GB542786A - Improvements in or relating to portable cranes - Google Patents
Improvements in or relating to portable cranesInfo
- Publication number
- GB542786A GB542786A GB1420040A GB1420040A GB542786A GB 542786 A GB542786 A GB 542786A GB 1420040 A GB1420040 A GB 1420040A GB 1420040 A GB1420040 A GB 1420040A GB 542786 A GB542786 A GB 542786A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jib
- pulley
- carriage
- winch
- anchored
- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/36—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 specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating 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
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
542,786. Cranes. ORTHOSTYLE, Ltd., and CODD, R. Sept. 14, 1940, No. 14200. [Class 78 (iv)] The jib is pivoted on a portable crane at a point intermediate its length and is raised to, or lowered from, its operative position by the hoisting rope which passes round a pulley at the lower end of the jib, the hook being then anchored to the jib. The jib 10, 22 is pivoted at a point 18 to braced standards 17 on a carriage 11. When in the raised position shown in full lines, a stay 32 becomes taut and the lower end of the jib bears against an abutment plate on the carriage and is locked thereto by a cotter pin. The hoisting rope or chain 19 is led from the upper of two pulleys 20, 21 over a pulley 23 at the angle of the jib, and thence over a pulley 24 on the lower extension of the jib to a winch 25. When the hook 33 is anchored to a p int on the jib, and the cotter pin adjacent the abutment plate is removed, the jib may be lowered gradually by the winch into the position shown in dotted lines. The rope then engages pulley 31 on the carriage 11 to ensure effective leverage on the jib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1420040A GB542786A (en) | 1940-09-14 | 1940-09-14 | Improvements in or relating to portable cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1420040A GB542786A (en) | 1940-09-14 | 1940-09-14 | Improvements in or relating to portable cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB542786A true GB542786A (en) | 1942-01-27 |
Family
ID=10036858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1420040A Expired GB542786A (en) | 1940-09-14 | 1940-09-14 | Improvements in or relating to portable cranes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB542786A (en) |
-
1940
- 1940-09-14 GB GB1420040A patent/GB542786A/en not_active Expired
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