GB191208489A - Improvements in and relating to Automatic Grabs, particularly applicable for Coarse Material. - Google Patents
Improvements in and relating to Automatic Grabs, particularly applicable for Coarse Material.Info
- Publication number
- GB191208489A GB191208489A GB191208489DA GB191208489A GB 191208489 A GB191208489 A GB 191208489A GB 191208489D A GB191208489D A GB 191208489DA GB 191208489 A GB191208489 A GB 191208489A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stirrup
- grab
- closing
- extension
- closed
- 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
- B66C3/02—Bucket grabs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
8489. Pohlig Akt. - Ges., J., and Kraemer, E. Oct. 14, 1911, [Convention date]. Grab-buckets.-Relates to grabs of the type in which the bucket halves do not come together when the grab is closed, the closing being effected by an auxiliary stirrup, and consists in giving to the movement of the stirrup a lead in advance of the opening movement of the jaws and a lag during the closing movement. In the form shown in Fig. 2, the stirrup a is pivoted to one of the bucket members and is also suspended from the grab frame by a rope or chain e. During opening, the stirrup, owing to this double suspension, is given a lead. When the grab is completely open, the catches g, h engage. On closing the grab, the stirrup is not released until the grab is nearly closed, whereupon the hook h engages the lug k, and the stirrup is released. In the modification shown in Fig. 5, the stirrup is pivoted to the frame of the grab and has an extension m provided with a counterweight so that the stirrup hangs as shown when free. When the grab jaws are closed, the stirrup a is held in its proper place by a stop o on the bucket adapted to abut against an extension p. When the grab opens, after it has moved a little, the stop o releases the stirrup a, which is swung up, as shown, and remains in this position during the opening and during most of the closing movement. When the grab is nearly closed, the lug o engages the extension p, and the stirrup is moved down.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE191208489X | 1911-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191208489A true GB191208489A (en) | 1912-07-04 |
Family
ID=32522396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191208489D Expired GB191208489A (en) | 1911-10-14 | 1912-04-10 | Improvements in and relating to Automatic Grabs, particularly applicable for Coarse Material. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191208489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184693A (en) * | 2021-05-24 | 2021-07-30 | 安徽马钢矿业资源集团姑山矿业有限公司 | Deep-digging grab bucket structure for mine field traveling crane |
-
1912
- 1912-04-10 GB GB191208489D patent/GB191208489A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184693A (en) * | 2021-05-24 | 2021-07-30 | 安徽马钢矿业资源集团姑山矿业有限公司 | Deep-digging grab bucket structure for mine field traveling crane |
| CN113184693B (en) * | 2021-05-24 | 2022-04-05 | 安徽马钢矿业资源集团姑山矿业有限公司 | Deep-digging grab bucket structure for mine field traveling crane |
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