US Patent: 1,010,574
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| Raising and lowering mechanism
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Patentees:
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| Louis W. Rawson (exact or similar names) - Worcester, MA |
| William W. Bird (exact or similar names) - Worcester, MA |
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Patent Dates:
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| Applied: |
Jan. 18, 1909 |
| Granted: |
Dec. 05, 1911 |
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Jeff Joslin
Vintage Machinery entry for Washburn Shops
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Description: |
| "The object of the invention is to provide a new and improved raising and lowering mechanism whereby a part may be raised or lowered simply by manipulating an operating means such as a handle, which mechanism will lock when doing down even without a load and hold the part to be raised or lowered in adjusted position. The invention is particularly applicable as a means for raising and lowering spindles such as are used under drawing stands, tables, cameras, etc." This patent date appeared on a drill press made by the Washburn Shops, which was operated by the assignee school. |
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