One cylinder, 4 cycled and double valve system gas engine, to show operations like intake, compression, explosion, exhaust, spark and others, mounted on wooden base with spark plug and battery.
4 stroke One cylinder, 4 cycled and double valve system gas engine, to show
operations like intake, compression, explosion, exhaust, spark and
The section cut model is constructed of light and strong metal showing air intake, axial flow, double stage compressor, fuel supply, combustion chamber, turbine rotar, jet thrust, exhaust etc.
Represents a typical air cooled, side-valve four-stroke petrol engine with the operation of the valves clearly evident, cams being driven by a gear train from rear of the main crank. As with the two-stroke model, simulated spark plug uses a small lamp to
indicate the firing point. Screw terminals are provided for connection
to 3 Volts battery. Cross-section of carburetter is shown. Mounted ...
The engine model comprises a section cut metal cylinder covered with transparent acrylic plate to observe the working parts -piston, valves, link motion and reversing methods.
GRAVESANDE - Ring and Ball with Chain. An apparatus for demonstrating thermal expansion, comprising a captive brass ball secured to a mounted brass ring by a chin, Ring mounted on rod with a wooden handle. The ball passes through the ring when cold but will not pass through after being heated.
Heavy cast iron base with 4 uprights, on one end of which is fitted a hand nut, the other drilled with holes to carry a cast iron rod bearing against narrow flats with 12 cast iron breaking rods to show force of contraction or expansion.
Consisting of a nickel plated copper vessel with outer vessel of teak wood fitted with bakelite top with hole for thermometer, terminals connected to a coil of wire complete with stirrer & outer teakwood vessel for determining the specific heat capacity of liquid by electrical method.
1 copper calorimeter, 1 wooden outer box with felt lining, 1 sliding wooden cover for outer box, 1 copper stirrer with loop to fit inside the copper calorimeter, 1 thermometer holder made of brass, removable.
A glass U tube, 15 mm dia, with one limb plain 220 mm long and other limb graduated 25 to 35 x 0.2 ml, 120 mm long terminating in a bulb 38 mm diameter, with third limb 185 x 6 mm (L x D) joined at right angles to the plane of the other two, short length of glass tubing mounted in end of wide bore plain limb with rubber bung, a piece of rubber tube and a pinch clip.
Consists of a polished teakwood stand approx. 750 mm high fitted with a wooden scale reading from 0 to 60 cm x 1 mm & supporting an adjustable mercury reservoir by a metal rod.
Comprising partly evacuated having two bulbs with two sets of vane, containing at its centre a fine pivot which supports four light weight metal arms. One side of each vane is blackened; the reverse side is bright, mounted on round base.
It comprises two cast iron uprights vertical pillars height approx 180 mm linked by rods, supporting an expansion bar, length 380 mm, fixed to one upright and resting on a friction pointer at the other with scale, supplied with one each aluminium; iron and brass expansion bars.
Comprising a brass cylinder, with an integral V pulley in the base of the cylinder & steel shaft which fits into a bearing block. A vertical pillar carries the cork lined friction arms & thermometer support, mounted on a wooden base.
For the determination of the upper fixed points of thermometers and boiling points at barometric pressures other than atmospheric. Double walled copper cylinder 34 x 6 cm height x outer dia mounted on steam boiler.