GB423687A - Improvements in or relating to feed devices for portable drilling machines and the like - Google Patents
Improvements in or relating to feed devices for portable drilling machines and the likeInfo
- Publication number
- GB423687A GB423687A GB3202733A GB3202733A GB423687A GB 423687 A GB423687 A GB 423687A GB 3202733 A GB3202733 A GB 3202733A GB 3202733 A GB3202733 A GB 3202733A GB 423687 A GB423687 A GB 423687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nut
- lever
- pawl
- feed
- ratchet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/06—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by man-power
- B23B45/12—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by man-power by using a ratchet brace
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Working Implements (AREA)
Abstract
423,687. Drilling. CROFTON & CO. (ENGINEERS), Ltd., C., and CROFTON, H. B., 11, Marden Road South, Whitley Bay, Northumberland. Nov. 16, 1933, No. 32027. Addition to 409,234. [Class 83 (iii)] The feed nut 7 of the feed device according to the parent Specification has a ratchet wheel 9 keyed thereto at 10, and has rotatable thereon a hand lever 8 carrying a spring pawl 11. A spring 16 is interposed between the lug 6a on the drilling-machine 6 and the end of the nut to prevent rotation of the nut in the reverse direction to the feed when the pawl is slipping over the teeth of the ratchet on the idle stroke of the lever 8. A knurled head 7a on the nut provides for hand rotation thereof when the pawl has been disengaged by a trigger 14, for feeding the drill up to the work. One face of the lever 8 abuts on the head 7a and the ratchet wheel abuts on a shoulder 7b on the nut. A casing 12 attached to the lever 8 encloses the ratchet mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3202733A GB423687A (en) | 1933-11-16 | 1933-11-16 | Improvements in or relating to feed devices for portable drilling machines and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3202733A GB423687A (en) | 1933-11-16 | 1933-11-16 | Improvements in or relating to feed devices for portable drilling machines and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB423687A true GB423687A (en) | 1935-02-06 |
Family
ID=10331957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3202733A Expired GB423687A (en) | 1933-11-16 | 1933-11-16 | Improvements in or relating to feed devices for portable drilling machines and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB423687A (en) |
-
1933
- 1933-11-16 GB GB3202733A patent/GB423687A/en not_active Expired
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