US Patent: 150,253
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| Profiling-Machines
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Patentee:
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| Edward G. Parkhurst (exact or similar names) - Hartford, Hartford County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 28, 1872 |
| Granted: |
Apr. 28, 1874 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.
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Description: |
| Abstract:
My invention consists in the construction and arrangement of certain parts of a profiling- machine, whereby a former can be cut from a model or pattern while both are fixed upon the bed-plate, and the model removed and duplicates cut from the former exactly similar to the original without turning the bedplate or in any manner altering the position of the former after it is cut. In the profiling-machines of ordinary construction the model is fixed to the bed-plate, and a former-pin attached to the slide which carries the cutting-tool is held in close contact with it while the cutting-tool passes around the piece to be cut to the same form, likewise fixed to the bed-plate, and makes a former which shall reproduce the given model. Then the bedplate is turned around one hundred and eighty degrees, so as to change the relative position of the two pieces and bring the former under the forming-pin and the cutter in a position. to cut duplicates as the forming -pin travels around the former. In this operation it is impossible to exactly change the relative position of the pieces, so that inaccuracies will occur which prevent the duplicates from being exactly like the original. To remedy this is the object of my invention.
Claim:
The two parallel spindles f g, with interchangeable former-pin and cutting-tool, when arranged with intermediate gearing, so that either can be driven by the pulley while the other is clamped, and this mechanism is attached to traversing frames which cause the spindles always to move in similar and parallel directions. |
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