US Patent: 2,780,944
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| Reversible drive for power tools
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Patent Dates:
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| Applied: |
Feb. 26, 1954 |
| Granted: |
Feb. 12, 1957 |
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Patent Pictures:
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Reversing portion of mechanism. Not shown are the planetary gears |
USPTO pdf tiff
Google Patents
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"mrpete222" YouTube video showing this speed reducer
"Vintage Machinery" entry for Ridge Tool Co.
"Vintage Machinery" entry for Supreme Products, Inc.
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Description: |
| Seen on YouTube: an example of this reversible speed reducer. The box is labeled Ridgid / Supreme Model No. 4100 Versamatic reversible power drill speed reducer / The Ridge Tool Company / Elyria, Ohio". This device may have been manufactured by Supreme for resale by Ridgid. |
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