These are sales photographs for William Tatham Ltd. of Rochdale. These photographs are taken in the fitting shop at William Tatham Ltd. where final assembly would have taken place. A Tape Condenser is a device that receives the wide fibre web from a woollen card, divides it, and rubs each section into a sliver. The photographed machine was made by William Tatham Ltd, a textile engineering company based in Rochdale, UK. Established in 1866 Tatham developed innovative textile machinery and send their products to Australia and other countries around the world.Two black and white photos of a Tape Condenser in a landscape format. The first photo is of the front of the machine, the second is of the rear.8038.1 - Front - top margin: For description see over. Front mid right edge - Wm. TATHAM Ltd. ROCHDALE. Machine Maker Front bottom right corner - 1138 Rear - Showing new model Tape Condenser with all-Perspex Guards, new gear box type of main drive to Condenser. New mounting of all Tape Rollers, cross shaft drive to Variable Speed Gear Box for drive to rubber shaft and many other improved features. 8038.2 - Front mid right edge - Wm. TATHAM Ltd. ROCHDALE. Machine Maker Front bottom right corner - 1140 Rear - New Model Four-teir Tape Condenser showing rubbing motion side Note greatly improved guarding completely enclosing rubbing motion and gearing, also Variable Speed Drive to Rubbing Motiom via heavy ‘V’ Belt. The drive is taken by cross-shaft from the main gearing of the Condenser. Rubbing Motion has all roller bearing eccentrics throughout.textile machinery, tatham, wool manufacture, tape condenser

Solid wood 3 sided brown box with removable lid sitting on 4 circular shaped feet. Open front has dial and connectors. Inside is cylindrical coilMaker's plate: "AMSCO - ALLOCATING CONDENSER - S.T.L." Made in U.S.A. PAT'D 6-10-29 Other PAT'S PENDING CAP. 00035 MFDwireless, radio, scientific instruments, coil and tuner, condenser

Advertising posters for unbreakable condenser bobbins, produced by Hearl Heaton and Sons Ltd.The New Patent / UNBREAKABLE / CONDENSER / BOBBIN / The Result of 100 Years' Experience. / Perfectly Simple! / Simply Perfect! / Over / Half-a-Million / in use. / Because it is the BEST / it costs a few pence / more than some others - / BUT it saves SHILLhearl heaton and sons ltd

Ink on tracing paper technical drawings of John Barker's heat Pump project: .1) Magnetic clutch drive pulley .2) Condenser .3) amendment to condenser technical drawing, heat pump project, john barker

In the early 1970s the rope tows at Falls Creek were replaced by T Bars, after which they were replaced by chairlifts. When the snow thawed, the mountains reverberated from the sounds of blasting as new pylons were constructed for these chairlifts.Blasting equipment from the early 1970s in three parts, including a rectangle metal box with black with white text on top and six connectors, a rectangle yellow 'Blostometer 80' and a rectangle box with red knobs at end and enclosed in a black-brown leather case. 'EXPLODER TESTING RHEOSTAT' 'Blastometer 80' 'Nissan Blasting Machine - ICI - 30 shot condenser'falls creek, construction, blasting, explosives, snow, snow fields

Induction coil, note ivory handles to spark adjusters. (said to have a tinfoil condenser)

Gas Company – Stawell Ammonia Scrubber. Purifier. Condenser. Washer. Tower Scrubber with Retort house and Coke plant in the background.stawell

Coloured slide transparency. Image is of a bush area. There is some machinery set into the ground in the foreground and some water from either a river or dam can be seen to the right. The words, Ruedin's Euc Oil Condenser are handwritten across the bottom border.Kodachrome Transparencyslide, bendigo, bendigo institute of technology

Vertical cylinder reciprocating condenser air pump with two 107 cm diameter flywheels (one on each end of crankshaft). The operating cylinder at at top of the machine has a centrifugal governor. Access ladder to platform at front. Painted black and red. On cylinder head "63"machinery pumps reciprocating metalwork

