Title: Apparatus for shaping the end of a hollow tube

Abstract: A forming tool comprising a rigid frame, clamping jaws on the frame for clamping a hollow tube with the end to be formed in a position of alignment with a forming head mounted on the frame for linear movement toward the end of the clamped tube and for rotation about the axis of the tube, said clamping jaws containing an opening for receiving the forming head as it is advanced into engagement with the tube, and said forming head containing a fustrum conical forming cavity for engagement with the end of the tube within which the end of the tube is wholly formed. A pilot is provided within the forming cavity for maintaining the concentricity of the tube and forming cavity during the forming operation. The entire surface of the forming head is coated with a non-electrolytically applied surface coating of nickel.

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Inventors: Crane, Warren Joseph (Natick, MA, US)
Collins, Russell Bancroft (Natick, MA, US)
Crane, Charles Warren (Natick, MA, US)

Application Number: 629557
Filing Date: 1975-11-06
Publication_date: 1977-09-13
Assignee:
Primary Class(es): 72/125 72/317
Other Classes:
US Patent Ref:

1795358	Mar, 1931	Arndt	72/317.
2117543	May, 1938	Corrigan	72/317.
2242831	May, 1941	McIntosh	72/317.
2430168	Nov, 1947	Graham	72/317.
3575033	Mar, 1969	Meye, Jr.	72/317.

Other Refs:
Primary Examiner: Simpson, Othell M.
Assistant Examiner: Culver, Horace M.
Attorney: Dike, Bronstein, Roberts, Cushman & Pfund