GB342356A - Improvements in or relating to percussive drills and the like - Google Patents

Improvements in or relating to percussive drills and the like

Info

Publication number
GB342356A
GB342356A GB3339829A GB3339829A GB342356A GB 342356 A GB342356 A GB 342356A GB 3339829 A GB3339829 A GB 3339829A GB 3339829 A GB3339829 A GB 3339829A GB 342356 A GB342356 A GB 342356A
Authority
GB
United Kingdom
Prior art keywords
block
yoke
shank
striker
slides
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
GB3339829A
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
Priority to GB3339829A priority Critical patent/GB342356A/en
Publication of GB342356A publication Critical patent/GB342356A/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
    • B25D11/08—Means for driving the impulse member comprising a worm mechanism, i.e. a continuous guide surface with steadily rising and falling incline

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)

Abstract

342,356. Percussive tools. BAILLIE, S., Pool, Hayes Colliery, Short Heath, near Wolverhampton. Nov. 2, 1929, No. 33398. [Class 124.] The striker 14 is reciprocated by a rotating block 8 driven by an electromotor 2 and formed with a cam groove 10 engaging the arms of a yoke 11 which carries the striker and slides in guides 4. The tool 7 is retained by springs 20. The yoke may comprise a hollow cylinder partly surrounding the block 8. In a modification particularly suitable for cutting coal the yoke engages the the shank of the drill by means of collars 12b, with or without the interposition of a spring, and the squared end 12a of the shank slides in a socket in the block 8. In a further modification (not shown) suitable for drilling rock the rear end of the shank engages the block at the end of each backward stroke, giving an intermittent rotation. Any suitable form of mounting such as gimbals may be used.
GB3339829A 1929-11-02 1929-11-02 Improvements in or relating to percussive drills and the like Expired GB342356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3339829A GB342356A (en) 1929-11-02 1929-11-02 Improvements in or relating to percussive drills and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3339829A GB342356A (en) 1929-11-02 1929-11-02 Improvements in or relating to percussive drills and the like

Publications (1)

Publication Number Publication Date
GB342356A true GB342356A (en) 1931-02-02

Family

ID=10352417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3339829A Expired GB342356A (en) 1929-11-02 1929-11-02 Improvements in or relating to percussive drills and the like

Country Status (1)

Country Link
GB (1) GB342356A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068198B (en) * 1954-12-08 1959-11-05 Wallram Hartmetall Gmbh Impact mechanism for rotary hammer drills, rotary hammers, demolition hammers, etc.
US7350592B2 (en) 2005-02-10 2008-04-01 Black & Decker Inc. Hammer drill with camming hammer drive mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068198B (en) * 1954-12-08 1959-11-05 Wallram Hartmetall Gmbh Impact mechanism for rotary hammer drills, rotary hammers, demolition hammers, etc.
US7350592B2 (en) 2005-02-10 2008-04-01 Black & Decker Inc. Hammer drill with camming hammer drive mechanism

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