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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 Dunlop Rubber Co. Ltd. regarding a revised sample of a new type of jack for Bentley Chasses.

Identifier  ExFiles\Box 139\2\  scan0278
Date  6th June 1935
  
X1166
DUNLOP RUBBER CO.,LTD.

TELEGRAPHIC ADDRESS:
"DUNLOPS, PHONE, BIRMINGHAM"
TELEPHONE:
ERDINGTON 2121 (P.B.X)
EXTENSION No.

YOUR REF:
OUR REF: FRC/DW 3.

FORT DUNLOP
ERDINGTON
BIRMINGHAM

Messrs.Rolls-Royce Ltd.,
DERBY.

6th
June
1935.

File

For the attention of Mr.Bowering.

Dear Sirs,

New type Jack for Bentley Chasses.

Handwritten notes in left margin:
Swivel
Jacking pad } Nickel Plated
Screw f stop
Checkered Base.
Enamel finish
Nickel socket
Polished Ram.
Socket & Toe
more unrestrained

We have pleasure in sending you under separate cover a revised sample Jack.

The gear wheels have been made from new patterns and we trust you will agree that the smooth running is at least equal to the American sample. It has been necessary to cast them in Millenite to save time but it is our intention to use Malleable iron on production. } Malleable iron

The screws have been case hardened and temper-ed{J. L. Edwards}, and we trust this will overcome previous troubles. The Jack has also been fitted with a rotatable top. } Brinell 400

The Jack body is the same height as previously as we have not had time to get/a new body casing. The screws, however, have been shortened so that the extended height of the sample is to the proposed altered dimensions.

With regard to the handle socket, we are sending two handles and two pinions.

(a) Bayonet type with the clearance reduced to the minimum amount permissible for casting limits.

(b) Spring type, which has the advantage of prevent-ing the handle being inadvertently withdrawn. } to be incorporated

(The pinions are interchangeable on the Jack by means of the small grub screw.)

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