US Patent: 81,953
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| Improved mechanism for operating the beds of planing-machines
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Patentee:
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| Henry F. Shaw (exact or similar names) - West Roxbury, MA |
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Patent Dates:
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| Granted: |
Sep. 08, 1868 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for S. A. Woods Machine Co.
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Description: |
| J. H. Adams - patent attorney
Like the immediately preceding patent 81,952, this patent is of interest because the two assignees were both important machine inventors and builders in their own rights.
My invention relates to the application, in such-machines, of a differential gear, in connection with an eccentric-shaft or sleeve, operating together upon the principle described in the patent, No. 64,915, granted to me on the 21st May, 1867. In my present improvement, a cylinder, having a spur-gear upon its internal surface, is fixed to the shaft which moves the bed of the planing-machine, upon which spur-gear rolls-a second cylinder, with a spur-gear upon its external surface, and hung upon a sleeve arranged eccentrically on the shaft which carries the first named cylinder. The cylinder with the external gear is prevented from rotating, but is allowed an oscillating movement by means of an arm attached to it, and, extending a short distance, is provided with a slot, at its end, which plays upon a pin attached to the side of the frame of the machine. The rotation of the eccentric-sleeve imparts a motion, to the cylinder having the external gear, and the teeth of the latter, engaging with the internal gear, impart a motion to the latter, the amount of motion depending upon the difference of the relative diameters of the two pitch-lines of the spur-gears.
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