Rolls-Royce Archives
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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 discussing André Dubonnet's cars, suspension device, and patent status.

Identifier  ExFiles\Box 170\2\  img139
Date  16th January 1931 guessed
  
Dear Hs.{Lord Ernest Hives - Chair}

Re Dubonnet Car

Thank you very much for copies of notes on this matter.

We have spent some time with Dubonnet and on his cars, of which he had two - a not very successful sedan car, & a stripped chassis which was more interesting.

We think his device is neat and good in some ways. It lends itself to production.
Freed steering linkage and a suspension unit combining the functions of spring & shock absorber are ultimately inevitable, one believes.

We believe his device has detail faults which naturally I am not at liberty to detail to a "competitor" (particularly such a successful one as RR Ltd).

As usual in such cases, his patent situation is by no means clear, either to us or (apparently) to him.
  
  


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