It's assumed that this journal was read at the Ballarat School of MinesA small illustrated journal with advertisements and pictures. pages 328-356 (and 26 pages of illustrated advertisements). Illustrations include machinery, corn crushers, condensers, chlorination plants. stea, hammers, steam engines, steam pumps, lamps, saw bench, leather belting, casks, barrels, machinery, boiler, cohran and co, birkenhead, stern, cowles syndicate company, electric smelting works, aluminium manufacturing, w t glover and co, rope machine, steam travelling crane, webster wood fibre machine, automatic govenor expansion gear, international exhibition edinburgh, beacon light, air propeller, well boring tools and pumps, cochran and co.'s launch, tug and boat building yard, s.s. jeanette, cochran boiler, cochran and co's boiler shop, stern wheel steamer, s.s. esperanca, cowles syndicate co, milton, w.t. glover & co.'s patent compound rope making machine, bendh drilling machine, steam launch, bicycle, well-boring tools

Wireless patrol car which is a Lancia Trikappa Tourer. The 7-stage amplifier with the tuning condenser can be seen through the open door of the car. Police dog on the running board. Photograph appeared in Popular Radio Weekly, March 4, 1923. The transmitter aerial was strung between the front and rear mudguards and lenghened by the driver raising the pole in order to improve reception. The receiver aerial is tied to the underneath of the roof.police vehicles; lancia trikappa tourer; motor police branch; wireless patrol; transport

The Davey Paxman Experimental Steam Engine was purchased as the result of a bequest from Thomas Bath. The 'substantial sum' was used to build an Engineering Laboratory. The Ballarat School of Mines Council minutes of 08 November 1901 record: - Plans for [the] proposed building were submitted ... and ... it was resolved that a temporary building for an Engineering Laboratory be put up.' This laboratory, as an existing building, is first mentioned in the Ballarat School of Mines President's Annual Report of 1901, presented on 28 February 1902, reporting 'the erection of a building 67ft long by 33 ft wide' This report also lists all the equipment that would be accommodated in the Engineering Laboratory, including the experimental steam engine and boiler. The experimental Davey-Paxman steam engine arrived in Ballarat towards the end of 1902. The Engineering Laboratory was opened on 14 August 1903 by His Excellency Sir Sydenham Clarke. This engineering laboratory remained in use till about 1945. By 1944 preparations were under way at the Ballarat School of Mines to expand existing facilities, to be ready for the influx of returned soldiers. A new Heat Engines laboratory was built, this time of brick construction, replacing the previous corrugated-iron shed. In the early stages the steam engine was used to drive an overhead transmission shaft for machinery in the adjacent workshop. Later the steam engine was moved to a space that became the Heat Thermodynamics Laboratory. At the end of 1969 the engine was relocated to the Thermodynamics Laboratory at the then Ballarat Institute of Advanced Education (BIAE) Mt Helen Campus. It was donated to Sovereign Hill in 2006. According to the research of Rohan Lamb in 2001 around five experimental steam engines were made by Davey Paxman, and three of these had similar configuration to the Ballarat School of Mines Steam Engine, however, each of these was also unique with different valve arrangements. The list, which was on a scrap of paper in a folio held in the Essex Archives, confirmed that one was sent to India. The Ballarat steam engine can be dated to late 1901 to early 1902. Zig Plavina was responsible for moving the steam engine to Mount Helen, and worked on it as a technician for many years. He observed the following: * The condenser is driven by the low pressure engine. * The following arrangements are possible: i) the high pressure engine alone, exhausting to atmosphere. Condenser not used, crankshaft flanges not coupled. ii) crankshafts coupled, mains pressure (120 psi) steam supplied to high pressure engine, partially expanded steam delivered to low pressure engine (Tandem operation). Choice available re exhaust steam: either to the condenser or to atmosphere. iii) crankshafts not coupled, reduced pressure steam supplied to low pressure engine. Exhaust steam - either to the condenser or to atmosphere. * Valve arrangement - a choice of Pickering cut-off or throttle governor. On low pressure engine - throttle governor only.Black and white photograph of the Davey Paxman Experimental Steam Engine. On the brake is returned serviceman Norman WIlliam Ludbrook (Diploma Electrical Engineering, 1952). Far right is Roy E. Mawby (Diploma Electrical Engineering, 1950)steam engine, model steam engine, davey paxman, electrical engineering, laboratory, scientific instrument, norman ludbrook, norman william ludbrook, roay mawby, roy e. mawby

