GB817574A - Pneumatic tools - Google Patents
Pneumatic toolsInfo
- Publication number
- GB817574A GB817574A GB2883555A GB2883555A GB817574A GB 817574 A GB817574 A GB 817574A GB 2883555 A GB2883555 A GB 2883555A GB 2883555 A GB2883555 A GB 2883555A GB 817574 A GB817574 A GB 817574A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tool
- wedges
- arms
- spring
- thrust wedge
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/04—Other methods or devices for dislodging with or without loading by devices with parts pressed mechanically against the wall of a borehole or a slit
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Sawing (AREA)
- Gripping On Spindles (AREA)
Abstract
817,574. Percussive tools. HARDY, E. Oct. 9, 1956 [Oct. 10, 1955], No. 28835/55. Class 124. A pneumatic tool has an attachment comprising a thrust wedge adapted to be driven by the tool at least two other wedges with means for attachment to the tool the thrust wedge being driven by the tool between the other two wedges. As shown, a thrust wedge 7 has a shank 8 formed to fit the tool holder of a percussive tool, and the thin edge enters between a second pair of wedges 11 each of which is connected by a bolt 19, 20 to a rectangular plate 15 with the interposition of a knife edge 22 and a spring 21. A second rectangular plate 14 is bolted to the tool and has an arm 16 pivotally connected to it at each corner the free ends of the arms being pivotally connected to the free ends of similar arms pivoted to the plate 15. A coil spring 18 biases the arms 16 into the extended position. In a modification, Fig. 3 (not shown), the spring 18 is replaced by a pair of cylinder and piston devices.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB817574A true GB817574A (en) | 1959-08-06 |
Family
ID=1741298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2883555A Expired GB817574A (en) | 1955-10-10 | Pneumatic tools |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB817574A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3101706A (en) * | 1960-08-15 | 1963-08-27 | Fletcher Co H E | Method for stone splitting |
| GB2172227A (en) * | 1985-03-14 | 1986-09-17 | Sermec Engineering Ltd | Hydraulic wedge unit |
| GB2176169A (en) * | 1985-06-05 | 1986-12-17 | Sri Parakrama Wije Ilukkumbure | Jack bolt |
-
1955
- 1955-10-10 GB GB2883555A patent/GB817574A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3101706A (en) * | 1960-08-15 | 1963-08-27 | Fletcher Co H E | Method for stone splitting |
| GB2172227A (en) * | 1985-03-14 | 1986-09-17 | Sermec Engineering Ltd | Hydraulic wedge unit |
| GB2176169A (en) * | 1985-06-05 | 1986-12-17 | Sri Parakrama Wije Ilukkumbure | Jack bolt |
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