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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 from AC-Sphinx Sparking Plug Co. regarding issues with sample plugs and sending non-detachable replacements.

Identifier  ExFiles\Box 163\5\  img018
Date  18th April 1936
  
TELEGRAMS: SPHINX, DUNSTABLE
TELEPHONE: DUNSTABLE 360 PRIVATE BRANCH EXCHANGE.
86000.
THE AC-SPHINX SPARKING PLUG Co. LTD.
DIRECTORS: N. F.{Mr Friese} STOCKBRIDGE, W. O.{Mr Oldham} KENNINGTON. C. J.{Mr Johnson W.M.} BARTLETT.
DUNSTABLE
BEDFORDSHIRE
OUR REF. NFS/GEB.
YOUR REF.
18th April, 1936.
Messrs. Rolls-Royce Limited,
Derby.
For the Attention of Mr. H.{Arthur M. Hanbury - Head Complaints} E.{Mr Elliott - Chief Engineer} West.
Dear Mr. West,
Further to my letter dated the 9th instant, sending you some sample detachable type plugs with sinterkorund insulators, and to my further letter of the 14th, warning you of the troubles we have encountered in our own tests on these detachable type plugs in the matter of "blowing", I want to tell you that I am so disturbed that this blowing difficulty may upset the performance of these plugs, that we have decided to make up for you immediately some further sample plugs with the same heat characteristics, but of the non detachable type, which should entirely eliminate the risk of blowing.
We hope to have these plugs available in about ten days' time, i.e., about April 29th, and as soon as they are ready I will ensure that they are mailed to you immediately.
Yours faithfully,
N.F. STOCKBRIDGE,
Managing Director.
MAKERS OF AC SPARKING PLUGS - AC AIR CLEANERS - AC PETROL PUMPS - AC PETROL GAUGES - AC OIL FILTERS - AC OIL GAUGES
  
  


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