEC Vic (Kiewa Hydro Electricity Scheme) from that date until late 1900's. It was used to measure very small voltages associated with the operation of the various Hydro Generators. The readings were able to be shown by the resistor in use in the current circuit. During this time period, high quality testing instruments were either sourced from Europe or England.This milli-volt meter is very significant to the Kiewa Valley as it was used by those electrical technicians, who were part of the Kiewa Hydro Scheme. An "off spin" from the Scheme was the beginning of an explosion in "human" resources into the Kiewa Valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both industrial and larger residential community. This evolution in the Kiewa Valley created a change, not only in the "physical" landscape(better roads and infrastructure), but also the socio-economic growth within the Valley allowing other "tourist" based industries to expand within the valley and Alpine areas.This millivolts DC meter was used in the 1950's. It is contained in a wooden box and has two coloured (red/black, positive and negative) screw tight knobs which have bake-lite connections. It also has a covered (black tin) view meter marked from zero to 10 millivolts. Underneath this and within a round bake-lite is a small adjustment screw. The top of the box is fastened onto the main structure by six brass screws. The back of the structure is fastened by eight brass screws and there are four small bake-lite rest knobs.On the face of the millivolt compartment , and at the top "TO BE USED WITH DIAL HORIZONTAL TEMP. COEF. +- .08 % PER oC. Underneath the scale "MILLIVOLTS D.C. F.G." (LEAD RESIS. .05 OHMS)" underneath and to the left "MADE IN ENGLAND BY" "EVERSHED & VIGNOLES Ltd" and to the right "No. 857842" underneath Regd. TRADE MARK MEGGERkiewa valley tourism, victorian alps, alternate energy supplies, alpine population growth -
Kiewa Valley Historical Society
Timer Mechanical, Circa 1950
This Timing Relay is quite a large (industrial type) apparatus. The Timer is started by having a voltage of 250 volts direct current (as supplied by batteries). A DC motor then rotates driving into a clockwork mechanism, the output of which is an arm rotating at the same speed as a minute hand on a clock. Attached to this arm is a mercury switch which tips and makes an electrical circuit operate in a sequence control system. The sequences that use these timers are when starting and stopping Hydro Generators. They check that the machine has connected to the power system grid before 20 minutes duration. Brakes must go on for a set time when shutting down a generator slowing at the right speed as measured by this apparatus. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This Timing Relay apparatus is very significant to the Kiewa Valley as its use was introduced during the Kiewa Hydro Scheme. Although only a relay apparatus, it was however part of the explosion of human resources into the valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both an industrial and a larger residential community. This evolution in the valley created a change, not only in the "physical" landscape but also the socio-economic expansion which permitted other "tourist" based industries into the valley. This Hydro Scheme was instigated by "the Government of the day" as a bold move and was the major force behind the acceptance of World War II refugee and "technical" workforce. Inclusion of skilled and unskilled migration into the Australian environment was of a higher priority than a selective quota system of later years.. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual, multi-cultural diversity of later years.sec vic kiewa hydro scheme, alternate energy supplies, alpine population growth -
Kiewa Valley Historical Society
Meter Multi General Purpose, circa mid to late 1900's
This general purpose Multi-meter was manufactured after 1950 and used by the SEC Vic (Kiewa Hydro Electricity Scheme) from that date until late 1900's. It was used to measure very small voltages associated with the operation of the various Hydro Generators. The readings were able to be shown by the resistor in use in the current circuit. During this time period, high quality testing instruments were either sourced from Europe or England. This particular meter was manufactured in the Netherlands. This type of "old" analogue meter was replaced by digital meters whose electronic components are a fraction of the size of the older analogue ones.This analog General Purpose multi-meter is quite a large (for handheld mobile) apparatus which permits the easy monitoring of electrical variations within the large SEC Victoria Hydro Scheme's electrical generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This General Purpose Multimeter is an analogue