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GB171146A - Improvements in fluid pressure operated percussive tools - Google Patents

Improvements in fluid pressure operated percussive tools

Info

Publication number
GB171146A
GB171146A GB2289420A GB2289420A GB171146A GB 171146 A GB171146 A GB 171146A GB 2289420 A GB2289420 A GB 2289420A GB 2289420 A GB2289420 A GB 2289420A GB 171146 A GB171146 A GB 171146A
Authority
GB
United Kingdom
Prior art keywords
vacuum
fluid pressure
pressure operated
atmospheric
tool
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
GB2289420A
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.)
VACUUM TOOL Co Ltd
Original Assignee
VACUUM TOOL Co Ltd
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 VACUUM TOOL Co Ltd filed Critical VACUUM TOOL Co Ltd
Priority to GB2289420A priority Critical patent/GB171146A/en
Publication of GB171146A publication Critical patent/GB171146A/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)
  • Percussive Tools And Related Accessories (AREA)

Abstract

171,146. Vacuum Tool Co., Ltd., and Gawley, G. J. Aug. 3, 1920. Percussive hand tools.-The power piston a of a percussive tool is reciprocated by a vacuum and atmospheric pressure controlled by sleeve valves u, t arranged between the cylinder and an outer . casing divided into vacuum and atmospheric compartments n, m. The valves are actuated by tappets w, w<1>, v, v<1> and have ports u<1>, u<2>, t<1>, t<2> which register respectively with vacuum and atmospheric ports s, s', r, r'. At the end of the percussive tool is arranged a spring buffer x. The rising of the hammer block x<1> under suction is prevented by the ring x<2>.
GB2289420A 1920-08-03 1920-08-03 Improvements in fluid pressure operated percussive tools Expired GB171146A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2289420A GB171146A (en) 1920-08-03 1920-08-03 Improvements in fluid pressure operated percussive tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2289420A GB171146A (en) 1920-08-03 1920-08-03 Improvements in fluid pressure operated percussive tools

Publications (1)

Publication Number Publication Date
GB171146A true GB171146A (en) 1921-11-03

Family

ID=10186763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2289420A Expired GB171146A (en) 1920-08-03 1920-08-03 Improvements in fluid pressure operated percussive tools

Country Status (1)

Country Link
GB (1) GB171146A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445819A (en) * 1982-02-01 1984-05-01 Walling John B Single action pneumatic powered spring retractable pump
US4515532A (en) * 1982-02-01 1985-05-07 Walling John B Single action pneumatic powered spring retractable pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445819A (en) * 1982-02-01 1984-05-01 Walling John B Single action pneumatic powered spring retractable pump
US4515532A (en) * 1982-02-01 1985-05-07 Walling John B Single action pneumatic powered spring retractable pump

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