GB647500A - Improvements in or relating to tools for use in excavating and other operations - Google Patents
Improvements in or relating to tools for use in excavating and other operationsInfo
- Publication number
- GB647500A GB647500A GB2573047A GB2573047A GB647500A GB 647500 A GB647500 A GB 647500A GB 2573047 A GB2573047 A GB 2573047A GB 2573047 A GB2573047 A GB 2573047A GB 647500 A GB647500 A GB 647500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bit
- plunger
- chuck
- clutch
- handle
- 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
- B25D3/00—Hand chisels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
647,500. Percussive drills. RICE, C. J. Sept. 22. 1947. Nos. 25730/47 and 11669/48. [Class 124] A chuck for a hand tool comprising a body portion, a chuck for receiving a bit, and a plunger having an extension forming a handle so that the plunger may be moved toward and away from the chuck, is adapted to permit the insertion and removal of the bit without dismantling and to present the inner end of the bit for direct impact by the plunger. As shown a bit 9 having a flange 10 is secured between the pivoted parts 2, 3 of a clutch which is held in the closed position by a slide 4. A plunger 5 which may have a ring 8 at the striking end slides in a tubular body 1 to deliver blows on the end of the bit. Other forms of clutch, e.g. without pivot pins, Fig. 7, (not shown) and with recesses to accommodate lugs on the bit, Figs. 16 and 17, (not shown) are described. The plunger may be locked in its innermost position by a pin 16 engaging in a bayonet slot 15 in a sleeve 7 or the locking device may comprise a rotatable non-sliding sleeve, Fig. 12, (not shown). The body and handle 6 may be covered with electrically insulating substance, e.g. rubber. A rubber washer may be used to cushion idle blows.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2573047A GB647500A (en) | 1947-09-22 | 1947-09-22 | Improvements in or relating to tools for use in excavating and other operations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2573047A GB647500A (en) | 1947-09-22 | 1947-09-22 | Improvements in or relating to tools for use in excavating and other operations |
Publications (1)
Publication Number | Publication Date |
---|---|
GB647500A true GB647500A (en) | 1950-12-13 |
Family
ID=10232354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2573047A Expired GB647500A (en) | 1947-09-22 | 1947-09-22 | Improvements in or relating to tools for use in excavating and other operations |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB647500A (en) |
-
1947
- 1947-09-22 GB GB2573047A patent/GB647500A/en not_active Expired
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