Title: Method and apparatus for forming sheet metal around tubes

Abstract: An improved method for forming sheet metal around straight tubes and an apparatus for performing same is provided. A sheet is clamped along two parallel spaced apart locations by clamps by placing the straight part of the tube between said parallel locations, parallel with the clamps, and adjacent thereto. The clamps are then moved toward each other to thereby bend the sheet around the tube.

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Inventors: van Dijk, Edsger Wybe (Utrecht, NL)

Application Number: 444232
Filing Date: 1974-02-20
Publication_date: 1976-05-04
Assignee:
Primary Class(es): 228/173.1 29/727, 29/890.045, 219/104, 228/15.1
Other Classes:
US Patent Ref:

1377474	May, 1921	Gunther	72/401.
2732615	Jan, 1956	Sandberg	29/157.
3135045	Jun, 1964	Schane	29/475.
3461711	Aug, 1969	Ogilvie	72/383.
3768294	Oct, 1973	VAN Dijk	72/307.
3818568	Jun, 1974	Sennstrom	29/202.
3838590	Oct, 1974	van Dijk	72/307.

Other Refs: 403,899

Jan, 1934	UK

Primary Examiner: Lanham, C. W.
Assistant Examiner: Reiley, III, D. C.
Attorney: Blum, Moscovitz, Friedman & Kaplan