US2316703A

US2316703A - Loom for weaving

Info

Publication number: US2316703A
Application number: US383327A
Authority: US
Inventors: Moessinger Albert
Original assignee: Sulzer AG
Current assignee: Sulzer AG
Priority date: 1940-03-21
Filing date: 1941-03-14
Publication date: 1943-04-13
Anticipated expiration: 1960-04-13

Description

April 1943- A. MOESSINGER V 2,316,703

LOOM FOR WEAVING Filed March 14, 1941 INVENTOR ATTORW Patented Apr. 13, 1943 LOOM FOR WEAVING Albert Moessinger, Winterthur, Switzerland, as-

signor to Sulzer Freres, Socit Anonyme, Win-- terthur, Switzerland Application March 14, 1941, Serial No. 383,327 In Switzerland March 21, 1940 4 Claims. (01:139-188) The present invention relates to weaving and more particularly to a loom employing a nipper device for inserting the weft into the shed and fixed weft bobbins, the said gripperdevice being guided by means rigidly connected to the slay.

An object of the invention resides in the provision of means which assure that the average direction of the motion of the guide means mov-- ing with the slay is set obliquely to the central plane of the shed, in such a way that the whole guide means is swung-inat the same side of the fabric. The average direction of motion of the slay with respect to the central plane of the shed may be chosen so oblique that, when beating up the weft, the shuttle guide can pass along without touching the temples. The weft inserting device may be guided all round by the guide means.

Guidance of the shuttle in the shed by means of a tooth-shaped guide-element fixed on the slay is known per se. All conventional constructions however suifer from the drawback that no guiding is possible along the broad side of the normal roller temple, because the guide means would collide with the roller temple during the beatingup operation.

An interruption of the guide effect for at least 4 inches is of no great consequence inslow-speed machines with large, long shuttles and with rigid weft needles. Thoroughtests have shown that such an interruption of the guide eifect is absoluteiy impossible in the case of high-speed machines with very small shuttles or with thin, flexible weft needles.

Guide means have been proposed which carry out an additional movement relatively to the slay so that the shuttle guide is opened during the beat. Such constructions suffer from excessive wear and the guide effect is inaccurate'after a short time of use. The present invention provides means for overcoming the shortcomings of the conventional mechanisms. According to the invention the direction of movement of the slay is inclined with respect to the center plane of the shed so that the guidemeans move outside of the fabric and of the temples.

With an arrangement according tothe present invention the weft inserting means are guided all around and in all directions.

Further and other objects of the present in vention will be hereinafter set forthin the accompanying specification and claims and shown in the drawing which, by way of illustration, shows what I now consider to be preferred embodiments of my invention.

looms for I In the drawing:

Fig. 1 is a diagrammatic part sectional side view of a mechanism according to the invention.

Fig. 2 shows a modified guide-tooth for a weft needle.

Fig. 3'illustrates the shuttle guide seen from the side of the fabric towards line III-III of Fig. 1.

Like parts are designated by like numerals in all figures of the drawing.

Referring more particularly to the drawing, Fig. 1.illustrates the slay mechanism according to th invention, the solid lines showing the mechanism in picking position and the dash and dotted lines showing the mechanism in beating up position. A main shaft 2 which is driven by the loom is rotatably supported on frame member I. Eccentric 3 is keyed to shaft 2 and transmits by means of a connecting rod 4 and through pivot pin 5 a reciprocating motion to slay lever I which swings about pivot pin 6. Lever I is shown in solid lines in picking position i. e. in its extreme position; the dot and dash showing I of the lever indicates it in its beating up position.

Slay 8 is mounted to the slay lever or arm I. The direction of movement of slay 8 and of arm 1 into position I is illustrated by means of the dot line 25. Slay 8 is provided with a groove 9 in which reed I0 is firmly held by means of wedge member II and screws I2. A shuttle guide is mounted on the slay 8. This guide is formed by a T bar I3 having slots 23 into which slots the guide plates It proper are inserted and soldered to bar l3.

