Pre-Starting Lubrication For Bearings and Cylinders
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PAT E NT No. 873,411 shows a device for injecting lubricating oil into an engine before starting it. It is intended mainly for vehicles that normally stand idle for long periods. (J. Fisher, 8 Elm Road, Kingsway, Woking.) Referring to the sectioned drawing, while the engine is running, oil under pressure enters the port (1) and lifts a spring-loaded .non-return valve (2). The oil then flows upwards, lifting a springloaded piston (3) to the top of its cylinder. Thereafter, the cylinder remains full of oil under pressure.
When the engine is to be restarted after a period, a cable (4) is pulled to move a plunger (5) to the right. This lifts the non-return valve and allows the oil to discharge back into the lubrication system.
The left-hand end (6) of the plunger cylinder also functions as a pump for upper-cylinder lubricant and is fitted with suction and discharge valves to inject the lubricant into the inlet manifold of the engine when the cable is released. Electric contact strips (7) are connected to warning lights in the cab to indicate when the cylinder is full and when it is