US Patent: 2,278,263
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| Speed Indicator Means
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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: |
Nov. 25, 1940 |
| Granted: |
Mar. 31, 1942 |
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Joel Havens
"Vintage Machinery" entry for American Tool Works Co.
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Description: |
| Claim:
In certain types of transmissions, such as those in the headstock of a lathe, a great many speed changes are necessary. It is also essential that the operator be able to read the indicator quickly. In the past, a great many indicator means have been provided, but they have not been compact and have not lent themselves to glance reading. Problems of compact indication arise particularly where the shifting is done mechanically. The present invention has particular application to a mechanical type shift, but is not limited to such use. In many instances, it is necessary to use a plurality of shifting levers; that is, one lever which shifts the mechanism into ranges, and another lever which shifts the mechanism into speeds within the respective ranges. The problem of keeping the indicator plate down to small dimensions and localizing the area in which the reading takes place where a great many speeds are employed has been a difficult one. |
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