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).
On the availability of Paxolin and Bakelite as substitute insulating materials for experimental units.
| Identifier | ExFiles\Box 39\3\ Scan143 | |
| Date | 19th August 1921 | |
| X. 3513 EFC. 19th Aug. 1921. AB.19. X.3428 X.3716. X.1109 - PAXOLIN FOR EXPL. LUNITS X.3513. X.3034. Two pieces of paxolin each 1/16" x 6" x 6" are now available for use in experimental electrical units, as substitutes for the present insulating materials. This is in a paper base only, no other being obtainable in England. Some small rods of the American material made with Japanese bond and canvas cap, however, be used for bushes etc. when they will compare with the paxolin. These are also in the Expl. Dept. As only 1/16" sheets have been received, it will be necess-ary to use two thicknesses for parts 1/8" thick. The suggestions are set out in detail in Mr. Olley's note Qy6/G24.3.21. -------- F.J.A. 23.8.21. Some pieces of sheet bakelite with paper and canvas bases have now been received from America for the above substitutions, viz:- Two pieces each of Bakelite dilecto (natural) 6" x 6" x 1/16". " " (black) 6" x 6" x 1/16" Continental bakelite 6" x 6" x 1/8". Two small pieces of 3 mm. (nearly 1/8") sheet bakelite, apparently with paper base, and a short rod of Contd. | ||