Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1978-01-24
1979-02-20
Simpson, Othell M.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29 33T, 29727, 72137, 72217, 140 922, B21D 5302, B23P 1526
Patent
active
041399323
ABSTRACT:
A method for forming cooling coils of successive layers of rectangular configuration, in which the front end of an elongated tube is threaded between rolls of a straightening apparatus and clamped onto the periphery of a rectangular table, whereafter the table is rotated about a central axis while the incoming tube shifted in direction of this axis, and while the tube upstream of the table is held in taught condition by the straightening apparatus so that the tube is wound into a coil of rectangular configuration about the table. After a coil of predetermined length has thus been wound, the table is stopped, the tube cut between the straightening apparatus and the table and the cut rear end of the tube is also clamped to the table. Thereafter, the corner portions of all loops of the coil are simultaneously formed by stamping into outwardly bulging portions to thereby stretch the tube sections between the corner portions beyond the elastic limit of the tube material; and an apparatus for carrying out the aforementioned steps in automatic succession.
REFERENCES:
patent: 1802161 (1931-04-01), Summers
patent: 2510183 (1950-06-01), Luce
patent: 2514830 (1950-07-01), Bath
patent: 2683474 (1954-07-01), Langenberg
patent: 2697868 (1954-12-01), Arant
Ehlen Anton
Hanert Eckehard
Benteler-Werke AG
Bilinsky Z. R.
Simpson Othell M.
Striker Michael J.
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