Stretching machine

Details Stretching machine Stretching machine

1977-12-22

1979-02-27

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Means treating shaped work

425383, 264DIG73, 425DIG53, B29D 724

Patent

active

041416791

ABSTRACT:
A stretching machine for plastically straightening an extruded product from an extruding press is disclosed, in which a fixable tail stock and a cylinder operated slidable head stock provide the extruded product with a plastically straightened effect in an automatic operation. Means for variably adjusting the speed of the sliding movement of the head stock and means for automatically changing the sliding direction of the head stock are provided in the stretching machine. The method of operation of the stretching machine includes moving the head stock back toward the tail stock by a small amount after the extruded product has been plastically straightened so that the head stock can be easily disengaged from the extruded product.

REFERENCES:
patent: 2389292 (1945-11-01), Bjorksten
patent: 2961736 (1960-11-01), Kier
patent: 3148410 (1964-09-01), Laurie
patent: 3319294 (1967-05-01), Borsvald et al.
patent: 3762147 (1973-10-01), Wuert
patent: 3904338 (1975-09-01), Straumanis
patent: 3928519 (1975-12-01), Kashiyama et al.
patent: 4017227 (1977-04-01), Schmidt

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