GB262998A - Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor - Google Patents

Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor

Info

Publication number
GB262998A
GB262998A GB630726A GB630726A GB262998A GB 262998 A GB262998 A GB 262998A GB 630726 A GB630726 A GB 630726A GB 630726 A GB630726 A GB 630726A GB 262998 A GB262998 A GB 262998A
Authority
GB
United Kingdom
Prior art keywords
relating
valve mechanism
mechanism therefor
rock drills
reciprocating tools
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
GB630726A
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 GB630726A priority Critical patent/GB262998A/en
Publication of GB262998A publication Critical patent/GB262998A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)

Abstract

262,998. Holman Bros., Ltd., Holman, A. T., and Holman, P. M. March 6, 1926. Cylinders.-In a rock drill having flap distributing-valves, the cylinder 10 is constituted by a liner housed in a continuation of the valve chamber and is inserted from the right-hand end.
GB630726A 1926-03-06 1926-03-06 Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor Expired GB262998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB630726A GB262998A (en) 1926-03-06 1926-03-06 Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB630726A GB262998A (en) 1926-03-06 1926-03-06 Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor

Publications (1)

Publication Number Publication Date
GB262998A true GB262998A (en) 1926-12-23

Family

ID=9812109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB630726A Expired GB262998A (en) 1926-03-06 1926-03-06 Improvements in or relating to rock drills and like reciprocating tools and valve mechanism therefor

Country Status (1)

Country Link
GB (1) GB262998A (en)

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