Fabric I5 is stretched by means of roller temples I6 and their cover I6. Warp threads I 1 form the-shed, the center plane of which is indicated by the dash and dot line I8. An eightsided shuttle 20 moves in or immediately adjacent to the center plane. I8. Reed I0 is in inclined position with respect to center plane It and is perpendicular or substantially perpendicular thereto, i. e. inclined relatively to the direction of the beat, when in beating up position.

According to the invention the position of fulcrum 8 is located between an imaginary plane extending through the edge I9 of the fabric and at right angle to the plane I8, and warp beam 30 which is indicated in small scale on Fig. 1. Because of this the slay 8 moves in an inclined direction. The location of fulcrum B is so far to the left that the guide teeth 2| of the guide plates I4 pass below the temple roller I6 and the general direction of movement of the slay is inclined with respect to the center-plane of the shed.

means consists of a flexible strip 22 instead of a shuttle 20 as in Flgurel.

Fig. 3 is a. side view of the guide plates I seen from the side of fabric I. The plates M are fixed in the slots 23. The T-bar i3 is connected with the slay I as shown in Fig. 1.

While I believe the above described embodb ments of my invention to be preferred embodiments, I wish it to be understood that I do not a desire to be limited to the exact details of design and construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim:

1. In a loom for weaving, a lay comprising support means disposed underneath the warp threads, reed means connected with and projecting upwardly from said support means, weft insertion means, guide means mounted on said support means forward of said reed with respect to its movement toward the finished fabric and projectingupwardly from said lay and between the lower warp threads,'said guide means laterally substantially surrounding said insertion means and having marginal portions adapted to contact said weft insertion means and enclosing the center of gravity thereof, and weft thread passage means provided on the portion of said guide means facing said reed and opening toward said reed.

2. In a loom for weaving, a lay comprising support means disposed underneath the warp threads, reed means connected with and projecting upwardly from said support means, weft insertion means, guide means mounted on said support means forward of said reed with respect to its movement toward the finished fabric and projecting upwardly from said lay and between the lower warp threads, said guide means lat-. erally substantially surrounding said insertion means and having marginal portions adapted to contact said weft insertion means and enclosing the'center of gravity thereof, and weft thread passage means. provided on the portion of said guide means facing said reed and opening toward saidreed, said guide means being spaced from said reed and mounted to said support means and guiding said weft insertion means completely independently of said reed and having said marginal portions contacting said weft insertion means completely independently from said reed.

3. In a loom for weaving, a 1ay.comprising support means disposed'undemeath the warp threads, reed means connected with and projecting upwardly from said support means, weft insertion means, guide means mounted on said support means forward of said reed with respect to its movement toward the finished fabric and projecting upwardly from said lay and between the lower warp threads, said guide means laterally substantially surrounding said insertion means and having marginal portions adapted to contact said weft insertion means and enclosing the center of gravity thereof, weft thread passage means provided on the portion of said guide means facing said reed and opening toward, said reed, and lay motion control means maintaining the top portion of said guide means below the upper warp threads at all operating positions of said lay.

4. In a loom for weaving, a lay comprising support means disposed underneath the warp threads, reed means connected with and projecting upwardly from said support means, weft insertion means, guide means mounted on said support means forward of said reed with respect to its movement toward the finished fabric and projecting upwardly from said lay and between the lower warp threads, said guide means latr erally substantially surrounding said insertion means and having marginal portions adapted to contact said weft insertion means and enclosin the center of gravity thereof, weft thread passage means provided on the portion of said guide means facing said reed and opening toward said reed, and lay motion control means maintaining the top portion of said guide means below the upper warp threads at all operating positions of said lay and -moving said top portion tangentially to the upper warp-threads, said top portion having a marginal portion disposed parallel to the upper warp threads at the tangential point of movement of said top portion underneath the upper warp threads.

ALBERT MOESSINGER.