Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Letter to Armstrong's Patents Co. Ltd. regarding a bellows control arrangement.

Identifier  ExFiles\Box 152\2\  scan0094
Date  2nd December 1937
  
1293

December 2nd.1937

Rm {William Robotham - Chief Engineer} /Les.6/AP.

Armstrong's Patents Co.Ltd.,
Eastgate,
Beverley,
YORKS

For the attention of Mr.Bogg

Dear Sir,

Thank you for your letter of the 29th. enclosing a sketch of the bellows control arrangement.

The maximum pressure that we use in our control system is 35 lbs/sq.in. but provided the bellows will stand a greater pressure there is no difficulty in increasing our pressures.

From a rough glange at your scheme 646.Z. there appears to be the following faults:-

(1) There is no need for a gland on the bellows operation rod, in fact the bellows will not work unless the inside is vented to the damper reservoir. Any gland would cause too much friction.

(2) It will be necessary to balance out the upward load from the diameter of the valve spring plunger.

Yours faithfully,

FOR ROLLS-ROYCE LTD.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