US Patent: 1,490,783
|
Feed Gearing
|
Patentee:
|
|
Howard A. Pedrick (exact or similar names) - Bala, Montgomery County, PA |
|
Patent Dates:
|
Applied: |
Oct. 27, 1920 |
Granted: |
Apr. 15, 1924 |
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Joel Havens "Vintage Machinery" entry for Pedrick Tool & Machine Co.
|
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. |
|