meter i.e. it has a needle arm that moves across a scale of divisions. This is a large(hand held) device due to the mechanical movement system within and the large size of its electronic components of its circuitry.There are two black bake-lite push buttons operating the wire inserts Positive/negative leads at the top. The meter (protected with a glass window) has clearly marked graduations (top - volts, bottom amperes). Below this are two bake-lite dials (left "potentiometer the right one measuring range selector). Below this is a "dial" switch to input the desired resistance measuring range "V" Front "H&B ELIMA" and to the right Elavi 15n. 0n the front side is a label "STATE ELECTRICITY COMMISSION OF VICTORIA TRANSMISSION DEPT E.C.No." On the bottom of the base is a stenciled layout of the battery "layout" including the fuse . The information notice is presented in five languages starting with German, English,French, Italian, Spanish and Dutchsec vic kiewa hydro scheme, alternate energy supplies, alpine population growth -
Kiewa Valley Historical Society
Case for G.P. Multimeter, Circa 1950
This leather case holder for a general purpose Multi-meter( KVHS 0307 (A)) was manufactured after 1950 and used by the SEC Vic (Kiewa Hydro Electricity Scheme) from that date until late 1900's. It was used to measure very small voltages associated with the operation of the various Hydro Generators. The readings were able to be shown by the resistor in use in the current circuit. During this time period, high quality testing instruments were either sourced from Europe or England. This particular carry case was manufactured in the Netherlands. This carry case for an analog General Purpose multi-meter which is quite a large (for a handheld mobile) apparatus.The bag however permits the easy monitoring of electrical variations within the large SEC Victoria Hydro Scheme's electrical generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This leather case is to provide protection for this mobile G.P. Multimeter, therefore it is made from thick leather. It has a carrying strap from a thick "D" chromed link. This link is fastened to the main cover by a looped leather strip with a black coloured rivet. All the fasteners are either chrome or black coloured rivets. The front, which when opened back exposes fully the inside of the case. It is clip fastened to the lower section of the front piece which also can be pushed back allowing the meter to be removed from the frontal position. There is a strip retaining strap slightly higher from the mid point. This is fasted by a black press stud. There are two "L" shaped tin protrusions allowing the meter to slide only down the case until it rests on these shelves. This provides for an empty space for minimal storage,.On the front bottom and below the clasp is a tag "STATE ELECTRICITY COMMISSION OF VICTORIA TRANSMISSION DEPT."sec vic kiewa hydro scheme, alternate energy supplies, alpine population growth -
Kiewa Valley Historical Society
Meter AVO, circa 1930 to 1951
When this AVOMETER was being utilised in the early 1950's it was at the "leading" edge of electrical measuring instrumentation.The first meter was produced by Automatic Coil Winder and Electrical Equipment Co. in 1923. This model was produced in the time from 1933 to 1951 when it was superseded by the most popular model, Model 8 (1951 to 2008).This AVO meter brought the measuring of three electrical power indicators i.e., amps, volts and ohms into one measuring unit. By using a "one fits all" unit, the carrying of separate measuring devices was reduced considerably. The need for a mountainous and a large area of operational requirements, such as the SEC Vic Kiewa Hydro Electricity Scheme, to minimise the weight of equipment carried by electricians and technicians was of the utmost relevance. The significance of this meter to the Kiewa Valley region relates to the impact of modern technology (at that time) upon a mainly rural environment. This equipment shows how the boost of "modern" equipment into the area because of the "Hydro Scheme" was facilitated a lot faster than would have taken under "normal" evolutionary time. The speed of information on all "new technology" had a relatively slow assimilation rate to those living in rural communities. This AVOMETER is a Model 7 MKII, production pre 1951. This meter measures electrical Amps, Volts and Ohms and has two internal batteries for its power. The main casing is made from aluminium with a bake-lite front. The front has a "window" detailing, with a needle pointer, the amount of electrical power being tested. There are two big dial switches, detailing Direct Current(DC) and Alternating Current(AC) when reading measurements of Ampere, Voltage and Ohms for power. This meter took the place of three or four meters used earlier. Modern meters (2000 onwards) have become digilised and are considerably lighter in weight and smaller. There are two electrical connection leads (one black and one red) each has a removable clasp and is 125cm long.Molded on the front centre panel " UNIVERSAL AVOMETER". Below this and above the left hand dial "D.C. SWITCH" .Above the right hand switch the right "A.C. SWITCH". On the left of each switch is an arrow pointing to it.The left switch is marked with a "+" and the right one with a "-". There is a "divisional 2" mark. Between and below the dials is "CUT OUT" plunger.electrical meters, electrical equipment, sec vic., state electricity commission of victoria, mt beauty, bogong village -
