GB747255A - Rotary boring machines - Google Patents

Rotary boring machines

Info

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
Application number
GB29636/52A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB747255A publication Critical patent/GB747255A/en
Expired legal-status Critical Current

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)
  • Heat Treatment Of Articles (AREA)
  • Percussive Tools And Related Accessories (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.
GB29636/52A 1951-11-23 1952-11-24 Rotary boring machines Expired GB747255A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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
CH313506A (en) 1956-04-30
FR1066765A (en) 1954-06-09

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