Material or article handling – Stock pulling or pushing – With additional diverse motion of stock
Patent
1987-07-06
1988-06-28
Spar, Robert J.
Material or article handling
Stock pulling or pushing
With additional diverse motion of stock
414431, 414745, 414757, 414910, 209545, 269 481, B23Q 522
Patent
active
047535636
ABSTRACT:
Apparatus for positioning the seam of a welded tube comprises a plunger rod of a diameter less than the tube having a first longitudinal axis supported and journaled upon its first axis for reciprocal and rotational movements. A radial knife edge projects from the plunger which is adapted for advancing on its axis into a welded tube having a seam rotatably supported upon the first axis. Successive rotation of the plunger causes the knife edge to operatively engage the seam and rotate the tube a predetermined angle, there being preset angular final seam position for the tube, the knife edge having a preset initial position clockwise ahead of the desired seam position. Rotation of the knife edge is counterclockwise. The method of positioning the seam of a welded tube comprises the steps of rotatively supporting and slidably mounting a plunger upon a first axis spaced from a tube having a seam rotatively supported upon said axis and mounting an elongated knife edge upon the plunger to project radially outward thereof. Further steps include advancing the plunger into the tube and successively rotating the plunger and knife edge with the knife edge operatively engaging the seam and rotating the tube a predetermined angle.
REFERENCES:
patent: 2626450 (1953-01-01), Gridley
patent: 2781905 (1957-02-01), Phillips
patent: 2979196 (1961-04-01), Harmon
patent: 4184798 (1980-01-01), Laughlin
patent: 4640157 (1987-02-01), Geiser et al.
Doyle Jennifer
McInerney Incorporated
Spar Robert J.
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