Kiewa Valley Historical Society
Drill Bit Diamond, circa mid to late 1900's
This hollow core bit has hard cutting inserts for drilling into rock. It was used to drill and recover 50mm diameter (most common size) rock cores. The rock cores were assessed by geologists and engineers to provide information for design of structures such as tunnels, dams and underground power stations (eg. McKay Creek Power Station, West Kiewa Power Station). This type of bit was also used where damage to the surrounding rock had to be minimised. The Diamond Drill Bit,used in the early 1900's, when it was primarily used as a method of sampling rock for ore deposits and oil exploration resulting in a "coring" of rock. The use of "coring" to obtained samples for the SEC Kiewa Hydro Electricity Scheme(1920's onward) was to analyse the core to obtain temperature and rainfall patterns shown by the levels of layered solidified soil(rock). This diamond drill would have been used in the early 1900's to provide a sub strata map of temperature and water patterns (over an long period of time). This was a pre requisite to any decisions about the viability of the region to provide the water needed for a successful hydro electricity scheme.This diamond drill for core sampling was at the forefront of the analysis whether to construct a hydro electrical facility in the Kiewa Valley and the adjoining alpine region. The rock core samples produced were assessed by geologists and structural engineers. It was only after extensive core drilling covering the region that solid scientific evidence could be provided to start the "SEC Vic Hydro Electricity Scheme" within its current boundaries.This "diamond" drill bit has eight "teeth" at its cutting edge. The drill creates an 55mm hole in extremely hard rock material to obtain 50mm core samples.. Three quarters down the shank it has thread screw channels to attach the bit to the drill pipe. The coring pipe attaches via screwing it onto this bit. Core samples are the main objective of this tool.alternate energy supplies, alpine feasibility studies temperature, rainfall, sec, kiewa hydro electric scheme, electricity -
Kiewa Valley Historical Society
Tester Direct Current, mid 1900's
This tester was used between 1950 and 1980's. As part of the Occupation, Health and Safety requirements, equipment used to monitor the performance of electricity producing generators, regularly, hand held testers were used to check the insulation and the "earth" pin were up the the required operational levels. As the generators and their ancillary monitoring equipment was spread over a large area and cumbersome to service small hand held devices were required. These had to always be safe for the user to operate. A selected range of high quality meters were recalibrated every two years in the Meter and Calibration Laboratory at Yarraville(near Melbourne) This meter is very significant to The Kiewa Hydro Electricity Scheme because it was an integral part of maintaining the electricity producing water driven generators of the power stations. The reason why this meter was so essential is that provided the safety check on equipment used to monitor each Hydro Generator that they were complying within the grid network parameters. Grid parameters are set so that if there is an electrical fault on the system, that fault can be attended to with a very small change in the output stability of each generator. It is essential that the voltage of the network remain within the set limits. Generators are at Dartmouth, Mackay, Clover, West Kiewa, Yarrawonga, Cain Curran and three Power Stations in the Thornton area.This hand driven current generator produces 500 volts by winding the handle(on funnel curved side) to keep the voltage constant(one minute per test). The whole body is made from caste aluminium. One of the functions of this meter is to test the isolation resistance of any equipment being tested. This is to see if that equipment is safe to handle(no electrical shocks). The second function is to test the earth pin of any portable electrical equipment. The turn key on one side can