GB520182A - Hoisting cranes - Google Patents
Hoisting cranesInfo
- Publication number
- GB520182A GB520182A GB2932738A GB2932738A GB520182A GB 520182 A GB520182 A GB 520182A GB 2932738 A GB2932738 A GB 2932738A GB 2932738 A GB2932738 A GB 2932738A GB 520182 A GB520182 A GB 520182A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jib
- luffing
- pulley
- arm
- rope
- 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
- B66C23/06—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)
- Jib Cranes (AREA)
Abstract
520,182. Jib cranes. STOTHERT & PITT, Ltd., and PITT, R. B. Oct. 10, 1938, No. 29327. [Class 78 (iv)] For luffing with controlled movement of load, in cranes of the type in which the jib is pivoted on a fixed horizontal axis on the framework, the load rope 11 is suspended from a pulley 12 on an arm 6.pivoted to the jib at 8, and thence passes over a pulley 10 to the hoisting drum 13. The arm 6 is supported by a rope 17 which passes over a jib-head pulley 18 to a fixed point 19 on the framework, or round a pulley at the point 19 back to a fixed point on the jib. When luffing takes place by operating the drum 16<SP>1</SP> controlling the cable system 14 passing round the pulleys 15, 19<SP>1</SP>, the arm 6 is raised or lowered by the rope 17 to compensate for the luffing to a greater or less extent, thus giving any desired path for the load hook 7 from level luffing to a steeplyinclined path.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2932738A GB520182A (en) | 1938-10-10 | 1938-10-10 | Hoisting cranes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2932738A GB520182A (en) | 1938-10-10 | 1938-10-10 | Hoisting cranes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB520182A true GB520182A (en) | 1940-04-17 |
Family
ID=10289796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2932738A Expired GB520182A (en) | 1938-10-10 | 1938-10-10 | Hoisting cranes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB520182A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682957A (en) * | 1950-03-28 | 1954-07-06 | Motion Picture Res Council Inc | Crane with folding boom |
US4453643A (en) * | 1978-05-31 | 1984-06-12 | Coles Cranes Limited | Cranes |
-
1938
- 1938-10-10 GB GB2932738A patent/GB520182A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682957A (en) * | 1950-03-28 | 1954-07-06 | Motion Picture Res Council Inc | Crane with folding boom |
US4453643A (en) * | 1978-05-31 | 1984-06-12 | Coles Cranes Limited | Cranes |
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