GB842439A - Improvements in or relating to punching apparatus - Google Patents
Improvements in or relating to punching apparatusInfo
- Publication number
- GB842439A GB842439A GB4095858A GB4095858A GB842439A GB 842439 A GB842439 A GB 842439A GB 4095858 A GB4095858 A GB 4095858A GB 4095858 A GB4095858 A GB 4095858A GB 842439 A GB842439 A GB 842439A
- Authority
- GB
- United Kingdom
- Prior art keywords
- punch
- punches
- die
- energy
- carrier
- 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
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
842,439. Selective punching apparatus. INTERNATIONAL COMPUTERS & TABULATORS Ltd. Dec. 18, 1958, No. 40958/58. Class 31 (2). Punching apparatus comprises a plurality of punches each of which is supported for independent lengthwise movement into and out of a die and has corresponding selectively operable means adapted to constrain it against lengthwise movement towards the die while energy is built up in a spring co-operating with the punch, said energy on release of the punch by said means being utilized to move the punch, through material to be punched and into the die. As shown in Fig. 1, the punching apparatus comprises punches 15, arranged in rows and columns, supported by a carrier 8 reciprocable towards and away from a die 1, each punch being surrounded by a compression spring 20 extending between a shoulder 17 on the punch and an abutment plate 21, movable with the carrier, and each punch being fitted at its end with an armature 19 which is associated with a selectively operable stationary electromagnet 26 adapted, when energized, to constrain the punch against lengthwise movement during the initial period of movement of the carrier towards the die thereby to build up energy in the spring 20 which energy on release of the punch, when the electromagnet is de-energized, causes the punch to move with and relative to the carrier to effect movement of the punch through a statistical card or tape to be punched and into the die. A resilient buffer 22 movable with the plate 21 is adapted to absorb surplus energy in the punches. To prevent rotation of the punches about their longitudinal axes, the shoulders 17 are each provided with flat opposite sides which co-operate with guides 25 fixed to a stripper plate 4. The electromagnets for each column of punches are supported by a fixed bar 28. The electromagnets, the ends of which are anchored in a fixed plate 27, are of horse-shoe shape each having one pole of square cross-section and one of oblong rectangular cross-section. The electromagnets are arranged as shown in Fig. 4. The material is fed to the punches by pairs of rollers 6, 7.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4095858A GB842439A (en) | 1958-12-18 | 1958-12-18 | Improvements in or relating to punching apparatus |
FR1214556D FR1214556A (en) | 1958-12-18 | 1959-01-23 | Improvements to perforating devices |
DEP22118A DE1146682B (en) | 1958-12-18 | 1959-01-27 | Punch drive for card punch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4095858A GB842439A (en) | 1958-12-18 | 1958-12-18 | Improvements in or relating to punching apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB842439A true GB842439A (en) | 1960-07-27 |
Family
ID=10417440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4095858A Expired GB842439A (en) | 1958-12-18 | 1958-12-18 | Improvements in or relating to punching apparatus |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1146682B (en) |
FR (1) | FR1214556A (en) |
GB (1) | GB842439A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012208516A1 (en) * | 2012-05-22 | 2013-11-28 | Bayerische Motoren Werke Aktiengesellschaft | vehicle headlights |
-
1958
- 1958-12-18 GB GB4095858A patent/GB842439A/en not_active Expired
-
1959
- 1959-01-23 FR FR1214556D patent/FR1214556A/en not_active Expired
- 1959-01-27 DE DEP22118A patent/DE1146682B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR1214556A (en) | 1960-04-11 |
DE1146682B (en) | 1963-04-04 |
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