GB1075791A - Hydraulically operated tools - Google Patents

Hydraulically operated tools

Info

Publication number
GB1075791A
GB1075791A GB20595/63A GB2059563A GB1075791A GB 1075791 A GB1075791 A GB 1075791A GB 20595/63 A GB20595/63 A GB 20595/63A GB 2059563 A GB2059563 A GB 2059563A GB 1075791 A GB1075791 A GB 1075791A
Authority
GB
United Kingdom
Prior art keywords
cylinder
piston
ports
liquid
grooves
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
GB20595/63A
Inventor
Christopher Val Chester-Browne
Edward Addison
David Mccandlish
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 GB20595/63A priority Critical patent/GB1075791A/en
Priority to US367066A priority patent/US3314488A/en
Priority to CH672164A priority patent/CH404513A/en
Priority to DE1964V0026019 priority patent/DE1286979B/en
Publication of GB1075791A publication Critical patent/GB1075791A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Actuator (AREA)
  • Drilling And Boring (AREA)
  • Hydraulic Motors (AREA)

Abstract

1,075,791. Percussive drills. VICKERS Ltd. May 11, 1964 [May 23, 1963; Oct. 31, 1963], Nos. 20595/63 and 43113/63. Heading B4C. [Also in Division F1] An hydraulically-operated tool, such as a percussive drill, comprises a housing 101 having a cylinder 111 for a piston 124 which is adapted to reciprocate under liquid pressure so that an element 135 on the piston strikes a tool bit 12 retained in the tool for limited movement by means of a link 11, the cylinder being rotatable so as to control the flow of liquid into one or other of chambers 168, 169 via ducts 114, 115 and ports 122, 123 in the cylinder. As shown, the piston 124 is reciprocable in the cylinder 112 whch has two sets of four grooves 120, 121 adapted to communicate each side of the piston alternately with the liquid pressure via sets of circumferentially-spaced ports 122, 117 and 123, 119. The cylinder is rotated by means of a liquid pressure gear-type motor 130, one gear 129 on the cylinder meshing with a second gear 132. The end 125B of the piston rod 125 is connected to a weight 135 on which is threaded a plate (136, Fig. 1) the plate having a number of holes (137) adapted to slide over guide tubes (138) for pressure springs 141. In operation, upon depression of a lever (167) to actuate a spool valve (165), and with the cylinder in the position shown liquid is fed into an annular groove 113 and, via ports 117, grooves 120 and ports 122, into the cylinder space 168 to drive the piston, the liquid in the space 169 on the other side of the piston being exhausted via ports 123, grooves 121, ports 119 and annular groove 115. Liquid is also fed, via an adjustable needle valve, to the motor 130 thereby rotating the cylinder so as to bring the grooves 120, 121 into communication with a different group of the circumferentially spaced ports 122, 117, 123, 119; the speed of rotation of the cylinder may be adjusted by means of the needle valve. A spring-type accumulator is mounted within a control block 102 in communication with the annular groove 113. Spring buffers (145, Fig. 1) are provided to cushion overtravel of the weight 135. When the tool is used for tamping or vibrating concrete the tool bit may be rigidly connected to the weight.
GB20595/63A 1963-05-23 1963-05-23 Hydraulically operated tools Expired GB1075791A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB20595/63A GB1075791A (en) 1963-05-23 1963-05-23 Hydraulically operated tools
US367066A US3314488A (en) 1963-05-23 1964-05-13 Hydraulically operated tool
CH672164A CH404513A (en) 1963-05-23 1964-05-22 Hydraulically operated tool
DE1964V0026019 DE1286979B (en) 1963-05-23 1964-05-22 Hydraulic impact or impact device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20595/63A GB1075791A (en) 1963-05-23 1963-05-23 Hydraulically operated tools

Publications (1)

Publication Number Publication Date
GB1075791A true GB1075791A (en) 1967-07-12

Family

ID=10148526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20595/63A Expired GB1075791A (en) 1963-05-23 1963-05-23 Hydraulically operated tools

Country Status (2)

Country Link
US (1) US3314488A (en)
GB (1) GB1075791A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490549A (en) * 1968-08-13 1970-01-20 Westinghouse Air Brake Co Hydraulic percussive drill
US4282937A (en) * 1976-04-28 1981-08-11 Joy Manufacturing Company Hammer
US7878348B2 (en) * 2007-10-09 2011-02-01 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Robotic-movement payload lifter and manipulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US784703A (en) * 1904-12-17 1905-03-14 Henry Potter Percussive hand-tool.
US912234A (en) * 1905-08-15 1909-02-09 Alfred J Doughty Pneumatic hammer.
US1419269A (en) * 1920-01-27 1922-06-13 Keller Harry Rivet breaker
GB298935A (en) * 1927-07-14 1928-10-15 Arthur Treve Holman Improvements in or relating to fluid-actuated rock-drills and similar tools
US1784012A (en) * 1929-12-12 1930-12-09 Ingersoll Rand Co Front head for pneumatic tools
BE564122A (en) * 1957-05-16
US3204534A (en) * 1963-01-24 1965-09-07 Raymond Int Inc Drawbar multiplier

Also Published As

Publication number Publication date
US3314488A (en) 1967-04-18

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