US1983409A - Weft inserting mechanism for looms for weaving - Google Patents

Description

0. SHIMWELL Dec. 4, 1934.

WEFT INSERTINQ MECHANISM FOR LOOMS FOR WEAVING Filed March 16, 1933 Patented Dec. 4, 1934 PATENT OFFICE o 1 WEFT INSERTING MECHANISM FOR LOOMS FOR ,WEAVING Oliver Shimwell, Gawsworth, England Application March 16, 1933, Serial No. 661,173 In Great Britain March 16, 1932 3 Claims.

This invention relates to weft inserting mechanism for looms for weaving. Such mechanism usually comprises shuttles containing the weft yarn upon pirns, cops or the like, or weft carriers (used in shuttleless looms with stationary weft supplies) of shuttle like form which pick up the weft yarn at the opposite sides of the sheet of warp threads and transfer it into the latter. It will be appreciated that when the shuttle or weft carrier enters the shed it is more or less out of control; in fact there is no control after it leaves the shuttle box where it has received its driving blow. In addition the shuttles and weft carriers ride upon the warp threads upon the slay and are liable to damage the same especially if the shuttle be heavy and its fiight be interfered with from any cause.

The object of my present invention is to provide improved means for controlling the flight of the weft inserting device (hereinafter termed shuttle) such means maintaining the shuttle out of contact with the warp threads so that damage thereto is obviated.

Heretofore it has been proposed to build a shuttle with spindles therein, which run in the hooked ends of parts secured against the face of the reed so that in effect the shuttle is, during its flight overhanging from two rails of comb like form one above the other, upon the reed face.

This invention comprises the improved constructions and arrangements of weft inserting mechanism for looms hereinafter described and claimed.

Referring to the accompanying explanatory drawing:

Figure 1 is a perspective view, and Figure 2 a sectional side elevation showing a modified construction of shuttle and slay in accordance with my invention.

In the figures the slay sole is shown at a, the slay top at b, the reed at c, the shuttle at d, the warp threads at e, and the weft thread (trailing from the shuttle eye) at f. The cop within the shuttle is lettered d The shuttle d rides upon a series of ridges or projections k on the sole plate is and is held down upon such plate by overhead arms 25 each of which arms lies throughout its height in the same vertical plane adjustably secured to a plate 26 hingedly attached at 2'7 to the slay top I). The said arms come over the shuttle immediately adjacent to the reed as shown, and pass between the warp threads. The arms can be put into and out of service by swinging the plate 26 upwards about its hinge supports. The fingers q maintain the shuttle against the reed e during its flight. The ridges k keep the shuttle clear of the warp threads which pass beneath the shuttle so preventing damage thereto and at the same time reducing the frictional retardation of the flight or travel of the shuttle.

The arms 25 and fingers q both pass between the warp threads without unduly disturbing the same. The fingers q which bear against a hard wood base h of the shuttle in its fiight are upon a plate 1) which is secured by studs and long slots (to per- '65 mit of lateral adjustment of the fingers) to a plate n upon the slay sole, the sole plate 7c having the ridges k thereon being secured to the plate 11., as shown in Figure 2.

The shuttle is tapered for a considerable length at each end, one end being shown in Figure 1, the object being to enable the shuttle to enter the shed without touching the warp threads much earlier than would be the case with a blunt ended shuttle. The shuttle can in fact commence to 7 enter the shed before the slay has returned to its initial position after the beating-up operation.

I find that by using shuttle control arrangements in accordance with my invention, I can if desired use larger shuttles than at present employed with larger cops, pirns or the like therein, so that the number of picks that the shuttle will make before the cop or pirn is exhausted, is increased without any liability of damage to the warp threads by the shuttle.

It will be seen that in accordance with my invention the shuttle runs upon the slay and is held against the slay and against the reed (so that its flight is controlled) by parts upon the slay. I

In addition, the shuttle is held clear of the warp threads so that it cannot damage them. Further thefingers or arms q and 25 whilst they divide the warp threads, do not in any way control the fineness of the threads which can be used such as would be the case if such parts constituted a comb adjacent to the reed.

What I claim is:

1. Weft inserting mechanism for looms comprising in combination a reed, a slay, a sole plate mounted on the said'slay, ridges upon the said sole plate adapted to hold the shuttle clear of the sole plate and above the lower row of warp threads, arms adapted to pass between the warp threads depending from the slay top to come over the shuttle in its flight and maintain it upon the ridges, and fingers upon the slay sole adapted to bear upon the front of the shuttle and maintain it against the reed.

2. Weft inserting mechanism for looms comprising in combination a reed, a slay, a sole plate mounted on the said slay ridges adapted to pass between the warp threads upon the said sole plate to raise the shuttle clear of the sole plate, arms adapted to pass between the warp threads and coming over the shuttle in its flight to maintain it upon the ridges, a plate hingedly carried by the sole top having the said arms thereon, and adjustable fingers upon the slay sole adapted to bear upon the base of the front of the shuttle in its flight and maintain it against the reed;

3. Weft inserting mechanism for looms comprising in combination a reed, a slay, a sole plate mounted on the said slay, a plate secured upon the slay sole, a ridged plate secured upon the said plate, the ridges forming a raised surface to support the shuttle in its flight clear of the warp threads beneath, a plate with fingers projecting upwardly therefrom also adjustably secured upon the first mentioned plate, the fingers coming between the warp threads and bearing against the base of the front of the shuttle in its flight to maintain the shuttle against the reed, a plate hingedly secured upon the slay top at the side of the reed at which the shuttle travels, arms adapt ed to pass between the upper warp threads adjustably attached to said hinged plate and. bearing upon the upper surface of the shuttle adjacent to the reed to maintain the shuttle upon the ridged plate in its flight.

OLIVER SHIMWELL.

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