US Patent: 36,113
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Planing Metal
Improvement in Planing Metal Machines
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Patentee:
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| Wm. Sellers (exact or similar names) - Philadelphia, PA |
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Patent Dates:
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| Granted: |
Aug. 05, 1862 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for William Sellers & Co.
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Description: |
| Abstract:
The object of my invention is, first, to simplify the construction of planing-machines for metal, second; to provide a more thorough system of bracing the bed between the uprights; third, to impart a smooth and uniform motion to the table upon which is placed the metal to be planed; and, fourth, to place the pulley-shaft so that its axis may be parallel with the line of motion of the table, thus enabling these machines to be placed parallel to lathes and permitting a better arrangement of workshops. In all the forms of planers in common use there are motions in common, the principal one of which is the reciprocating motion of the table, and arrangements for lengthening or short- citing its stroke. They are all arranged so that the variation of length of stroke can be combined with the adjustment of the general position of the table under the cutting-tool, and the reciprocating motion to the table is usually accomplished in one of three ways, viz: by a chain passing several times around a drum to which it is securely fastened, and having its ends attached to opposite ends of the table, the rotation of the drum giving a rectilinear motion to the table, which will be made in either direction as the motion of the drum is reversed; second, by a screw having its nut attached to the table, the revolution of the screw in either direction producing the desired motion in the table; and, third, the rack-and-pinion motion, in which the rack is attached to the under side of the table, the rotation of the pinion in either direction causing a corresponding movement to the table. This last is probably the one in most common use, and it is this form which my invention is intended to improve. The nature of my invention consists in furnishing the table with a rack, and in operating this rack, not by the ordinary spur-gearing, but by a peculiar form of spiral gearing, which enables the driving-shaft to cross the bed diagonally passing out in a position near enough to the upright to enable the driving-belts to be within reach of the operator.
Claim:
The use of cogged gearing for planing-machines wherein one of the series of cogs has its contact-surfaces formed by straight lines in the direction of its width, while the other series have their contact-surfaces arranged spirally about an axis which is placed at an angle to the line of motion of the first series. |
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