GB729501A - Improvements relating to grabs - Google Patents
Improvements relating to grabsInfo
- Publication number
- GB729501A GB729501A GB3012152A GB3012152A GB729501A GB 729501 A GB729501 A GB 729501A GB 3012152 A GB3012152 A GB 3012152A GB 3012152 A GB3012152 A GB 3012152A GB 729501 A GB729501 A GB 729501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- grab
- nov
- head
- operated
- 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
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/47—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor with grab buckets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Manipulator (AREA)
Abstract
729,501. Grab-buckets; opening and closing mechanism. PRIESTMAN BROS., Ltd. Nov. 27, 1953 [Nov. 27, 1952], No. 30121/62. Class 78(4). A wide opening grab is operated by a member 16 moving along the line bi-secting the angle between the arms 6 of the grab and bearing upon downwardly diverging radial or nearly radial surfaces 13 on the arms. In the construction illustrated, the member 16 is the cross-head of a double-acting pneumatic ram 3 and is rigid with arms 15 bearing rollers 14 which engage in slots 12 providing the surfaces 13 and formed in plates 11 secured to the arms 6. The pivots 4 of the arms 6 on the head are joined by a link 9 and teeth 10 on the arms ensure their synchronism. The pneumatic ram 3 may be replaced by a hydraulic ram or a screw jack operated. by a reversible electric motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3012152A GB729501A (en) | 1952-11-27 | 1952-11-27 | Improvements relating to grabs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3012152A GB729501A (en) | 1952-11-27 | 1952-11-27 | Improvements relating to grabs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB729501A true GB729501A (en) | 1955-05-04 |
Family
ID=10302625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3012152A Expired GB729501A (en) | 1952-11-27 | 1952-11-27 | Improvements relating to grabs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB729501A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1128622B (en) * | 1959-08-18 | 1962-04-26 | Hermann Schwittling | Gripping device |
FR2487880A1 (en) * | 1981-01-21 | 1982-02-05 | Poclain Sa | Grab bucket with inter-articulating jaws - is driven by jack actuating pair of levers with sliding pivots in jaws |
EP2820942B1 (en) | 2013-03-28 | 2017-02-15 | Cornelis Hendricus Liet | Grabber for separating feed for livestock |
CN111642888A (en) * | 2020-06-09 | 2020-09-11 | 鲁永雪 | Device for measurement, automatic positioning, material taking, smearing and attaching |
CN115385231A (en) * | 2022-08-24 | 2022-11-25 | 无锡市港口机械有限责任公司 | Port material handling hoisting apparatus and intelligent control system |
-
1952
- 1952-11-27 GB GB3012152A patent/GB729501A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1128622B (en) * | 1959-08-18 | 1962-04-26 | Hermann Schwittling | Gripping device |
FR2487880A1 (en) * | 1981-01-21 | 1982-02-05 | Poclain Sa | Grab bucket with inter-articulating jaws - is driven by jack actuating pair of levers with sliding pivots in jaws |
EP2820942B1 (en) | 2013-03-28 | 2017-02-15 | Cornelis Hendricus Liet | Grabber for separating feed for livestock |
CN111642888A (en) * | 2020-06-09 | 2020-09-11 | 鲁永雪 | Device for measurement, automatic positioning, material taking, smearing and attaching |
CN115385231A (en) * | 2022-08-24 | 2022-11-25 | 无锡市港口机械有限责任公司 | Port material handling hoisting apparatus and intelligent control system |
CN115385231B (en) * | 2022-08-24 | 2024-01-05 | 无锡市港口机械有限责任公司 | Port material handling hoisting apparatus and intelligent control system |
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