GB557125A - Improvements relating to the shaping of cupped metal articles - Google Patents
Improvements relating to the shaping of cupped metal articlesInfo
- Publication number
- GB557125A GB557125A GB1250842A GB1250842A GB557125A GB 557125 A GB557125 A GB 557125A GB 1250842 A GB1250842 A GB 1250842A GB 1250842 A GB1250842 A GB 1250842A GB 557125 A GB557125 A GB 557125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blank
- bulge
- cupped
- head
- cartridge
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/54—Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
557,125. Heading cartridge cases &c. DAVENPORT, S., and PRESSED STEEL CO., Ltd. Sept. 4, 1942, No. 12508. [Classes 83 (ii) and 83 (iv)] In the production of headed cartridge cases and like articles from cupped blanks, the blank is subjected at an early stage in the drawing operations to a single indenting operation that forms an axially projecting bulge round the border of the under surface of the head and also tapers the end of the case adjacent the head. After two draws from a circular disc the cupped blank is indented by a punch 11, Fig. 2, in a ring die 12 enclosing a counter die 13 to form an axial bulge 18 and a taper 15. At the same time a central indentation is formed to receive the pressure cap &c. The blank then undergoes a number of drawing and annealing operations to reduce the walls of the cartridge to finished form after which a single heading operation transfers the metal of the bulge 18 to form the flange 20, Fig. 3, and produces an inturned indent 30 so that burring is eliminated in the subsequent drilling and tapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1250842A GB557125A (en) | 1942-09-04 | 1942-09-04 | Improvements relating to the shaping of cupped metal articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1250842A GB557125A (en) | 1942-09-04 | 1942-09-04 | Improvements relating to the shaping of cupped metal articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB557125A true GB557125A (en) | 1943-11-04 |
Family
ID=10005890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250842A Expired GB557125A (en) | 1942-09-04 | 1942-09-04 | Improvements relating to the shaping of cupped metal articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB557125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3327171A1 (en) * | 1983-02-25 | 1984-08-30 | Simmel S.p.A., Castelfranco Veneto, Treviso | BOTTLE FOR TECHNICAL GAS |
-
1942
- 1942-09-04 GB GB1250842A patent/GB557125A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3327171A1 (en) * | 1983-02-25 | 1984-08-30 | Simmel S.p.A., Castelfranco Veneto, Treviso | BOTTLE FOR TECHNICAL GAS |
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