GB782381A - Improvements in or relating to hoisting apparatus - Google Patents

Improvements in or relating to hoisting apparatus

Info

Publication number
GB782381A
GB782381A GB390755A GB390755A GB782381A GB 782381 A GB782381 A GB 782381A GB 390755 A GB390755 A GB 390755A GB 390755 A GB390755 A GB 390755A GB 782381 A GB782381 A GB 782381A
Authority
GB
United Kingdom
Prior art keywords
pump
valve
throttle
brake
motor
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
GB390755A
Inventor
John Stewart
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.)
ACE Machinery Ltd
Original Assignee
ACE Machinery 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 ACE Machinery Ltd filed Critical ACE Machinery Ltd
Priority to GB390755A priority Critical patent/GB782381A/en
Publication of GB782381A publication Critical patent/GB782381A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/08—Driving gear incorporating fluid motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/01—Winches, capstans or pivots
    • B66D2700/0125—Motor operated winches
    • B66D2700/0133—Fluid actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

782,381. Regulating pumps. A.C.E. MACHINERY, Ltd. Feb. 9, 1956 [Feb. 9, 1955], No. 3907/55. Class 102(1). [Also in Group XXX] The throttle 17 of an I.C. engine 4 driving a pump 6 is controlled by a pressure in the output circuit of the pump. The pump is shown supplying oil through a valve 13 and a throttle 18 to a motor 7 driving a platform hoist (see Group XXX). The back pressure causes a ram 15 to open the throttle 17 and a ram 14 to release a brake 16. When the valve 13 is turned through 90 degrees anti-clockwise from the position shown the motor 7 is connected to pump liquid back to the reservoir 5, and the pump 6 is connected to a back pressure valve 19 which sets up a back pressure sufficient to release the brake 16 but not to open the throttle 17. In the intermediate position of the valve 13 the motor 7 is isolated and the pump 6 connected directly to the reservoir 5 so that the throttle 17 is closed and the brake 16 applied. The rotary valve 13 may be replaced by a piston valve controlled by a cam. Relief valves 26, 17 are provided.
GB390755A 1955-02-09 1955-02-09 Improvements in or relating to hoisting apparatus Expired GB782381A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB390755A GB782381A (en) 1955-02-09 1955-02-09 Improvements in or relating to hoisting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB390755A GB782381A (en) 1955-02-09 1955-02-09 Improvements in or relating to hoisting apparatus

Publications (1)

Publication Number Publication Date
GB782381A true GB782381A (en) 1957-09-04

Family

ID=9767133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB390755A Expired GB782381A (en) 1955-02-09 1955-02-09 Improvements in or relating to hoisting apparatus

Country Status (1)

Country Link
GB (1) GB782381A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454912A (en) * 1980-08-12 1984-06-19 Omv Aktiengesellschaft Swab hoist use thereof in conveying crude oil and natural gas
GB2171152A (en) * 1985-02-20 1986-08-20 Perkins Engines Group Hydraulically powered system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454912A (en) * 1980-08-12 1984-06-19 Omv Aktiengesellschaft Swab hoist use thereof in conveying crude oil and natural gas
GB2171152A (en) * 1985-02-20 1986-08-20 Perkins Engines Group Hydraulically powered system

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