GB1393225A - Cranes - Google Patents
CranesInfo
- Publication number
- GB1393225A GB1393225A GB4360073A GB4360073A GB1393225A GB 1393225 A GB1393225 A GB 1393225A GB 4360073 A GB4360073 A GB 4360073A GB 4360073 A GB4360073 A GB 4360073A GB 1393225 A GB1393225 A GB 1393225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jib
- hook
- movement
- ram
- valve
- 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
- 239000012530 fluid Substances 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 1
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
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
-
- 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
- B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
1393225 Mobile luffing arm apparatus INTERNATIONAL HARVESTER CO 17 Sept 1973 [21 Sept 1972] 43600/73 Heading B8H A jib 8 is pivotally mounted on a support frame 10 for movement about a horizontal axis 9 under the action of a ram 13 and a load-engaging hook 18 is mounted on the jib 8 for movement therealong in response to pivotal movement of the jib in order to maintain the horizontal distance between the hook 18 and axis 9 constant. The hook 18 moves along rails 15 (only one shown), under the action of an hydraulic ram 22 to which fluid is supplied via an hydraulic control valve 41 so that on raising the jib 8 by means of the ram 13 a bell crank 32 on the jib is rotated therewith and actuates the valve 41 through a rod 38, the valve then supplying fluid to the ram 22 to cause its extension and thus movement of the hook 18 outwardly from the frame 10, such movement effecting angular movement of a telescopic arm 25 which is connected at one end to the hook 18 and at its other end to the bell crank 32 through a rod 30, the arm 25, in moving from its full line to its phantom line position shown, causing the bell crank 32 to rotate in the direction opposite to the direction of its rotation caused by the pivoting of the jib 8, thus returning the valve 41 to its neutral position. On lowering the jib 8 the hook 18 is moved inwardly towards the frame 10, the latter being mounted on a vehicle (5), Fig. 1 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPB051972 | 1972-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1393225A true GB1393225A (en) | 1975-05-07 |
Family
ID=3765342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4360073A Expired GB1393225A (en) | 1972-09-21 | 1973-09-17 | Cranes |
Country Status (4)
Country | Link |
---|---|
US (1) | US3855954A (en) |
CA (1) | CA1002004A (en) |
FR (1) | FR2213223B1 (en) |
GB (1) | GB1393225A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2443421A1 (en) * | 1978-12-08 | 1980-07-04 | Gesa | Lifting beam with crane hook - has an elbow joint to allow hook to travel along outer part of arm |
US4693384A (en) * | 1985-12-20 | 1987-09-15 | Gilmore Transportation Services, Inc. | Excavator boom derrick |
GB2222996A (en) * | 1988-09-21 | 1990-03-28 | Graham John Darby | Lifting device for tractor; lifting attachment |
US5188247A (en) * | 1991-11-04 | 1993-02-23 | Keith Jastrow | Lifting apparatus |
US11945104B2 (en) * | 2021-01-08 | 2024-04-02 | International Business Machines Corporation | Jib crane mechanism |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1595029A (en) * | 1922-10-31 | 1926-08-03 | Smith Robert Arthur | Crane for lifting, lowering, and transporting loads |
US2548038A (en) * | 1947-10-24 | 1951-04-10 | Leona N Moliskey | Fluid pressure actuated lifting apparatus |
FR1279493A (en) * | 1960-11-10 | 1961-12-22 | Advanced crane | |
US3352441A (en) * | 1964-10-28 | 1967-11-14 | Alden Lars Anders Gustaf | Crane boom |
US3373885A (en) * | 1966-07-08 | 1968-03-19 | Virgil E. Allison | Loading attachment |
-
1973
- 1973-09-17 GB GB4360073A patent/GB1393225A/en not_active Expired
- 1973-09-17 US US00398917A patent/US3855954A/en not_active Expired - Lifetime
- 1973-09-17 CA CA181,265A patent/CA1002004A/en not_active Expired
- 1973-09-20 FR FR7333799A patent/FR2213223B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2213223B1 (en) | 1977-09-09 |
US3855954A (en) | 1974-12-24 |
DE2346789B2 (en) | 1977-06-23 |
CA1002004A (en) | 1976-12-21 |
FR2213223A1 (en) | 1974-08-02 |
DE2346789A1 (en) | 1974-04-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |