GB562595A - Improvements relating to grabs - Google Patents
Improvements relating to grabsInfo
- Publication number
- GB562595A GB562595A GB1831242A GB1831242A GB562595A GB 562595 A GB562595 A GB 562595A GB 1831242 A GB1831242 A GB 1831242A GB 1831242 A GB1831242 A GB 1831242A GB 562595 A GB562595 A GB 562595A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- rope
- tumbler
- drum
- grab
- 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
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/06—Grabs actuated by a single rope or chain
- B66C3/08—Grabs actuated by a single rope or chain and having tipping rings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
- Basic Packing Technique (AREA)
Abstract
562,595. Grabs. PRIESTMAN BROS., Ltd., and CQOK, A. Dec. 24, 1942, No. 18312. [Class 78 (iv)] In a single rope grab of the kind described in Specification 200,410, [Class 78 (iv)], in which the hoisting rope is wound round a drum, the rotation of which causes the jaws to close, the locking lever which engages the notches in the rope drum, is made as a pawl acting in compression during engagement and is provided with a projection which engages the tail piece of the tumbler to hold the tumbler raised as long as the pawl is in engagement with the notches of the drum. The Figure shows a construction in which the grab is suspended by its hook c from a ring a, the load being taken by a pin p. At this time the tumbler s is raised and the locking pawl t is free to engage with the drum e and the girder m is lowered to open the jaws of the grab when the rope is paid out. When the rope is drawn up the pawl t engages on the drum e and frees the hook c. The tumbler s is meanwhile held up by the arm u of the pawl engaging the tail piece x until the grab is lowered to the load. The fall of the tumbler s on the release of the pawl t lifts the latter and re-erects the hook c so that the grab closes, lifting a load when the rope is drawn up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1831242A GB562595A (en) | 1942-12-24 | 1942-12-24 | Improvements relating to grabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1831242A GB562595A (en) | 1942-12-24 | 1942-12-24 | Improvements relating to grabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB562595A true GB562595A (en) | 1944-07-07 |
Family
ID=10110330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1831242A Expired GB562595A (en) | 1942-12-24 | 1942-12-24 | Improvements relating to grabs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB562595A (en) |
-
1942
- 1942-12-24 GB GB1831242A patent/GB562595A/en not_active Expired
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