GB140630A - Improvements in punching machines - Google Patents

Improvements in punching machines

Info

Publication number
GB140630A
GB140630A GB1056419A GB1056419A GB140630A GB 140630 A GB140630 A GB 140630A GB 1056419 A GB1056419 A GB 1056419A GB 1056419 A GB1056419 A GB 1056419A GB 140630 A GB140630 A GB 140630A
Authority
GB
United Kingdom
Prior art keywords
slide
links
punch
punching
donald
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
GB1056419A
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.)
Craig & Donald Ltd
ROBERT CRAIG DONALD
Original Assignee
Craig & Donald Ltd
ROBERT CRAIG DONALD
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 Craig & Donald Ltd, ROBERT CRAIG DONALD filed Critical Craig & Donald Ltd
Priority to GB1056419A priority Critical patent/GB140630A/en
Publication of GB140630A publication Critical patent/GB140630A/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
    • B21D28/04—Centering the work; Positioning the tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

140,630. Craig & Donald, and Donald, R. C. April 29, 1919. Punching.-In a punching-machine, the punch slide 1 is lifted by links or the like with stepped slots 3, allowing the punch to be brought close up to the work by hand-operated means such as a lever 13, to facilitate setting the work. The links are so interconnected with the tumbler or gag 8 by stops 9 that, when the gag is turned into its disengaged position, the links are shifted so that the cotter 2 is disengaged from the step 7 in the slot 3, and the slide 1 may be depressed. A spring brake 12 prevents the slide from dropping by its own weight, and adjustable and removable cam-rollers 10 may engage inclines 11 on the links to disengage the parts 2, 7 when the slide 1 has been raised sufficiently. In a modification, Fig. 2, a pin 2a on a reciprocating element 5<a> engages the L-slots 3a in brackets 4<a> attached to the punch slide 1<a>. When the tumbler 8<a> on the slide 1<a> is turned into its inoperative position, it engages a tongue 9<a> and shifts the member 5a into such position that the pin 2a slides in the vertical part of the slot 3<a>. This may also be done by a roller 10<a> engaging an incline 11<a>. A hand-lever 13<a> and brake 12<a> are provided as in the prior modification.
GB1056419A 1919-04-29 1919-04-29 Improvements in punching machines Expired GB140630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1056419A GB140630A (en) 1919-04-29 1919-04-29 Improvements in punching machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1056419A GB140630A (en) 1919-04-29 1919-04-29 Improvements in punching machines

Publications (1)

Publication Number Publication Date
GB140630A true GB140630A (en) 1920-04-01

Family

ID=9970145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1056419A Expired GB140630A (en) 1919-04-29 1919-04-29 Improvements in punching machines

Country Status (1)

Country Link
GB (1) GB140630A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122044A (en) * 1960-10-17 1964-02-25 Jack F Grosh Metal punching apparatus
US3339481A (en) * 1966-02-15 1967-09-05 Richard E Lang Free floating ram members for punch presses and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122044A (en) * 1960-10-17 1964-02-25 Jack F Grosh Metal punching apparatus
US3339481A (en) * 1966-02-15 1967-09-05 Richard E Lang Free floating ram members for punch presses and the like

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