US3809368A - Marine winch - Google Patents

Marine winch Download PDF

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Publication number
US3809368A
US3809368A US00337458A US33745873A US3809368A US 3809368 A US3809368 A US 3809368A US 00337458 A US00337458 A US 00337458A US 33745873 A US33745873 A US 33745873A US 3809368 A US3809368 A US 3809368A
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US
United States
Prior art keywords
spindle
casing
drive
winch
turret
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 - Lifetime
Application number
US00337458A
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English (en)
Inventor
C Lawrence
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.)
Knowsley Engineering Ltd
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Knowsley Engineering Ltd
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Filing date
Publication date
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Publication of US3809368A publication Critical patent/US3809368A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/003—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion the gear-ratio being changed by inversion of torque direction
    • F16H3/005—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion the gear-ratio being changed by inversion of torque direction for gearings using gears having orbital motion
    • 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
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7421—Capstans having a vertical rotation axis
    • B66D1/7431—Capstans having a vertical rotation axis driven manually only
    • 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
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7484—Details concerning gearing arrangements, e.g. multi-speed
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19172—Reversal of direction of power flow changes power transmission to alternate path

Definitions

  • Unidirectional stepless clutch means are UNITED STATES PATENTS provided in the drive lines to enable the three output ratios to be acheived and also to enable the outer cas- 3,711,065 l/l973 Lawrence; 254/!50 R ing to Over run 3,621,730 11/1971 Jennings 192/4892 7 3.581.854 6/1971 Versoy 254/150 R X 3 Claims, 8 Drawing Figures l l b 131d 1 1 l [1 l 6 1312 -2OO b PATENTED MAY 7 I974 SHEET 3 BF 7 FIGZ MTENTED MAY 7 1974 SHEET l [1F 7 PATENTEUMAY 7 I974 SHEET 5 [IF 7 PATENTED MY 7 I974 SHEET 8 OF 7 PIC-3.6.
  • This invention relates to a marine winch for hauling sheets, lifts, halyards and analogous tackle.
  • Second unidirectional clutch means are operatively located between the sleeve and the drum and permit relative rotation between said sleeve and said drum in a direction opposite to said one direction of rotation only.
  • An operating spindle is located axially of the turret and rotatable relative thereto.
  • Reduction gearing is adapted to transmit drive from said operating spindle to a flared circular lower part of said rotatable sub-casing, said gearing including two output gear wheels engaging diametrically opposite regions of a toothed ring formed within said flared circular lower portion of said rotatable sub-casing.
  • the reduction gearing is arranged to drive the output gear wheels in two ratios of say 3.5 l and II 1 selectable on rotating the operating spindle in opposite directions.
  • the operating spindle has at its lower end two drive wheels.
  • a first one of these drive wheels is coupled to the spindle to rotate at all times therewith and said first wheel drives the two output wheels through two pairs of intermediate wheels, the wheels of each pair being coupled together through the medium of a third unidirectional clutch so that one wheel of the pair drives the other wheel of the pair in one direction only.
  • the spindle is coupled to its second drive wheel through the medium of a fourth unidirectional clutch and said second drive wheel is, on diametrically opposite sides, in toothed engagement with the output wheels.
  • the unidirectional clutches employed are preferably sprag clutches operating between smooth coaxial cylindrical surfaces.
  • the winch drum and the sub-casing are supported for rotation on the main casing by roller bearings.
  • the upper spindle part is spring loaded upwardly so that its driving dogstend to be urged out of engagement with the corresponding driven dogs on the annular element fixed to the winch outer casing.
  • spring loaded ball catch means are provided for temporarily holding the upper part of the drive spindle either in its raised or its lowered position. In both positions the upper part of the drive spindle will be connected to drive the lower part of the drive spindle by the internally splined sleeve.
  • FIGS. 1 to 6 inclusive show the winch described in the aforementioned US. Pat. specification No. 3711065 while FIG. 7 shows the modification provided according to the present invention. More particularly with reference to the drawings:
