GB674222A - An improved method and apparatus for making screws - Google Patents

An improved method and apparatus for making screws

Info

Publication number
GB674222A
GB674222A GB589448A GB589448A GB674222A GB 674222 A GB674222 A GB 674222A GB 589448 A GB589448 A GB 589448A GB 589448 A GB589448 A GB 589448A GB 674222 A GB674222 A GB 674222A
Authority
GB
United Kingdom
Prior art keywords
head
screw
die
reduced
punch
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
GB589448A
Other languages
English (en)
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.)
NEW PROCESS SCREW CORP
Original Assignee
NEW PROCESS SCREW CORP
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
Priority claimed from US480018A external-priority patent/US2373948A/en
Application filed by NEW PROCESS SCREW CORP filed Critical NEW PROCESS SCREW CORP
Publication of GB674222A publication Critical patent/GB674222A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
GB589448A 1943-03-22 1948-02-26 An improved method and apparatus for making screws Expired GB674222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480018A US2373948A (en) 1939-08-17 1943-03-22 Method of making diamond headed screw blanks for double threaded screws and header dies for use therewith

Publications (1)

Publication Number Publication Date
GB674222A true GB674222A (en) 1952-06-18

Family

ID=23906340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB589448A Expired GB674222A (en) 1943-03-22 1948-02-26 An improved method and apparatus for making screws

Country Status (3)

Country Link
BE (1) BE476057A (es)
FR (1) FR951314A (es)
GB (1) GB674222A (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1150859B (de) * 1958-10-30 1963-06-27 Nat Machinery Co Doppeldruckpresse zum Herstellen von Kopfbolzen

Also Published As

Publication number Publication date
BE476057A (es)
FR951314A (fr) 1949-10-21

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