The Davey Paxman Experimental Steam Engine was purchased as the result of a bequest from Thomas Bath. The 'substantial sum' was used to build an Engineering Laboratory. The Ballarat School of Mines Council minutes of 08 November 1901 record: - Plans for [the] proposed building were submitted ... and ... it was resolved that a temporary building for an Engineering Laboratory be put up.' This laboratory, as an existing building, is first mentioned in the Ballarat School of Mines President's Annual Report of 1901, presented on 28 February 1902, reporting 'the erection of a building 67ft long by 33 ft wide' This report also lists all the equipment that would be accommodated in the Engineering Laboratory, including the experimental steam engine and boiler. The experimental Davey-Paxman steam engine arrived in Ballarat towards the end of 1902. The Engineering Laboratory was opened on 14 August 1903 by His Excellency Sir Sydenham Clarke. This engineering laboratory remained in use till about 1945. By 1944 preparations were under way at the Ballarat School of Mines to expand existing facilities, to be ready for the influx of returned soldiers. A new Heat Engines laboratory was built, this time of brick construction, replacing the previous corrugated-iron shed. In the early stages the steam engine was used to drive an overhead transmission shaft for machinery in the adjacent workshop. Later the steam engine was moved to a space that became the Heat Thermodynamics Laboratory. At the end of 1969 the engine was relocated to the Thermodynamics Laboratory at the then Ballarat Institute of Advanced Education (BIAE) Mt Helen Campus. It was donated to Sovereign Hill in 2006. According to the research of Rohan Lamb in 2001 around five experimental steam engines were made by Davey Paxman, and three of these had similar configuration to the Ballarat School of Mines Steam Engine, however, each of these was also unique with different valve arrangements. The list, which was on a scrap of paper in a folio held in the Essex Archives, confirmed that one was sent to India. The Ballarat steam engine can be dated to late 1901 to early 1902. Zig Plavina was responsible for moving the steam engine to Mount Helen, and worked on it as a technician for many years. He observed the following: * The condenser is driven by the low pressure engine. * The following arrangements are possible: i) the high pressure engine alone, exhausting to atmosphere. Condenser not used, crankshaft flanges not coupled. ii) crankshafts coupled, mains pressure (120 psi) steam supplied to high pressure engine, partially expanded steam delivered to low pressure engine (Tandem operation). Choice available re exhaust steam: either to the condenser or to atmosphere. iii) crankshafts not coupled, reduced pressure steam supplied to low pressure engine. Exhaust steam - either to the condenser or to atmosphere. * Valve arrangement - a choice of Pickering cut-off or throttle governor. On low pressure engine - throttle governor only.Black and white photograph of the Davey Paxman Experimental Steam Engine installed at the Ballarat School of MInes. steam engine, model steam engine, davey paxman, thomas bath, experimental steam engine

