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 Howard Graham Ltd concerning the supply and specifications of shock damper and spring shackle bushes.
| Identifier | ExFiles\Box 154a\2\ scan0209 | |
| Date | 6th September 1939 | |
| 12932 HOWARD GRAHAM LTD DESIGNERS & MANUFACTURERS OF SPECIALISED AERONAUTICAL & AUTOMOBILE ACCESSORIES TELEPHONE - STRATFORD-ON-AVON 2958 (P.B.EX.) TELEGRAMS & CABLES:- HOWGRAHAM STRATFORD-ON-AVON CODES: MARCONI COMMERCIAL & BENTLEY'S SOLE LICENSEES BRITISH EMPIRE FOR HARRIS (PATENTED) BUSHINGS FOR AERO & INDUSTRIAL TRADES SHACKLE ASSEMBLIES ENGINE & SILENCER MOUNTINGS UNIVERSAL JOINTS, CENTRE BEARINGS ETC. TORFLEX COUPLINGS DIRECTORS: CECIL FRY (CHAIRMAN) GRAHAM CLAYTON-WRIGHT F.{Mr Friese} H.{Arthur M. Hanbury - Head Complaints} BULL HOWARD CLAYTON-WRIGHT (VICE CHAIRMAN & MANAGING DIRECTOR) HEAD OFFICE TIDDINGTON ROAD STRATFORD-ON-AVON YOUR REF Rm{William Robotham - Chief Engineer}/HFP.14/MH{M. Huckerby} OUR REF HS{Lord Ernest Hives - Chair}/LP{Mr Lappin}/8106 September 6th 1939 Messrs. Rolls-Royce Ltd., Derby. Dear Sirs, For the attention of Mr. H.F. Payne Further to our letter of the 15th August, and in reply to your letters of the 19th and 21st August, we enclose our drawing No. E/173, showing a suggested layout for the shock damper glands. The Harris Bushings employed in this application are standard size, but the Neoprene Seals will have to be specially manufactured to such dimensions that the Harris Bushes exert pressure against them when in position. The torsional resistance of one Bush No. CW.782 will be approximately 26.8 ft lbs on full deflection, i.e. 26.8 ft lbs when twisted from 0-16.5º With regard to the rear spring shackle Bushes, and in reply to your request in your letter of the 21st August, we should like to draw your attention to the third paragraph in our letter of the 15th August. As pointed out, we can supply you with a Bush similar to Bush No. CW917, but suitably reduced for 2" wide springs. We have examined your drawing No. SCD.1476, but it appears that you have not made any provision, for end-wise compression of the Bush in the spring eye, and we suggest that you modify your layout in a manner similar to the layout shown on our drawing A/178 which we enclose, this particular layout, however, applies to a different size of Bush. -contd- | ||