. Automotive industries . 24 deg. 42 min. 55 deg. 21 min. 40 sec. :<• min. Iitch Teeth Outside 1 dam. in Ins. Angle 25 deg. 50 min. 53 sec 19 deg. 3 1 min. 21 deg. 47 min 29 deg. 7 :;s:i 19 deg. 23 deg. 30 min 7 2:::, 2 1 deg. 51 min t 013 22 deg. -,1 rain. llll ,■, 7 088 25 deg. .in min 32 sec 7 19 deg. 45 min 21 iUk ::i; nun 28 deg ) i min all installations. The working portion of the Fabroil gear,which is the trade name of the compressed cotton gear soldby the General Electric Co., is cotton, which is held highlycompressed between steel shro
. Automotive industries . 24 deg. 42 min. 55 deg. 21 min. 40 sec. :<• min. Iitch Teeth Outside 1 dam. in Ins. Angle 25 deg. 50 min. 53 sec 19 deg. 3 1 min. 21 deg. 47 min 29 deg. 7 :;s:i 19 deg. 23 deg. 30 min 7 2:::, 2 1 deg. 51 min t 013 22 deg. -,1 rain. llll ,■, 7 088 25 deg. .in min 32 sec 7 19 deg. 45 min 21 iUk ::i; nun 28 deg ) i min all installations. The working portion of the Fabroil gear,which is the trade name of the compressed cotton gear soldby the General Electric Co., is cotton, which is held highlycompressed between steel shrouds or end plates. The cot-ton receives a vacuum-oil treatment, which acts as an in-itial lubrication. These gears have been in use now forover eight years, and about twenty manufacturers of pas-senger automobiles are now using them. They are gener-ally furnished in the form of gear blanks, finished readyfor tooth cutting. The Fabroil gear is generally used asa camshaft or an idler gear and the sizes specified by dif-. timing gears em-on Buick 1921 car. gears are certain to give correct timing and not to jump*a tooth occasionally, as may happen with other No adjustments are necessary. 5. Vibrations whichoccur at critical speeds do not show themselves in theway of noise or hammer. Furthermore, there is no crit- June 10, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 1301 ical speed in the gears at which they may vibrate. fitting of the gears requires close work in the fac-tory and entails careful attention, the job when passed isgood for thousands of miles without any expenditure foradjustment or upkeep. The Apperson company uses a cast iron gear on thecamshaft and a drop forged steel gear on the pitch diameter of these gears is 6% and 3% in. Theteeth are cut with a ten pitch cutter. The angle of spiralis 27 deg. 16 min. The normal circular pitch is the lead is in. right hand spiral. The Apper-son installation mentioned employs o
Size: 1429px × 1748px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
