GB977370A - A jib sheet winch - Google Patents

A jib sheet winch

Info

Publication number
GB977370A
GB977370A GB1504863A GB1504863A GB977370A GB 977370 A GB977370 A GB 977370A GB 1504863 A GB1504863 A GB 1504863A GB 1504863 A GB1504863 A GB 1504863A GB 977370 A GB977370 A GB 977370A
Authority
GB
United Kingdom
Prior art keywords
shaft
gear
clutch
crank
gears
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
GB1504863A
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.)
CLYDE ENGINEERING Co Pty
Original Assignee
CLYDE ENGINEERING Co Pty
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
Priority claimed from AU16796/62A external-priority patent/AU264465B2/en
Application filed by CLYDE ENGINEERING Co Pty filed Critical CLYDE ENGINEERING Co Pty
Publication of GB977370A publication Critical patent/GB977370A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74Capstans
    • B66D1/7463Accessories
    • B66D1/7468Handles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74Capstans
    • B66D1/7421Capstans having a vertical rotation axis
    • B66D1/7431Capstans having a vertical rotation axis driven manually only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H9/00Marine propulsion provided directly by wind power
    • B63H9/04Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08Connections of sails to masts, spars, or the like
    • B63H9/10Running rigging, e.g. reefing equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

977,370. Controlling change-speed gear and clutches. CLYDE ENGINEERING CO. PTY. Ltd. April 17, 1963 [April 19, 1962], No. 15048/63. Headings F2D and F2L. [Also in Division B8] In a geared system for hand cranking a pair of winch-capstans 55, Fig. 1, from crank handles 8 on a pair of pedestals 3, first changespeed gears-incorporated in crank cases 5 at the top of each pedestal are coupled through vertical shafts to second change-speed gears in gear cases 1 at the base, and the drives are selectively interconnected by a clutch-engaged cardan shaft 68 so that one or other of the capstans 55 may be driven from both sets of crank handles 8. The change-speed gear in the crank case 5, Fig. 2, comprises a pair of oppositely acting ratchet mechanisms 14, 15 on the crank shaft 6 arranged so that reversed rotation of the crank handles selects alternative drive ratios to a vertical shaft 13 through bevel gears 9, 11 or 10, 12. The gears are so arranged that the shaft 13 is rotated in the same direction irrespective of the direction of rotation of the cranks 8. The vertical shaft 13 is coupled through the second change-speed gear to an axially aligned shaft 22 carrying a sprocket 52 for a chain drive 58 (Fig. 1) to the capstan 55. The second change-speed gear comprises a slidable dog clutch 29 keyed to the shaft 22 and alternatively engageable with dog teeth 21 on the end of the shaft 13 for direct drive or with teeth 28 on a gear 26 driven through gears 23, 27 on a countershaft 24 to obtain an overdrive ratio. A ratchet gear 59 is arranged in the drive between the shaft 22 and the sprockets 52 to permit the capstan 55 to be overrun by hand in taking-up slack of jib sheets &c. A further ratchet gear 62 arranged between the shaft 22 and a fixed bearing housing 64 prevents reverse rotation or unwinding of the capstan 55 under all conditions of the gears. The countershaft 24 carries a dog clutch 72 for transmission of the drive through bevel gears 66, 67 to the cardan shaft 68 interconnecting the two pedestals. The gear system of the other pedestal, Fig. 3 (not shown), is identical to the above with the exception of the clutch 72 which is omitted. The clutch 72, Fig. 5, is controlled from a throw-over lever 76 which moves a slider 81 through a crank pin 79 and link 80. The slider 81 is pressed into driving engagement by a spring 84 and the arrangement is such that the crank pin 79 moves over centre on release of the clutch 72 so that the spring 84 then acts to hold the clutch disengaged. The change-speed clutch 29 is operated by alternative actuation of a pair of foot levers 30, 31 coupled by links 32, 33 to a rockable shaft 35. A pin 38 on the shaft 35 is coupled by a link 39 to a slider 40 which is resiliently coupled by springs 45, 48 to a second 47 carrying the dog actuating fork 46. The first slider 40 is engaged by a spring 44 which operates in conjunction with the off-centre position of the pin 38 to hold the gear in one engaged position. A throw-over latch 49 is adapted to engage a locking bar 50 on the rockable shaft 35 to hold the gear in neutral and prevent operation of the pedals. Tubular stops 42a, 47a are arranged between the slider 40, 47 and operate so that the dog teeth are disengaged positively.
GB1504863A 1962-04-19 1963-04-17 A jib sheet winch Expired GB977370A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU16796/62A AU264465B2 (en) 1962-04-19 A jib sheet winch

Publications (1)

Publication Number Publication Date
GB977370A true GB977370A (en) 1964-12-09

Family

ID=3706699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1504863A Expired GB977370A (en) 1962-04-19 1963-04-17 A jib sheet winch

Country Status (1)

Country Link
GB (1) GB977370A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426010A1 (en) * 1978-05-18 1979-12-14 Charbonnier Antoine Mechanism preventing wrong direction of rotation of capstan - uses ratchet rings pressed together by axial compression spring
EP0182547A2 (en) * 1984-11-19 1986-05-28 Lewmar Marine Limited Drive transmission in sailing craft
EP2058225A1 (en) * 2007-11-07 2009-05-13 Harken Italy S.P.A. Pedestal for a sailing boat
US10358324B2 (en) * 2015-01-20 2019-07-23 Chrysadev Electric winch crank

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426010A1 (en) * 1978-05-18 1979-12-14 Charbonnier Antoine Mechanism preventing wrong direction of rotation of capstan - uses ratchet rings pressed together by axial compression spring
EP0182547A2 (en) * 1984-11-19 1986-05-28 Lewmar Marine Limited Drive transmission in sailing craft
EP0182547A3 (en) * 1984-11-19 1987-11-25 Lewmar Marine Limited Drive transmission in sailing craft
EP2058225A1 (en) * 2007-11-07 2009-05-13 Harken Italy S.P.A. Pedestal for a sailing boat
US7900569B2 (en) 2007-11-07 2011-03-08 Harken Italy, S.P.A. Pedestal for a sailing boat
US10358324B2 (en) * 2015-01-20 2019-07-23 Chrysadev Electric winch crank

Similar Documents

Publication Publication Date Title
US3429202A (en) Gear boxes
US2386540A (en) Multispeed gear transmission
GB977370A (en) A jib sheet winch
GB1436170A (en) Multispeed power transmission
US2599559A (en) Transmission
US2633753A (en) Transmission
US3154962A (en) Automatic gear mechanisms
GB483069A (en) Improvements in change-speed boxes
US1958607A (en) Change speed transmission gear
GB1101525A (en) Improvements in or relating to a change speed transmission
US1780460A (en) Engine-clutch-control-actuated speed-change mechanism for transmission gearing
US2117654A (en) Power transmission mechanism
US2773573A (en) Interlock mechanism
US1363044A (en) Transmission mechanism
US2305927A (en) Change speed gearing
JPH10159923A (en) Transmission reciprocal switching device
US5145469A (en) Transmission ratio selector mechanism
US2159980A (en) Overdrive gearing
USRE18561E (en) A cobfobation op dela wabe
GB1243945A (en) A change-speed gearbox, for agricultural vehicles
GB918521A (en) Change speed gearing
GB486589A (en) Improvements in or relating to variable-speed power-transmission gearing
US2684599A (en) Transmission
US2213978A (en) Mechanical movement
US858764A (en) Power-transmission apparatus.