GB321182A - Improvements in, or relating to, rock drills and like fluid pressure operated tools - Google Patents

Improvements in, or relating to, rock drills and like fluid pressure operated tools

Info

Publication number
GB321182A
GB321182A GB2210928A GB2210928A GB321182A GB 321182 A GB321182 A GB 321182A GB 2210928 A GB2210928 A GB 2210928A GB 2210928 A GB2210928 A GB 2210928A GB 321182 A GB321182 A GB 321182A
Authority
GB
United Kingdom
Prior art keywords
relating
ports
fluid pressure
pressure operated
operated 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
GB2210928A
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 GB2210928A priority Critical patent/GB321182A/en
Publication of GB321182A publication Critical patent/GB321182A/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)

Abstract

321,182. Rayner, G. H. T., and Rayner, P. July 30, 1928. Percussive tools.-The distributing valve of a rock drill or like tool consists of an annular plate k which oscillates axially inside a valve chest o mounted to surround the twist bar d. The admission of pressure fluid for the forward stroke is by way of ports g, p, r, and for the return stroke by way of ports g, q, s, and passage t. Reversal of the valve is effected by cushioning pressure from each end in turn. In addition to the main exhaust ports v, w, auxiliary exhaust ports x, y in the cylinder, or z, z<1> in the piston. may be provided. Reference has been directed by the Comptroller to Specification 301,862.
GB2210928A 1928-07-30 1928-07-30 Improvements in, or relating to, rock drills and like fluid pressure operated tools Expired GB321182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2210928A GB321182A (en) 1928-07-30 1928-07-30 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2210928A GB321182A (en) 1928-07-30 1928-07-30 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Publications (1)

Publication Number Publication Date
GB321182A true GB321182A (en) 1929-10-30

Family

ID=10174034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2210928A Expired GB321182A (en) 1928-07-30 1928-07-30 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Country Status (1)

Country Link
GB (1) GB321182A (en)

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