GB174103A - Improvements in and relating to means for lowering a load by pulley tackle - Google Patents
Improvements in and relating to means for lowering a load by pulley tackleInfo
- Publication number
- GB174103A GB174103A GB2225420A GB2225420A GB174103A GB 174103 A GB174103 A GB 174103A GB 2225420 A GB2225420 A GB 2225420A GB 2225420 A GB2225420 A GB 2225420A GB 174103 A GB174103 A GB 174103A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- brake
- rope
- pulley
- lever
- 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 SHIPPINGÂ
- B63B23/00—Equipment for handling lifeboats or the like
- B63B23/02—Davits, i.e. devices having arms for lowering boats by cables or the like
- B63B23/18—Davits, i.e. devices having arms for lowering boats by cables or the like with arms pivoting on substantially vertical axes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
174,103. Schat, A. P. July 26, 1920. Boat raising and lowering gear. -Consists in pulley-tackle for lowering loads such as ships' beats, in which the hauling part of the rope is wound upon a drum provided with automatic braking means and the pulley-blocks are provided with means for frictionally braking the rope. The winding drum brake may be loaded by means of a weighted lever, spring or the like or, as shown, the brake may be applied by the load. The boat 1 is suspended from the davit 2 by pulley-tackle of the kind described in Specification 16'7,360 and comprising upper and lower blocks, the lower block a having a sliding spreading-bar b arranged between the bights of the hauling rope 3 and the fixed rope 6. The bar b is hinged to a brake lever e carrying a brakeblock g adapted to act on the pulley or rope. The arrangement is such that the difference in tension of the ropes produced by the load releases the brake when hauling in and applies it when pa.ying out, and in the latter case. in conjunction with the brake on the drum, holds the load suspended. The fixed rope 6 is connected to a lever 7 carrying a brake block acting on the drum 4 and is adjusted to exert the required braking force, which allows the load to be lowered by the release of the hand lever e by an operator in the boat but sustains the load when the hand lever is actuated bv the difference in tension in the ropes. Specifications 149,175, 154,470, [Class 78 (v), Winding and paying-out apparatus, &c.], and 168,970 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2225420A GB174103A (en) | 1920-07-26 | 1920-07-26 | Improvements in and relating to means for lowering a load by pulley tackle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2225420A GB174103A (en) | 1920-07-26 | 1920-07-26 | Improvements in and relating to means for lowering a load by pulley tackle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB174103A true GB174103A (en) | 1922-01-26 |
Family
ID=10176383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2225420A Expired GB174103A (en) | 1920-07-26 | 1920-07-26 | Improvements in and relating to means for lowering a load by pulley tackle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB174103A (en) |
-
1920
- 1920-07-26 GB GB2225420A patent/GB174103A/en not_active Expired
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