US Patent: 1,033,776
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| Mechanical movement
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Patentee:
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| Wendell A. Barker (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Oct. 30, 1911 |
| Granted: |
Jul. 30, 1912 |
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Jeff Joslin
Vintage Machinery entry for Thomas Elevator Co.
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Description: |
| The mechanical movement is a linkage to connect a rotary shaft to a gear or clutch while allowing an angular advancing or retarding of their relative positions. It was primarily designed for use with a hoist to apply a friction band to the winding drum, but other applications were possible, such as to allow gears to be aligned for meshing before a clutch was released. |
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