GB952675A - Improvements in or relating to level-luffing derricks - Google Patents
Improvements in or relating to level-luffing derricksInfo
- Publication number
- GB952675A GB952675A GB4374361A GB4374361A GB952675A GB 952675 A GB952675 A GB 952675A GB 4374361 A GB4374361 A GB 4374361A GB 4374361 A GB4374361 A GB 4374361A GB 952675 A GB952675 A GB 952675A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulleys
- jib
- luffing
- level
- bracket
- 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
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/04—Arrangement of ship-based loading or unloading equipment for cargo or passengers of derricks, i.e. employing ships' masts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
- B66C23/08—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
- B66C23/10—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Jib Cranes (AREA)
Abstract
952,675. Level-luffing ships' derricks. C. BARTOLI. Dec. 6, 1961 [Dec. 6, 1960], No. 43743/61. Heading B8B. Level-luffing is achieved by passing both the hoisting rope 18, Fig. 1, and the topping lifts 23 of a derrick round pulleys 14 which are mounted so as to be vertically movable. As described the pulleys 14, 14<SP>1</SP>, 1411, Fig. 2, are mounted on the piston rod 13 of an hydraulic ram 12. The hoisting rope 18 passes from a winch 17 round pulleys 22, 14, 19 and 20 to a hook 21. The topping lifts 23, 23<SP>1</SP> pass from a bracket 24 round fixed pulleys 16, 16<SP>111</SP>, movable pulleys 14<SP>1</SP>, 1411 and fixed pulleys 16<SP>1</SP>, 16<SP>11</SP> to an attachment 25 on the jib. Luffing is effected by the ram 12, and an electrically or hydraulically driven toothed member attached to the jib engages a fixed toothed bracket 7, Fig. 1, to slew the jib. To stow the jib the ropes 23, 23<SP>1</SP> are disconnected from the bracket 24 and the jib lowered, e.g. by a capstan, on to a support on the deck.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2098060 | 1960-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB952675A true GB952675A (en) | 1964-03-18 |
Family
ID=11174928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4374361A Expired GB952675A (en) | 1960-12-06 | 1961-12-06 | Improvements in or relating to level-luffing derricks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB952675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1242466B (en) * | 1964-04-09 | 1967-06-15 | Friedrich Laudan | Swivel device for loading booms of ships |
-
1961
- 1961-12-06 GB GB4374361A patent/GB952675A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1242466B (en) * | 1964-04-09 | 1967-06-15 | Friedrich Laudan | Swivel device for loading booms of ships |
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