GB816566A - An improved load-gripping device for use in the lifting and lowering of timber - Google Patents
An improved load-gripping device for use in the lifting and lowering of timberInfo
- Publication number
- GB816566A GB816566A GB3069956A GB3069956A GB816566A GB 816566 A GB816566 A GB 816566A GB 3069956 A GB3069956 A GB 3069956A GB 3069956 A GB3069956 A GB 3069956A GB 816566 A GB816566 A GB 816566A
- Authority
- GB
- United Kingdom
- Prior art keywords
- joists
- sling
- lifting
- timber
- joist
- 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
- 238000010276 construction Methods 0.000 abstract 1
- 230000000875 corresponding Effects 0.000 abstract 1
- 239000002783 friction material Substances 0.000 abstract 1
- 230000000284 resting 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
- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
816,566. Slings for lifting stacks of timber. QUIGGIN & CO. Ltd. Oct. 8, 1957 [Oct. 9, 1956], No. 30699/56. Class 78 (4). A sling for lifting a stack of timber includes a number of pairs of upper and lower joists I, L drawn together by chains or cables F running from an anchorage H on each end of the upper joist I, under a snatch block G on the lower joist L, and through a guide or slot on the upper joist to a yoke C, one yoke being provided for each pair of joists. The construction illustrated employs two pairs of joists and the snatch blocks G are connected to the lower joists L by hooks N and eyes M so that the lower joists may be redisposed to lie at right angles to the upper joists I when the sling is being lowered over a stack. In this condition each cable F is prevented from running through a slot J in the corresponding end of the beam I by engagement of a bolt K with a stop O clamped on the cable F in such a way that it is shifted, to allow the sling to clamp the load, as soon as the sling is lifted with the load resting on the lower joists L. The yokes C are joined by a box section member A to which is welded a tongue B for engagement by the hook of a crane. The joists I, L may be faced by friction material R or, where they are of channel section, they may, according to the Provisional Specification, be filled with a rectangular wooden bar standing proud of the flanges.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816566A true GB816566A (en) | 1959-07-15 |
Family
ID=1742208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3069956A Expired GB816566A (en) | 1956-10-09 | An improved load-gripping device for use in the lifting and lowering of timber |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816566A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444766A (en) * | 2014-12-03 | 2015-03-25 | 国家电网公司 | Lifting device for insulating sleeve of power transformer |
| CN109353927A (en) * | 2018-11-27 | 2019-02-19 | 湖北三威路桥机械有限公司 | A kind of hoisting mechanism |
-
1956
- 1956-10-09 GB GB3069956A patent/GB816566A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444766A (en) * | 2014-12-03 | 2015-03-25 | 国家电网公司 | Lifting device for insulating sleeve of power transformer |
| CN109353927A (en) * | 2018-11-27 | 2019-02-19 | 湖北三威路桥机械有限公司 | A kind of hoisting mechanism |
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