GB342356A - Improvements in or relating to percussive drills and the like - Google Patents
Improvements in or relating to percussive drills and the likeInfo
- Publication number
- GB342356A GB342356A GB3339829A GB3339829A GB342356A GB 342356 A GB342356 A GB 342356A GB 3339829 A GB3339829 A GB 3339829A GB 3339829 A GB3339829 A GB 3339829A GB 342356 A GB342356 A GB 342356A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- yoke
- shank
- striker
- slides
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/08—Means for driving the impulse member comprising a worm mechanism, i.e. a continuous guide surface with steadily rising and falling incline
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
342,356. Percussive tools. BAILLIE, S., Pool, Hayes Colliery, Short Heath, near Wolverhampton. Nov. 2, 1929, No. 33398. [Class 124.] The striker 14 is reciprocated by a rotating block 8 driven by an electromotor 2 and formed with a cam groove 10 engaging the arms of a yoke 11 which carries the striker and slides in guides 4. The tool 7 is retained by springs 20. The yoke may comprise a hollow cylinder partly surrounding the block 8. In a modification particularly suitable for cutting coal the yoke engages the the shank of the drill by means of collars 12b, with or without the interposition of a spring, and the squared end 12a of the shank slides in a socket in the block 8. In a further modification (not shown) suitable for drilling rock the rear end of the shank engages the block at the end of each backward stroke, giving an intermittent rotation. Any suitable form of mounting such as gimbals may be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3339829A GB342356A (en) | 1929-11-02 | 1929-11-02 | Improvements in or relating to percussive drills and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3339829A GB342356A (en) | 1929-11-02 | 1929-11-02 | Improvements in or relating to percussive drills and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB342356A true GB342356A (en) | 1931-02-02 |
Family
ID=10352417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3339829A Expired GB342356A (en) | 1929-11-02 | 1929-11-02 | Improvements in or relating to percussive drills and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB342356A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068198B (en) * | 1954-12-08 | 1959-11-05 | Wallram Hartmetall Gmbh | Impact mechanism for rotary hammer drills, rotary hammers, demolition hammers, etc. |
US7350592B2 (en) | 2005-02-10 | 2008-04-01 | Black & Decker Inc. | Hammer drill with camming hammer drive mechanism |
-
1929
- 1929-11-02 GB GB3339829A patent/GB342356A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068198B (en) * | 1954-12-08 | 1959-11-05 | Wallram Hartmetall Gmbh | Impact mechanism for rotary hammer drills, rotary hammers, demolition hammers, etc. |
US7350592B2 (en) | 2005-02-10 | 2008-04-01 | Black & Decker Inc. | Hammer drill with camming hammer drive mechanism |
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