GB161761A - Improvements in percussive rock drills and like fluid pressure operated tools - Google Patents

Improvements in percussive rock drills and like fluid pressure operated tools

Info

Publication number
GB161761A
GB161761A GB364020A GB364020A GB161761A GB 161761 A GB161761 A GB 161761A GB 364020 A GB364020 A GB 364020A GB 364020 A GB364020 A GB 364020A GB 161761 A GB161761 A GB 161761A
Authority
GB
United Kingdom
Prior art keywords
fluid pressure
cylinder
pressure operated
operated tools
rock drills
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
GB364020A
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 GB364020A priority Critical patent/GB161761A/en
Publication of GB161761A publication Critical patent/GB161761A/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
    • B25D9/18—Valve arrangements therefor involving a piston-type slide valve

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

161,761. Rayner, G. H. T., and Rayner, P. Feb. 6, 1920. Addition to 138,304. Fluid-actuated gears; slide valves, cylindrical and piston.-The forward exhaust ports described in the parent Specification are dispensed with, the rearward ports c serve both the front and rear ends of the cylinder and co-operate with an auxiliary exhaust port e controlled by the valve f. The auxiliary exhaust groove e<2> communicates with the right-hand of the cylinder by a groove e<3>. Modified forms of the valve f, which permit a short valve stroke and the release of air trapped in the cylinder, are described.
GB364020A 1920-02-06 1920-02-06 Improvements in percussive rock drills and like fluid pressure operated tools Expired GB161761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB364020A GB161761A (en) 1920-02-06 1920-02-06 Improvements in percussive rock drills and like fluid pressure operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB364020A GB161761A (en) 1920-02-06 1920-02-06 Improvements in percussive rock drills and like fluid pressure operated tools

Publications (1)

Publication Number Publication Date
GB161761A true GB161761A (en) 1921-04-21

Family

ID=9762123

Family Applications (1)

Application Number Title Priority Date Filing Date
GB364020A Expired GB161761A (en) 1920-02-06 1920-02-06 Improvements in percussive rock drills and like fluid pressure operated tools

Country Status (1)

Country Link
GB (1) GB161761A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2852474B1 (en) * 2012-05-23 2019-03-06 Construction Tools GmbH Percussion device
CN111270982A (en) * 2020-03-12 2020-06-12 姚佳锋 Air-leg rock drill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2852474B1 (en) * 2012-05-23 2019-03-06 Construction Tools GmbH Percussion device
CN111270982A (en) * 2020-03-12 2020-06-12 姚佳锋 Air-leg rock drill
CN111270982B (en) * 2020-03-12 2021-05-14 江苏合海集团股份有限公司 Air-leg rock drill

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