GB493998A - An improved method of reducing the diameter of hollow metal articles, such as for instance tubes - Google Patents

An improved method of reducing the diameter of hollow metal articles, such as for instance tubes

Info

Publication number
GB493998A
GB493998A GB561238A GB561238A GB493998A GB 493998 A GB493998 A GB 493998A GB 561238 A GB561238 A GB 561238A GB 561238 A GB561238 A GB 561238A GB 493998 A GB493998 A GB 493998A
Authority
GB
United Kingdom
Prior art keywords
reducing
tube
diameter
advancing
die
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
GB561238A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB561238A priority Critical patent/GB493998A/en
Publication of GB493998A publication Critical patent/GB493998A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B21C1/26—Push-bench drawing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Forging (AREA)

Abstract

493,998. Drawing tubes. SINGER, F. Feb. 22, 1938, No. 5612. [Class 83 (iv)] A tube a is reduced in diameter without reducing the wall thickness by supporting it adjacent on end by gripping means 2, advancing a reducing die 1 over said end to reduce a relatively short length in a direction toward the unreduced portion, retracting the die and advancing the tube to provide an unreduced short length ahead of the supported portion, and repeating the steps to reduce progressively successive short lengths of the tube. The frictional grip of the die on the tube may be used for advancing the tube. Fig. 3 shows the position of the parts after the first reducing stage is completed.
GB561238A 1938-02-22 1938-02-22 An improved method of reducing the diameter of hollow metal articles, such as for instance tubes Expired GB493998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB561238A GB493998A (en) 1938-02-22 1938-02-22 An improved method of reducing the diameter of hollow metal articles, such as for instance tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB561238A GB493998A (en) 1938-02-22 1938-02-22 An improved method of reducing the diameter of hollow metal articles, such as for instance tubes

Publications (1)

Publication Number Publication Date
GB493998A true GB493998A (en) 1938-10-18

Family

ID=9799352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB561238A Expired GB493998A (en) 1938-02-22 1938-02-22 An improved method of reducing the diameter of hollow metal articles, such as for instance tubes

Country Status (1)

Country Link
GB (1) GB493998A (en)

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