GB115605A - Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools. - Google Patents

Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools.

Info

Publication number
GB115605A
GB115605A GB1925417A GB1925417A GB115605A GB 115605 A GB115605 A GB 115605A GB 1925417 A GB1925417 A GB 1925417A GB 1925417 A GB1925417 A GB 1925417A GB 115605 A GB115605 A GB 115605A
Authority
GB
United Kingdom
Prior art keywords
valve
supply
fluid
piston
rayner
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
GB1925417A
Inventor
George Henry Turton Rayner
Percy Rayner
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 GB1925417A priority Critical patent/GB115605A/en
Publication of GB115605A publication Critical patent/GB115605A/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

115,605. Rayner, G. H. T., and Rayner, P. Dec. 31. 1917. Fluid-actuated gears; piston valves ; beat or lift valves.-In a roch drill, the admission is controlled by a combined beat and piston slide valve which is moved in one direction by fluid constantly supplied to one area, and in the other direction by the compression aided by an auxiliary main supply. The valve v has a tapered end communicating with a small supply duct b<1>, slides over main inlet ports a<1>, a<3>, and has a small port z which intermittingly or, in a modification, continuously communicates with the port a<1> to supply fluid to increase the compression in the rear end of the cylinder during reversal. The valve sents itself on the ends; of the valve chamber around the supply passages c, c<1>. The main exhaust is controlled by the piston through ports e, e<1>.
GB1925417A 1917-12-31 1917-12-31 Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools. Expired GB115605A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1925417A GB115605A (en) 1917-12-31 1917-12-31 Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1925417A GB115605A (en) 1917-12-31 1917-12-31 Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools.

Publications (1)

Publication Number Publication Date
GB115605A true GB115605A (en) 1918-05-16

Family

ID=32484239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1925417A Expired GB115605A (en) 1917-12-31 1917-12-31 Improvements in Valve Apparatus for Rock Drills and the like Fluid Pressure Operated Tools.

Country Status (1)

Country Link
GB (1) GB115605A (en)

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