US Patent: 2,010
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| Machine for mortising
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Patentee:
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| James King (exact or similar names) - Morristown, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 18, 1841 |
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Jeff Joslin
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Description: |
| From "Journal of the Franklin Institute": "The shank of the chisel is cylindrical and fits into the end of a slide; and for the purpose of turning the face of the chisel in opposite directions, a pin, or handle, projects from the shank and plays in a notch cut out of the slide for that purpose. A helical spring is put on to the pin, or handle, which spring bears against its head and against the face of the slide, and consequently holds the chisel in its place whether turned with its face one way or the other."The slide has rack teeth an it into which the teeth of two pinions work—there are rack teeth also on the inner face of the box in which the slide moves, into which one of these pinions gear; and on the shaft, or axle, of this pinion a handle is attached for the purpose of working the chisel; by this arrangement the chisel will be moved double the distance, through which it would move if the pinion turned on its own axis. The other pinion above mentioned, has a spiral spring wound on its axis in the manner of a watch spring, which is coiled up by forcing down the spring, and which carries back the chisel when the handle is liberated."Claim.—'What I claim, and desire to secure by letters patent, is the manner of applying and using the spiral spring on the handle for confining the handle in any desired position; and likewise the manner of applying a spiral spring for returning the slide and chisel, in combination with a mortising machine, such as is herein described, the whole operating substantially as set forth.'" |
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