Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 302
o give greater strength to the teeth, but imtil recentlythe only method of ])roducing it was by casting and, of course,cast gears were not ap])licable to elevator service. However,cut gears of this description have now been successfully producedand they are being ad()i)te(! in many other lines. 264… … Fig. 170. Helical Gear Rim, Pinion, and Brake PulleyCourtesy of Gurney Elevator Company strength due to the diagonal position of the teeth, which allows agreater number of teeth to be in mesh with the pinion at one time. The disadvantage, which is common to all spur gears, is itsextreme liability…
Electrical engineering
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