US Patent: 354,773
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Buzz-planer
Face jointer
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Patentee:
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| Frank H. Clement (exact or similar names) - Rochester, NY |
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Patent Dates:
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| Applied: |
Jun. 13, 1885 |
| Granted: |
Dec. 21, 1886 |
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Jeff Joslin
Vintage Machinery entry for Frank H. Clement
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Description: |
| This patent is sometimes cited as the patent for the wedge-bed design, but Jonathan Grosvenor was first, 12 years previous; see patent 152,364. Clement is more explicit about the advantages of this design: "The triangular adjusting-slides are very rigid, being cast in one piece. The adjusting devices can be all arranged in the adjusting-slides, and need have no connection with the tables directly. The upper faces of the slides ca be planed off together after they are fitted to the frame, so that absolute truth of the table-surface can thus be assured without subsequent hand-fitting or adjusting of any kind, it being assumed, of course, that the upper and under surfaces of the tables themselves are first parallel—a comparatively simple matter to accomplish." Another advantage of the wedge-bed design is that the tables do not take the strain of raising the tables, which in other designs can cause them to spring slightly. Clement's design includes a means for making "sprung" joints, which involved loosening setscrews to allow the outfeed table to sag. |
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