GB230376A - Improvements in or relating to pneumatically operated percussive hand tools - Google Patents

Improvements in or relating to pneumatically operated percussive hand tools

Info

Publication number
GB230376A
GB230376A GB2275424A GB2275424A GB230376A GB 230376 A GB230376 A GB 230376A GB 2275424 A GB2275424 A GB 2275424A GB 2275424 A GB2275424 A GB 2275424A GB 230376 A GB230376 A GB 230376A
Authority
GB
United Kingdom
Prior art keywords
valve
cylinder
ports
port
relating
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
GB2275424A
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 GB2275424A priority Critical patent/GB230376A/en
Publication of GB230376A publication Critical patent/GB230376A/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

Landscapes

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

Abstract

230,376. Stevens, C. H. Sept. 26, 1924. Fluid-actuated gears. - A disc valve v is mounted in an aperture u of a disc d mounted between discs c, c<1> housed in members a, b situated between the cylinder and handle of a percussive tool. The discs are centred by flanges f, f<1>, and the ports aligned by a dowel pin. Air ports g, g' lead to the lower valve face which controls cylinder ports o, j<1> leading to the upper end of the cylinder. Similarly the upper surface of the valve controls a supply through ports o to the lower end of the cylinder. The valve is reversed when the exhaust port p is opened. A supplementary exhaust from below the piston is effected by an ejector r which is supplied with pressure fluid through a valve controlled port q and a suction port connected to port o.
GB2275424A 1924-09-26 1924-09-26 Improvements in or relating to pneumatically operated percussive hand tools Expired GB230376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2275424A GB230376A (en) 1924-09-26 1924-09-26 Improvements in or relating to pneumatically operated percussive hand tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2275424A GB230376A (en) 1924-09-26 1924-09-26 Improvements in or relating to pneumatically operated percussive hand tools

Publications (1)

Publication Number Publication Date
GB230376A true GB230376A (en) 1925-03-12

Family

ID=10184529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2275424A Expired GB230376A (en) 1924-09-26 1924-09-26 Improvements in or relating to pneumatically operated percussive hand tools

Country Status (1)

Country Link
GB (1) GB230376A (en)

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