GB1031182A - Improvements in or relating to grab winches - Google Patents

Improvements in or relating to grab winches

Info

Publication number
GB1031182A
GB1031182A GB285164A GB285164A GB1031182A GB 1031182 A GB1031182 A GB 1031182A GB 285164 A GB285164 A GB 285164A GB 285164 A GB285164 A GB 285164A GB 1031182 A GB1031182 A GB 1031182A
Authority
GB
United Kingdom
Prior art keywords
grab
assembly
ram
sheave
line
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
GB285164A
Inventor
Gordon Innes
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 GB285164A priority Critical patent/GB1031182A/en
Publication of GB1031182A publication Critical patent/GB1031182A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/12—Grabs actuated by two or more ropes
    • B66C3/125—Devices for control
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Abstract

1,031,182. Winches. VICKERS Ltd. Feb. 17, 1965 [Jan. 22, 1964], No. 2851/64. Heading B8B. A grab winch comprises a drum 3 driven by motor 1 to wind up or pay out a grab holding line 4 and a grab closing line 5, a sheave assembly 6 over which line 5 is passed and which assembly is linearly displaceable by a fluid ram 9, or mechanical means, to cause the grab (not shown) to open or close. The sheave assembly 6 is moved in vertical guides 10, Fig. 2 (not shown), the latter having a friction track longitudinally thereof which is engaged by a spring- loaded friction wheel mounted for rotation with a sheave 12 of assembly 6, this frictional engagement controlling the speed of rotation of the sheave 12 during linear movement of the assembly 6 to maintain a tension in the line 5 between sheaves 12 and 8. In the retracted position of the ram 9, the grab is closed, aided by gravity. The motor 1 and ram 9 are controlled by a single lever movable into four positions at right angles to each other, positions of the lever intermediate any two of the said four positions providing a combined operation of motor and ram.
GB285164A 1964-01-22 1964-01-22 Improvements in or relating to grab winches Expired GB1031182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB285164A GB1031182A (en) 1964-01-22 1964-01-22 Improvements in or relating to grab winches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB285164A GB1031182A (en) 1964-01-22 1964-01-22 Improvements in or relating to grab winches

Publications (1)

Publication Number Publication Date
GB1031182A true GB1031182A (en) 1966-06-02

Family

ID=9747165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB285164A Expired GB1031182A (en) 1964-01-22 1964-01-22 Improvements in or relating to grab winches

Country Status (1)

Country Link
GB (1) GB1031182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336176A1 (en) * 1983-10-05 1985-05-02 Karl Ing.(grad.) 2000 Hamburg Roden Control and coupling for single-motor multi-rope grab winches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336176A1 (en) * 1983-10-05 1985-05-02 Karl Ing.(grad.) 2000 Hamburg Roden Control and coupling for single-motor multi-rope grab winches

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