GB800798A - Improvements in or relating to gilled tubes and the manufacture thereof - Google Patents

Improvements in or relating to gilled tubes and the manufacture thereof

Info

Publication number
GB800798A
GB800798A GB317256A GB317256A GB800798A GB 800798 A GB800798 A GB 800798A GB 317256 A GB317256 A GB 317256A GB 317256 A GB317256 A GB 317256A GB 800798 A GB800798 A GB 800798A
Authority
GB
United Kingdom
Prior art keywords
tube
roller
rollers
strip
gill
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
GB317256A
Inventor
Ronald Albert Elliott
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.)
SPIRO GILLS Ltd
Original Assignee
SPIRO GILLS 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 SPIRO GILLS Ltd filed Critical SPIRO GILLS Ltd
Priority to GB317256A priority Critical patent/GB800798A/en
Publication of GB800798A publication Critical patent/GB800798A/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
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes

Abstract

800,798. Making gilled tubes; angular bending; coiling; welding by pressure. SPIRO GILLS, Ltd. March 21, 1957 [Feb. 1, 1956], No. 3172/56. Classes 83 (2) and 83 (4). [Also in Group XIII] A gilled tube comprises a tube with a spirally wound gill element thereon with a flange adjacent the tube which is attached to the tube by spot welding. Steel strip 14 is fed through rollers 15, 16, which form it into strip 11 of L- shaped cross-section, on to and by a rotated tube 10. The tube 10 is engaged on its underside by roller electrodes 19, 20 and on its upper side by a roller electrode 21 bearing on the flange of the gill strip 11. The rollers are urged against the tube 10 by a pneumatic cylinder means 36 mounted on a vertically slidable frame 27 carrying the rollers 19, 20, the piston of the cylinder being connected to the upper roller 21, vertically slidable relative to the frame 27. The roller electrode supporting means and the strip forming means is moved axially of the tube 10, e.g. by a feed-screw, as the tube is rotated, although transformers may be carried on a separate fixed unit. The roller electrodes may be watercooled. The roller electrodes 19, 20 are connected to one side of a transformer secondary winding 31 and the roller 21 to the other, a timing device in the circuit produces an interruption of current so that the gill is stitchwelded on to the tube. A roller electrode 42, in the form of one or more rollers, connected to one side of the secondary winding of a heating transformer 32, the other side of which is connected to the rollers 19, 20, heats the strip to facilitate forming and winding.
GB317256A 1956-02-01 1956-02-01 Improvements in or relating to gilled tubes and the manufacture thereof Expired GB800798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB317256A GB800798A (en) 1956-02-01 1956-02-01 Improvements in or relating to gilled tubes and the manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB317256A GB800798A (en) 1956-02-01 1956-02-01 Improvements in or relating to gilled tubes and the manufacture thereof

Publications (1)

Publication Number Publication Date
GB800798A true GB800798A (en) 1958-09-03

Family

ID=9753291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB317256A Expired GB800798A (en) 1956-02-01 1956-02-01 Improvements in or relating to gilled tubes and the manufacture thereof

Country Status (1)

Country Link
GB (1) GB800798A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11577292B2 (en) * 2017-01-06 2023-02-14 Keystone Tower Systems, Inc. Tube stiffening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11577292B2 (en) * 2017-01-06 2023-02-14 Keystone Tower Systems, Inc. Tube stiffening

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