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).
Visit to E.N.V. Motor Company regarding their Gleason cut gears and hardening plant.
| Identifier | ExFiles\Box 49\1\ Scan116 | |
| Date | 10th December 1919 | |
| X 3617 COPY. Ple. to Wor. {Arthur Wormald - General Works Manager} c. to BY. {R.W. Bailey - Chief Engineer} c. to Sft. {Mr Swift} Ple.5/G10.12.19. Re Visit to E.N.V. Motor Coy. and Gleason Cut Gears. I saw the Works Manager, Mr. Hukins, and explained that after the visit of our Mr. Simpson last Saturday, Mr. Wormald (our Works Manager) wishes me to come over and see them so that we could do all possible to help in giving them, all they wanted so that they could supply the best possible gear and deliver as soon as possible. Mr. Hukins expressed his thanks and we went into the trouble of which I will report at once to Mr. Bailey. When the interview was almost completed, Mr. Straker of Brazil Straker, appeared, he having come along on the spiraloid gear question, and I was placed in the care of the foreman. After talking a few minutes with him I asked if I could see the machine. It was now dinner hour but there was one machine working, and I must say the machine impressed one as built to produce work. They are at present cutting some gears for the Sunbeam, viz:-61 teeth 5 DP. They are roughed out first - taking about 1 1/2 hours and then finished on another machine, which operation takes about 3 hours. The Gleason Coy. supply a cheaper machine specially built for roughing out. I might mention that a "Cutter Head" complete with cutters costs about £40 and a set of "cutters" only cost about £30. After talking gears for a time I asked if I could see the Hardening Plant, and having viewed same I must say that the Gleason Coy. had evidently decided that it was no use trying to cut a good pair of gears if you did not try the best means possible to retain them as such whilst hardening. HARDENING PLANT. The quenching tank stands about 4 ft. to 4ft. 6ins. above ground, and I should judge it to be about 4 ft. in diameter. Standing above the oil is a stand to receive the Gear for quenching. The face of the stand is serrated so that when the Gear is placed on same, oil can pass under the bottom face of the gear for cooling. One the centre of the stand are 4 loose jaws, which form a circle equal to the diameter of the bore of the blank which is going to be quenched. The centre of the bores have a special disc attached so that when the ram comes down on to the blank, the blank receives pressure both on the flat face and on the top angle, also a taper spigot is attached to the end of the ram. Contd. | ||