GB705626A - Method and apparatus for making rectifier cells - Google Patents

Method and apparatus for making rectifier cells

Info

Publication number
GB705626A
GB705626A GB5484/52A GB548452A GB705626A GB 705626 A GB705626 A GB 705626A GB 5484/52 A GB5484/52 A GB 5484/52A GB 548452 A GB548452 A GB 548452A GB 705626 A GB705626 A GB 705626A
Authority
GB
United Kingdom
Prior art keywords
cutting edge
punch
degrees
approximately
sheet
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
GB5484/52A
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 Resistance Co
Original Assignee
International Resistance Co
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 Resistance Co filed Critical International Resistance Co
Publication of GB705626A publication Critical patent/GB705626A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

705,626. Drilling ; punching. INTERNATIONAL RESISTANCE CO. March 3, 1952 [March 8, 1951], No. 5484/52. Classes 83 (3) and 83 (4). [Also in Group XXXVI] A tool for cutting discs from a sheet of laminated metals has an eccentric cutting edge so that in drilling an island is made in the sheet which may be completely cut out, or finally severed from the sheet by a punching operation. Drills and cutters.-The drilling tool comprises a cylindrical steel shank 44, Figs. 6, 7, tipped with a hard metal carbide insert 46. The cutting edge 47 slopes outwardly at a small angle, approximately 2 degrees ; the outside edge 50 also slopes outwardly at approximately 2 degrees, and the inside edge 51 slopes at approximately 60 degrees. The tip is machined to provide adequate top rake, side relief and bottom clearance. Punches.-The punching operation is performed with a female die 32, Fig. 5, with centering lips 34, and a punch 40, which punches the discs 22 into a tubular container 31 located by guide ribs 38. In a modification, Fig. 12, the die 132 is provided with an end button 58 having a flat surface 59 which, with a central bore 36, defines a circular cutting edge 134, slightly larger than the bore diameter of the disc 22, the punch 140 having a slightly smaller-diameter cutting edge 61. To minimize strain other than in the cutting plane, the end face 62 of punch 140 is recessed.
GB5484/52A 1951-03-08 1952-03-03 Method and apparatus for making rectifier cells Expired GB705626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US705626XA 1951-03-08 1951-03-08

Publications (1)

Publication Number Publication Date
GB705626A true GB705626A (en) 1954-03-17

Family

ID=22096048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5484/52A Expired GB705626A (en) 1951-03-08 1952-03-03 Method and apparatus for making rectifier cells

Country Status (1)

Country Link
GB (1) GB705626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784479A (en) * 1952-03-12 1957-03-12 Gen Electric Method of manufacturing rectifier plates in multiple

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2784479A (en) * 1952-03-12 1957-03-12 Gen Electric Method of manufacturing rectifier plates in multiple

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