GB221215A - Improved process and apparatus for the production of double-walled tubes - Google Patents

Improved process and apparatus for the production of double-walled tubes

Info

Publication number
GB221215A
GB221215A GB2028824A GB2028824A GB221215A GB 221215 A GB221215 A GB 221215A GB 2028824 A GB2028824 A GB 2028824A GB 2028824 A GB2028824 A GB 2028824A GB 221215 A GB221215 A GB 221215A
Authority
GB
United Kingdom
Prior art keywords
double
walled tubes
production
improved process
extrusion
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
GB2028824A
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 GB2028824A priority Critical patent/GB221215A/en
Publication of GB221215A publication Critical patent/GB221215A/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
    • B21C25/00—Profiling tools for metal extruding

Abstract

221,215. BarmÚ, F. Aug. 27, 1924. Extrusion machines.-Hollow-walled tubes 2, Fig. 1, of rubber or other material are made by extrusion. The tongues d<1>, Fig. 2, to form the spaces 4 are carried by the plug h for forming the central hole, and this is so shaped that the material moves in an inward direction, as shown by the arrow, while being forced towards the die i.
GB2028824A 1924-08-27 1924-08-27 Improved process and apparatus for the production of double-walled tubes Expired GB221215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2028824A GB221215A (en) 1924-08-27 1924-08-27 Improved process and apparatus for the production of double-walled tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2028824A GB221215A (en) 1924-08-27 1924-08-27 Improved process and apparatus for the production of double-walled tubes

Publications (1)

Publication Number Publication Date
GB221215A true GB221215A (en) 1925-11-27

Family

ID=10143492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2028824A Expired GB221215A (en) 1924-08-27 1924-08-27 Improved process and apparatus for the production of double-walled tubes

Country Status (1)

Country Link
GB (1) GB221215A (en)

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