GB1296743A - - Google Patents
Info
- Publication number
- GB1296743A GB1296743A GB1296743DA GB1296743A GB 1296743 A GB1296743 A GB 1296743A GB 1296743D A GB1296743D A GB 1296743DA GB 1296743 A GB1296743 A GB 1296743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- additional
- main drum
- derrick boom
- driven
- 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
- 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
- B66C23/60—Derricks
- B66C23/605—Derricks employing ships' masts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1296743 Ships' cranes BLOHM & VOSS AG 29 May 1970 25996/70 Heading B8B A ship's crane comprises a derrick boom 3 pivoted at 4 and supported from two posts 2 each with a span tackle with parts 12, 12<SP>1</SP> respectively connected to main drum 40 and additional drum 41 on a winch. The main drum 40 is directly driven by a motor 42 while the additional drum 41, which has a smaller cable capacity, can free wheel or be connected to be driven with the main drum 40 through a coupling 47. For heavy loads the additional drum 41 freewheels and part 12<SP>1</SP> is essentially anchored on pin 43. For light loads the drums 40, 41 are coupled for rotation together effectively doubling the rate of swing of the derrick boom 3.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2599670 | 1970-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1296743A true GB1296743A (en) | 1972-11-15 |
Family
ID=10236679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1296743D Expired GB1296743A (en) | 1970-05-29 | 1970-05-29 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1296743A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341315A (en) * | 1978-11-30 | 1982-07-27 | Tseng Tsiung Siung | Marine derrick arrangement |
-
1970
- 1970-05-29 GB GB1296743D patent/GB1296743A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341315A (en) * | 1978-11-30 | 1982-07-27 | Tseng Tsiung Siung | Marine derrick arrangement |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |