EP0056909A2 - Winde und Zusatzeinrichtung dafür - Google Patents

Winde und Zusatzeinrichtung dafür Download PDF

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Publication number
EP0056909A2
EP0056909A2 EP81306158A EP81306158A EP0056909A2 EP 0056909 A2 EP0056909 A2 EP 0056909A2 EP 81306158 A EP81306158 A EP 81306158A EP 81306158 A EP81306158 A EP 81306158A EP 0056909 A2 EP0056909 A2 EP 0056909A2
Authority
EP
European Patent Office
Prior art keywords
winch
rope
drum
attachment
shaped member
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.)
Withdrawn
Application number
EP81306158A
Other languages
English (en)
French (fr)
Other versions
EP0056909A3 (de
Inventor
Richard David John Huggett
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.)
Lewmar Marine Ltd
Original Assignee
Lewmar Marine 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 Lewmar Marine Ltd filed Critical Lewmar Marine Ltd
Publication of EP0056909A2 publication Critical patent/EP0056909A2/de
Publication of EP0056909A3 publication Critical patent/EP0056909A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B66D1/7463—Accessories
    • 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
    • B66D1/7494—Self-tailing capstans

Definitions

  • This invention relates to winches of the hand-powered type as used for example in yachts and sailing vessels.
  • the most convenient form of such an attachment is that of an axially elongate C-Clip (like a bicycle clip in end view).
  • the elongate surface of the attachment may be part cylindrical or frusto-conically tapered.
  • the clip may be attached to the yacht or other vessel by a lanyard to prevent its loss when not riding on the winch. This lanyard may also be used to prevent rotation of the'clip on the winch drum when the clip is in use.
  • the invention includes the provision of such a removable attachment for the purpose of rendering a hand-powered winch self-tailing.
  • a lead run 4 of the rope will be under tension between the drum 2 and the load attached to the rope.
  • means removably attached to the winch so as to ride on its drum and exert inward pressure on the coil 3.
  • this attachment is a removable clip 5 of which the end view ( Figure 2) resembles that of a bicycle clip.
  • the clip 5 has a slightly extended C-shape 6 with outwardly flared ends 7.
  • the width of the clip is somewhat less than the length of the drum 2 between its end flanges.
  • Midway around the length of the clip there is an indentation 8 bridged on the outside by a lug 9.
  • a string or chain 10 runs from the lug to an anchor point on the vessel. It stops the clip 5 from getting lost or falling overboard when it is removed from the winch.
  • This string or chain 10 may also be secured to a fixed point adjacent the winch and tension in the string or chain 10 prevents rotation of the clip 5.
  • One of the ends 7 destined to be next to the run 4 is extended into a projection 11 which receives and bears against the rope of the run 4. This is to prevent free rotation of the clip 5 when fitted on the winch (the direction of rotation of the drum is clockwise as seen in Figure 2).
  • the flared ends 7 assist this pressing on, and open to pass over the diameter of the coil.
  • the clip is held on the coil by these ends and the resilience of the clip, and applies radial pressure inwardly along three lines; lines 12, 13 adjacent ends 7 and line 14 due to the indentation 8. This pressure renders the winch effectively self-tailing.
  • the clip can be kept on the winch once the coil 3 has consolidated under load or can be removed.
  • the second embodiment is shown in Figures 3 and 4.
  • the clip 5' is generally similar to that shown in Figures 1 and 2 except that it is frusto-conical. In this way the clip can be made to fit a tapered winch drum 2'. This arrangement is preferred. It is not necessary that the angle of taper of the clip 5' (if any) corresponds exactly to that of the drum 2'. There is some advantage in having a slightly smaller angle of taper so that the pressure applied to the turns of the rope (3') between the clip 5' and the drum 2' is higher in the upper region of the drum 2' to increase the gripping of the rope 3' between the clip 5' and the drum 2'.
  • a clip may be provided with a negative taper, i.e. decreasing upwardly so that this effect of increased gripping may be achieved with a parallel sided drum.
  • the clip may be made of a suitable plastics material, e.g. Delrin. To reinforce this material, and also to increase the resilience of the clip, glass fibres may be incorporated into the clip. Alternatively, the clip may be made of metal.
  • a suitable plastics material e.g. Delrin.
  • glass fibres may be incorporated into the clip.
  • the clip may be made of metal.
  • Gripping can be increased by having the clip of a diameter such that it grips the turns of the rope uniformly around the drum (rather than at a series of points as in Figure 2) thus increasing the force pressing the rope onto the drum.
  • a number of arrangements may be used to reduce the friction between the rope and clip relative to the friction between rope and drum.
  • a series of projections or bumps similar to indentation 8 in Figure 2 may be provided around the inner surface of the clip, these projections acting as a series of pressure pads around the clip.
  • rollers may be provided at spaced locations around the clip but such an arrangement is complicated and expensive.
  • the inner surface of the clip may be coated with a low friction material, or even the entire clip made of the low friction material.
  • PTFE is one suitable material'and a coating of this may be formed by PTFE tape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Pulleys (AREA)
EP81306158A 1981-01-16 1981-12-30 Winde und Zusatzeinrichtung dafür Withdrawn EP0056909A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8101387 1981-01-16
GB8101387 1981-01-16

