US2416098A - Narrow fabric multiple web loom - Google Patents

Description

.'Feb. 18, 1947.

w. HoLT 2,416,098 NARROW FABRIC MULTIPLE WEB LOOM Filed April 24, 1945 4 Sheets-Sheet 1 Feb. 11s, 1947. W, HOLT i2,416,098*

NARROW FABRIC MULTIPLEAw-EB LOM Filed April 24, 1945 4 Sheets-Sheet2 Fly?.

197 ro/PNA-'X Feb. 18, 1947. w. HoLT 2,416,098

NARROW FABRIC MULTIPLE-WEB LOOM Fi1ed'Apri1'24, 1945 4 sheets-sneer s venon W/L L mm Hoz r.

Feb. 18,- 1947.'4 v W, HOL-r 2,416,098

NARROW FgBRIC MULTIPLE WEB LOOM Filed April 24, 1945 4 ASheets-Sheet 4 vlo menaa Feb. 1s, 1947 NARROW FBRIC MULTIPLE WEB LOOM William Holt, Manchester, England, assigner oi one-half to J. da N. Philips and Company Limited, Manchester, England, a British company Application April 24, 1945, Serial No. 590,072 In Great Britain April 17, 1944 'I'his invention relates to narrow fabric multiple web looms of the type in which the weft for each web is drawn from a stationary supply and is inserted from one edge of the web by a weft layer" into successively formed warp sheds in the form of a loop or double pick, through which loop, at the other edge of the web, a shuttle is passed carrying a binding or selvege thread.

Whilst in principle looms of the type referred to have known advantages and possibilities particularly as regards production capacity, such looms have been relatively complicated and costly to make and maintain compared with the ordinary loom, and particularly as regards the construction of the binding shuttle mechanism.

The object of the present invention is an improved construction of loom of the kind referred to which is simpler and less costly to make and maintain than existing looms of the type referred to. Y

According to the invention a loom of the type referred to comprlsesincombination the arrangement of the plurality of webs in parallel vertical planes at right angles to the front of the loom and the provision of shuttle races for the binding shuttles in a common plane adjacent to the edges of the webs at which the loops are formed by the weft layers, such races having apertures in line with the weft layers through which the weft is brought bythe weft layers and heldto form a loop during the passage of the binding shuttles across such apertures. The races may be in alignment so that the adjacent ends of any two races may be common to their shuttles.

In the accompanying drawings,

Fig. 1 is a sectionalend elevation of one example oi' loom made in accordance with the invention.

Fig. 2.is a part front elevation of the loom shown in Fig. 1.

Fig. 3 is a detail view of the shuttle shown in Figs. 1 and 2.

Fig. 4 is a part plan of a. modified construction of loom according to the invention.

Fig. 5 is a part'end section on line 5-5 of Fig. 4.

Figs. 6 and 7 aredetail views of the ,locking shuttle.

Fig'. 8 shows on a reduced scale the mounting and operation of the sley.

I to the lower guide I9 for the web, and into the Fig. 9 shows a modified construction of shuttle l and shuttle operating mechanism.

In the example of the invention shown in Figs. l, 2 and 3 the loom is constructed at the back for a single warp beam I0 from which the warps II for each web are brought forward in a horizontal plane at the top of the loom. through a warp stop motion I2 to a front roller I3 from which they are turned at I4 for each web into planes at right angles to the front of the loom. Such warps II pass down through heald frames I 5 mounted in common rails I6 behind the warps, through the reed I I which is carried on a sley I8 having an up and down motion in the plane of the Webs, and then after being woven, each woven web IIa passes through a guide I9` and turns to engage a common take-up roller 20, from which it passes to a spool 2| at the back o'f the loom on which the woven fabric is Wound as weaving progresses.

The weaving mechanism comprises a weft hook shaft 22 arranged across the loom and carrying a hook-shaped weft layer 23 foreach web, each weft layer having an arm part 23a which extends forward beside the Iweb and a curved scythe shaped off-set portion 23h which is adapted to be passed through the shed of the warp, the end having an eye 24 (see Fig. 5) and the back having a guide groove 25 for the weft (see Fig. 4). 'I'he weft 26 is drawn from a suitable weft cone 21 at the front of the loom, passes through weft compensator and tensioning means 28 adjacent guide groove 25 on the back of the weft hook and out through the eye 24. All the weft hooks are adapted to be operated simultaneously by simple mechanism arranged to impart an oscillatory rotational motion to the weft hook shaft 22 to which all the weft hooks are secured. One such mechanism is described later as shown in Fig. 4.

The binding shuttle mechanism comprises a rail 29 located behind the weft hook shaft 22 and incorporating a common shuttle race 30 for a binding shuttle 3| for each web, on which rail is slidably mounted a common driver bar 32 carrying drivers 33 for each of the shuttles.

