Apparatus for making wood tubing

Details Apparatus for making wood tubing Apparatus for making wood tubing

1995-07-26

1997-07-01

Hail, III, Joseph J.

Manufacturing container or tube from paper; or other manufacturi

Tube making

Convolute winding

493301, B31C 300

Patent

active

056431660

ABSTRACT:
A tube making machine in which flat sheets of material are bent to conform with the outside surface of a cylindrical mandrel defining the interior of the tube, with bending taking place in a loop of a belt which contains the mandrel so that the material to be bend is radially compressed by the belt over a major surface of the mandrel beginning at a first line of contact where the belt first comes in contact with the mandrel and extending circumferentially to a second line of contact where the belt leaves the mandrel as the material reaches the second line of contact it is guided and maintained in contact with the mandrel until it reaches the first line of contact and reenters the space between the belt and the mandrel. The belt loop and the guide surface forms a continuous path over the entire circumference of the mandrel.

REFERENCES:
patent: 171346 (1875-12-01), Broas
patent: 171347 (1875-12-01), Broas
patent: 443601 (1890-12-01), Maccnair
patent: 3528162 (1970-09-01), Sagara
patent: 4121402 (1978-10-01), Cress
patent: 4385480 (1983-05-01), Burchette
patent: 4529021 (1985-07-01), Shrum
patent: 5217440 (1993-06-01), Frassica
patent: 5261985 (1993-11-01), Lin

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