ANEW PUMP FOR TYRE INFLATION.
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TEERE are very few light vans and lorries which are not now equipped with pneumatic tyres, so that the value of a speedy and reliable pump for maintaining air pressures at the required figure is really a great need of most users of this type of vehicle. Whether their vehicles run on high-pressure or low-pressure tyres we are sure that many users will be interested in the new patent mechanical pump now being marketed by Messrs. Williams and James,
of Gloucester. This pump has been designed to meet the demand which exists for a high-quality mechanical inflator at a reasonable price—one which is capable of dealing with the usual sizes of tyre fitted on light business vehicles. It is known as the Nev-a-Tire.
The outfit comprises a double-acting single-stage air compressor designed to run at L200 to 1,400 r.p.m., and embodies a patented system of lubrication which ensures an amply supply of oil
to all moving parts and absolutely clean, oil-free air. The drive is taken either, from the fan belt or flysileel on to a V-pulley or friction wheel fitted to the crankshaft of the compressor, and running on roller bearings.
To operate the belt-driven pump, a spring-loaded dog clutch is engaged with a corresponding clutch forming the hub of the V-pulley, whilst engagement of the friction-driven pump is provided for by an eccentric mounting.
The illustration which we publish indicates the compact nature of the complete equipment, and shows the existing fan spindle removed and replaced by the special spindle provided—the latter being made long enough to carry the fan on the outer end adjacent to the radiator. The tyre-pump bracket is attached to this stud, and swivels round it, forming an efficient belt-tensioning device. The fan belt has to be lengthened by about 12 ins., sufficient belting being supplied for the purpose, together with 12 ft. of rubber hose and valve connectors.