The Davey Paxman Experimental Steam Engine was purchased as the result of a bequest from Thomas Bath. The 'substantial sum' was used to build an Engineering Laboratory. The Ballarat School of Mines Council minutes of 08 November 1901 record: - Plans for [the] proposed building were submitted ... and ... it was resolved that a temporary building for an Engineering Laboratory be put up.' This laboratory, as an existing building, is first mentioned in the Ballarat School of Mines President's Annual Report of 1901, presented on 28 February 1902, reporting 'the erection of a building 67ft long by 33 ft wide' This report also lists all the equipment that would be accommodated in the Engineering Laboratory, including the experimental steam engine and boiler. The experimental Davey-Paxman steam engine arrived in Ballarat towards the end of 1902. The Engineering Laboratory was opened on 14 August 1903 by His Excellency Sir Sydenham Clarke. This engineering laboratory remained in use till about 1945. By 1944 preparations were under way at the Ballarat School of Mines to expand existing facilities, to be ready for the influx of returned soldiers. A new Heat Engines laboratory was built, this time of brick construction, replacing the previous corrugated-iron shed. In the early stages the steam engine was used to drive an overhead transmission shaft for machinery in the adjacent workshop. Later the steam engine was moved to a space that became the Heat Thermodynamics Laboratory. At the end of 1969 the engine was relocated to the Thermodynamics Laboratory at the then Ballarat Institute of Advanced Education (BIAE) Mt Helen Campus. It was donated to Sovereign Hill in 2006. According to the research of Rohan Lamb in 2001 around five experimental steam engines were made by Davey Paxman, and three of these had similar configuration to the Ballarat School of Mines Steam Engine, however, each of these was also unique with different valve arrangements. The list, which was on a scrap of paper in a folio held in the Essex Archives, confirmed that one was sent to India. The Ballarat steam engine can be dated to late 1901 to early 1902. Zig Plavina was responsible for moving the steam engine to Mount Helen, and worked on it as a technician for many years. He observed the following: * The condenser is driven by the low pressure engine. * The following arrangements are possible: i) the high pressure engine alone, exhausting to atmosphere. Condenser not used, crankshaft flanges not coupled. ii) crankshafts coupled, mains pressure (120 psi) steam supplied to high pressure engine, partially expanded steam delivered to low pressure engine (Tandem operation). Choice available re exhaust steam: either to the condenser or to atmosphere. iii) crankshafts not coupled, reduced pressure steam supplied to low pressure engine. Exhaust steam - either to the condenser or to atmosphere. * Valve arrangement - a choice of Pickering cut-off or throttle governor. On low pressure engine - throttle governor only. Black and white photograph of an experimental steam engine which was produced for the Ballarat School of Mines. It was designed for experimental purposes, such as testing of efficiency, etc. The laboratory which housed the steam engine was lit with gas lighting. davey paxman experimental steam engine, model steam engine, davey paxman, steam, thomas bath, thermodynamics

Set of six photocopied plans or drawings on A3 sheet of Clifton Hill car shed - 3/1937 Some of the sheets overlap with each other. .1 - P? - Plan showing depot block, building plan and track plans .2 - P7689 - Plan of Land - dated 6-3-1937 .3 - P7690 - same as sheet one, but shows date and drawing number .4 - P? - part of shed with notes hand written on it - changes made to buildings - notes condensers and gas storage - possibly for the gas producer buses. .5 - part of plan with hand written notes .6 - dittotrams, tramways, drawings, depots, property, clifton hill cable tram depot, cable trams, world war 2, buses

Five 'Popular Radio Weekly Magazines. .1) Vol. 1, No. 1, 25 February 1925. (Purchasing a receiver, eliminating static, Morse Code, An Efficient one-valver, A Simple Crystal Circuit, Combining Valve and Crystle, the Alfred Hospital, Frank Tate on Radio. Images of Josie Melville, Alberto Zelmanm circuits) .2) Vo. 1, No. 14, 27 May 1925. (Purity amplifier, Popular Wireless, Oscillations, Marconi's Wireless Beam Transmitter, Resistance coupled Amplifiers, Condenser Losses) .3) Vol. 1, No. 2, 04 March 1925. (A Crystal Receiver, Medium Wave Four-Valver, The Harkness Circuit, A One-Valve Super, The Aerial Mast, The Police Patrol, C Batteries, A Two Crysal set, La Bela Lingvo, Plain Aerial. Images - Transmitting Aeroplace, A. Nicholson - Chief Commissioner of Police) .4) Vol. 1, No 15, 03 June 1925. (The Ham and Radiophone, A Good Circuit, How the Microphone Transmitter Works, A Reflex Circuit, A Millionaire's Radio Installation, Teh Deresnadyne, Crystal Detectors, Hints an Accumulators, 3LO, Selection Radio Parts) .5) Vol 1, No. 6, 01 April 1925. (The Renartz Tuner, A 600 foot aerial, Measuring your Receiver, Doctoring Your Set, Understanding What You Read, The Vernier Condenser, Radio and Railways, Who Can Build the Smallest Set.)radio, valve, electrical engineering, frank tate, alberto zelman

