GB583949A - Improved press tools for the cutting of articles out of sheet metal or plywood - Google Patents

Improved press tools for the cutting of articles out of sheet metal or plywood

Info

Publication number
GB583949A
GB583949A GB1068644A GB1068644A GB583949A GB 583949 A GB583949 A GB 583949A GB 1068644 A GB1068644 A GB 1068644A GB 1068644 A GB1068644 A GB 1068644A GB 583949 A GB583949 A GB 583949A
Authority
GB
United Kingdom
Prior art keywords
base
rule
plywood
thickness
reduced
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
GB1068644A
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.)
WILLIAM CROSLAND Ltd
Metropolitan Vickers Electrical Co Ltd
Original Assignee
WILLIAM CROSLAND Ltd
Metropolitan Vickers Electrical Co 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 WILLIAM CROSLAND Ltd, Metropolitan Vickers Electrical Co Ltd filed Critical WILLIAM CROSLAND Ltd
Priority to GB1068644A priority Critical patent/GB583949A/en
Publication of GB583949A publication Critical patent/GB583949A/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
    • B21D28/14—Dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

583,949. Cutting-out presses. WARBURTON, C. L., SMITH, W. F., WILSHAW, F. H., METROPOLITAN-VICKERS ELECTRICAL CO., Ltd., and CROSLAND, Ltd., W. June 2, 1944, No. 10686. [Class 31 (i)] [Also in Group XXII] Upper and lower dies for punching out blanks from sheet metal or plywood, each comprises a base of hardened plywood of specific gravity greater than unity having a slot into which is forced a steel rule or strip so that the rule in the lower die will pass into the rule in the upper die with a small clearance, the part of the base of the lower die which bounds the rule being reduced in thickness whilst the part of the base of the upper die which is bounded by the rule is correspondingly reduced in thickness. The base members are preferably of "hard" plywood bonded with a synthetic resin and having a specific gravity of the order of 1.4. The base 1 has a slot sawn in it and into the slot is inserted a length of steel rule or strip 3 having a square shearing edge. That part of the base surrounding the rule is reduced in thickness and a rubber pad 9 is placed around the rule to act as an ejector. Similarly the base 2 of the co-operating die is slotted for the insertion of a steel rule 4,. the part of the base within the rule being reduced in thickness and a rubber ejector pad 10 being inserted. If the blank is required to be holed, a punch 5 is incorporated in the base of the upper die to co-operate with a flanged steel ferrule 6 in the base of the lower die. The bases may have guide bushes 7 adapted to receive pins to ensure the correct registering of the dies in a press and countersunk holes 8 to enable them to be screwed to the bed plae of the press. Instead of having the rubber pads 9 and 10 the bases may be bored to receive springs. Specification 579,523 is referred to.
GB1068644A 1944-06-02 1944-06-02 Improved press tools for the cutting of articles out of sheet metal or plywood Expired GB583949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1068644A GB583949A (en) 1944-06-02 1944-06-02 Improved press tools for the cutting of articles out of sheet metal or plywood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1068644A GB583949A (en) 1944-06-02 1944-06-02 Improved press tools for the cutting of articles out of sheet metal or plywood

Publications (1)

Publication Number Publication Date
GB583949A true GB583949A (en) 1947-01-03

Family

ID=9972414

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1068644A Expired GB583949A (en) 1944-06-02 1944-06-02 Improved press tools for the cutting of articles out of sheet metal or plywood

Country Status (1)

Country Link
GB (1) GB583949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879843A (en) * 1954-04-30 1959-03-31 Malew Eng Ltd Press tool construction
US2974704A (en) * 1955-09-14 1961-03-14 Templet Ind Inc Cutting and forming die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879843A (en) * 1954-04-30 1959-03-31 Malew Eng Ltd Press tool construction
US2974704A (en) * 1955-09-14 1961-03-14 Templet Ind Inc Cutting and forming die

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