  • FIGS. 1A and 1B are cross sectional views taken in the vertical plane passing through the centres of the two diametrically opposed output wheels, FIGS. 1A and 18 being views of the parts of the winch on the respective sides of its axis;
  • FIG. 2 is a perspective view partly cutaway illustrating the relative dispositions of the intermediate and output gear wheels
  • FIG. 5 is a diagrammatic plan view of a single unidirectional clutch
  • FIG. 6 is a detail view of the clutch shown in FIG. 5.
  • FIG. 7 is a cross sectional view illustrating a modified arrangement provided according to the present invention whereby the winch is afforded a third 1 1 ratio.
  • FIG. 1 generally represents a circular main casing member adapted to be fixed to a deck, rooftop or analogous component of a marine vessel.
  • the main casing 1 has an upper generally cylindrical turret region 2 and flared bottom region 3 housing gearing means described below.
  • the winch drum 6 is a composite member formed by an internal sleeve 6a, and an external portion 6b shaped in conventional winch drum manner.
  • FIG. 11 represents a circular sub-casing having an upper sleeve portion 11a extending through and coaxial with the turret 2. Splined on to the upper end portion of sleeve portion 11a and secured by a nut 16, is an annuabout the axis of turret 2 by roller bearings 13 and 14.
  • the abutment element 12 has in its upper region a cylindrical surface 12a and between such surface and the internal cylindrical surface of the drum sleeve 6a there is operatively located second unidirectional clutch means 20.
  • the operating spindle At its upper end the operating spindle has a socket 24 shown in F IG. 2 for receiving a correspondingly shaped end of an operating lever. Its lower end is splined to a sleeve 21b.
  • the drive gear wheel 31 is integral with sleeve 21b and hence rotates at all times with the spindle 21.
  • the wheel 31 drives the output wheels 25 and 26 through two pairs of intermediate gear assemblies, one of which is indicated generally at 33 in FIGS. 2 and 3.
  • Each intermediate gear assembly 33 comprises a large gear wheel 33a adapted to drive a smaller gear wheel 3312 through the medium of a third unidirectional clutch means 30 located within the large wheel 33a.
  • The-smaller gear wheel 33b of the intermediate gear assembly 33 is in mesh with output drive wheel 25 (or 26) and the two assemblies 33 are located diametrically opposite one another within the lower flared part 3 of the main casing l.
  • fourth unidirectional clutch means 40 in this case a pair of clutches, are operatively located to transmit drive to the wheel 32 from the spindle 21, such drive being transmitted only when the spindle 21 is rotated in the direction in which as described above, the third unidirectional clutch means within intermediate gear wheel 33a override.
  • Ball race assemblies 22 support rotational movement of drive wheel 32 relative to operating spindle 21.
  • the sub-casing 11 will be driven in only one direction. Rotation of the sub-casing 11 will, by way of second unidirectional clutch 20, be transmitted to winch drum 6, Winch drum 6 is prevented from reverse rotation relative to casing 1 by first unidirectional clutch 10. However, due to the presence of the second unidirectional clutch 20 the winch drum 6 can be rotated relative to sub-casing 11 in one direction only, for example, when manual hauling of the sheets, lifts, halyards or the like is required without resort to the mechanical advantage provided by the gearing.
  • the unidirectional clutches 10, 20, 30, 40 employed in the winch are preferably sprag clutches operating between smooth coaxial cylindrical surfaces.
  • FIG. 5 illustrates one of the intermediate gear assemblies 33 having a large gear wheel 33a arranged to rotate about a spindle 33c which is either rigidly attached to or integral with a gear wheel 33b (not shown in this Figure).
  • a unidirectional sprag clutch 30 Located between a cylindrical surface 33d of the large gear wheel 33a and the cylindrical surface of the spindle 330 is a unidirectional sprag clutch 30.
  • FIG. 6 This is shown in detail in FIG. 6 and comprises a series of identical bone shaped sprag members 60 located in windows in three concentric locating rings 61, 62 and 63, the intermediate ring 62 of which may be of spring steel.
  • the bone shaped sprag members are permitted by their locating rings to take up positions which are noticeably inclined to the radii of the assembly while when the surface 33d is rotated in the opposite direction the sprags tend towards taking up radial positions and are so shaped that they wedge between the surface 33d and the surface of spindle 33c preventing relative rotation between these surfaces.
  • the gear trains are appropriately manufactured from stainless steel and due to their opposite diametrieal dispositions there is cancellation of distortional torque effects.