The Davey Paxman Experimental Steam Engine was purchased by the Ballarat School of Mines as the result of a bequest from Thomas Bath.The Davey Paxman Experimental Steam Engine was purchased as the result of a bequest from Thomas Bath. The 'substantial sum' was used to build an Engineering Laboratory. The Ballarat School of Mines Council minutes of 08 November 1901 record: - Plans for [the] proposed building were submitted ... and ... it was resolved that a temporary building for an Engineering Laboratory be put up.' This laboratory, as an existing building, is first mentioned in the Ballarat School of Mines President's Annual Report of 1901, presented on 28 February 1902, reporting 'the erection of a building 67ft long by 33 ft wide' This report also lists all the equipment that would be accommodated in the Engineering Laboratory, including the experimental steam engine and boiler. The experimental Davey-Paxman steam engine arrived in Ballarat towards the end of 1902. The Engineering Laboratory was opened on 14 August 1903 by His Excellency Sir Sydenham Clarke. This engineering laboratory remained in use till about 1945. By 1944 preparations were under way at the Ballarat School of Mines to expand existing facilities, to be ready for the influx of returned soldiers. A new Heat Engines laboratory was built, this time of brick construction, replacing the previous corrugated-iron shed. In the early stages the steam engine was used to drive an overhead transmission shaft for machinery in the adjacent workshop. Later the steam engine was moved to a space that became the Heat Thermodynamics Laboratory. At the end of 1969 the engine was relocated to the Thermodynamics Laboratory at the then Ballarat Institute of Advanced Education (BIAE) Mt Helen Campus. It was donated to Sovereign Hill in 2006. According to the research of Rohan Lamb in 2001 around five experimental steam engines were made by Davey Paxman, and three of these had similar configuration to the Ballarat School of Mines Steam Engine, however, each of these was also unique with different valve arrangements. The list, which was on a scrap of paper in a folio held in the Essex Archives, confirmed that one was sent to India. The Ballarat steam engine can be dated to late 1901 to early 1902. Zig Plavina was responsible for moving the steam engine to Mount Helen, and worked on it as a technician for many years. He observed the following: * The condenser is driven by the low pressure engine. * The following arrangements are possible: i) the high pressure engine alone, exhausting to atmosphere. Condenser not used, crankshaft flanges not coupled. ii) crankshafts coupled, mains pressure (120 psi) steam supplied to high pressure engine, partially expanded steam delivered to low pressure engine (Tandem operation). Choice available re exhaust steam: either to the condenser or to atmosphere. iii) crankshafts not coupled, reduced pressure steam supplied to low pressure engine. Exhaust steam - either to the condenser or to atmosphere. * Valve arrangement - a choice of Pickering cut-off or throttle governor. On low pressure engine - throttle governor only.davey paxman experimental steam engine, model steam engine, steam, thermodynamics laboratory, thomas bath, bequest

Microscope were essential medical tools in diagnosing blood and tissue samples of patients. Microscopes were used at Ararat Mental Hospital from the time of its opening. The microscope is significant as an example of medical equipment used at the mental institution in the 1800's.This microscope sits in an flat tripod, much like the American style foot. It has an inclination joint. The mirror is on a double jointed arm, allowing oblique illumination and above stage illumination of opaque objects. The substage ring fitting can be removed to allow for extremely oblique lighting. Removing the ring is easy as it is fixed by a simple bayonet arrangement. Many microscopes had a bullseye condenser which attached to the stage, but this is lacking in this example, perhaps because the mirror can articulate above the stage. Coarse focus is by straight rack and pinion, fine by micrometer screw acting on the stem. There is an extendable drawtube which extends to allow optimal use of the objectives and a single objective and ocular are present. The microscope is missing pieces such as glass slides and two side braces.R & J Beck London Serial Number: 7925microscope, pathology, medical equipment, biospsy

