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GB129443A - Improvements in Valve Gear for Rock Drills and other Percussion Tools. - Google Patents

Improvements in Valve Gear for Rock Drills and other Percussion Tools.

Info

Publication number
GB129443A
GB129443A GB1138518A GB1138518A GB129443A GB 129443 A GB129443 A GB 129443A GB 1138518 A GB1138518 A GB 1138518A GB 1138518 A GB1138518 A GB 1138518A GB 129443 A GB129443 A GB 129443A
Authority
GB
United Kingdom
Prior art keywords
valve
ports
cylinder
valve gear
rock
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
GB1138518A
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.)
Climax Rock Drill & Engineerin
RAYNAR DE HELE ST STEPHENS
Original Assignee
Climax Rock Drill & Engineerin
RAYNAR DE HELE ST STEPHENS
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 Climax Rock Drill & Engineerin, RAYNAR DE HELE ST STEPHENS filed Critical Climax Rock Drill & Engineerin
Priority to GB1138518A priority Critical patent/GB129443A/en
Publication of GB129443A publication Critical patent/GB129443A/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
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve

Landscapes

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

Abstract

129,443. St. Stephens, R. de H., and Climax Rock Drill &. Engineering Works, Ltd. July 11, 1918. Fluid-actuated gears; beat or lift valves. - In valve-gears for percussive tools and rock drilis wherein a lift valve is reversed at each end of the stroke by compression and the pressure of the supply, the valve i is in the form of a hollow cylinder which is moved transversely to its axis, and is housed in a rectangular cavity in a sleeve m having admission ports q, q<1> and its ends closed by caps l in which are ports n, n' leading to the cylinder admission passages d, e. The cylinder is provided with piston-controlled exhaust ports h, g.
GB1138518A 1918-07-11 1918-07-11 Improvements in Valve Gear for Rock Drills and other Percussion Tools. Expired GB129443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1138518A GB129443A (en) 1918-07-11 1918-07-11 Improvements in Valve Gear for Rock Drills and other Percussion Tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1138518A GB129443A (en) 1918-07-11 1918-07-11 Improvements in Valve Gear for Rock Drills and other Percussion Tools.

Publications (1)

Publication Number Publication Date
GB129443A true GB129443A (en) 1919-07-11

Family

ID=32344983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1138518A Expired GB129443A (en) 1918-07-11 1918-07-11 Improvements in Valve Gear for Rock Drills and other Percussion Tools.

Country Status (1)

Country Link
GB (1) GB129443A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680300A (en) * 1985-01-10 1987-07-14 Syntex (U.S.A.) Inc. Anti-inflammatory guanidines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680300A (en) * 1985-01-10 1987-07-14 Syntex (U.S.A.) Inc. Anti-inflammatory guanidines

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