Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Rod or tubular preform
Patent
1976-03-01
1977-10-04
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Rod or tubular preform
425397, 425814, B29D 500
Patent
active
040521451
ABSTRACT:
A method and apparatus for manufacturing a coiled slide-fastener filament, according to which an initially straight portion of the filament is deformed into a filament portion of substantially V-shaped configuration having a tooth formed at the crest where the legs of the V-shaped filament portion intersect, with these legs then being pushed together into side-by-side relation while being advanced into a gap between a pair of teeth of a gear-setting wheel. The apparatus which performs the latter operations includes deforming and pusher members which are substantially perpendicular to each other and situated in a radial plane containing an axis of the gear setting wheel, the deforming member being moved substantially parallel to the latter axis adjacent a periphery of the wheel through one plane containing one side surface of the wheel toward a plane containing the other side surface of the wheel until an end of the deforming member is situated adjacent the latter plane, with the initially straight filament portion being deformed by the deforming member while the latter is moved in this way, and with the tooth being formed against a stop surface engaged by the deformed filament portion while it is deformed by the deforming member. Simultaneous with retraction of the deforming member the pusher member is advanced radially toward the axis of the gear setting wheel to place the legs of the V-shaped deformed filament portion in side-by-side relation while displacing these legs into a tooth gap of the gear setting wheel.
REFERENCES:
patent: 3255288 (1966-06-01), Steingouebner
patent: 3538582 (1970-11-01), Perlman
patent: 3541638 (1970-11-01), Porepp
patent: 3672805 (1972-06-01), Porepp
patent: 3787164 (1964-01-01), Jakob
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