GB899129A - Improvements relating to pedal cycle components, particularly cycle fork crowns, and to their method of manufacture - Google Patents
Improvements relating to pedal cycle components, particularly cycle fork crowns, and to their method of manufactureInfo
- Publication number
- GB899129A GB899129A GB428961A GB428961A GB899129A GB 899129 A GB899129 A GB 899129A GB 428961 A GB428961 A GB 428961A GB 428961 A GB428961 A GB 428961A GB 899129 A GB899129 A GB 899129A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cycle
- crown
- manufacture
- improvements relating
- pedal
- 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
- B21D53/00—Making other particular articles
- B21D53/86—Making other particular articles other parts for bicycles or motorcycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
899,129. Making cycle parts; stamping. HADEN BROS. Ltd. Feb. 4, 1961, No. 4289/61. Classes 83 (2) and 83 (4). The radiused edges of a cycle fork crown are formed as square cut corners by the method of placing the crown between two dies and upsetting the metal of the crown into the corners of one die. One die comprises blocks 11, 13 and 16, a sharp corner being formed at 15, and the ram-operated block 16 including an ejector 17. A block 7 forms the lower die, the finished crown 1 with square cut corners 5 being shown in Fig. 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB428961A GB899129A (en) | 1961-02-04 | 1961-02-04 | Improvements relating to pedal cycle components, particularly cycle fork crowns, and to their method of manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB428961A GB899129A (en) | 1961-02-04 | 1961-02-04 | Improvements relating to pedal cycle components, particularly cycle fork crowns, and to their method of manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB899129A true GB899129A (en) | 1962-06-20 |
Family
ID=9774339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB428961A Expired GB899129A (en) | 1961-02-04 | 1961-02-04 | Improvements relating to pedal cycle components, particularly cycle fork crowns, and to their method of manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB899129A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0289437A2 (en) * | 1987-04-28 | 1988-11-02 | Guy Levet | Method for joining at least two edges of sheet metal, in particular for the production by stamping of a bicycle fork crown, and fork crown obtained by this method |
-
1961
- 1961-02-04 GB GB428961A patent/GB899129A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0289437A2 (en) * | 1987-04-28 | 1988-11-02 | Guy Levet | Method for joining at least two edges of sheet metal, in particular for the production by stamping of a bicycle fork crown, and fork crown obtained by this method |
| EP0289437A3 (en) * | 1987-04-28 | 1990-07-18 | Guy Levet | Method for joining at least two edges of sheet metal, in particular for the production by stamping of a bicycle fork crown, and fork crown obtained by this method |
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