US3776519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable handling apparatus
Assignee: FAIREY WINCHES Ltd
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Filing: 1972-01-11
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Granted: 1973-12-04
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Expires: 1992-01-11
Abstract
Abstract The winch includes two spaced, parallel, circumferentiallygrooved driven drums, a rotary cable-driving member defining an annular groove, and rollers, gripping elements or other means for retaining a cable in the groove. The drums and driving member are rotated from a source of rotary power. During drawing-in, the cable passes through a guide, around successive drums in successive grooves thereof, around part of the annular groove of the driving member, and then through a guide conduit into a storage space. The cable is under tension as it passes from the final drum groove to the annular groove defined by the driving member.
Inventors
- 👤 W Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:45
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/36; B65H75/362; B65H75/364; B65H51/00; B65H51/02; B65H51/04; B65H51/06; B66; B66D; B66D1/00; B66D1/60; B66D1/74; B66D1/7405; B66D1/741
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
265 words
A cable winch comprising: a. cable guide means; b. two spaced, parallel, circumferentially groOved driven drums; c. a rotary cable driving member at one end of one drum defining an annular groove coaxial with said one drum, the member being mounted to rotate with said one drum; d. means for retaining the cable in said groove over a part of its circumference; e. a cable storage space; f. a cable guide conduit extending from said driving member to said cable storage space for conducting cable to and from said space when the winch is drawing-in and paying-out cable respectively; g. a source of rotary power; h. means for rotating said drums together with said driving member from said source so that, upon drawing-in of the cable, the cable will pass through said cable guide means, around successive drums in successive grooves thereof, around said part of the groove defined by the driving member, the cable being under tension as it passes from the final drum groove to the groove defined by the driving member, and then through said guide conduit into said storage space; and i. said driving member comprising a shaft extending rigidly from said one end of said drum, an axially movable element mounted to rotate with the shaft, a further element mounted to rotate with the shaft, and means for preventing relative axial movement of the two elements away from one another, said axially movable element having an annular surface cooperating with a further annular surface on said further element to define said annular groove which is coaxial with said one drum.
Claim 2
Dependent Claim
265 words
A cable winch comprising: a. cable guide means; b. two spaced, parallel, circumferentially groOved driven drums; c. a rotary cable driving member at one end of one drum defining an annular groove coaxial with said one drum, the member being mounted to rotate with said one drum; d. means for retaining the cable in said groove over a part of its circumference; e. a cable storage space; f. a cable guide conduit extending from said driving member to said cable storage space for conducting cable to and from said space when the winch is drawing-in and paying-out cable respectively; g. a source of rotary power; h. means for rotating said drums together with said driving member from said source so that, upon drawing-in of the cable, the cable will pass through said cable guide means, around successive drums in successive grooves thereof, around said part of the groove defined by the driving member, the cable being under tension as it passes from the final drum groove to the groove defined by the driving member, and then through said guide conduit into said storage space; and i. said driving member comprising a shaft extending rigidly from said one end of said drum, an axially movable element mounted to rotate with the shaft, a further element mounted to rotate with the shaft, and means for preventing relative axial movement of the two elements away from one another, said axially movable element having an annular surface cooperating with a further annular surface on said further element to define said annular groove which is coaxial with said one drum.
Claim 3
Dependent Claim
90 words
A cable winch as claimed in claim 1, wherein said means for retaining the cable in said groove of said driving member comprise movable cable gripping elements on said member, means on said member normally urging said gripping elements into operative positions wherein the cable is tightly gripped in said groove, and means for releasing the gripping elements as said elements pass two stationary stations upon rotation of the driving member to permit feeding of the cable onto and withdrawal of the cable from the driving member at said stations.
Claim 4
Dependent Claim
74 words
A cable winch as claimed in claim 2, wherein each end of the cable gripping element is spring-biased into its operative cable-gripping position, further comprising a cam-follower roller on each gripping element, and suitably shaped cams provided at the two said stations at which release of the gripping elements is required, said cams being adapted to engage said rollers and to move successive gripping elements from their operating positions as the driving member rotates.
Claim 5
Dependent Claim
24 words
A cable winch as claimed in claim 1, further comprising a freely rotatable storage container, said guide conduit being directed into said storage container.
Claim 6
Dependent Claim
20 words
A cable winch as claimed in claim 4, wherein said storage container is freely rotatable about a substantially vertical axis.
Claim 7
Dependent Claim
22 words
A cable winch as claimed in claim 4, wherein said guide conduit leads into said storage space in a substantially tangential direction.
Claim 8
Dependent Claim
84 words
A cable winch as claimed in claim 1, wherein said annular groove widens radially outwardly, and said driving member further comprises spring means for biasing said two elements towards one another so as to force said last turn of cable radially outwardly, the means for retaining the cable in said groove over part of its circumference being arranged so as to retain the cable in said groove at a radius such that the cable entering said groove from the other drum is under tension.
Claim 9
Dependent Claim
17 words
A cable winch as claimed in claim 7, further comprising means for rendering said biasing means inoperative.
Claim 10
Dependent Claim
23 words
A cable winch as claimed in claim 7, wherein said retaining means comprise at least one roller adjacent the circumference of the groove.
Claim 11
Dependent Claim
27 words
A cable winch as claimed in claim 4, wherein said annular groove has a cylindrical base whose diameter is substantially equal to that of the drum grooves.
Claim 12
Dependent Claim
51 words
A cable winch as claimed in claim 7, further comprising a second driving member at the end of one of the drums opposite to the first-mentioNed driving member, and means for rendering the biasing means of one driving member inoperative while the biasing means of the other driving member are operative.
Claim 13
Dependent Claim
19 words
A cable winch as claimed in claim 1, wherein said members are at opposite ends of the same drum.
Claim 14
Dependent Claim
20 words
A cable winch as claimed in claim 7, wherein said further element is axially fixed with respect to said drum.
Claim 15
Dependent Claim
21 words
A cable winch as claimed in claim 13, wherein the biasing means act between said axially movable member and a stop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |