US Patent: 2,112,141
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| Hydraulic Control for Variable Speed Transmissions
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Patentee:
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| Harry C. Clay (exact or similar names) - Columbus, Bartholomew County, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 08, 1935 |
| Granted: |
Mar. 22, 1938 |
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Joel Havens
"Vintage Machinery" entry for Reeves Pulley Co.
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Description: |
| Abstract:
The present application relatet1o hydraulic controls, primarily intended for controlling variable speed transmissions of the well-known "Reeves" type. A primary object of the invention is to provide means whereby the power delivered by a constantly operating motor may be utilized, as required, to adjust the ratio between input speed and output speed of such a transmission. A further object of the invention is to improve hydraulic controls, generality. A further object of the invention is to provide, in an organization of the character indicated, particularly effective means whereby the operation of the control is utilized to brink the control to rest after exactly the required degree of adjustment of the transmission elements has been effected.
Claim:
For use with a variable speed transmission including an element movable to vary the ratio between the input speed and the output speed thereof, a control mechanism comprising a reversible fluid motor having two fluid inlets, a source of fluid under pressure, a conduit connecting said source to supply fluid to one of said motor inlets to drive said motor in one direction, a conduit connecting said source to supply fluid under pressure to the other of said motor inlets to drive said motor in the opposite direction, valve means connected in said conduits for controlling flow therethrough, and comprising a valve member shiftable in one direction from neutral position to direct fluid flow to one of said motor inlets and shiftable in the opposite direction from neutral position to direct fluid flow to the other of said motor inlets, means connecting said motor to drive the movable element of the transmission in opposite directions, a rock shaft, a beveled pinion fast on said rock shaft, an arm angularly related to said rock shaft, oscillable about the axis of said rock shaft, and operatively connected to said valve, a beveled gear loosely mounted on said arm and meshing with said beveled pinion, a second beveled pinion loosely mounted on said rock shaft and meshing with said beveled gear, and means operatively connecting said element-driving means to rotate said second beveled pinion. |
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