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GB799414A - Improvements in or relating to tubing - Google Patents

Improvements in or relating to tubing

Info

Publication number
GB799414A
GB799414A GB674756A GB674756A GB799414A GB 799414 A GB799414 A GB 799414A GB 674756 A GB674756 A GB 674756A GB 674756 A GB674756 A GB 674756A GB 799414 A GB799414 A GB 799414A
Authority
GB
United Kingdom
Prior art keywords
tubing
ball
length
armstrong
tube
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
GB674756A
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.)
Armstrong Patents Co Ltd
Original Assignee
Armstrong Patents 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 Armstrong Patents Co Ltd filed Critical Armstrong Patents Co Ltd
Priority to GB674756A priority Critical patent/GB799414A/en
Publication of GB799414A publication Critical patent/GB799414A/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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/30—Finishing tubes, e.g. sizing, burnishing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

799,414. Tube expanding. ARMSTRONG PATENTS CO., Ltd., and ARMSTRONG, F. G. G. April 11, 1957 [March 3, 1956], No. 6747/56. Class 83 (4). A method of concurrently straightening and sizing tubing comprises holding a length of said tubing rigidly only at or adjacent to one end thereof and forcing a ball through said length of tubing from said end to the other end thereof. A long length of tubing 3 is held at one end 3b in a collar 6, the other end 3a being free, while a tungsten carbide ball 2, of a diameter slightly larger than the internal diameter of the tubing, is pushed therethrough from the fixed end by a ram 4. The ball 2 may alternatively be forced through the tubing by hydraulic pressure of the order of 1,000 lb. per square inch, the tubing forming part of an oil circulation circuit actuated by a pump. The fixed end of the tubing may be in threaded engagement with its support or be secured therein by expansion. The sized and straightened tube may be cut into lengths.
GB674756A 1956-03-03 1956-03-03 Improvements in or relating to tubing Expired GB799414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB674756A GB799414A (en) 1956-03-03 1956-03-03 Improvements in or relating to tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB674756A GB799414A (en) 1956-03-03 1956-03-03 Improvements in or relating to tubing

Publications (1)

Publication Number Publication Date
GB799414A true GB799414A (en) 1958-08-06

Family

ID=9820053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB674756A Expired GB799414A (en) 1956-03-03 1956-03-03 Improvements in or relating to tubing

Country Status (1)

Country Link
GB (1) GB799414A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062854A (en) * 1973-10-09 1975-05-29
US5524464A (en) * 1993-09-30 1996-06-11 Matsushita Electric Industrial Co., Ltd. Workpiece-bore processing apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062854A (en) * 1973-10-09 1975-05-29
US5524464A (en) * 1993-09-30 1996-06-11 Matsushita Electric Industrial Co., Ltd. Workpiece-bore processing apparatus and method

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