GB217341A - Rotating hammers for rock drills or the like - Google Patents
Rotating hammers for rock drills or the likeInfo
- Publication number
- GB217341A GB217341A GB797923A GB797923A GB217341A GB 217341 A GB217341 A GB 217341A GB 797923 A GB797923 A GB 797923A GB 797923 A GB797923 A GB 797923A GB 217341 A GB217341 A GB 217341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lugs
- hammer
- shaft
- arms
- socket
- 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
- B25D11/066—Means for driving the impulse member using centrifugal or rotary impact elements
- B25D11/068—Means for driving the impulse member using centrifugal or rotary impact elements in which the tool bit or anvil is hit by a rotary impulse member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
Abstract
217,341. Aktieselskapet Fjeldbor, and Rasch, L. March 20, 1923. No Patent granted (Sealing fee not paid). Percussive hand tools.-One or more hammers 64 are pivoted to arms 52 mounted on a rotating shaft 16 and rotated therewith by means of lugs 54. The hammer, after striking the anvil block 8, rebounds from an abutment 45 fixed to the shaft 16. The shaft is driven by a flexible shaft fixed to a socket 19 through a multiple plate clutch 18 controlled by a hand lever 25 having its end 29 close to the tool handle 5. A handoperated twist mechanism is provided comprising a handle 13 screwed on to the casing and formed with lugs 14 engaging grooves in the tool socket 11. In a modified device shown in Fig. 4 a single hammer is used and the driving clutch consists of plates 32, 33 engaging the body 41 which rotates the arms 79 by means of lugs (not shown), and is arranged to balance the hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB797923A GB217341A (en) | 1923-03-20 | 1923-03-20 | Rotating hammers for rock drills or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB797923A GB217341A (en) | 1923-03-20 | 1923-03-20 | Rotating hammers for rock drills or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB217341A true GB217341A (en) | 1924-06-19 |
Family
ID=9843424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB797923A Expired GB217341A (en) | 1923-03-20 | 1923-03-20 | Rotating hammers for rock drills or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB217341A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241260B1 (en) | 1999-08-17 | 2001-06-05 | Black & Decker Inc. | Spring-loaded quick clamp chuck |
| US9283625B2 (en) | 2011-04-05 | 2016-03-15 | Milwaukee Electric Tool Corporation | Auto sizing chuck |
| US11084105B2 (en) | 2017-10-18 | 2021-08-10 | Milwaukee Electric Tool Corporation | Chuck assembly for a rotary power tool |
-
1923
- 1923-03-20 GB GB797923A patent/GB217341A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241260B1 (en) | 1999-08-17 | 2001-06-05 | Black & Decker Inc. | Spring-loaded quick clamp chuck |
| US9283625B2 (en) | 2011-04-05 | 2016-03-15 | Milwaukee Electric Tool Corporation | Auto sizing chuck |
| US10005133B2 (en) | 2011-04-05 | 2018-06-26 | Milwaukee Electric Tool Corporation | Auto sizing chuck |
| US10376966B2 (en) | 2011-04-05 | 2019-08-13 | Milwaukee Electric Tool Corporation | Auto sizing chuck |
| US11084105B2 (en) | 2017-10-18 | 2021-08-10 | Milwaukee Electric Tool Corporation | Chuck assembly for a rotary power tool |
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