direct which function is required(marked insulation or continuity). On the top side(enclosed in a glass fronted marked scale) is a continuity scale(top) and an insulation scale(bottom). This is covered , when not in use by "flip up" lid with manufacturer's details and name of the instrument. Opposite the winder are two screw tight knobs. One marked earth(left side) and one marked line(right side). On the top and next to the glass windowed scales in a post manufacture SEC Vic equipment equipment ID number. For carrying purposes there is chromed steel (fold together) handle.The bottom of the unit has two metal "feet" 150mm long by 114mm wideManufacturer's details on top side "MEG" underneath "INSULATION AND CONTINUITY TESTER" below this "constant 500 VOLT pressure" below this "REGISTERED MEG MEGGER TRADE MARK" below this "REG DESIGN NO. 690326" below this "UNITED KINGDOM PATENT Nos. 193746, 197178, 198182, 202062, 202398, 204649, 350715" below this "SUPPLIED BY THE GENERAL ELECTRIC Co. Ltd OF ENGLAND" below this "MAGNET HOUSE, KINGSWAY LONDON W.C.2" 'sec vic kiewa hydro scheme, alternate energy supplies, alpine feasibility studies temperature, rainfall -
Kiewa Valley Historical Society
Meter Ammeter Recorder, Circa 1950
This testing voltmeter recorder was last certified by SEC Vic laboratories on the 17/4/77. It was used extensively as mobile recorder placed for periods of one month at locations experiencing unacceptable fluctuations of power. These locations would cover the North East regions of Victoria. They cover voltage drops at domestic and business properties especially those that were experiencing regular fluctuations(daily) at approximately the same time of the day. As the electrical network is required to operate within a set level of voltage, fluctuations outside of this has to be investigated and necessary remedial action taken. This is especially so for rural properties where power "drainage" can occur through animal/bird and tree interference. It can also be the result of defective wiring and overloading at peek operational times (milking machines).This mobile voltage recorder is very significant to the Kiewa Valley because it highlights the difficulties that can occur in maintaining a power supply that experiences fluctuating power demands by the rural industries that it supplies. The requirement of a mobile testing apparatus to cover the various sections in the Kiewa Valley and other rural areas in the northeast region is one of necessity as electricity once connected to a rural property is a labour saving supply as generators on rural properties require a higher degree of maintenance an ultimately at a higher cost. The testing of the SEC Vic supplied electricity to rural properties,those who had previously run on generators, had to be quick and unassuming with certainty of correct supply levels.The mechanism of this voltage recorder has been installed(by the manufacturer) into its own protective wooden box. This box has a front (swing open) lockable section which permits direct access to the installed measuring equipment (for servicing and data collection). The top section of the box has two screw on terminals for access to the machine being tested. This tester has its own inbuilt ink supply facilities and a mechanical clockwork device that unwinds a roll of paper onto a second roll at a rate of 10 mm per hour. The recording chart is marked with time slots against voltage. There is a recording arm which has an ink pen at the end. Both arm and pen carry the ink supply from the ink reservoir, located on the left side of the cabinet door in specially constructed bottle holder( three small bottle capacity). To record a suspect power problem to a home or business establishment the voltmeter is connected to a power supply outlet being tested and wind the recording clockwork mechanism (gives a four week running time). Before leaving the recorder in situ the electrician checks to see if the chart is recording the correct voltage and that the clock mechanism is advancing correctly.On the front of the access "door" at the top a metal label "RECORDING AMMETER" below this "MURDAY SYSTEM" below this "ALTERNATING CURRENT" and below this the manufacturer's registered number "No. 139156" Below this is a metal tag with State Electricity Commission of Victoria Electrical Engineer's Section equipment number "338" Below these tags and above the viewing window is the manufacturer's dtails "EVERSHED & VIGNOLES Led LONDON"sec vic kiewa hydro scheme, alternate energy supplies, alpine feasibility studies temperature, rainfall, power outages -
Kiewa Valley Historical Society
Electric Megger (Insulation Tester) and its case
