GB419111A - Improvements in or relating to jib cranes - Google Patents
Improvements in or relating to jib cranesInfo
- Publication number
- GB419111A GB419111A GB2332533A GB2332533A GB419111A GB 419111 A GB419111 A GB 419111A GB 2332533 A GB2332533 A GB 2332533A GB 2332533 A GB2332533 A GB 2332533A GB 419111 A GB419111 A GB 419111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- wheels
- axles
- lever
- cranes
- 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
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Control And Safety Of Cranes (AREA)
- Handcart (AREA)
Abstract
419,111. Jib cranes. BABCOCK & WILCOX, Ltd., and HOLLICK, F. W., 34, Farringdon Street, London. Aug. 22, 1933, No. 23325. [Class 78 (iv).] A safe-load indicator or power cut-off for slueing cranes is actuated by relative movement under load between a point on the slueing structure and a point on the fixed base. As shown the bed-plate 1 is mounted on wheels to turn on the fixed base 2. The two wheels 6 which are remote from the jib are mounted on non-rotating axles 7 which are pressed towards the base 2 by plate springs 9 bearing against bars 10 on the housings 8, so that when the load on the wheels 6 is reduced by the increased overturning moment of the load on the crane the housings 8 rise relatively to the axles 7. The axles 7 are extended at 7<1> and connected by links 15 to opposite ends of a compensating lever, which actuates a multiplying lever 18. The lever 18 actuates two push-button switches through adjustable tappets and through cushioning springs so as to show a red light and to give an audible signal at two successive predetermined values of the overturning moment. The arrangement may also be used for cutting off power from the hoisting motor or from the luffing motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2332533A GB419111A (en) | 1933-08-22 | 1933-08-22 | Improvements in or relating to jib cranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2332533A GB419111A (en) | 1933-08-22 | 1933-08-22 | Improvements in or relating to jib cranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB419111A true GB419111A (en) | 1934-11-06 |
Family
ID=10193778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2332533A Expired GB419111A (en) | 1933-08-22 | 1933-08-22 | Improvements in or relating to jib cranes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB419111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1106941B (en) * | 1956-09-12 | 1961-05-18 | Licentia Gmbh | Load torque protection for jib crane systems |
-
1933
- 1933-08-22 GB GB2332533A patent/GB419111A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1106941B (en) * | 1956-09-12 | 1961-05-18 | Licentia Gmbh | Load torque protection for jib crane systems |
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