GB843008A - Improvements in automatic lifting tongs - Google Patents
Improvements in automatic lifting tongsInfo
- Publication number
- GB843008A GB843008A GB13157A GB13157A GB843008A GB 843008 A GB843008 A GB 843008A GB 13157 A GB13157 A GB 13157A GB 13157 A GB13157 A GB 13157A GB 843008 A GB843008 A GB 843008A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- slot
- grab
- dog
- turned
- 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
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/422—Gripping members engaging only the external or internal surfaces of the articles actuated by lifting force
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
843,008. Lifting-dogs with automatic control. SOMERS.Ltd., W. Jan. 2, 1958 [Jan. 2, 1957], No. 131/57. Class 78 (4). In lifting-dogs such as that described in Specification 642,100, in which a latching bolt 3 is turned, each time the grab is raised or lowered, so that its head 2 is alternately positioned to enter or leave a slot 1 to lock the grab in its open position or to unlock it, it sometimes happens that the rotation of the dog 3 as the grab is lowered is insufficient to carry its transverse operating-pin past the corresponding apex on the rack-like cam 6, 7 by which the dog 3 is turned; this results in the dog being insecurely latched. To obviate this, according to the invention, the shapes of the head 2 and of its co-operating slot 1 are such that the head does not lodge in the slot unless the head has been turned through a minimum angle. In the construction illustrated the slot 1 is square and the flanks 2b of the arms 2a of the head are tangential to the central pin and inclined at about 20 degrees to the axis of the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13157A GB843008A (en) | 1957-01-02 | 1957-01-02 | Improvements in automatic lifting tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13157A GB843008A (en) | 1957-01-02 | 1957-01-02 | Improvements in automatic lifting tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB843008A true GB843008A (en) | 1960-08-04 |
Family
ID=9698962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13157A Expired GB843008A (en) | 1957-01-02 | 1957-01-02 | Improvements in automatic lifting tongs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB843008A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204797B (en) * | 1961-09-18 | 1965-11-11 | Electricite De France | Gripper for a loading device |
| FR2456066A1 (en) * | 1979-05-09 | 1980-12-05 | Scal Sweden Ab | LIFTING DEVICE FOR CONTAINERS OR THE LIKE |
| WO2015107526A1 (en) * | 2014-01-20 | 2015-07-23 | Israel Aerospace Industries Ltd. | A locking apparatus and a securing mechanism therein |
-
1957
- 1957-01-02 GB GB13157A patent/GB843008A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204797B (en) * | 1961-09-18 | 1965-11-11 | Electricite De France | Gripper for a loading device |
| FR2456066A1 (en) * | 1979-05-09 | 1980-12-05 | Scal Sweden Ab | LIFTING DEVICE FOR CONTAINERS OR THE LIKE |
| WO2015107526A1 (en) * | 2014-01-20 | 2015-07-23 | Israel Aerospace Industries Ltd. | A locking apparatus and a securing mechanism therein |
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