  • the winch as so far described with reference to FIGS. 1 to 6 has two alternative ratios selectable upon rotating the main spindle 21 either clockwise or anticlockwise.
  • the present invention has for its particular object to provide an additional 1 1 gear ratio.
  • the drive spindle is sponding driven dogs on an annular element adapted to be fixedly attached to the winch outer casing on which the sheet or the line is adapted to be wound.
  • 171 represents a spring urging the upper spindle part 131 upwardly.
  • 151 represents a further spring acting on two balls 141 and 142 adapted to engage in detents 143 provided internally of sleeve 161.
  • upper part 131 of the drive spindle has a head 1311) in which is formed a socket indicated in dotted lines at 131C adapted to receive a correspondingly shaped end of an operating lever or winch handle not shown).
  • an enlarged flange 131d having on its lower side driving dogs l3le.
  • 200 represents an annular member adapted to be fixed to the winch casing 6, on which latter, the sheet or the like is adapted to be wound.
  • Annular member 200 has dogs 201 adapted to be engaged by the dogs 131e of the drive spindle 131 when the latter is in its lowered position. In this position rotation of upperspindle part 131 in one direction will effect rotation of the winch casing 6 provided that downward pressure is maintained upon the upper spindle part 131.
  • spring 171 will urge upper spindle part 131 upwardly with the balls 141 and 142 engaging in the upper detents 143 in sleeve 161.
  • Means may be provided, for example seals, for limiting upward movement of upper spindle portion 131 relative to the annular element 200, and means will be provided for maintaining the sleeve 161 in splined engagement with lower spindle part 121.
  • the present invention provides a three speed winch in which when the winch handle is inserted and pressed down, a l 1 ratio is obtained, while, when the winch handle is in a raised position, two alternative ratios are available, dependent upon the direction of rotation of the winch handle.
  • the invention provides a winch which is substantially silent in operation, which has low friction and which provides alternative ratios of mechanical advantage and whose longevity is guaranteed due to the balancing of the torque distortion effects which would be created in the absence of duplication of the gearing in diametrically opposed fashion. Moreover, due to such balancing the cutting of the teeth of the various gears presents minimal problems.
  • a marine winch including in combination:
  • a winch drum rotatable about the axis of said upper generally cylindrical turret of said casing
  • first unidirectional clutch means operatively located-between the drum and the turret and permitting relative rotation between the drum and the turret in one direction only;
  • a circular sub-casing within the casing and having an upper sleeve portion extending through and coaxial with said turret, said sub-casing being rotatable about the axis of the turret;
  • second unidirectional clutch means operatively located between the sleeve and the drum, said second unidirectional clutch permitting relative rotation between said sleeve and said drum only in a direction opposite to said direction;
  • said circular sub-casing having a circular flared lower part and a toothed ring formed within said flared lower part;
  • an operating spindle located axially within the turret and rotatable relative thereto;
  • reduction gearing operatively connected to transmit drive from said operating spindle to said flared circular lower part of said rotatable sub-casing, said gearing including two output gear wheels engaging diametrically opposite regions of said toothed ring formed within said flared circular lower portion of said rotatable sub-casing, the said reduction gearing being arranged to drive the output gear wheels in two ratios selectable on rotating the operating spindle in opposite directions;
  • the operating spindle has a lower part arranged to drive the reduction gearing, such lower part being separate from an upper part of the drive spindle, the upper and lower parts of the spindle each being provided with externally splined portions, both said splinedportions being surrounded by an internally splined sleeve fixed to the lower spindle part and adapted to transmit drive from the upper part to the lower part, and wherein the upper part is movable axially relative to the lower end part of the spindle, and of said sleeve, and is provided with driving dogs which, upon axial movement of the upper part of the spin- 8 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Gear Transmission (AREA)
US00337458A 1972-03-07 1973-03-02 Marine winch Expired - Lifetime US3809368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1056372A GB1423139A (en) 1972-03-07 1972-03-07 Marine winch

