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matching model compound steam engine
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Bay Steamers Maritime Museum
model steam engine
... model compound steam engine... to function properly. model compound steam engine steam engine model ...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 -
Seaworks Maritime Museum
Model ship, SS Iberia, 1873
SS Iberia (1873-1903) was built by John Elder & Co. (Govan yard no.162 Glasgow) and launched 6 December 1873 at a cost £151,600. However, due to strike delays, her maiden voyage was not until 21 October 1874. The Iberia was one of the last of the barque-rigged, clipper-bow type of steamer built for the Pacific Steam Navigation Company. At the time, she was also the second largest ship in world, after the Great Eastern. In 1877, a joint Orient Line and Pacific Steam Navigation Co. venture began a fortnightly mail service, first sailing between England and Australia on 12 May 1880, via Gibraltar, Naples, Port Said, Ismalia, Suez, Colombo, Albany, Adelaide, Melbourne, Sydney. Details: - Tonnage: 4,671 g, 2,982 n. - Dimensions: 433ft 6in (132.13m) x 45ft (13.72m) x 35ft 1in (10.69m). - Powered by a single screw, compound inverted 2 cylinder; 750 NHP; 4,000 IHP engine with steam pressure of 70 lbs, 4 cylindrical boilers, 2 to each funnel. - Speed 14 knots - 1873 Passengers: 100 1st, 150 2nd, 340 3rd Class. - 1893 Passengers: 140 first, 50 second, 800 third Some significant dates in her history include: - 1881: Replaced "Aconcagua" as standby vessel on the London - Suez- Melbourne - Sydney route - 1882: Government transport during the Egyptian Arabi Pasha Campaigns - 1883 Jan 25: Placed on regular service to Australia - 1890 Jun 11: Reverted to the Liverpool - Valparaiso route - 1893: Iberia sailed to Australia to replace a disabled ship. The journey via the Cape was non-stop at 14 knots in 32 days - 1893- Fitted with triple expansion engine; 3 cylinders, 600 NHP; 4 cylindrical boilers; 13 knots; fitted by J.Rollo & Sons, Liverpool - 1903: Broken up at Genoa. 1873 single screw, compound inverted, 2 cylinder; 750 NHP, 4000 IHP, Steam pressure 70 lbs, 4 cylindrical boilers, 2 to each funnel, 14 knots. Second largest ship in the world in 1874 (after the Great Eastern). Cost 151, 600 pounds. 1893 Triple expansion engine fitted. 3 cylinders 600 NHP, 4 cylindrical boilers, 15 knots, fitted by D Rollo and Sons, LiverpoolThe body of the model is carved and molded wood painted in black and white, the planked deck with detailed fittings and rigging, raised on a wooden base with simulated waves. At this time yards removed. "Iberia" -
Bendigo Historical Society Inc.
Document - MINING IN BENDIGO COLLECTION: WORKING MODELS OF HIGH-SPEED STEAM ENGINES
Set of six cardboard cards modelsof valve and piston motions of high speed steam engines. Produced by Thomas Jomes and T Gilbert Jones. Printed document titled: Working Models of High-speed Steam Engines, Series No. 3 by T. Jones, M. I. Mech. E. and T. Gilbert Jones, M. Sc., Wh. Sc., A. M. Inst. E. E. There is a reduced facsimile of Model No. 6. The 'Willans' Central-Valve Single-Acting Compound Engine, a description on using the models, a List of Models, Special Engineering Publications, Working Models and The 'X' Series of Cardboard Models. Also for full particulars sned to UK.education, tertiary, models for engineering students., working models of high-speed steam engines series no 3, westinghouse, belliss, erith, clayton, willans