GB747255A - Rotary boring machines - Google Patents
Rotary boring machinesInfo
- Publication number
- GB747255A GB747255A GB29636/52A GB2963652A GB747255A GB 747255 A GB747255 A GB 747255A GB 29636/52 A GB29636/52 A GB 29636/52A GB 2963652 A GB2963652 A GB 2963652A GB 747255 A GB747255 A GB 747255A
- Authority
- GB
- United Kingdom
- Prior art keywords
- teeth
- action
- spring
- percussive
- nov
- 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
- B25D11/10—Means for driving the impulse member comprising a cam mechanism
- B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
- B25D11/106—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool cam member and cam follower having the same shape
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
747,255. Percussive drills. LICHTBLAU, W. Nov. 24, 1952 [Nov. 23, 1951], No. 29636/52. Class 124 A rotary boring machine in which percussive action is imparted simutaneously with the rotary movement by the action of a toothed member in the housing with a toothed member connected to the drill steel has the number of teeth on each member so arranged relative 'to the number of revolutions per minute that the percussive action has a frequency of 8,500 to 11.500 blows per minute. As shown, a housing 1 has mounted therein a member 7 having teeth on a ring 6 urged by a spring 11 into engagement with teeth on a ring 6a attached to a part 5 carrying a drill steel in a socket 3, the part 5 being driven by a shaft 8 on which the member 7 is slidable. As the member 5 rotates the part 7 is moved by the sliding action of the teeth, against the spring 11 and as the points of the teeth pass over each other the part 7 moves by the spring action and strikes a blow on the part 5. The member 7 may be mounted in leaf springs 12 for limited rotary movement. If an air motor is employed exhaust air carrying with it some oil may be used to cool and lubricate the teeth. The slope of either side of the teeth may be different.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE313506X | 1951-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB747255A true GB747255A (en) | 1956-03-28 |
Family
ID=6140880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29636/52A Expired GB747255A (en) | 1951-11-23 | 1952-11-24 | Rotary boring machines |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH313506A (en) |
FR (1) | FR1066765A (en) |
GB (1) | GB747255A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0051923A1 (en) * | 1980-11-11 | 1982-05-19 | Kango Wolf Power Tools Limited | Portable power-operated drill |
GB2209134A (en) * | 1987-08-27 | 1989-05-04 | William James Lowe | Electric power tool and adapter |
GB2396130A (en) * | 2002-12-10 | 2004-06-16 | Black & Decker Inc | Apparatus producing self-exciting hammer action in rotary power tool |
EP1504852A3 (en) * | 2003-08-06 | 2006-06-07 | Hitachi Koki Co., Ltd. | Impact drill |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1043247B (en) * | 1955-03-07 | 1958-11-13 | Hwf Hartmetall Werkzeug Fabrik | Drilling device for mining with a boring bar set in vibration by a crank drive with the interposition of springs |
US3107083A (en) * | 1960-07-01 | 1963-10-15 | Charles W Pewthers | Impact hammer |
-
1952
- 1952-11-22 CH CH313506D patent/CH313506A/en unknown
- 1952-11-22 FR FR1066765D patent/FR1066765A/en not_active Expired
- 1952-11-24 GB GB29636/52A patent/GB747255A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0051923A1 (en) * | 1980-11-11 | 1982-05-19 | Kango Wolf Power Tools Limited | Portable power-operated drill |
GB2209134A (en) * | 1987-08-27 | 1989-05-04 | William James Lowe | Electric power tool and adapter |
GB2396130A (en) * | 2002-12-10 | 2004-06-16 | Black & Decker Inc | Apparatus producing self-exciting hammer action in rotary power tool |
GB2396130B (en) * | 2002-12-10 | 2005-09-28 | Black & Decker Inc | Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus |
US7036608B2 (en) | 2002-12-10 | 2006-05-02 | Black & Decker Inc. | Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus |
EP1504852A3 (en) * | 2003-08-06 | 2006-06-07 | Hitachi Koki Co., Ltd. | Impact drill |
Also Published As
Publication number | Publication date |
---|---|
FR1066765A (en) | 1954-06-09 |
CH313506A (en) | 1956-04-30 |
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