From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Pipe sealing methods and a comparison of different automatic chassis lubrication systems.
Identifier | ExFiles\Box 27\1\ Scan042 | |
Date | 1st February 1929 guessed | |
- 8 - They depend on the addition of a steel cup for compressing the sleeve and the adjustment of the angles on the cup, sleeve and cap so as to prevent twisting the pipe in tightening. He has already demonstrated that they do actually make a perfect seal without twisting the pipe. Also they pull up "solid." The saving in first cost, cost of assembly, dirt in pipes, etc. promises to be very great. We have not yet tested a complete set. For junctions however the banjo is neater and simpler than his cast juntion-headers bolted to the frame, and they give a neater layout of pipes. Might we suggest that you should wait to see his latest line of K type drip plugs before standardising banjo plugs? Will be glad to send you samples on receipt of your requirements. Automatic System. (1) The hand-operated system is on its way out. Duesenberg already has an engine-driven pump on the Bijur system tripping every 50 miles. (2) We have suggested the addition to a standard Bijur tank with independent hand or foot operation, of a ratchet gear worked at each opening of the throttle to pull the pump plunger out and then release it say about every 50 miles in average driving. We have the notion that hand operation for wet weather, priming of system, etc. is desirable. But in this we are I think beaten at the start, because the American public wants only to drive the car and forget it. (3) Bijur is developing the scheme shown in D-1120, 1127. Vacuum from the top of the vacuum tank(therefore intermittent and proportional to the work done by the engine and car) operates a special diaphragm of the well known A.C. fuel pump impregnated cloth and so operates a short stroke plunger pump shown in D-1127, forcing small charges of oil into the "accumulator" D-1120. The piston in this accumulator, which is guarded from leakage by a Fulton thermostat bellows, is gradually forced down, accumulating a charge under pressure, until the toggling action shown flips open the discharge valve and delivers the charge of oil to the line. -continued- | ||