Six key portable cassette recorder/player with rotary volume control. It can be operated directly from batteries or AC power (cord included). Also has Automatic Recording Level Control Circuitry (ALC), thus no need to adjust volume while recording. In original box with instructions and power cord. (Purchased at Waltons for 29.99).Auto Stop / GAC - logo Top: Condenser mic Rec / Play / Rewind / FF / Eject Left side: Ear O / Remote Mike 00 / Volume Bottom markings: Model No. SW-201 AC: 240V 50HZ 6W DC: 6V (UM - 2x4) Made in Hong Kong Warning: To prevent fire or electrical shock hazard, do not expose this appliance to rain or moisture, do not remove cover, no user serviceable parts inside, refer servicing to qualified service personnel. cassette recorder, gac

Brown soft covered book. Contents include: Winning Brown Coal at Yallourn Dredge Operation for Overburden Removal Boiler Plant at the Yallourn Power Station Electrical Equipment at the Yallourn Power Station Steam Plant at the Yallourn Power Station Yallourn-Melbourne High Tension Line Yarraville Terminal Station Transmission distribution High Transmission Towers for River Crossing Sugarloaf-Rubicon Hydroelectric Development Briquette factory Subsidiary Activities at Yallourn Future Developments thompson's engineering & pipe co. ltd, briquettes, electricity, power generation, yallourn, yallourn briguetting works, transmission lines, high tension switchgear, insulators, australian porcelain company, substation, brown coal, high tension line, sugarloaf-rubicon, plans, suspension tower, transposition tower, yarraville terminal station, condenser, newport power station, gippsland, hydroelectric

These are sales photographs for William Tatham Ltd. of Rochdale. These photographs are taken in the fitting shop at William Tatham Ltd. where final assembly would have taken place. A carding machine disentangles and cleans wool fibres and then aligns the individual fibres so that they are parallel with each other.The photographed machine was made by William Tatham Ltd, a textile engineering company based in Rochdale, UK. Established in 1866 Tatham developed innovative textile machinery and send their products to Australia and other countries around the world.Two black and white photos of an Semi-Continental Card Set in a landscape format. The first photo is of the whole machine, the second is a close up of the mid section of the machine.8038.1 - Front - top margin: For description see over. Front mid right edge - Wm. TATHAM Ltd. ROCHDALE. Machine Maker Front bottom right corner - 1131 Rear - Semi-Continental Card Set arranged to receive latest pattern Automatic Feed fitted with Peralta, improved type Parallel Fiber Feed permitting of passageway between Scribbler and Carder. Four-tier Continuous Tape Condenser. 8038.2 - Front - top margin: For description see over. Front mid right edge - Wm. TATHAM Ltd. ROCHDALE. Machine Maker Front bottom right corner - 1132 Rear - Showing Peralta with hydraulic pressure to rollers and working with improved pattern Parallel Fibre Feed arranged with passage between the two main sections.textile machinery, tatham, carding machine, wool manufacture

