GB191201349A - Improvements in and relating to Rock Drilling Engines. - Google Patents

Improvements in and relating to Rock Drilling Engines.

Info

Publication number
GB191201349A
GB191201349A GB191201349DA GB191201349A GB 191201349 A GB191201349 A GB 191201349A GB 191201349D A GB191201349D A GB 191201349DA GB 191201349 A GB191201349 A GB 191201349A
Authority
GB
United Kingdom
Prior art keywords
relating
valve
rock drilling
handle
chamber
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
Inventor
John George Leyner
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
Application granted granted Critical
Publication of GB191201349A publication Critical patent/GB191201349A/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)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

1349. Leyner, J. G. March 25, 1911. Percussive drills.-In a rock drill, compressed air passes to a chamber 22 through a swivelling inlet elbow 27 and passes from the chamber 22 to the valve-chest 2 through a port 19 in a hollow tapering or bell-shaped valve 18 with a circular stem 20 to which a handle 21 is secured. The valve 18 is rapidly opened by throwing the handle into an horizontal position against a stop 40.
GB191201349D 1911-03-25 1911-03-25 Improvements in and relating to Rock Drilling Engines. Expired GB191201349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191201349T 1911-03-25

Publications (1)

Publication Number Publication Date
GB191201349A true GB191201349A (en) 1912-06-25

Family

ID=32569210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191201349D Expired GB191201349A (en) 1911-03-25 1911-03-25 Improvements in and relating to Rock Drilling Engines.

Country Status (1)

Country Link
GB (1) GB191201349A (en)

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