GB196056A - Improvements in cranes - Google Patents
Improvements in cranesInfo
- Publication number
- GB196056A GB196056A GB94022A GB94022A GB196056A GB 196056 A GB196056 A GB 196056A GB 94022 A GB94022 A GB 94022A GB 94022 A GB94022 A GB 94022A GB 196056 A GB196056 A GB 196056A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jib
- pulleys
- sheave
- round
- reeved
- 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
196,056. Griffiths, E., and Armstrong, Whitworth, & Co., Ltd., Sir W. G. Jan. 11, 1922. Jib cranes.-To maintain the load at a fixed height during luffing, the hoisting rope passes from the load over a sheave at the jib head, thence round a sheave on the crane superstructure, and then back to an intermediate sheave mounted on the jib above the line joining the jib head and jib pivot, the rope being reeved as many times as desirable round the superstructure and intermediate pulleys before passing to the winding drum. The figure shows the invention applied to a crane of the overtruss type in which the jib forms an isosceles triangle. The hoisting rope passes over the single head sheave 4 and a ,guide sheave, 5 at the apex of the triangle to one of a series of sheaves 6 at the top of the post and then is reeved as many times as is necessary round pulleys 11 connected by a link 10 to the apex of the jib and the pulleys 6 before passing to the winding drum 7. In a modification, the link 10 and pulleys 11 are omitted, and the rope is reeved directly round multiple pulleys 5, 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB94022A GB196056A (en) | 1922-01-11 | 1922-01-11 | Improvements in cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB94022A GB196056A (en) | 1922-01-11 | 1922-01-11 | Improvements in cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB196056A true GB196056A (en) | 1923-04-11 |
Family
ID=9713168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB94022A Expired GB196056A (en) | 1922-01-11 | 1922-01-11 | Improvements in cranes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB196056A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2888150A (en) * | 1954-11-16 | 1959-05-26 | Clyde Iron Works Inc | Level luffing attachment for cranes |
| CN103641002A (en) * | 2013-12-11 | 2014-03-19 | 徐工集团工程机械股份有限公司 | Assembling device and method of variable-amplitude pulley block |
-
1922
- 1922-01-11 GB GB94022A patent/GB196056A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2888150A (en) * | 1954-11-16 | 1959-05-26 | Clyde Iron Works Inc | Level luffing attachment for cranes |
| CN103641002A (en) * | 2013-12-11 | 2014-03-19 | 徐工集团工程机械股份有限公司 | Assembling device and method of variable-amplitude pulley block |
| CN103641002B (en) * | 2013-12-11 | 2015-12-09 | 徐工集团工程机械股份有限公司 | Luffing assembly pulley assembling device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB196056A (en) | Improvements in cranes | |
| GB202741A (en) | Improvements in or relating to cranes | |
| GB267825A (en) | Improvements in luffing cranes | |
| GB962427A (en) | Improvements in climbing cranes | |
| GB1049863A (en) | Improvements relating to cranes | |
| GB141446A (en) | Improvements in luffing cranes | |
| GB602845A (en) | Improvements in cranes or derricks | |
| GB1104157A (en) | Improvements relating to cranes | |
| GB225033A (en) | Improvements in and relating to level luffing gear for jib transporters, cranes and the like | |
| GB387888A (en) | An improved jib-crane with adjustable counterweight | |
| GB550498A (en) | Improvements in or relating to cranes or the like | |
| GB245477A (en) | Improvements in cranes | |
| GB221867A (en) | Improvements in cranes | |
| GB289083A (en) | Improvements in and relating to level luffing jib cranes | |
| GB206407A (en) | Improvements in jib cranes | |
| GB306223A (en) | Improvements in luffing jib cranes | |
| GB312425A (en) | Improvements in luffing cranes | |
| SU589202A1 (en) | Jib-type crane | |
| GB309262A (en) | Improvements in and relating to jib cranes | |
| GB562517A (en) | Luffing and slewing crane | |
| GB264769A (en) | Improvements in cranes | |
| GB220588A (en) | Improvements in or relating to jib cranes | |
| GB191304264A (en) | Improvements in and relating to Luffing Cranes. | |
| GB227170A (en) | Improvements in luffing cranes | |
| GB520182A (en) | Hoisting cranes |