A series of models to demonstrate different gearing systems.
With transparent slideplates, the gears may easily be seen and where necessary there is an index on the primary and secondary shafts to show the change in the direction of rotation and the relative speed of rotation.
A simple three-speed and reverse-gear system using spur gears.
Reverse gear is obtained by interposing a small lay-shaft mounted pinion between the two main shafts.
Gear selection is by means of a short ball-ended lever.
A model of two-stroke diesel engine made in aluminium alloy and gun metal.
Ignition is shown by means of a miniature bulb. Fuel supply is also sectioned.
With hand crank, provided for manual operation.
Mounted on base.
To show the forces which can be exerted during thermal expansion or contraction.
Comprising a heavy cast iron frame 340x120x100mm with slotted end pillars to carry a stout iron bar.
The bar is threaded at one end for a large tensioning nut and has holes at the other end to accommodate the cast iron breaking bars.
Supplied complete with ten breaking bars.
The cut section is constructed model is of light and strong metal showing air intake, axial flow, double stage compressor, fuel supply, combustion chamber, turbine rotor, jet thrust, exhaust etc.
Complete on base.
Determination of charge on a electron by measuring a known distance on the basis of number of times of fall under gravity and of rise in uniform vertical electrostatic field in a series of charged oil drops.
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