Measuring and testing – Sheet – woven fabric or fiber – Filament
Patent
1979-10-10
1980-09-16
Watkins, Donald
Measuring and testing
Sheet, woven fabric or fiber
Filament
28228, 57 80, 242 356R, G01L 504, D01H 1316, D01H 1322
Patent
active
042222648
ABSTRACT:
Yarn Y.sub.1, Y.sub.2 being supplied to a textile machine is led over a pair of spaced hooks 24 on a support member 22 and is contacted between the hooks by a pivotable member 12 when in an inoperative position (shown in broken lines). In the event of breakage of yarn, the member 12 pivots into an operative position (shown in full lines) and operates a proximity switch 18 to halt operation of the textile machine. In the event of snatching, the increased tension in the yarn lifts the support member 22 off a magnetic block 26, again causing the member 22 to pivot to its operative position and thereby halt operation of the textile machine. After the snatch has passed, a weight 27 which the support member 22 engages after initial lifting thereof returns the support member 22 to its original position under gravity and the yarn forces the pivotable member 12 back into its inoperative position so that operation of the textile machine can recommence.
REFERENCES:
patent: 1939348 (1933-12-01), Higginson
patent: 3063007 (1962-11-01), Baugh et al.
patent: 3380134 (1968-04-01), Anders
patent: 3511448 (1970-05-01), Brouwer et al.
patent: 3739996 (1973-06-01), Matsui et al.
patent: 3880001 (1975-04-01), Hogan
patent: 4075744 (1978-02-01), Mista et al.
Alan Shelton Limited
Brown Charles E.
Watkins Donald
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