Megger as the device was called, is in fact its brand name. It is a device that supplies a DC (direct current as per car batteries) voltage to enable testing of electrical apparatus. This particular device produces 250volts DC when the handle is turned vigorously. If an electrical device, such as a kettle or toaster, blew a fuse or tripped a circuit breaker, when switched on, then it must be checked electrically before any more use. Following the repair of the faulty item a megger would be used to check if either of the AC 240volt plugs leads were touching the metal case (earth). The output leads of the megger would be connected with one to the earth (metal case) and the other to each of the power connections in turn. A good megger reading of 50,000 ohms (resistance) would enable the device to be returned to service. A reading of zero ohms resistance would mean that it would again blow a fuse, and was therefore unsafe to use. In the electrical industry e.g. the former State Electricity Commission, a megger would be used to test lots of similar item in sequence. Because of the vigorous job of winding the handle, two persons were often used to save time. One would crank madly whilst the other shifted the leads. This particular megger is of a small voltage, but other meggers are bigger and have a few ranges of DC voltages able to be selected. The optimal megger for large Generating machines was motor driven megger. This was applied to the device being tested for a duration of approximately 30 minutes with reading of the resistance taken at regular intervals.All equipment belonging to the State Electricity Commission of Victoria was labelled with a metal plaque attached to it. The SECV constructed the Kiewa Hydro Electric Scheme in the Upper Kiewa Valley and on the Bogong High Plains. The scheme began in 1938 and finished in 1961 when this megger was used and also possibly later as the SECV remained to maintain and operate the Scheme. This megger is of significance in relation to the advancement of technology.A rectangular box in dark brown bakerlite casing. It has an agent's plaque fixed to the left of the face and on the right is the marker's recessed stamp. In the middle in a transparent window so the level of ohms can be read. The front also has two recessed fixing knobs in black. On one side is a crank handle with a knob that lifts up and is turned vigorously to create the voltage. The back has four recessed screws and four small leather pads. There is a hole on each side to insert wires. There are two copper insulated wires. The SECV Plaque states: State/Electricity Commission/of/Victoria/ Electrical Engineer's Section/ No.1747 The Agent's Plaque states: H. Rowe & Co. Pty Ltd/Melbourne & Sydney/Sole Agents/in Australia for/Evershed & Vignoles Ltd Maker's states: 500 volts/Megger/Regd Trade Mark/Made in England/Patent No/400728electrical meters, electrical equipment, fuses, safety, state electricity commission of victoria, mt beauty, bogong village -
Warrnambool and District Historical Society Inc.
Medal - Medal VHAS, Villiers and Heytesbury Agricultural Association, Circa 1880
Historical information: this medallion has historical details on three fronts. Firstly the Villiers & Heytesbury Agricultural Association. This association began with the first meeting held on May 17th 1853 at Woodford. The minutes of that meeting read “That in the opinion of this meeting, the formation of an agricultural association would be of great benefit to persons in this district engaged in farming and pastoral pursuits. It initially embraced the following: ploughing, agricultural produce, machines and implements, and livestock of all descriptions. The first show was held at Warrnambool on April 10th 1855 on a green bounded by Fairy, Henna, and Koroit Streets. It was held there until 1875 when it moved to the present Showgrounds site in Koroit Street. At the 37th Annual show in 1890 Warrnambool held its first Grand National Show, being granted by the Chamber of Agriculture in turn, in Victoria. It became known as the Warrnambool Agricultural Society in 1911. Secondly the winner, Mr Hugh Lennon. He was one of the most successful innovators and manufacturers of agricultural implements in early Australia. Although born in Ireland, he served an apprenticeship in Scotland in mechanical engineering. The Lennon plough became known Australia wide. For many years he operated his business at the northern of Elizabeth Street in Melbourne. He was active in local affairs. He died in 1886 at the age of 52. Thirdly, Stokes and Martin. Thomas Stokes came to Australia in the 1850’s and established a successful business at Mincing Lane Melbourne, manufacturing buttons, medals and tokens. Martin joined the partnership in 1873, which lasted until a disastrous fire in 1893. The business was renamed Stokes & Sons Pty Ltd and it became a public company in 1962. It is currently situated at Ringwood in the business of spare