Work holders – Plural holders to hold workpieces relative to each other – Workpieces parallel to each other
Patent
1979-11-28
1981-02-24
Watson, Robert C.
Work holders
Plural holders to hold workpieces relative to each other
Workpieces parallel to each other
29766, 269152, 269237, 269254CS, 269256, 269318, 269319, B23P 1904
Patent
active
042523036
ABSTRACT:
A self-alignable holder holds a row of coupling elements mounted on a slide fastener stringer tape in alignment with a slot cutter regardless of the size of the coupling elements. The holder includes a base having a slot receptive of the stringer tape, a pair of parallel holding plates movably disposed on the base for laterally sandwiching the row of coupling elements therebetween, a pair of parallel-motion links pivotally connecting the holding plates together, and a pair of supports mounted on the base and pivotally supporting the links so that the gripping edges of the holding plates are equidistant from the longitudinal axis of the slot. Spring means in the base urge the holding plates laterally toward each other for holding the row of coupling elements in longitudinal alignment with the slot axis resiliently with equalized lateral forces.
REFERENCES:
patent: 416737 (1889-12-01), Nathan
patent: 1110683 (1914-09-01), Goodwin
patent: 3815208 (1974-06-01), Kawakami
patent: 3844014 (1974-10-01), Takahushi et al.
patent: 3945103 (1976-03-01), Fujisaki et al.
patent: 3991991 (1976-11-01), Hammer
Watson Robert C.
Yoshida Kogyo K.K.
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