GB379374A - Improvements in or relating to rock-drills and like tools - Google Patents

Improvements in or relating to rock-drills and like tools

Info

Publication number
GB379374A
GB379374A GB1582331A GB1582331A GB379374A GB 379374 A GB379374 A GB 379374A GB 1582331 A GB1582331 A GB 1582331A GB 1582331 A GB1582331 A GB 1582331A GB 379374 A GB379374 A GB 379374A
Authority
GB
United Kingdom
Prior art keywords
drills
rock
tools
relating
holman
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
GB1582331A
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.)
Holman Brothers Ltd
Original Assignee
Holman Brothers Ltd
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 Holman Brothers Ltd filed Critical Holman Brothers Ltd
Priority to GB1582331A priority Critical patent/GB379374A/en
Publication of GB379374A publication Critical patent/GB379374A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/082—Retainers consisting of a swinging yoke or latching means

Landscapes

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

Abstract

379,374. Percussive drills. HOLMAN, J. L., HOLMAN, P. M., and HOLMAN BROS., Ltd., Camborne, Cornwall. May 29, 1931, No. 15823. [Class 124.] A gauge length for gauging the distance between the collar and the inner end of a drill steel is provided on a percussive drill by the distance between the face 20 and the lug 18. The steel is retained by the stirrup 14.
GB1582331A 1931-05-29 1931-05-29 Improvements in or relating to rock-drills and like tools Expired GB379374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1582331A GB379374A (en) 1931-05-29 1931-05-29 Improvements in or relating to rock-drills and like tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1582331A GB379374A (en) 1931-05-29 1931-05-29 Improvements in or relating to rock-drills and like tools

Publications (1)

Publication Number Publication Date
GB379374A true GB379374A (en) 1932-08-29

Family

ID=10066160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1582331A Expired GB379374A (en) 1931-05-29 1931-05-29 Improvements in or relating to rock-drills and like tools

Country Status (1)

Country Link
GB (1) GB379374A (en)

Similar Documents

Publication Publication Date Title
GB332914A (en) Improvements in or relating to drill steels
GB379374A (en) Improvements in or relating to rock-drills and like tools
GB399773A (en) Improvements in or relating to pneumatic hammers and similar percussive tools
GB324265A (en) Improvements in hammer rock drills and like percussive apparatus
GB346217A (en) Improvements in rock drill shanks, steels or the like
GB294414A (en) Improvements in or relating to power-driven percussion tools
GB522765A (en) Improvements relating to percussive rock drills
GB435259A (en) Improvements in or relating to rock drills and like percussive tools
GB356009A (en)
GB468737A (en) Improvements in and relating to chuck arrangements for receiving tool-bits of percussive tools
GB481536A (en) Improvements in or relating to rock drills and like tools
GB230320A (en) Improvements in or relating to cradles for machine tools such as rock drills and the like
GB477205A (en) Improvements relating to portable power-driven percussive tools
GB232346A (en) Improvements in rock drills
GB521323A (en) Improvements in shank formations of percussive drilling tools
GB346946A (en)
GB319339A (en) Improvement in water tube for rock drills
GB356438A (en) Improvements in, and relating to, rock drills and like fluid pressure operated tools
GB265649A (en) Improvements in or relating to rock drills and like percussive tools
GB277422A (en) Improvements in handles for percussion drills, jumpers or the like
GB386889A (en) Improvements in or relating to pneumatic hammers and the like
GB204751A (en) Improvements in or relating to dies for making or sharpening rock and coal cutting tools
GB479798A (en) Improvements in rotary tools for cleaning, chipping and scaling plates, tubes and other surfaces
GB308542A (en) Improvements relating to percussive rock-drilling tools
GB474295A (en) Improvements in or relating to percussion boring tools or jumpers