GB181180A - Improvements in or relating to winches and the like hoisting apparatus - Google Patents
Improvements in or relating to winches and the like hoisting apparatusInfo
- Publication number
- GB181180A GB181180A GB1050721A GB1050721A GB181180A GB 181180 A GB181180 A GB 181180A GB 1050721 A GB1050721 A GB 1050721A GB 1050721 A GB1050721 A GB 1050721A GB 181180 A GB181180 A GB 181180A
- Authority
- GB
- United Kingdom
- Prior art keywords
- driving
- coil
- shaft
- drum
- pawls
- 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
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
181,180. Peters & Co., Ltd., G. D., and MacFarlane, G. T. April 9, 1921. Driving-gear for winding and paying-out apparatus; brakes. - The pawl and ratchet braking- mechanism described in Specification 114,650 is fitted to one end of the coil of a coil clutch mounted on the driving-shaft of a winch or the like, so that if the load under gravity lowering exceeds a predetermined speed, the pawl mechanism is actuated automatically to cause the coil to connect the drum to the driving-shaft for a positive downward drive. In the construction shown in Figs. 1 and 2, the driving-shaft 2 rotates constantly in the same direction and drives the drum 1 through epicyclic gearing (not shown). The brake coil 5 is secured at one end 6 to the drum and surrounds a disc 4 fixed on the driving- shaft and having a ratchet-wheel 12 fixed to its outer face. The free end of the coil carries pawls 11 connected by links to blocks 15, which slide in a circular recess in the face of the ratchet-wheel into which they are pressed by plate springs 17 on the links. During hoisting, the drum, coil, and pawls turn clockwise as seen in Fig. 2, while the driving-shaft turns counterclockwise. The effect of this is to tend to bring the links into a radial position, thus lifting the pawls clear of the ratchet-wheel to prevent clattering. During gravity lowering the drum, pawls, and driving- shaft turn counterclockwise. When the drum overruns the driving-shaft, the pawls overrun the ratchet-wheel and cause the inner ends of the links 17 to lag sufficiently to: bring the pawls into engagement with the wheel and thus tighten the coil to connect the drum positively to the driving- shaft. To provide for a positive downward drive of the unloaded rope or of a light load insufficient to run down by gravity, a second coil may be used operated independently by lever-mechanism to grip the driving-shaft at will. In some instances one or two convolutions of the main coil may be utilized as the subsidiary coil.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1050721A GB181180A (en) | 1921-04-09 | 1921-04-09 | Improvements in or relating to winches and the like hoisting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1050721A GB181180A (en) | 1921-04-09 | 1921-04-09 | Improvements in or relating to winches and the like hoisting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB181180A true GB181180A (en) | 1922-06-15 |
Family
ID=9969094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1050721A Expired GB181180A (en) | 1921-04-09 | 1921-04-09 | Improvements in or relating to winches and the like hoisting apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB181180A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110937537A (en) * | 2019-12-25 | 2020-03-31 | 郭瑞光 | Winch traction wheel disc for ocean ship |
CN111017777A (en) * | 2020-01-21 | 2020-04-17 | 夏昇涛 | Fire-fighting pipeline hoist device |
-
1921
- 1921-04-09 GB GB1050721A patent/GB181180A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110937537A (en) * | 2019-12-25 | 2020-03-31 | 郭瑞光 | Winch traction wheel disc for ocean ship |
CN111017777A (en) * | 2020-01-21 | 2020-04-17 | 夏昇涛 | Fire-fighting pipeline hoist device |
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