US Patent: 148,884
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| Improvement in machines for making gear-wheel patterns
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Patentee:
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| Joseph L. Hewes (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 23, 1873 |
| Granted: |
Mar. 24, 1874 |
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Jeff Joslin
Vintage Machinery entry for Hewes & Phillips
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Description: |
| Here is a quote from the patent specification:"At the present time the pattern-cogs of the patterns used for molding cog-wheels are fitted into the runs by hand, by sawing and chiseling out dovetail grooves across the face of the pattern, making corresponding tenons on the blocks of which the teeth are to be formed, fitting in said blocks, and then dressing the blocks down to the finished shape."Throughout the range of pattern-making, which is an art requiring the greatest skill in all its branches, there is perhaps no part of it more difficult and requiring more skill than this part of the making of a pattern-wheel, for the wheels made from the pattern will be unsatisfactory unless the teeth are exactly uniform in size, shape, etc., as is well known to all makers and users of machinery."Now, I propose to do all the fitting of the rim and the teeth, and the finishing of the teeth, by mechanical devices, and thus not only secure the exact uniformity of shape and dimensions peculiar to the use of special tool for special work, but largely economize in time and labor as well."This patent was perhaps used by Hewes & Phillips of Newark, a maker of machine tools and drill presses, plus water valves, steam engines, and rock drills. |
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