GB1125755A - Improvements in or relating to hydraulically operated tools - Google Patents

Improvements in or relating to hydraulically operated tools

Info

Publication number
GB1125755A
GB1125755A GB17350/65A GB1735065A GB1125755A GB 1125755 A GB1125755 A GB 1125755A GB 17350/65 A GB17350/65 A GB 17350/65A GB 1735065 A GB1735065 A GB 1735065A GB 1125755 A GB1125755 A GB 1125755A
Authority
GB
United Kingdom
Prior art keywords
piston
chamber
sleeve
ports
stroke
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
GB17350/65A
Inventor
Edward Addison
John Peter Jackson
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.)
Vickers Ltd
Original Assignee
Vickers 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 Vickers Ltd filed Critical Vickers Ltd
Priority to GB17350/65A priority Critical patent/GB1125755A/en
Priority to US544598A priority patent/US3404603A/en
Priority to DE19661503222 priority patent/DE1503222A1/en
Priority to CH596766A priority patent/CH455675A/en
Publication of GB1125755A publication Critical patent/GB1125755A/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
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S173/00—Tool driving or impacting
    • Y10S173/04—Liquid operated

Abstract

1,125,755. Percussive tools. VICKERS Ltd. 22 April, 1966 [23 April, 1965], No. 17350/65. Heading B4C. An hydraulically-actuated percussive tool comprises a doubleacting piston 3 reciprooable by means of pressurized liquid such as oil, under the control of a slide valve 2 and an hydraulic spring 19 operating on the same liquid used for actuating the piston, the liquid being compressed by a member 18 thereby storing energy which is subsequently imparted by the member to the piston to assist its forward stroke. The valve 2 is in the form of a sleeve slidable in the housing I of the tool and the piston 3 is connected to a hammer 59 adapted to strike the end of a tool bit (66, Fig. 1). In operation, assuming the piston to be in the position shown, upon opening a valve 33 by means of a trigger 37, pressurized oil is fed from an inlet 31 through a chamber 38, a duct 42 and ports 79 in the sleeve into a chamber 12 thereby moving the piston forward on its working stroke; the pressure on the piston is additionally increased by means of pressurized oil in a chamber 19 (constituting the hydraulic spring) acting on the piston via the member 18. At the end of its working stroke the hammer strikes the tool bit, the piston then being in such a position that the ports 83 in the sleeve are uncovered, thereby allowing oil to flow from a chamber 15b, passage 22 and ports 23 in the piston and through a, duct 48 to act on the end of the sleeve. The sleeve then moves so as to close off the flow of pressurized oil to the chamber 12, the latter then being opened to exhaust via ports 79 in the sleeve. Pressurized oil now flows into a chamber 9 via, a groove 45 in the housing and ports 80 in the sleeve thereby moving the piston upwardly on its return stroke. During this stroke the member 18 acts as a piston and compresses the liquid in the chamber 19 thereby storing energy for the next working stroke.
GB17350/65A 1965-04-23 1965-04-23 Improvements in or relating to hydraulically operated tools Expired GB1125755A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB17350/65A GB1125755A (en) 1965-04-23 1965-04-23 Improvements in or relating to hydraulically operated tools
US544598A US3404603A (en) 1965-04-23 1966-04-22 Hydraulically operated tools
DE19661503222 DE1503222A1 (en) 1965-04-23 1966-04-22 Hydraulically operated tool
CH596766A CH455675A (en) 1965-04-23 1966-04-25 Hydraulic driven hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17350/65A GB1125755A (en) 1965-04-23 1965-04-23 Improvements in or relating to hydraulically operated tools

Publications (1)

Publication Number Publication Date
GB1125755A true GB1125755A (en) 1968-08-28

Family

ID=10093641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17350/65A Expired GB1125755A (en) 1965-04-23 1965-04-23 Improvements in or relating to hydraulically operated tools

Country Status (4)

Country Link
US (1) US3404603A (en)
CH (1) CH455675A (en)
DE (1) DE1503222A1 (en)
GB (1) GB1125755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516546A1 (en) * 1974-04-25 1975-11-20 Tampella Oy Ab AN IMPACT APPARATUS DRIVEN BY A PRESSURE LIQUID

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827507A (en) * 1972-09-18 1974-08-06 Technology Inc Const Hydraulically powered demolition device
US4256187A (en) * 1978-11-30 1981-03-17 Hughes Tool Company Impact tool with hydraulic cocking mechanism
US4444274A (en) * 1980-08-29 1984-04-24 Maruzen Kogyo Company Limited Liquid pressure striking device
BG38432A1 (en) * 1983-05-30 1985-12-16 Georgiev Hydraulic percussion mechanism
BG38433A1 (en) * 1983-05-30 1985-12-16 Georgiev Hydraulic percussion mechanism
US5794717A (en) * 1993-04-21 1998-08-18 Briggs; Roger Robarts Rock drill percussion mechanism
ZA948118B (en) * 1994-10-17 1996-03-25 Jarmo Uolevi Leppaenen Valve arrangement in a hydraulic percussive rock drill
US9685245B2 (en) * 2013-06-17 2017-06-20 Preferred Utilities Manufacturing Corporation Remotely installed fuel transfer tube closure system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183668A (en) * 1959-11-30 1965-05-18 Hydra Might Company Percussion type rock drills
US3088440A (en) * 1960-08-01 1963-05-07 Ingersoll Rand Co Impact tools
US3213615A (en) * 1961-07-11 1965-10-26 Atlas Copco Ab Hydraulically actuated reciprocable tools
US3150488A (en) * 1961-11-22 1964-09-29 Emmett L Haley Power devices
DE1503334A1 (en) * 1962-12-03 1969-11-06 Keelavite Hydraulics Ltd Hydraulic device for generating a reciprocating movement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516546A1 (en) * 1974-04-25 1975-11-20 Tampella Oy Ab AN IMPACT APPARATUS DRIVEN BY A PRESSURE LIQUID

Also Published As

Publication number Publication date
US3404603A (en) 1968-10-08
DE1503222A1 (en) 1969-04-03
CH455675A (en) 1968-07-15

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