Publications (2)

Publication Number Publication Date
EP0056909A2 true EP0056909A2 (de) 1982-08-04
EP0056909A3 EP0056909A3 (de) 1982-10-06

Family

ID=10519029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81306158A Withdrawn EP0056909A3 (de) 1981-01-16 1981-12-30 Winde und Zusatzeinrichtung dafür

Country Status (1)

Country Link
EP (1) EP0056909A3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819912A (en) * 1987-12-16 1989-04-11 Greenlee Textron Inc. Ramped guide for capstan
US4842251A (en) * 1987-08-28 1989-06-27 Porter Glenn A Pulley with cord retention member
FR2637278A1 (fr) * 1988-10-04 1990-04-06 Grospiron Christian Winch cabestan a guide d'ecoute et tirage autonome
PT106802A (pt) * 2013-02-22 2014-08-22 Vhn Engenharia Unipessoal Lda Guincho de tambor troncónico para elevação de cargas com altura de aproximação de gancho de elevação reduzida
US9963327B2 (en) 2015-05-18 2018-05-08 Flexcrane, Inc. Frustoconical drum winch for lifting loads with hook reduced approximation lifting height

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1965907U (de) * 1965-07-15 1967-08-10 Bergens Mek Verksted Strammvorrichtung fuer winden oder ankerspille.
US3841606A (en) * 1973-10-26 1974-10-15 M Declercq Self-tailing winch
US3968953A (en) * 1975-01-27 1976-07-13 Barient Company Self-tailing winch
GB1599320A (en) * 1977-11-12 1981-09-30 Fitch C K Self-maintaining winches
FR2414470A1 (fr) * 1978-01-13 1979-08-10 Mittler Michel Debiteur d'ecoute pour treuil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842251A (en) * 1987-08-28 1989-06-27 Porter Glenn A Pulley with cord retention member
US4819912A (en) * 1987-12-16 1989-04-11 Greenlee Textron Inc. Ramped guide for capstan
FR2637278A1 (fr) * 1988-10-04 1990-04-06 Grospiron Christian Winch cabestan a guide d'ecoute et tirage autonome
PT106802A (pt) * 2013-02-22 2014-08-22 Vhn Engenharia Unipessoal Lda Guincho de tambor troncónico para elevação de cargas com altura de aproximação de gancho de elevação reduzida
PT106802B (pt) * 2013-02-22 2014-11-25 Vhn Engenharia Unipessoal Lda Guincho de tambor troncónico para elevação de cargas com altura de aproximação de gancho de elevação reduzida
US9963327B2 (en) 2015-05-18 2018-05-08 Flexcrane, Inc. Frustoconical drum winch for lifting loads with hook reduced approximation lifting height

Also Published As

Publication number Publication date
EP0056909A3 (de) 1982-10-06

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB IT NL SE

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): FR GB IT NL SE

17P Request for examination filed

Effective date: 19821230

R17P Request for examination filed (corrected)

Effective date: 19821111

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840619

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HUGGETT, RICHARD DAVID JOHN