Process and apparatus for tensioning an endless thin metal shell

Details Process and apparatus for tensioning an endless thin metal shell Process and apparatus for tensioning an endless thin metal shell

1986-04-15

1988-05-17

Jordan, M.

Metal fusion bonding

Process

With removing or reshaping of filler material or flash after...

228 47, 228212, 72292, B23K 3100

Patent

active

047445033

ABSTRACT:
The process comprises unrolling a metal band onto the circumference of a drum, pressing the metal band continuously onto the drum until the metal band surrounds the drum and the ends of the metal band overlap, clamping the metal band to the drum with a plurality of clamping members or a clamping belt, heating the metal band and drum, and in this condition cutting the metal band to length for welding, and working, welding and finishing the ends and edges of the metal band to form a smooth surface on the circumference of the drum. The apparatus for performing the process of the invention comprises a pivotal support for mounting the drum rotatably on a horizontal axis, a groove in the circumference of the drum at the position where the welding occurs, a rail, preferably copper, with a recess for release of a cutting tool and for a weld seam held in the groove, a plurality of pairs of clamping members mounted on a shoulder rim of the drum attachable by screws to the band, and a clamping mechanism connected between each of the clamping members of the pairs of clamping members to provide longitudinal tension to the metal band. As an alternative to the clamping members and the clamping mechanism the apparatus is provided with a clamping belt and a clamping frame to clamp the metal band to the drum.

REFERENCES:
patent: 148385 (1874-03-01), Schon
patent: 791693 (1905-06-01), House
patent: 890587 (1908-06-01), Markham
patent: 3732614 (1973-05-01), Boutell
patent: 3978704 (1976-09-01), Fridman et al.
patent: 4121747 (1978-10-01), McFatter
patent: 4576327 (1986-03-01), Kahilathi et al.

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