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GB189728160A - An Improved Process for Producing Tubes of Varying Internal Diameters, and Tools for same. - Google Patents

An Improved Process for Producing Tubes of Varying Internal Diameters, and Tools for same.

Info

Publication number
GB189728160A
GB189728160A GB189728160DA GB189728160A GB 189728160 A GB189728160 A GB 189728160A GB 189728160D A GB189728160D A GB 189728160DA GB 189728160 A GB189728160 A GB 189728160A
Authority
GB
United Kingdom
Prior art keywords
tube
mandrel
diameter
tubes
tools
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
Inventor
Samuel Earnshaw Howell
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
Application granted granted Critical
Publication of GB189728160A publication Critical patent/GB189728160A/en
Expired legal-status Critical Current

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Abstract

28,160. Howell, S. E. Nov. 30. [Right of Patent relinquished.] Metal tubes.-Relates to means for drawing tubes suitable for cycle frames, which vary in internal diameter, such, for example, as tubes having both ends of greater thickness than the central portion. A mandrel M, having its central portion of the desired diameter to produce the middle of the tube, is provided, the ends of the mandrel having diameters corresponding to the desired additional thickness of metal. The one end t of the tube is closed upon the end m<2> of the mandrel, and freely passed through the die D. As the tube is drawn forward, the thickened portion around the diameter m is produced, followed by the thin portion of the tube L as the diameter M is thrust forward. For releasing the mandrel, the tube is subjected to the action of a reeling-machine, after which it is put through finishing-dies.
GB189728160D 1897-11-30 1897-11-30 An Improved Process for Producing Tubes of Varying Internal Diameters, and Tools for same. Expired GB189728160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB189728160T 1897-11-30

Publications (1)

Publication Number Publication Date
GB189728160A true GB189728160A (en) 1898-11-05

Family

ID=32138175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB189728160D Expired GB189728160A (en) 1897-11-30 1897-11-30 An Improved Process for Producing Tubes of Varying Internal Diameters, and Tools for same.

Country Status (1)

Country Link
GB (1) GB189728160A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133550A (en) * 1976-03-18 1979-01-09 Brown Lawrence G Bicycle and power transmission system
US4454745A (en) * 1980-07-16 1984-06-19 Standard Tube Canada Limited Process for cold-forming a tube having a thick-walled end portion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133550A (en) * 1976-03-18 1979-01-09 Brown Lawrence G Bicycle and power transmission system
US4454745A (en) * 1980-07-16 1984-06-19 Standard Tube Canada Limited Process for cold-forming a tube having a thick-walled end portion

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