US Patent: 1,490,783
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| Feed Gearing
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Patentee:
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| Howard A. Pedrick (exact or similar names) - Bala, Montgomery County, PA |
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Patent Dates:
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| Applied: |
Oct. 27, 1920 |
| Granted: |
Apr. 15, 1924 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Pedrick Tool & Machine Co.
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Description: |
| Abstract:
This invention relates to mechanism for controlling the rate of feed of a cutting tool or equivalent device and more especially a tool carried by a supporting structure such as a rotary boring bar. One object of said invention is to provide a novel form of feed gearing particularly designed to permit of a quick and convenient adjustment whereby a cutting tool may be caused to feed at a relatively slow rate such as is required when using a drill to bore a hole in solid material or to feed at a faster rate as when it is operating on the inside surface of a previously formed hollow structure. Another object of the invention is to provide a device of the above character which shall be substantial in construction, not likely to get out of order and of such a nature that it may be readily applied to apparatus already in use without requiring serious alteration thereof.
Claim:
The combination of a rotary boring bar; a gear driven thereby, a feed screw; a spindle connected to said feed screw ; a second gear-'on the spindle having a number of teeth different from that of the first gear; a third gear meshing with the two first gears and mounted to move bodily : with means for holding the third gear from bodily movement to cause rotation of the first gear by the boring bar to turn the second gear and the feed screw. |
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