US Patent: 2,572,479
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| Lathe Spindle Speed Control Mechanism
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Patentee:
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| William G. Hoelscher (exact or similar names) - Cincinnati, Hamilton County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 08, 1948 |
| Granted: |
Oct. 23, 1951 |
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Joel Havens
"Vintage Machinery" entry for American Tool Works Co.
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Description: |
| Claim:
It is customary practice to provide a wide range of lathe spindle speeds in order to rotate the Work at a cutting speed recommended for the work diameter, material, type of cutting tool, and other determinant factors. To achieve maximum efficiency it is important that the head stock be capable of speedy and convenient spindle speed selection in setting up the lathe for the various jobs. For this purpose the head stock transmission is provided with shiftable range selection gears in combination with speed selection gears to provide several ranges and individual speeds within the ranges. An example of this arrangement is disclosed in the patent to William G. Hoelscher, No. 2,332,381, issued 19 October, 1943. This transmission may be assembled to provide either twenty-seven, eighteen or nine speeds by making a relatively simple change in the gear train. The manufacturer thus is able to standardize the head stock and may alter it to provide the required number of speeds to suit customer requirements. The present structure follows generally the principles disclosed in this prior patent and is designed to provide speedier and more convenient selectivity and improved performance. |
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