GB499477A - Improvements in and relating to winches - Google Patents
Improvements in and relating to winchesInfo
- Publication number
- GB499477A GB499477A GB25888/38A GB2588838A GB499477A GB 499477 A GB499477 A GB 499477A GB 25888/38 A GB25888/38 A GB 25888/38A GB 2588838 A GB2588838 A GB 2588838A GB 499477 A GB499477 A GB 499477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- drums
- shaft
- clutch
- loads
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B23/00—Equipment for handling lifeboats or the like
- B63B23/40—Use of lowering or hoisting gear
- B63B23/48—Use of lowering or hoisting gear using winches for boat handling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
499,477. Winches. SCHAT, A.P. Sept. 5, 1938, No. 25888. Convention date, Sept. 3, 1937. [Class 78(v)] In a winch provided with a plurality of drums, or sets of drums, for handling a plurality of independent loads, the arrangement is such that all loads cannot be raised simultaneously but can be lowered simultaneously, and also that while one is being hoisted the others can be lowered or held. The Figure shows a winch for two loads which respectively are attached by cables to a pair of drums 5, 6 and 7, 8. The drums 5, 6 are driven in the same direction by a pinion 12 gearing with wheels 10, 11 on the drums, the pinion 12, together with a toothed wheel 17 being fixed on a shaft fitted with a centrifugal brake 14 turning in a casing 15 fitted with cooling ribs 16. A gear wheel 18 connects the wheel 17 to a pinion 19 loosely mounted on a shaft 20, but furnished with the male member of a clutch whereby it may be held to the shaft 20 by manipulation of a wheel 31. A reversible motor 4 drives a toothed wheel 34 loose on the shaft 20 but gripping the shaft, when rotated in one direction, through the medium of a helical spring clutch 37 riding with slight clamping action on a hub of the wheel 34, and attached at one end to a disc 38 fixed to the shaft 20. A similar arrangement is provided for the drums 7, 8, the corresponding helical spring clutch 48 being disposed, however so as to be inactive when the direction of rotation of the motor 4 is such as to cause clutch 37 to grip, and vice versa. In operation, both loads may be simultaneously lowered by manipulating both wheels 31 so as to free the pinions 19. If the motor 4 is turning in the direction which causes wheel 34 to grip its shaft 20, the drums 5, 6 may be either stopped or turned back to raise their load, by suitable adjustment of the corresponding wheel 31. Reversal of the motor 4 will allow similarly of the drums 7, 8 raising their load. In order to hold the loads when the motor 4 is inoperative, a helical spring clutch 41 is provided in each case between the disc 38 and the frame 9 thus holding the shaft 20 against reverse movement when the clutch is engaged by wheel 31 to arrest the pinion 19. In a modification the spring clutch 37 is replaced by a screw clutch, and the wheel 31 controls a multiplate clutch one part of which carries the centrifugal brake.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE499477X | 1937-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499477A true GB499477A (en) | 1939-01-24 |
Family
ID=6545475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25888/38A Expired GB499477A (en) | 1937-09-03 | 1938-09-05 | Improvements in and relating to winches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB499477A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2832779A (en) * | 1955-03-30 | 1958-04-29 | Basf Ag | Production of 4-aryl-2.6-dihydroxy-1.3.5-triazines |
GB2131764A (en) * | 1982-12-06 | 1984-06-27 | Hydraulik Brattvaag As | Hoisting means |
-
1938
- 1938-09-05 GB GB25888/38A patent/GB499477A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2832779A (en) * | 1955-03-30 | 1958-04-29 | Basf Ag | Production of 4-aryl-2.6-dihydroxy-1.3.5-triazines |
GB2131764A (en) * | 1982-12-06 | 1984-06-27 | Hydraulik Brattvaag As | Hoisting means |
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