US Patent: 569,597
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Boring Machine
Joist Drill
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Patentee:
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| Elliot E. Anthony (exact or similar names) - Detroit, MI |
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Patent Dates:
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| Applied: |
Feb. 03, 1896 |
| Granted: |
Oct. 20, 1896 |
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Patent Pictures:
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1 | 2
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Image courtesy and (C) Frank Kosmerl, eBay handle tool-frank |
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Russ Allen.
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Description: |
| Designed for boring holes through joists in ceilings, floors, and walls. A handled feed bar is placed across the joist and a split sliding clamp is used to adjust the drilling height for the right angle drill.
Known example is marked only with the patent date. The feed bar is 22" long with a chuck accepting a standard braces four sided tapered tang bits. |
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