GB504329A - Improvements in winches and particularly in those used for launching and raising lifeboats for ships - Google Patents
Improvements in winches and particularly in those used for launching and raising lifeboats for shipsInfo
- Publication number
- GB504329A GB504329A GB19732/38A GB1973238A GB504329A GB 504329 A GB504329 A GB 504329A GB 19732/38 A GB19732/38 A GB 19732/38A GB 1973238 A GB1973238 A GB 1973238A GB 504329 A GB504329 A GB 504329A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drums
- shaft
- pinions
- brake
- sectors
- 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
504,329. Winches. SOC. SALVARE. July 4, 1938, No. 19732. Convention date, July 6, 1937. [Class 78 (v)] Two helically - grooved winding-drums 2 are mounted freely on two parallel fixed shafts 3, and are geared together by pinions 4. Separate cables 30 are wound on the drums 2, and may be attached to the two ends of a boat for even lowering and raising, the winch being located in the boat. Power is applied through a handle on a shaft 12 geared by way of pinions 11, 10, 8, 7, 5 to one of the pinions 4. On the shaft 12 are arranged two brakes, one normally in action to prevent any movement of the winch drums 2, and the other coming into action only when the first brake is released and being of the centrifugal type to allow of a regulated unwinding of the drums. The permanent brake comprises jaws 18, Fig. 5, pivoted together at 21 and pressed over a cylinder 16 by springs 20. The cylinder 16 carries pawls 15 which engage a ratchet wheel 14 keyed to the shaft 12 and pinion 11. Integral with the drum 16 is a sleeve 28 extending radially from which are pins 27 on which ride brake sectors 26 bearing through pads 19 on the jaws 18. Thus when the pressure on the cylinder 16, held to the shaft 12 by the pawls 15, is released by turning a lever 24 fitted with a jaw-separating cam 22, the pull on the cables 30 unwinds the drums 2 and the sectors 26 on the rapidly rotating shaft 12 fly out to apply a steady braking action, which depends on the mass of the sectors and the speed of rotation. The lever 24 is fitted with a removable extension 25 protruding through the gear casing 1, and this extension may be applied to another lever which operates a dog clutch between the pinions 7 and 5 in order to free the drums completely from the brake. Each cable 30 is provided with a ball end 31, Fig. 7, for ready attachment to the drum 2, the ball sliding in a slot 32 formed in the drum cheek. Specification 404,132, [Group XXXIII], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR504329X | 1937-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB504329A true GB504329A (en) | 1939-04-24 |
Family
ID=8907722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19732/38A Expired GB504329A (en) | 1937-07-06 | 1938-07-04 | Improvements in winches and particularly in those used for launching and raising lifeboats for ships |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB504329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2164910A (en) * | 1984-10-02 | 1986-04-03 | Hiroo Kondo | Device for mooring airships |
-
1938
- 1938-07-04 GB GB19732/38A patent/GB504329A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2164910A (en) * | 1984-10-02 | 1986-04-03 | Hiroo Kondo | Device for mooring airships |
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