GB465198A - Improvements relating to the mechanical working of substances - Google Patents

Improvements relating to the mechanical working of substances

Info

Publication number
GB465198A
GB465198A GB21433/35A GB2143335A GB465198A GB 465198 A GB465198 A GB 465198A GB 21433/35 A GB21433/35 A GB 21433/35A GB 2143335 A GB2143335 A GB 2143335A GB 465198 A GB465198 A GB 465198A
Authority
GB
United Kingdom
Prior art keywords
pressure
tool
increasing
speed
substances
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
GB21433/35A
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.)
CHARLES HATHAWAY HOWLAND SHEAR
Original Assignee
CHARLES HATHAWAY HOWLAND SHEAR
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 CHARLES HATHAWAY HOWLAND SHEAR filed Critical CHARLES HATHAWAY HOWLAND SHEAR
Publication of GB465198A publication Critical patent/GB465198A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

465,198. Perforating glass, &c. SHEARMAN, C. H. HOWLAND-. July 27, 1935, No. 21433. Convention date, July 27, 1934. [Classes 56 and 124] [Also in Groups XXII and VIII] Substances such as double-ground glass can be punched or perforated when cold by subjecting the material to an intense pressure with the tool in contact with the work, increasing the pressure by a very large pressure applied at a low initial speed and increasing the speed smoothly by infinitely small increments throughout the working stroke. The speed of application of the pressure increases by amounts having a parabolic relation to the working stroke of the tool. In the Figure is shown diagrammatically the operation on the work piece 11, preoperative pressure being applied by clamping means 12, 13 all around the hole to be punched. The tool 14 then applies an intense pressure at low initial speed increasing as stated above. The apparatus employed may be that described in Specification 465,197, [Group XXII]. Specification 465,196, [Group XXII], also is referred to.
GB21433/35A 1934-07-27 1935-07-27 Improvements relating to the mechanical working of substances Expired GB465198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US465198XA 1934-07-27 1934-07-27

Publications (1)

Publication Number Publication Date
GB465198A true GB465198A (en) 1937-04-27

Family

ID=21943874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21433/35A Expired GB465198A (en) 1934-07-27 1935-07-27 Improvements relating to the mechanical working of substances

Country Status (1)

Country Link
GB (1) GB465198A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179884A (en) * 1985-08-07 1987-03-18 Hitachi Ltd Method of punching a laminate for electrical use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179884A (en) * 1985-08-07 1987-03-18 Hitachi Ltd Method of punching a laminate for electrical use

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