|US Patent: 1,415,515|
|Change Gear Mechanism
|Not known to have been produced|
||Aug. 11, 1920
||May 09, 1922
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endey Machine Co. History
"Vintage Machinery" entry for Hendey Machine Co.
|Southgate & Southgate - patent attorneys
This invention relates to change gear mechanism designed for use in lathes, drills and other machine tools, in which a wide range of working speeds is desired.
It is the object of my invention to provide a mechanism of this character by which a large number of speed changes may be maintained by means of a relatively small number of change gears, and by the use of simple and reliable controlling devices.
In the preferred form, I mount the gears upon three parallel shafts and control their positions by means of two hand shift levers.
By using three gears on each shaft, I obtain nine different speed ratios between the driving and the driven shafts.|