Textiles: braiding – netting – and lace making – Apparatus – Shuttles – carriages and/or threading and loading or...
Patent
1978-04-18
1979-07-24
Petrakes, John
Textiles: braiding, netting, and lace making
Apparatus
Shuttles, carriages and/or threading and loading or...
87 22, 242156, D04C 314
Patent
active
041619030
ABSTRACT:
Filament is unwound under tension from a bobbin; a brake controls the speed of rotation of the bobbin; the brake includes one clutch plate that rotates with the bobbin and another clutch plate that is hydraulically urged against the first clutch plate; a self-container hydraulic fluid filled, hydraulic system communicates with the latter clutch plate and also with a piston; biasing means urge the piston to increase the pressure on the latter clutch plate which brakes the bobbin and increases filament tension; as the filament is drawn away from the bobbin under greater tension, the piston is urged, against the force of biasing means, to reduce the pressure on the latter clutch plate which releases the brake and decreases filament tension.
REFERENCES:
patent: 2576936 (1951-12-01), Heffelfinger
patent: 3054572 (1962-09-01), Williams et al.
patent: 3160238 (1964-12-01), Meyer-Jagenberg
patent: 3362282 (1968-01-01), Karg
patent: 3425315 (1969-02-01), Kaufmann
patent: 3757904 (1973-09-01), Deyoung
patent: 3787001 (1974-01-01), Henry
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