GB647626A - - Google Patents
Info
- Publication number
- GB647626A GB647626A GB647626DA GB647626A GB 647626 A GB647626 A GB 647626A GB 647626D A GB647626D A GB 647626DA GB 647626 A GB647626 A GB 647626A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thread
- nose
- tool
- bit
- spring
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
647,626. Percussive drills. HYMATIC ENGINEERING CO.. Ltd. Nov. 15, 1948, No. 29583. [Class 124] A bit retainer for a percussive drill comprises a helical spring having one end of reduced diameter .to engage screw thread on the collar of a bit and the other end enlarged to engage a thread on the nose of the tool. As shown, the collar f of a bit e has a thread, which may be of rounded section, which engages with a reduced portion d of a helical spring the other and larger end of which engages a thread on the nose of the tool a. The spring has a loop on the larger end to assist in unscrewing the spring from the nose of the tool.
Publications (1)
Publication Number | Publication Date |
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GB647626A true GB647626A (en) |
Family
ID=1749952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB647626D Active GB647626A (en) |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB647626A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980002704A1 (en) * | 1979-06-07 | 1980-12-11 | Joad Eng Ltd | Scabblers |
US4299293A (en) * | 1977-12-09 | 1981-11-10 | Nikolaev Igor V | Percussive tool angular position device |
-
0
- GB GB647626D patent/GB647626A/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4299293A (en) * | 1977-12-09 | 1981-11-10 | Nikolaev Igor V | Percussive tool angular position device |
WO1980002704A1 (en) * | 1979-06-07 | 1980-12-11 | Joad Eng Ltd | Scabblers |
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