This model was found in the collection of Bay Steamers Maritime Museum. It is not knowt who created it but it is supposed that it was constructed to educate the many masters of the Wattle in the operation of a steam engine - a not so common mode of power these days. A Bay Steamers Maritime Museum examined the model in March 2012 and discovered that is was in poor repair. Using his existing knowledge, and with reference to some historic texts, he made some repairs and returned the model to working order. Here is his anaylsis of the situation as an excerpt from the Bay Steamers Maritime Museum newsletter Steamlines May 2012 "I was confronted with a model of a steam engine used years ago as a training aid for hopeful steam engineers. Already having a knowledge of steam operations, I considered a museum write-up for that model a ‘piece of cake’. However, on turning the model’s crankshaft, the valve timing seemed ‘out of kilter’ with the movement of the piston. Problem was that the two eccentrics on the crankshaft were not properly secured to it. Eventually I fastened the two eccentrics to the crankshaft where I felt that they should be and then realized that one of them had a chain-driven valve-timing device attached. This would be adjusted while an engine was running to achieve best performance and fuel economy whilst in operation by accurately controlling the period of time during which steam under pressure from the boiler would be admitted to the cylinder and give greater time for the steam to expand in the cylinder, move the piston and turn the crankshaft and thus, drive the attached apparatus. When the valves were correctly set up it was then possible to get the model to function properly.The model comprises a green section, which is the actual the model mounted on a brown painted board. There are two parts of the model, painted white representing the steam passages, and black representing the cast- iron portions of the cylinder-block casting, and of the main valve sliding between the cylinder a second sliding valve. Of the black portions, one slides back and forth being connected to a rod which is connected to an eccentric clamped to the crankshaft and is the nearer to the flywheel of two eccentrics. This eccentric is attached to the crankshaft at an angle of 90 degrees to the crank-pin attached to the flywheel. To operate the model simply turn the flywheel by means of the handle attached to its crank-pin. A second eccentric is also attached to the crankshaft, further away from the first eccentric, and it is adjusted to operate 90 degrees from the first eccentric (that is, 180 degrees from the crank-pin) A piston (painted silver) is located in a plastic cylinder and has a piston rod which passes through one end of the cylinder, (in actual practice a steam-proof gland seals the cylinder against loss of steam) terminating in a cross-head slide between four rails guiding it. From this cross-head, a connecting rod joins the piston-rod to the flywheel via the crank-pin attached to the flywheel which is part of the crankshaft. (In actual practice, a flywheel may not be used, particularly in a multi-cylinder engine.) The white portions of the model painted nearest to the cylinder represent the two steam ports cast into the main cylinder block, whilst one section painted in between those two represents the exhaust outlet (which may be connected to a condenser to conserve water, or to the open air). The main slide valve has three white-painted portions painted thereon. It has two white-painted marks representing the steam passages to the steam ports into the cylinder, and a third section in between the other two, being that part of the valve through which exhaust steam passes in line with the ports in the cylinder block. By rotating the flywheel, the operations of an engine will be observed as steam is admitted to the main valve via the gap between the two jaws of two moveable portions of a second sliding valve which is operated by the second eccentric attached to the crank-shaft. This eccentric is used to finely tune the valve timing of this model to obtain best running results of an engine. There are various methods used for reversing a steam engine. model compound steam engine, steam engine, model, crankshaft, valve, flywheel, wattle, engineer, eccentrics

.1 - Book - 28 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Contactor Starters for Electric Motors" C49-1927, December 1927. .2 - Book - 56 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Dimensions of insulated annealed copper conductors for electric power and light including voltage tests" C50-1928, June 1928. .3 - Book - 36 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Vulcanised Fibre for Electrical Purposes" C51-1928, May 1928. .4 - Book - 16 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Bus-bars and connections constructed of bare copper or aluminium" C52-1928, May 1928. .5 - Book - 16 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Fixed Condensers for Radio Reception Purposes" - C53-1928, February 1928. .6 - Book - 32 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard "Graphic (Recording or chart recording) ammeters, voltmeters and wattmeters." C54-1928 March 1928. .7 - Book - 20 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "5-Amp two pin wall plugs and sockets for domestic purposes (without earthing connection)" C55-1928, August 1928, .8 - Book - 24 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard "Electric Cable Soldering Sockets" C56-1929, March 1929. .9 - Book - 8 pages + brown covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Australian Standard "Graphical Symbols and Schedule of Outlets for the Electrical Equipment of Buildings" C64 and 65-1935, October 1935. .10 - Book - 24 pages + brown covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Australian Standard "Porcelain Insulators for overhead powerlines and outdoor switching Structures" C67-1939, August 1939. On top right hand corner has the date stamp of the "The Electric Supply Co. of Victoria Ltd Ballarat" for items .1 to .8, SEC stamp on .10. trams, tramways, power station, standards, materials, electrical systems

