The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1978
Filed:
Feb. 11, 1977
Applicant:
Inventors:
Otto Uhlmann, Burgdorf, DT;
Norbert Stephan, Hanover, DT;
Assignee:
Marshall Richards Barcro Limited, Crook, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21C / ;
U.S. Cl.
CPC ...
72291 ;
Abstract
The invention relates to an improved method and apparatus for tube drawing which relates to the use of a floating plug and die arrangement, the necessary draughting tension in the tube being drawn being generated by a rotatable tube block around which the tubing downstream of the die is wrapped. The invention proposes to mount a tube guide upstream of the die in such wise that the relative spacing between the guide and the die can be a minimum during threading-up of the die but increased during drawing.