US1398660A - Loom-shuttle - Google Patents

Description

T. H. WHALLEY. .LOOM SHUTTLE. APPLICATIDN FILED JUNE 16, 1920- 1,398,660.

Patented Nov. 29, 1921.

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UNITED ST Pare LOOM SHUTTLE Specification of Letters Patent.

Patented Nov. 29, 1921.

Application filed June 16, 1920. Serial No. 389,392.

T 0 all whom it may concern Be it known that 'I, THOMAS HENRY l/VHALLEY, residin at 4L60 Vhalley New Road, Blackburn, England, have invented certain new and useful Improvements in Loom-Shuttles; and I do hereby declare he following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to loom shuttles and primarily to hand threading shuttles which are provided with a peg upon which a cop is placed the chief object being to produce a shuttle of this class which will weave continuously without breaking the weft, can be threaded quickly, will not come unthreaded during the weaving process and can be manufactured cheaply. The principal trouble with this class of shuttle is due to slack weft which forms each time the shuttle enters the box and which increases in proportion to the speed at which the shuttle is traversed across the shed. This slack weft may be curly and full of loops or coils or it may be comparatively free from same according as to whether it has been drawn from the small or large diameter of the cop. If it happens that the shuttle enters the box as the weft is being drawn from the small portion of the cop, the curly portion lies loose in the body of the shuttle and frequently knots or loops around the end of the shuttle peg with the result that it is broken when the shuttle is picked out of the box. If on the other hand the weft is comparatively straight, a loop is formed when the shuttle is suddenly arrested and such loop extends over the top of the shuttle. When the latter is picked from its box this loop frequently gets trapped in the shed which is not fully opened at this period, with the result that the weft is drawn out of its working position and the shuttle becomes unthreaded; moreover when the weft is coming off the large portion of the cop it comes oif much more easily than it does when coming off the small portion of a nearly finished cop.

According to this invention a restraining element or elements is or are applied direct to the shuttle peg at or near its free end and has its or their free end or ends so shaped or protected as to present no portion upon which the yarn could become entangled.

In the accompanying drawings Figure 1 shows a form of the invention applied to a shuttle in which the threading operation is performed by sucking or inhaling the weft through the shuttle eye.

Fig. 2 is a section taken on line 22 of.

Fig. 1. v

Fig. 8 is a longitudinal section of part of a loom shuttle and Fig. 4 is a transverse section showing a modified arrangement of restraining element.

Fig. 5 is a lan and Fig. 6 a section on line 6-6 showing another modification.

Fig. 7 is a similar view to Fig. 6 showing a double restraining element.

. Fig. 8 is a'plan, Fig. 9 a front view, and a Fig. 10 a longitudinal section of a hand threading shuttle constructed in accordance with this invention and provided with one of the restraining elements.

In the arrangement shown in Figs. 1 and 2 two india rubber wafers A are fixed in the shuttle so that they occupy a V position with the end of the shuttle peg B lying in the apex of'the V. Both wafers exert a slight pressure against the end of the peg so that as the weft C is drawn between the latter and the wafers it is held at this point and prevented from flying back, ballooning or looping when the shuttle is suddenly brought to rest. In the arrangement shown in Figs. 3 and 4 a single wafer A is fixed in an inclined position in the bottom of the shuttle so that it bears against the underside of the shuttle peg at or near the end. This wafer may be mounted in an inclined slit a formed transversely in the shuttle and if desired a number of such slits may be provided to regulate the position of the wafer in accordance with the length of the peg. In an alternative arrangement the wafer or wafers may be mounted in a sliding carrier capable of being moved toward or away from the point of the shuttle peg and fixed at any required distance therefrom. In the modification shown in Figs. 5 and 6 a light metal sprin A is substituted for the india rubber wa er. The upper portion of the spring is folded and secured in a hole a in,

the shuttle by a pin a The intermediate portion of the spring bears against the side of the peg B near its end and its lower POI? tion enters a hole a shuttle to prevent the weft catching around the end of the spring If desired two in the bottom of the springs may be used as shown in Fig. 7. By controlling the weft at the peg point in the manner described almost any simple form of hand threading device can be used and which without the tensioning device would be quite useless for weaving purposes. A simple and efficient form of hand threading device which can be threaded with the utmost facility without resorting to the objectional practice of wetting the finger and thumb in order to draw the weft through the shuttle eye and which will not unthread during the working of the shuttle, is shown in Figs. 8 to lO and comprises a metal plate D tapered toward its front end and having a spur (Z (Fig. 8) at the back to enter a groove or recess (Z that is formed in the back of the recess (Z in which the plate is situated. A recess (Z is formed in the plate D behind the spur d and at one end of such recess is a prong (Z which enters a hole formed transversely in the shuttle. By this arrangement the recess d is closed at one end by the prong d" and at the other end by the spur d entering the groove d The front end of the metal plate lies a little below the top of the shut e and the plate is then continued down until it extends along the center or thereabouts of the shuttle eye E (Fig. 9) and enters a slit The plate is secured at this point by two pins (Z (Z which pass through the shuttle and plate, the pin d crossing the shuttle eye. This eye conveniently comprises an oblong slot which communicates with the recess in the shuttle head and is crossed at or toward its other end by a pin (i so that the shuttle is protected from wear as the weft runs out during each pick. To thread the shuttle the weft is passed around and under the plate D and is diverted out of a straight course by passing over the spur d until it enters the recess (Z from which it cannot escape during weaving. As the weft is puhed rearwardly it travels under the plate and occupies a position transversely across the shuttle eye and as there is no finger groove or recess at this portion of the shuttle the weft can be drawn through the shuttle eye, by drawing the thumb across the eye and rearwardly along the longitudinal groove F at the front of the shuttle without having to dig into a recess to get hold of the weft as is the case in the generality of hand threading shuttles having closed eyes. 7

What I claim as my invention and desire to secure by Letters Patent in the United tates is l. The combination, with a loom shuttle provided with a peg for holding a cop, of a strip of resilient material secured to the shuttle body at one end and provided at its free end portion with a smooth surface which bears forcibly against the free end portion of the said peg and operates to press the weft against the said peg as the weft passes out of the shuttle.

2. The combination, with a loom shuttle provided with a peg for holding a cop, of a strip of india rubber secured to the shuttle body at one end and arranged with its free end nortion bearin forcibl a 'ainst the free end portion of the said peg and operat ing to press the weft against the said peg as the weft passes out of the shuttle.

3. The combination, with a loom shuttle provided with a peg for holding a cop, of two strips of resilient material secured to opposite sides of the shuttle body at one end and-provided at their free end portions with smooth surfaces which bear forcibly against the free end portion of the said peg on opposite sides thereof, said strips operating to press the weft against the saidpeg as the weft passes out of the shuttle.

In testimony whereof I affix my signature.

THOMAS HENRY VVHALLEY.

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