US 4,566,566 AGranted

Device for temporarily uncoupling two coaxial rotating elements

AssigneeSociete Alsacienne de Construction de Material Textile

InventorJean-Pierre Vuillet

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Abstract

The invention relates to mechanisms for uncoupling two rotating elements. The device includes a positive clutch sliding on a rotating drive element and subjected to the action of a return spring, an energy storage spring stronger than the return spring and designed to disengage the positive clutch, a cam connected to the drive element and designed to tension the energy storage spring, a pawl capable of keeping the energy storage spring tensioned, and an electromagnet intended to actuate uncoupling and connected to the pawl so as to release the energy storage spring. The device is applicable to temporary uncoupling of two coaxial rotating elements in particular in weaving looms, in order to uncouple the crankshaft from the loom and its main motor from the dobby shaft and its auxiliary control motor.

Claims11

Dependent claims

Device for temporarily uncoupling two coaxial rotating elements, at least one of which is a drive element, by means of a positive clutch which slides on the drive element and which is subjected, in the coupling direction, to the action of a return spring and, in the uncoupling direction, to the effect of an electromagnet, comprising:

(a) an energy storage spring capable of acting on the sliding positive clutch in the direction in which uncoupling is performed, with a force greater than the force of the return spring,
(b) a cam connected to the drive element and designed to tension the said energy storage spring,
(c) a pawl designed to keep the energy storage spring tensioned,
(d) and a mechanical linkage between the pawl and the mobile armature (28,128) of the electromagnet designed to cause the release of the energy storage spring in response to the action of the electromagnet.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 06/648,323Filed 7 Sep 1984
Priority: FR 83 1483519 Sep 1983
Granted: 28 Jan 1986
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

D03C 1/16
Features common to dobbies of different types: arrangements of dobby in relation to loom
F16D 11/10
Actuated by moving a non-rotating part axially: with clutching members movable only axially
F16D 27/118
With an electromagnet not rotating with a clutching member, i.e. without collecting rings: with interengaging jaws or gear teeth
G05G 17/00
Mechanical devices for moving a member after being released