GB580904A - Improvements in or relating to the manufacture of shackles - Google Patents
Improvements in or relating to the manufacture of shacklesInfo
- Publication number
- GB580904A GB580904A GB1871344A GB1871344A GB580904A GB 580904 A GB580904 A GB 580904A GB 1871344 A GB1871344 A GB 1871344A GB 1871344 A GB1871344 A GB 1871344A GB 580904 A GB580904 A GB 580904A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blank
- electrically
- shackle
- shape
- bending
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L13/00—Making terminal or intermediate chain links of special shape; Making couplings for chains, e.g. swivels, shackles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
580,904. Making shackles. ARON, H., and OMES, Ltd. Sept. 29, 1944, No. 18713. [Classes 83 (ii) and 83 (iv)] Angular bending; dies.-A method of making a shackle comprises electrically up-setting heads on each end of a straight blank, pressing them to the shape of the desired eyes, electrically heating the centre portion only of the blank and bending the heated blank to U-shape by pressing it into a U- shaped die. Each end of a bar is electrically upset and pressed to form eyes 11, 12 and the centre portion 20 is then electrically heated by means of vice electrodes 15, 16 and 17, 18 connected to the secondary winding 19 of a step-down transformer. The blank is then placed horizontally between guides 30, 31 on a die block 21 and is pressed to U-shape by means of a plunger 34. The die block has a central opening 22 lined with plates 24, 25 having vertical slots 28 to receive the shank 20 of the shackle and also to support the lower sides of the enlarged eye portions so that they are correctly positioned relatively to one another in the completed shackle. An adjustable end stop 32 facilitates the correct positioning of the blank over the recess. The machining of the eye openings may be carried out either before or after the final bending operation. Specifications 288,488, [Class 83 (iv)], 360,974 and 520,688 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1871344A GB580904A (en) | 1944-09-29 | 1944-09-29 | Improvements in or relating to the manufacture of shackles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1871344A GB580904A (en) | 1944-09-29 | 1944-09-29 | Improvements in or relating to the manufacture of shackles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB580904A true GB580904A (en) | 1946-09-24 |
Family
ID=10117135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1871344A Expired GB580904A (en) | 1944-09-29 | 1944-09-29 | Improvements in or relating to the manufacture of shackles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB580904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875171A (en) * | 2009-04-29 | 2010-11-03 | 巨力索具股份有限公司 | Method for manufacturing shackle body |
-
1944
- 1944-09-29 GB GB1871344A patent/GB580904A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875171A (en) * | 2009-04-29 | 2010-11-03 | 巨力索具股份有限公司 | Method for manufacturing shackle body |
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