GB372860A - Improvements in grabs - Google Patents
Improvements in grabsInfo
- Publication number
- GB372860A GB372860A GB644931A GB644931A GB372860A GB 372860 A GB372860 A GB 372860A GB 644931 A GB644931 A GB 644931A GB 644931 A GB644931 A GB 644931A GB 372860 A GB372860 A GB 372860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- buckets
- grab
- rope
- closing
- guide
- 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
- B66C3/12—Grabs actuated by two or more ropes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
372,860. Grab - buckets. V O O R - WINDE, W., 93B, Pretorialaan, Rotterdam, Holland. March 2, 1931, No. 6449. [Class 78 (iv).] In grab-buckets in which the closing ropes 7 pass around pulley blocks 9, 10, the closing force may be adjusted by laying one or more lengths of the rope between the two blocks over a fixed guide such as 13, so as not to be shortened during the closing movement. The guides 13 may be adjustable vertically and may be placed so as to permit of some shortening of the guided length of the rope. To avoid friction in this case the guide may be a pulley as at 131.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB644931A GB372860A (en) | 1931-03-02 | 1931-03-02 | Improvements in grabs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB644931A GB372860A (en) | 1931-03-02 | 1931-03-02 | Improvements in grabs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB372860A true GB372860A (en) | 1932-05-19 |
Family
ID=9814676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB644931A Expired GB372860A (en) | 1931-03-02 | 1931-03-02 | Improvements in grabs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB372860A (en) |
-
1931
- 1931-03-02 GB GB644931A patent/GB372860A/en not_active Expired
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