GB1129812A - Improvements in and relating to tools for perforating machines - Google Patents

Improvements in and relating to tools for perforating machines

Info

Publication number
GB1129812A
GB1129812A GB3985664A GB3985664A GB1129812A GB 1129812 A GB1129812 A GB 1129812A GB 3985664 A GB3985664 A GB 3985664A GB 3985664 A GB3985664 A GB 3985664A GB 1129812 A GB1129812 A GB 1129812A
Authority
GB
United Kingdom
Prior art keywords
roll
projections
perforating
tool
contact
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
GB3985664A
Inventor
Brian Trevena Coulton
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.)
Harrison and Sons Ltd
Original Assignee
Harrison and Sons 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 Harrison and Sons Ltd filed Critical Harrison and Sons Ltd
Priority to GB3985664A priority Critical patent/GB1129812A/en
Publication of GB1129812A publication Critical patent/GB1129812A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/40—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools shearing tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

1,129,812. Contact printing apparatus. HARRISON & SONS Ltd. Sept. 27, 1965 [Sept. 30, 1964], No.39856/64. Heading G2A. [Also in Divisions B2, B3, B4 and C7] A method of making a perforating tool comprises removing metal from the surface of a tool blank, by a process such as etching, engraving, or spark erosion, to form projections and grinding the projections to form sharp perforation-defining edges. The tool may be a flat plate or a roll and is for use in a machine for perforating or forming an intaglio effect on sheet material such as paper in which material in contact with the projections is perforated by rubbing contact, e.g. of a cylinder of cutting knives rotating at high speed, with the other surface of the material. In the forming of pins, for perforating sheets of stamps, on a roll 4 the roll is cleaned and prepared for electrolytic etching. Photosensitive resist is distributed over the roll whilst it is rotated by means of a nozzle and brush. Alternatively the roll is coated by spraying, ring coating or whirling. After the resist has been hardened the roll covered with a negative 32 of the required pattern of projections is rotated once in front of a slit 33 through which light passes from arc lamps 31.
GB3985664A 1964-09-30 1964-09-30 Improvements in and relating to tools for perforating machines Expired GB1129812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3985664A GB1129812A (en) 1964-09-30 1964-09-30 Improvements in and relating to tools for perforating machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3985664A GB1129812A (en) 1964-09-30 1964-09-30 Improvements in and relating to tools for perforating machines

Publications (1)

Publication Number Publication Date
GB1129812A true GB1129812A (en) 1968-10-09

Family

ID=10411864

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3985664A Expired GB1129812A (en) 1964-09-30 1964-09-30 Improvements in and relating to tools for perforating machines

Country Status (1)

Country Link
GB (1) GB1129812A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396899A2 (en) * 1989-04-14 1990-11-14 Bobst S.A. Cylinder-tool for a band- or plate-like material working rotative machine and realisation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396899A2 (en) * 1989-04-14 1990-11-14 Bobst S.A. Cylinder-tool for a band- or plate-like material working rotative machine and realisation method
EP0396899A3 (en) * 1989-04-14 1991-01-23 Bobst S.A. Cylinder-tool for a band- or plate-like material working rotative machine and realisation method

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