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).
Procedure and test results for creating asbestos rope glands for a 40/50 HP water pump.
| Identifier | ExFiles\Box 66a\3\ scan0138 | |
| Date | 29th January 1922 guessed | |
| 0288 X8150 ROLLS-ROYCE LIMITED DERBY not sent out ASBESTOS ROPE GLANDS 40/50 HP. WATER PUMP. MATERIAL. Asbestos rope 6-ply (approx .150" dia.) PROCEDURE. Grease a length of the rope (approx. 10") cut and twist one end to a point. Wind four complete coils round a shaft 9/16" dia., cut off at fourth complete coil, and taper the end. Grease another length of rope (approx. 9") and as before taper one end. Wind three complete coils over the bottom layer, commencing over the start of the lower coils (see sketch attached), cut to length and taper end. Compress tightly in formers, slightly release and with plenty of grease applied rotate formers to smooth ends over. SUMMARY OF RESULTS. Standard 'Lion' packings E.72046. Only one set of this type of gland completed the 4 hrs. run which was set as the maximum time during the eliminating tests. The longest time run by any other set was 45 mins. whether fitted as standard (E.70527 arrgt.) or spring loaded by a 20 lbs. spring. These packings are altogether too hard, and would need very high spring pressure to function effectively. contd :- | ||