GB276899A - 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
GB276899A
GB276899A GB779327A GB779327A GB276899A GB 276899 A GB276899 A GB 276899A GB 779327 A GB779327 A GB 779327A GB 779327 A GB779327 A GB 779327A GB 276899 A GB276899 A GB 276899A
Authority
GB
United Kingdom
Prior art keywords
main
fluid pressure
relating
piston
pressure operated
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
GB779327A
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 GB779327A priority Critical patent/GB276899A/en
Publication of GB276899A publication Critical patent/GB276899A/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)

Abstract

276,899. Rayner, G. H. T., and Rayner, P. March 21, 1927. Percussive hand tools. - The supply to the cylinder ends of a percussive tool is controlled by a fluid-actuated, hollow, roller-shaped, distributing-valve, and the main exhaust through ports c., d to the outlet g is controlled by the piston b. Cylinder compression is relieved by auxiliary ports e, f which are closed after the main ports and are alternately connected to the main outlet g by a piston valve j which is reversed by fluid pressure entering the cylinder to reverse the main piston after the main valve s has been reversed.
GB779327A 1927-03-21 1927-03-21 Improvements in, or relating to, rock drills and like fluid pressure operated tools Expired GB276899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB779327A GB276899A (en) 1927-03-21 1927-03-21 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779327A GB276899A (en) 1927-03-21 1927-03-21 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Publications (1)

Publication Number Publication Date
GB276899A true GB276899A (en) 1927-09-08

Family

ID=9839837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB779327A Expired GB276899A (en) 1927-03-21 1927-03-21 Improvements in, or relating to, rock drills and like fluid pressure operated tools

Country Status (1)

Country Link
GB (1) GB276899A (en)

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