US 5,697,404 AGranted

Rotary to reciprocating drive for a magnetic shuttle carriage

OwnerChuan-tien Cheng, Wu-chen Chuanginventors

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Abstract

An apparatus for driving a carriage of a shuttle in a weaving loom consists of a housing, a driven shaft rotatably mounted in the housing and a driving wheel rotatably mounted in the housing and having an axis of rotation orthogonal to that of the driven shaft. A spool is fixedly mounted on the driven shaft. A wire has an end fixedly attached on the spool and another end connected to a carriage. A plurality of rollers are attached on a circumferential periphery of the driven shaft. One of the rollers is engaged with one of a plurality of guiding channels defined on a circumferential periphery of the driving wheel. The guiding channels are so configured that when the driving wheel rotates, the driven shaft can repeatedly have the following modes of movement: firstly remaining in a static state, rotating and accelerating in a first direction, decelerating, staying in another static state, rotating and accelerating in a second direction, decelerating, and finally returning to the first static state.

Claims11

Dependent claims

An apparatus for driving a carriage of a shuffle in a weaving loom, comprising:

a housing;
a driven shaft rotatably mounted in the housing, comprising a plurality of rollers attached on a circumferential periphery thereof and a spool fixedly connected therewith;
a driving wheel rotatably mounted in the housing, defining an axis of rotation orthogonal to an axis of rotation of the driven shaft and guiding channel means on a circumferential periphery of said driving wheel, said guiding channel means positioned to slidably engage with one of the rollers, said guiding channel means configured so that for one revolution of the driving wheel the spool first remains static, then is accelerated in a first rotational direction to reach a first maximum speed, then decelerated in said first direction to said static state, then again accelerated in a second rotational direction to reach a second maximum speed, and finally decelerated in said second rotational direction to return to said static state;
a motor for generating a unidirectional rotation of the driving wheel;
and
a wire having a first end fixedly attached with the spool and a second end adapted to be connected to a carriage.

3 more elements

Dependencies are inferred from the claim text.