GB313220A - Improvements in or relating to manually operable luffing mechanism for use in connection with davits and the like - Google Patents
Improvements in or relating to manually operable luffing mechanism for use in connection with davits and the likeInfo
- Publication number
- GB313220A GB313220A GB7723/28A GB772328A GB313220A GB 313220 A GB313220 A GB 313220A GB 7723/28 A GB7723/28 A GB 7723/28A GB 772328 A GB772328 A GB 772328A GB 313220 A GB313220 A GB 313220A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- sleeve
- handle
- transmitted
- davits
- 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
- B63B23/04—Davits, i.e. devices having arms for lowering boats by cables or the like with arms pivoting on substantially horizontal axes, e.g. gravity type
- B63B23/06—Davits, i.e. devices having arms for lowering boats by cables or the like with arms pivoting on substantially horizontal axes, e.g. gravity type with actual pivots
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
313,220. Welin, A. March 13, 1928. Davits.-In a luffing davit the velocity ratio of the manually operable luffing mechanism is arranged to be varied independently of the winding-handle. The davit 29 is luffed by the threaded rod 27 engaging with a nut carried by the tube 26, which is revolved by the crank attached to the shaft 1. A sleeve 3 is keyed to this shaft so as to be capable of independent relative longitudinal movement controlled by the pin 11 engaging with the groove 10, but rotary movements of the shaft 1 are transmitted to the sleeve. When the handle 15 is placed in the position shown in Fig. 3 the sleeve slides from left to right, the teeth 5 on the sleeve engage similar teeth 7 on the pinion 9, and thus motion from the shaft 1 is transmitted by the wheel train 9, 16, 18, 19 and 20 to the shaft 21 which is directly attached to the tube 26. Similarly when the handle 15 is in the reverse position motion from the shaft 1 is transmitted by the train 8, 17, 19 and 20, and since the pinions 9 and 17 are of different diameters, two velocity ratios are obtained. In a modification one pinion is directly attached to the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7723/28A GB313220A (en) | 1928-03-13 | 1928-03-13 | Improvements in or relating to manually operable luffing mechanism for use in connection with davits and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7723/28A GB313220A (en) | 1928-03-13 | 1928-03-13 | Improvements in or relating to manually operable luffing mechanism for use in connection with davits and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB313220A true GB313220A (en) | 1929-06-13 |
Family
ID=9838520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7723/28A Expired GB313220A (en) | 1928-03-13 | 1928-03-13 | Improvements in or relating to manually operable luffing mechanism for use in connection with davits and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB313220A (en) |
-
1928
- 1928-03-13 GB GB7723/28A patent/GB313220A/en not_active Expired
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