Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1977-05-09
1979-10-23
Yuen, Henry C.
Machine element or mechanism
Gearing
Directly cooperating gears
74417, 74393, 74434, 74462, F16H 112, F16H 120
Patent
active
041716493
ABSTRACT:
A variable speed and direction power transmission attachment for driving the cutting tool carriage of a lathe or the like, the attachment having sets of intermeshing male and female cog gears. Certain of such sets each comprises a face gear having a plurality of concentric rows of tooth socket elements formed therein. A male cog gear is selectively settable to mesh with any of such rows to change the gear ratio. By changing the combined setting of different sets of gears, a wide variation in overall gear ratio may be obtained to provide many different feeding speeds of the carriage, suitable for general cutting and for screw thread cutting. A reversing mechanism, also constructed of intermeshing cog gears, enables the direction of drive to be reversed or the drive to be disconnected to permit manual drive of the carriage.
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patent: 2960884 (1960-11-01), Hill
patent: 3180172 (1965-04-01), Leggatt
patent: 3756091 (1973-09-01), Miller
Crowe John H.
Yuen Henry C.
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