Rotational dobby

Textiles: weaving – Warp manipulation – Shedding

Patent

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Details

74570, 192 28, D03C 100, G05G 100, F16D 1106

Patent

active

047306416

ABSTRACT:
A driving coupling includes two pawls which are supported pivotally on an eccentric ring and which in a patternlike manner engage a longitudinal groove in the drive shaft. Each of two plates of a toggle-lever joint engages an arm extension of a respective pawl, the swivel axle of the toggle-lever joint being guided in a control groove of a swinging switching arm. When the pawls are engaged with a drive shaft groove, the toggle-lever joint is in an extended position which locks the pawls in position. For unlocking the pawls, the switching arm moves the toggle-lever joint into a catch opening between two guide rails. The pawls swing out and the drive shaft rotates without carrying along the pawls and the eccentric ring.

REFERENCES:
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patent: 3016252 (1962-01-01), Mitchell
patent: 3180366 (1965-04-01), Hoenig
patent: 3568724 (1971-03-01), Xaus
patent: 3726323 (1973-04-01), Kleiner
patent: 3812730 (1974-05-01), Yanagawa
patent: 4354531 (1982-10-01), Surkamp et al.
patent: 4362188 (1982-12-01), Surkamp et al.
patent: 4493346 (1985-01-01), Speich
patent: 4542769 (1985-09-01), Julich
patent: 4572013 (1986-02-01), Kasukave
patent: 4597417 (1986-07-01), Schwarz
patent: 4614211 (1986-09-01), Mettler

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