parts for electrical equipment The Villiers and Heytesbury Agricultural Association was a significant event and organisation within the Western District over a large number of years. It was one of the earliest organisations in the district and is testament to its importance to the agricultural, social, and cultural life of the district. It is significant that this particular medallion was awarded to an innovator in the ploughing industry and that it was made by a company which is still in business 130 years later. Circular copper medallion cast with Villiers & Heytesbury Agricultural Assoctn around edge with winner and event details engraved in centre. The reverse is cast with horse, cow and sheep standing above wheat sheaf and farm implements. The edge of the medallion is plain.Villiers & Heytesbury Agricultl Assoctn around rim. 1st Prize awarded to Hugh Lennon for double furrow plough, Warrnambool Oct 19 1880. Stokes & Martin Melbourne in small lettering on the reverse.warrnambool, villiers & heytesbury, hugh lennon, stokes & martin, lennon plow, lennon plough -
National Communication Museum
Equipment - Morse key, Postmaster-General's Department, circa 1920
A telegraph or Morse key, sends a series of electrical signals down a telegraph line or via radio frequencies; the signals are interpreted as Morse code, a binary form of language constructed of 'dots and dashes', combinations of which correspond to letters of the alphabet. The motion of the key acts to complete an electrical circuit between the sender and receiver, producing a short pulse 'dot' or longer 'dash,' the space between the code indicates a broken current or wave.Device used to transmit telegraphic messages in Morse code through the manipulation of electric signals. The metal 'key' sits in a central bracket on which it moves up and down aided by a spring, controlled by an operator pushing the black Bakelite knob on the protruding end of the device. The motion presses the key onto a circular metal disc, completing the circuit and sending an electrical pulse to the receiver. The apparatus is secured to a wooden base with wires attached to the terminals; a cut out section of the base suggests wires may have entered through this area, attaching to a battery.Printed ink on base: "PMG"telegraph, telegraphist, morse code, mechanisation -
Tatura Irrigation & Wartime Camps Museum
Rectifier, McKenzie & Holland, 1925
This object was installed at the Victory Hall, Tatura, to change main power (AC 240 v), to DC (direct current 30 volts). This supply was required to run the hall's picture show.An electrical devise which changes AC power supply to DC supply.Makers name; title object; Ref. to voltage, amps. AC and DC.rectifier, victory hall tatura, electrical converters -
Surrey Hills Historical Society Collection
Photograph, St George's Church of England, Mont Albert working bee, early 1923 (2), 1923
The foundation stone for St George's Church of England, Mont Albert was laid in 1886 on land donated by Edward Dyer and the first service was preached in January 1887. From 1904 until 1907 it was known as Holy Trinity, Surrey Hills. The original church was weatherboard and replaced by a brick one in the Gothic Revival style which was designed by local architect George J V Blackburne, who also designed the Wesleyan School at Surrey Hills. The building was partly funded by donations, profits from a bazaar and concert, and other people donated furnishings. The church had boundaries along Mont Albert Road and St Georges Road. In 1998 the Church was sold and converted into a complex of units. Its current address is 19 St Georges Avenue, Mont Albert. The purpose of this working bee in 1923 was to close up the double gateway, which in earlier times had been used for entry of by horse-drawn vehicles to the church grounds. 'Lugano' was built in 1893 for William Wilson, a prominent stonemason and importer of marble fireplaces. In 1903 it became the home of William Holmes who was Chief Electrical Engineer for the Victorian Railways. He designed the electrification of the Melbourne suburban network. 'Lugano' stayed in the Holmes family until the 1930s. Norman Carter took many photos of Surrey Hills and Mont Albert from the 1920s in particular of events and activities associated with the Church of England.Black and white photo of 6 men behind and in front of a picket fence, a section of which has posts and railings only. In front of the fence is a wide grassy verge on which a bench is set up for cutting lengths of wood. A large Victorian house ('Lugano') can be seen in the background and a lamp post with a street sign. Beyond the house are mature eucalyptus trees.churches, holy trinity church, anglican church, st george's anglican church, working bees, lugano, william holmes, william wilson, norman brodley carter