GB356437A - Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools - Google Patents

Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools

Info

Publication number
GB356437A
GB356437A GB2461030A GB2461030A GB356437A GB 356437 A GB356437 A GB 356437A GB 2461030 A GB2461030 A GB 2461030A GB 2461030 A GB2461030 A GB 2461030A GB 356437 A GB356437 A GB 356437A
Authority
GB
United Kingdom
Prior art keywords
relating
fluid pressure
valve apparatus
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
GB2461030A
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.)
PERCY THORPE RAYNER
Original Assignee
PERCY THORPE RAYNER
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 PERCY THORPE RAYNER filed Critical PERCY THORPE RAYNER
Priority to GB2461030A priority Critical patent/GB356437A/en
Publication of GB356437A publication Critical patent/GB356437A/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
    • B25D2209/007—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 not coaxial with the piston

Abstract

356,437. Valve gear for rock-drills and percussive tools. RAYNER, G. H. T., 14, Broomhall Road, and RAYNER, P. T., 37, Ashland Road, both in Sheffield. Aug. 16, 1930, No. 24610. [Class 122 (ii).] In a gear of the kind described in Specification 356,421, ports 19 for continually exhausting fluid from the ends of the valve chamber are arranged in the end collars of the valve, the fluid passing therethrough to the exhaust ports 11, 12. The cylinder grooves associated with the ports 13, 14 described in the prior case are dispensed with.
GB2461030A 1930-08-16 1930-08-16 Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools Expired GB356437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2461030A GB356437A (en) 1930-08-16 1930-08-16 Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2461030A GB356437A (en) 1930-08-16 1930-08-16 Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools

Publications (1)

Publication Number Publication Date
GB356437A true GB356437A (en) 1931-09-10

Family

ID=10214367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2461030A Expired GB356437A (en) 1930-08-16 1930-08-16 Improvements in, and relating to, valve apparatus for rock drills and like fluid pressure operated tools

Country Status (1)

Country Link
GB (1) GB356437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1802426A1 (en) * 2004-10-20 2007-07-04 Atlas Copco Rock Drills AB Percussion device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1802426A1 (en) * 2004-10-20 2007-07-04 Atlas Copco Rock Drills AB Percussion device
EP1802426A4 (en) * 2004-10-20 2010-08-04 Atlas Copco Rock Drills Ab Percussion device

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