GB567753A - Improvements relating to the bending of metal pipes - Google Patents

Improvements relating to the bending of metal pipes

Info

Publication number
GB567753A
GB567753A GB1253242A GB1253242A GB567753A GB 567753 A GB567753 A GB 567753A GB 1253242 A GB1253242 A GB 1253242A GB 1253242 A GB1253242 A GB 1253242A GB 567753 A GB567753 A GB 567753A
Authority
GB
United Kingdom
Prior art keywords
pipe
valve
accumulator
bending
operated
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
GB1253242A
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 GB1253242A priority Critical patent/GB567753A/en
Publication of GB567753A publication Critical patent/GB567753A/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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/16—Auxiliary equipment, e.g. machines for filling tubes with sand

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

567,753. Angular bending. DRAPER, F. C. Sept. 4, 1942, No. 12532. [Class 83 (iv)] [Also in Group XXIX] Fillings.-To avoid variations in the pressure of the liquid loading in a pipe T during bending thereof, this is connected by tubing to an accumulator AC having a relatively large volume. A valve HV is operated, at first, to connect the pipe to an oil supply tank OT, via tubing 1 and high-pressure hose PH, to fill it. The valve is then shut, a closure N2 applied to the upper end of the pipe, the valve moved to connect the pipe to the accumulator via tubing 4 and the bend made. The valve is again closed and the bent pipe T disconnected and emptied into a sump SU. Oil pressure is maintained in the accumulator by a pump OP connected via a filter OF to the tank OT and driven by a motor M which is controlled by a start and stop hand-operated switch 11 and a stop hand-operated switch 13. The weighted lever L of the accumulator may be connected to automatic start and stop switches, or operate a slide s, which render the pump ineffective when the lever reaches a certain height. The device may be used when bending a thin walled pipe of brass or of the alloy sold under, the Registered Trade Mark " Tungum " &c. around a forming die, e.g. as described in Specification 567,743, or by a die moving in a straight path. The valve HV is operated by a handle HL, shown in its neutral position in Fig. 4, which can be moved to the right to admit low pressure oil from the tube 1 past ball LP to a chamber C connected to the hose PH or to the left to admit high pressure oil from the tube 4 to the same chamber by pushing a ball HP off its seat by a pin hp and strap S. Specification 505,866 also is referred to.
GB1253242A 1942-09-04 1942-09-04 Improvements relating to the bending of metal pipes Expired GB567753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1253242A GB567753A (en) 1942-09-04 1942-09-04 Improvements relating to the bending of metal pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1253242A GB567753A (en) 1942-09-04 1942-09-04 Improvements relating to the bending of metal pipes

Publications (1)

Publication Number Publication Date
GB567753A true GB567753A (en) 1945-03-01

Family

ID=10006340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1253242A Expired GB567753A (en) 1942-09-04 1942-09-04 Improvements relating to the bending of metal pipes

Country Status (1)

Country Link
GB (1) GB567753A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777500A (en) * 1955-03-04 1957-01-15 Flexonics Corp Tube bending apparatus and method
DE1046448B (en) * 1956-08-06 1958-12-11 Flexonics Corp Method and device for bending pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777500A (en) * 1955-03-04 1957-01-15 Flexonics Corp Tube bending apparatus and method
DE1046448B (en) * 1956-08-06 1958-12-11 Flexonics Corp Method and device for bending pipes

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