Publications (1)

Publication Number Publication Date
US3809368A true US3809368A (en) 1974-05-07

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US00337458A Expired - Lifetime US3809368A (en) 1972-03-07 1973-03-02 Marine winch

Country Status (6)

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US (1) US3809368A (hu)
AU (1) AU456935B2 (hu)
DE (1) DE2311045A1 (hu)
FR (1) FR2175129A1 (hu)
GB (1) GB1423139A (hu)
NL (1) NL7303072A (hu)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927580A (en) * 1971-07-02 1975-12-23 Lewmar Marine Ltd Disengaging clutch systems for a three-speed winch
US3962935A (en) * 1973-11-12 1976-06-15 Barwin Pty. Limited Variable speed winch
US3981208A (en) * 1974-05-29 1976-09-21 Enkes N.V. Sheet winch
US3985340A (en) * 1975-04-15 1976-10-12 Barient Company Self tailing winch
US4111397A (en) * 1975-12-19 1978-09-05 Costruzioni Barbarossa Three-speed winch particularly for nautical use
US4240309A (en) * 1977-03-07 1980-12-23 David Tyler Ratchet devices
US4291864A (en) * 1978-07-26 1981-09-29 Reynolds Darcie F Drum winches
US4333362A (en) * 1979-05-31 1982-06-08 Asahi Malleble Iron Co., Ltd. Speed-shift apparatus for sheet winch
US4898364A (en) * 1982-10-08 1990-02-06 Lewmar Marine Limited Two-speed winch
WO1991014646A1 (en) * 1990-03-21 1991-10-03 Imi Barient, Inc. An automatic load responsive winch
US5368279A (en) * 1992-08-10 1994-11-29 Imi Barient, Inc. Automatic load responsive winch
US20110030606A1 (en) * 2007-06-07 2011-02-10 Mann Samuel J Mechanism for alternative power or manual operation of a yacht winch
US20130313495A1 (en) * 2010-10-11 2013-11-28 Pontos Capstan comprising means for assessing the tension of a line wound around it and means for the automatic selection of at least one speed as a function of said tension.
CN104746191A (zh) * 2015-04-03 2015-07-01 华卫国 一种纱管装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30881E (en) 1977-07-27 1982-03-16 Lewmar Marine Limited Winch
GB2001596B (en) 1977-07-27 1982-01-20 Lewmar Marine Ltd Winch
DE3428876A1 (de) * 1984-08-04 1986-02-13 Rotzler GmbH + Co Spezialfabrik für Seilwinden und Hebezeuge, 7853 Steinen Durchlaufwinde
WO1988006565A1 (en) * 1987-03-06 1988-09-07 Barlow Marine Limited Improvements in or relating to winches
CA1300590C (en) * 1987-10-22 1992-05-12 Rudolf R. Castens Winch
FR2624088A1 (fr) * 1987-12-08 1989-06-09 Dugast Marcel Reducteur a engrenage epicycloidal auxiliaire destine a reduire les efforts de manoeuvre d'un cabestan de voilier
DE102012100713B4 (de) * 2012-01-30 2017-08-31 Hubert Kowalewski Abseilvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536299A (en) * 1968-05-17 1970-10-27 Robert A Mccloud Winch mechanism
US3581854A (en) * 1968-07-24 1971-06-01 Kreske Walter J Torque and backstop device for winches
US3621730A (en) * 1969-12-22 1971-11-23 Gen Electric Washing machine with dual speed cycle control means
US3711065A (en) * 1970-02-09 1973-01-16 C Lawrence Marine winch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536299A (en) * 1968-05-17 1970-10-27 Robert A Mccloud Winch mechanism
US3581854A (en) * 1968-07-24 1971-06-01 Kreske Walter J Torque and backstop device for winches
US3621730A (en) * 1969-12-22 1971-11-23 Gen Electric Washing machine with dual speed cycle control means
US3711065A (en) * 1970-02-09 1973-01-16 C Lawrence Marine winch

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927580A (en) * 1971-07-02 1975-12-23 Lewmar Marine Ltd Disengaging clutch systems for a three-speed winch
US3962935A (en) * 1973-11-12 1976-06-15 Barwin Pty. Limited Variable speed winch
USRE30423E (en) * 1973-11-12 1980-10-28 Barlow Marine Limited Variable speed winch
US3981208A (en) * 1974-05-29 1976-09-21 Enkes N.V. Sheet winch
US3985340A (en) * 1975-04-15 1976-10-12 Barient Company Self tailing winch
US4111397A (en) * 1975-12-19 1978-09-05 Costruzioni Barbarossa Three-speed winch particularly for nautical use
US4240309A (en) * 1977-03-07 1980-12-23 David Tyler Ratchet devices
US4291864A (en) * 1978-07-26 1981-09-29 Reynolds Darcie F Drum winches
US4333362A (en) * 1979-05-31 1982-06-08 Asahi Malleble Iron Co., Ltd. Speed-shift apparatus for sheet winch
US4898364A (en) * 1982-10-08 1990-02-06 Lewmar Marine Limited Two-speed winch
WO1991014646A1 (en) * 1990-03-21 1991-10-03 Imi Barient, Inc. An automatic load responsive winch
US5368279A (en) * 1992-08-10 1994-11-29 Imi Barient, Inc. Automatic load responsive winch
US20110030606A1 (en) * 2007-06-07 2011-02-10 Mann Samuel J Mechanism for alternative power or manual operation of a yacht winch
US8066261B2 (en) * 2007-06-07 2011-11-29 Mann Samuel J Mechanism for alternative power or manual operation of a yacht winch
US20130313495A1 (en) * 2010-10-11 2013-11-28 Pontos Capstan comprising means for assessing the tension of a line wound around it and means for the automatic selection of at least one speed as a function of said tension.
CN104746191A (zh) * 2015-04-03 2015-07-01 华卫国 一种纱管装置

Also Published As

Publication number Publication date
NL7303072A (hu) 1973-09-11
DE2311045A1 (de) 1973-09-13
AU5299873A (en) 1974-09-12
AU456935B2 (en) 1975-01-16
GB1423139A (en) 1976-01-28
FR2175129A1 (hu) 1973-10-19

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