GB597920A - Distributing valve for rock drills or like percussive tools - Google Patents

Distributing valve for rock drills or like percussive tools

Info

Publication number
GB597920A
GB597920A GB24677/45A GB2467745A GB597920A GB 597920 A GB597920 A GB 597920A GB 24677/45 A GB24677/45 A GB 24677/45A GB 2467745 A GB2467745 A GB 2467745A GB 597920 A GB597920 A GB 597920A
Authority
GB
United Kingdom
Prior art keywords
valve
face
acting
cylinder
percussive
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
GB24677/45A
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.)
Chicago Pneumatic Tool Co LLC
Original Assignee
Chicago Pneumatic Tool Co LLC
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 Chicago Pneumatic Tool Co LLC filed Critical Chicago Pneumatic Tool Co LLC
Publication of GB597920A publication Critical patent/GB597920A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

597,920. Valve gear for percussive tools. CHICAGO PNEUMATIC TOOL CO. Sept. 24, 1945, No. 24677. Convention date, Oct. 3, 1944. [Class 122 (ii)] A distributing valve 39 for a percussive tool is of annular form and is mounted in a valve chest and surrounds a bush 31 through which the rifle bar 28 passes. As shown, motive fluid passes through valve 42, ratchet ring 27 and the bore of the valve to the cylinder 12 and maintains the valve open by acting on the end face 53. The piston 11 is moved forward and the other end of the cylinder exhausts through groove 59 in the valve until the port 68 is uncovered to admit pressure fluid to act on the face 72 of a collar 57 on the valve to close the admission and exhaust ports and open admission to the other end of the cylinder by the end 56 uncovering the port 65. The valve is held in this position by the pressure of the motive fluid acting on the end 56 in opposition to that acting on the face 54 provided in the bore 55. The compression in the cylinder acting on the end face 53 again reverses the valve and the cycle is repeated.
GB24677/45A 1944-10-03 1945-09-24 Distributing valve for rock drills or like percussive tools Expired GB597920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US597920XA 1944-10-03 1944-10-03

Publications (1)

Publication Number Publication Date
GB597920A true GB597920A (en) 1948-02-05

Family

ID=22025245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24677/45A Expired GB597920A (en) 1944-10-03 1945-09-24 Distributing valve for rock drills or like percussive tools

Country Status (1)

Country Link
GB (1) GB597920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1366864A1 (en) * 2002-05-31 2003-12-03 Geismar Portable hydraulic power operated impact apparatus, such as a spike driver or tamper tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1366864A1 (en) * 2002-05-31 2003-12-03 Geismar Portable hydraulic power operated impact apparatus, such as a spike driver or tamper tool

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