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 Leyland Motors discussing the process for chromium plating cylinder liners using a specific jig.
| Identifier | ExFiles\Box 140\3\ scan0195 | |
| Date | 13th July 1938 | |
| LEYLAND MOTORS, LIMITED. BY APPOINTMENT Head Office and Works, Manufacturers of Motor Vehicles. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS TELEGRAPHIC ADDRESS: LEYMOTORS, LEYLAND. TELEPHONE LEYLAND 81400 (16 LINES) Tel. Ext. 135. LEYLAND, LANCASHIRE YOURS IN REPLY PLEASE QUOTE OURS NT/AM. CUSTOMERS VEHICLES DRIVEN AT OWNERS RISK ONLY 13th July, 1938. Messrs. Rolls-Royce Limited, COVENTRY. Attention of Mr. Robotham. Dear Sirs, Chromium Plated Cylinder Liners. We enclose a drawing of the jig - No.17430 - which we propose to use for chromium plating our cylinder liners, using a rotating anode. This jig is split along its centre line and it is intended to clamp the cylinder liner, which is 10.15/16" long, approximately, in the centre of the jig. The spaces between the ends of the liners and the ends of the jig barrels are filled up by two sleeves each 2" long. The object of fitting these sleeves is to prevent the building up of the chromium at the ends of the cylinder barrels, the chromium will, however, probably build up to a considerable thickness around the outer edges of the sleeves. We have carefully examined the cylinder liner drawing No.E.87890, which you sent to us a few days ago, and we think that it would be possible to chromium plate some of these liners for you in our existing jig, if you will supply us with sleeves A.B.C. which we have indicated on our drawing. The cut-out at the bottom end of your liner may result in uneven deposition of the chromium and we would suggest that sleeve C should be provided with a projecting portion to fit the slot in the cylinder barrel, or alternatively, the liners may be slotted after chromium plating. We think the former method would - cont - | ||