GB842440A - Improvements in or relating to punching apparatus - Google Patents

Improvements in or relating to punching apparatus

Info

Publication number
GB842440A
GB842440A GB4095958A GB4095958A GB842440A GB 842440 A GB842440 A GB 842440A GB 4095958 A GB4095958 A GB 4095958A GB 4095958 A GB4095958 A GB 4095958A GB 842440 A GB842440 A GB 842440A
Authority
GB
United Kingdom
Prior art keywords
punches
die
carrier
punching
energized
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
Application number
GB4095958A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Computers and Tabulators Ltd
Original Assignee
International Computers and Tabulators Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Computers and Tabulators Ltd filed Critical International Computers and Tabulators Ltd
Priority to GB4095958A priority Critical patent/GB842440A/en
Priority to FR784815A priority patent/FR1234148A/en
Publication of GB842440A publication Critical patent/GB842440A/en
Priority to US9058861 priority patent/US3064881A/en
Expired legal-status Critical Current

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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/04—Perforating by punching, e.g. with relatively-reciprocating punch and bed with selectively-operable punches
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8765—Magnet- or solenoid-actuated tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • Y10T83/8782—Stored energy furnishes cutting force
    • Y10T83/8784—With reset

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

842,440. Selective punching apparatus. INTERNATIONAL COMPUTERS & TABULATORS Ltd. Dec. 18, 1958, No. 40959/58. Class 31 (2). Punching apparatus comprises a plurality of independently lengthwise movable punches arranged for co-operation with a die and normally retained in spaced relation with the die by retaining means individual to the punches and selectively operable to effect release of the punches, the punches on release thereof being movable with and relative to a carrier reciprocable relative to the die and to the punches in their retained positions so that the released punches effect punching due to the kinetic energy thereof and are then restored by the carrier to co-operation with the retaining means. As shown, the punching apparatus comprises punches 15 supported by a carrier 8 reciprocable towards and away from a die 1, the punches being normally retained in spaced relation with the die by energized stationary electromagnets 26 co-operating with armatures 19 fitted at the ends of the punches, and during movement of the carrier towards the die the electromagnets are selectively de-energized to release the punches which are then movable with and relative to the carrier by means of compression springs 20 surrounding the punches, at a speed such that punching is effected by the kinetic energy of the punches. When the carrier moves away from the die it takes with it the selected punches and presents them to the corresponding electromagnets which by this time have again been energized to retain the punches spaced from the die. Each spring is compressible by the carrier during movement thereof towards the die when the punch is in its normally retained position and is so constructed that the load of the spring when compressed by the carrier is less than the magnetic force by which the punch is held in its retained position. The apparatus is similar to that described in copending Specification 842,439.
GB4095958A 1958-12-18 1958-12-18 Improvements in or relating to punching apparatus Expired GB842440A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4095958A GB842440A (en) 1958-12-18 1958-12-18 Improvements in or relating to punching apparatus
FR784815A FR1234148A (en) 1958-12-18 1959-01-23 Improvements to punching devices for statistical recording cards or tapes
US9058861 US3064881A (en) 1958-12-18 1961-02-17 Punching apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4095958A GB842440A (en) 1958-12-18 1958-12-18 Improvements in or relating to punching apparatus

Publications (1)

Publication Number Publication Date
GB842440A true GB842440A (en) 1960-07-27

Family

ID=10417446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4095958A Expired GB842440A (en) 1958-12-18 1958-12-18 Improvements in or relating to punching apparatus

Country Status (3)

Country Link
US (1) US3064881A (en)
FR (1) FR1234148A (en)
GB (1) GB842440A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724309A (en) * 1971-04-15 1973-04-03 Addmaster Corp Tape punch
US5090284A (en) * 1989-12-19 1992-02-25 Hitachi Seiko, Ltd Mechanisms for driving punch pins in punching apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US808311A (en) * 1905-09-07 1905-12-26 Mills Novelty Co Sheet-perforating machine.
US1333089A (en) * 1919-03-31 1920-03-09 Mintz Julius Check-perforator
GB360094A (en) * 1929-08-28 1931-11-05 Brev Zenith Soc D Expl Des Improvements in machines for cutting, punching and trimming paper or the like
US2813481A (en) * 1954-08-18 1957-11-19 Hughes Aircraft Co Record-impressing apparatus

Also Published As

Publication number Publication date
FR1234148A (en) 1960-10-14
US3064881A (en) 1962-11-20

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