Photos of Engine Hall:
- Steam Wagon: Messrs Alley and McLellan of Polmadie, Glasgow, renowned for their high quality marine steam engines, started to experiment with a steam wagon designed in 1904 and constructed their first 3 tonne model in 1906. By 1917 the demand for steam wagons was so high that Messrs Alley and McLellan were forced to establish a separate works at Shrewsbury with the name Sentinel Waggon works limited solely for wagon production. After this the Sentinel Company having undergone reorganizations, at one time or another were the longest lived company which delivered steam wagons up to 1950. This particular wagon was made in 1916 and purchased by Messrs Mazagon Dock Ltd. Bombay around 1917 to use it mainly as a winch to haul ships into the dry dock. It had been in running condition till 1971 when it participated in a Vintage car rally. Steam used to be generated at 230 psi by a vertical water tube coal fired boiler and then passed through a super heater in the uptake providing a superheat of 150 F. Total heating surface in the boiler was 36.5 sq feet and the grate area 2.6 sq. feet. Load carrying capacity of the wagon was 4 tonnes and maximum speed 12 mph. Donated by: Messrs Mazagon Dock Ltd. Bombay.
- Rectilinear and Curvilinear:
- Static pressure in liquids: This is a demonstration of the principle that the pressure in liquid depends on depth and is not affected by the amount of liquid or by the shape of the container. The model consists of two sections: a narrow one and a wide one. The sections are connected by three mercury manometers, all three of which are in equilibrium. This demonstrates that at the same level on both sides of each manometer the pressure is the same. On the other side of the wider section, the three manometers measure the actual pressure at three levels, demonstrating that the pressure increase with depth. These manometers are open on one side to the atmosphere.
- Interconnected vessels: If a number of vessels of different shapes are interconnected, it will be found that the liquid poured into them will remain at the same level in each. Hydrostatic pressure depends only on the depth below the liquid surface and not at all on the shapes of the containing vessels. Since the depth of the liquid is same in each vessel, the pressure at the base of each is the same and hence the system remains in equilibrium.
- Petrol Engine Automobile sectioned: Four stroke four cylinder overhead valve water cooled petrol engine.
Rated HP: 13.25
Manufactured by Hindustan Motors Limited, Calcutta.
Donated by Hindustan Motors Limited.