GB418425A - Improvements relating to ship's derrick gear - Google Patents
Improvements relating to ship's derrick gearInfo
- Publication number
- GB418425A GB418425A GB1409934A GB1409934A GB418425A GB 418425 A GB418425 A GB 418425A GB 1409934 A GB1409934 A GB 1409934A GB 1409934 A GB1409934 A GB 1409934A GB 418425 A GB418425 A GB 418425A
- Authority
- GB
- United Kingdom
- Prior art keywords
- derrick
- heel
- gear
- ship
- mast
- 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)
- Gear Transmission (AREA)
Abstract
418,425. Derricks. MITCHELL, C., 2, Lixmount Avenue, Edinburgh. May 10, 1934, No. 14099. [Class 78 (iv).] A cargo derrick D, as shown, is provided with two topping lifts E, F led over pulleys on opposite ends of an upper derrick table A and passing to a deck anchorage and to a winch respectively, and the derrick heel is adjustable on a lower derrick table B to either side of the mast in order to control the bias on the derrick and to vary the outreach. The derrick heel may be traversed by screw-and-nut gear. Two notches H, L are provided. The derrick heel is moved to that side of the mast towards which the derrick is to be swung, the topping lift at that side is anchored, and the derrick is slued by the winch at the opposite side. The controls of the winches are at the inboard side for operation by one man.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1409934A GB418425A (en) | 1934-05-10 | 1934-05-10 | Improvements relating to ship's derrick gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1409934A GB418425A (en) | 1934-05-10 | 1934-05-10 | Improvements relating to ship's derrick gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB418425A true GB418425A (en) | 1934-10-24 |
Family
ID=10034956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1409934A Expired GB418425A (en) | 1934-05-10 | 1934-05-10 | Improvements relating to ship's derrick gear |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB418425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2754975A (en) * | 1951-05-24 | 1956-07-17 | Valdemar C Farrell | Topping lift rigging for boom type hoisting apparatus |
| US3098569A (en) * | 1962-01-26 | 1963-07-23 | Valdemar C Farrell | Boom rigging |
| WO1980002136A1 (en) * | 1979-03-29 | 1980-10-16 | Speedcranes Ltd | A heavy-duty fore-and-aft working ship's crane |
-
1934
- 1934-05-10 GB GB1409934A patent/GB418425A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2754975A (en) * | 1951-05-24 | 1956-07-17 | Valdemar C Farrell | Topping lift rigging for boom type hoisting apparatus |
| US3098569A (en) * | 1962-01-26 | 1963-07-23 | Valdemar C Farrell | Boom rigging |
| WO1980002136A1 (en) * | 1979-03-29 | 1980-10-16 | Speedcranes Ltd | A heavy-duty fore-and-aft working ship's crane |
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