Manufactured in the 1960s, this mobile emergency telephone exchange was fitted into a caravan. Part of the Shepparton Division State Disaster Plan, the caravan could be towed to areas affected by disasters to enable communications to recommence. The caravan remained in service until approximately 1974.Mobile infrastructure plays an important role in Australian communications, owing to the often remote and hostile environments in which Australians live and work. Exchanges such as this facilitated phone calls in the aftermath of an emergency, particularly for hospitals, police and other emergency services. Today, Mobile Exchange on Wheels (MEOWs), Cell on Wheels (CoW) and Satellite Cell on Wheels (SatCOW) - which provide temporary landline and broadband services, mobile phone coverage and service in areas without communications infrastructure respectively - are a critical part of emergency response procedures for natural disasters such as fire and flood. Though technology has progressed, the need for rapid service in remote areas remains a present concern of the communications service providers in Australia. This mobile service infrastructure is historically significant as an early example of a service which has evolved over decades, yet is still needed today. The exchange, as a representative example of a vehicle which would provide early-response in a disaster, is socially significant as a facilitator of critical communications needs in devastated communities: access to emergency services and contact with family and friends. The exchange itself, intact from its period of use, provides an insight into technology of the 1970s.Mobile emergency exchange housed in a caravan trailer on 2 wheel base, duralin body, steel tow bar, Caravan divided into 3 sections; the exchange room; the relay room and the main frame room. The exchange room contains 3 switchboards, a folding table, cupboards, benches and switch rack (.1). table (.2), steel bar for attaching the table (.3), back boards of switchboards (.4-.6), switches (.7-.16), box of switches (.17). There is a wall phone magneto, 300 type handset on wall and 2 skylights with wire screens. .11? hat pegs and shelf; there are 2 fluorescent tubes for lighting, all in exchange section. The floor is covered with 2 tone grey tiles and there are wire mesh on outside of windows and a geometric curtain inside behind switch rack. There is a flywire screen door as well as exterior door. The relay room has a sectioned door so half can open at a time. Room contains a cupboard with folding bench top beneath a curtained window. The opposite wall has a bank of batteries and transmission condensers; there is a shelf above window, one fluorescent tube and fuse boxes. Tiles on floor also. The main frame room contains many metres of coiled black covered cable, a black covered magneto wall telephone with 300 type handset; grey plastic jumper cords, a rack of termination points and wire with wasp nests attached. There is a small iron step under door, a fluorescent tube on wall and 3 hat hooks. Roll of Paper Handtowels (.18), cord and handle (.19), red exchange cords and plugs (.20-.22), plastic aluminium runners (.23,.24), headset (.25,.26), logbook (.27), battery readings (.28), box containing papers circuit drawings etc (.29-.93), paper lists off wall (.94,.95). Books, record books etc (.96-.103). Manila folder (.104) containing circuit drawings (105-.124). Wooden drawer (.125), metal drawer containing subscribers master cards, record of faults cards, particular switchboards connected, Junction line cards (.126). Box of valves (.127), box of clamps (.128). Box of 2000 type rack fuses, red 1 1/2 AMPS, black 3 AMP, blue 1/2 AMP (.129). Box of sleeves for covering wire joints (.130), plastic beakers (.131,.132), soap (.133), box of white plastic squares (.134), time switch "Venner BF/43 time switch" Made in England (.135), box of bolts, knobs etc (.136), box of switchboard number indicators (.137), fuse (.138), fuse wire (.139), football card (.140). Box of cartridge fuse 6 AMP (.141). Envelope of drawing pins, rubber bands (.142), black plastic, paper tape centres (.143-.152), metal plug (.153), 2 signs "Beware of vehicles" (.154-.155). Paper listing Naringal East automatic conversion (.156). Green Commonwealth of Australia note pad (.157). Wiring plug for tail lights (.158). Black fuse plugs (.159,.160). Box of bolts (.161). 2 sections of blue plastic coated wires (.162,.163). Gloves used for working on batteries (.164-.167). Wasp nests (.168,.169). White fuse (.170). Photographs of van in use (.171,.172)..1 on front: "ANOTHER / MOBILETRAIL / PRODUCT" "MAX SPEED / 25MPH" "TRAILER BRAKES / --- / " On sides: "EMERGENCY TELEPHONE EXCHANGE" "NO 1" "PMG" "TCQ / GROSS 250 / TARE 182 / LOAD 162" "6" "COUNTRY BRANCH / NORTH REGION / [SHEPPARTON DIVISION]" "LAW'S SIGNS" "Telecom Australia" On back: "DANGER / LONG LOAD" "MQA 3787" .133: "FIR OIL" "AUSTRALIA"mobile telephone exchanges, mobile telecommunications trailers, trailers, transport, natural disaster, black saturday, bushfires, floods, emergency communications