In the rail, and across the shuttle race are apertures 34 (see Figs. 2 and 3) into which the ends of the weft hooks 23' enter after passing through the open warp sheds. 'I'he up and down-move- -In operation, when the warp sheds have been opened by the healds, in known manner, the weft hook shaft 22 is turned so that the point of each Scythe-shaped portion 23h enters the open warp shed. At the end of thismovement the eye end of the hookcarries the weft 26, positioned like the string of a bow as shown in Fig.

1, into the aperture 34 in the common binding shuttle race and across the path of the shuttle. While thus holding a loop of the weft, the driver bar 32 is operated by suitable mechanism to move the shuttles 3| so that each traverses the` gap 34 in the rail passing through the weft loop` -V held therein lby a weft hook. Thereupon the weft hooks are withdrawn, the weft tension being maintained by the compensating mechanism 28. Thereafter follow the usual beatingup and changing of the shedding ready for next pick during which the binding shuttles 3l will be moved back through the loops and over the weft threads as above described so as to return to their original positions in the shuttle race 30.

In the example of the invention illustrated I with reference to Figs. 4, 5, 6, '7 and 8, as compared with the example shown in Figs. 1 and 2, the arrangement consists mainly in the shedding portion of the webs in a horizontal direction instead of vertical. but with the webs still in parallel vertical planes. In said Figs. 4, 5, 6, 7 and 8, the warp threads 40 are brought forward in a horiz'ontal plane from the back of the loom. and pass through heald frames 4I to the reed 42 carried on the sley 43. The sley 43 is oscillated fromiront to back of the loom and vice versa, and after being woven, each woven web 40a passes through a guide 44, and turns to pass over a bar 45 from which it passes to a spool (not shownbut similar to spoo1 2| of Figs. 1 and-2) on whichithe woven fabric is wound as weaving progresses.

The weaving mechanism comprises a weft hook shaft 46 arranged across the loom and carries hook-shaped weft layers 23 similar to the layers of Figs. 1 and 2, the weft 23a: being drawn from a suitable source of supply and passing through weft compensator and tensioning means 41, and into the guide groove and out through the eye 24v (see Fig. 4). 'Ihe shaft 46 has oscillatory rotational movement imparted to it at the required time and in the requireddirection of rotation to lay the wefts by means of a rack 48 acting on pinion 49 mounted on the shaft 46. As the wires of the reed are horizontal there would be a disadvantage if the sley had the usual arcuate movement and therefore as shown in Fig. 8 the sley 43 carrying the reed 42 is connected at each end of the loom to a rod 43a slidably mounted in brackets -43b and movable by a sley sword 43c which is slotted at 43d to compensate the arcuate movement of the end of the sword. The sley sword is operated by a cam 43e having aldwlell position and similar to theL cam 38 of In this example each binding shuttle 50 is constructed as shown in Figs. 6 and "I, the shuttle having a rack 5l which is engaged by pinions 52 loosely mounted on studs 53 disposed on `the shuttle race 54, the pinions 52 being in turn engaged by a rack 54a mounted on a reciprocating driving bar 55 supported by a cross-rail 56.

In operation, when the Warp sheds have been 4 opened by4 the healds, by means of the heald frames 4l being moved endwise by providing mechanism, the weft' hook shaft 46 is partially rotated by the rack 48 and pinion 49, and the weft hook 23 is moved from the position shown in full lines Fig. 5, to the position shown in dotted lines. 'Ihe weft 23:1: is carried into the aperture 51 in the common binding shuttle race 54 and is positioned like the string oi.' a bow across the path of the shuttle. Whilst the weft is so disposed, the driving bar 55 is operated to move each shuttle so that it traverses the gaps 51 in the shuttle race 54, and the binding thread 50x will bind or lock the weft 23a: at the lower selvedge when .the weft hooks are withdrawn. 'I'he weft at the other or upper selvedge will of course be locked by the change of the shedding. In the modiiication shown in Fig. 9 a plurality of arcuate shuttle races 59 crossing in a common plane are provided, the shuttles 60 being curved in shape and each having a rack 6I. The shuttles are operated by pinions 62 and driving rack bar 63, and the races have apertures 64 through which the weft layers pass.

It is obvious that instead oi' a single warp beam, any suitable arrangement of'beams could be used, whilst the woven fabricfsinstead of being wound on spools, could be led into s pitable boxes.

I declare that what I claim is: i

1. A narrow fabric. multiple web `loom comprising in combination a plurality 'of webs arranged in parallel vertical planes at right angles to the front of the loom, means for shedding the warps of each web, a stationary lsupply of weft for each web. a pivoted hook-shaped weft layer for each web adapted to lay the weft from the said stationary supply in successively formed warp sheds in each web so that while the weft-layer is in the shed the weft is held from the end thereof as the string of a bow, a binding shuttle for each web, races for the binding shuttles arranged in a common plane behind and crossing the planes of the webs, said races having notches each adapted to be entered by the end of its weft layer over the path of the shuttle and so as to carry the weft across and beyond the path of the shuttle, and means for passing the shuttle through the angle of theweft layer and its thread.

2. A narrow fabric multiple web loom comprising in combination a plurality of webs arranged in parallel vertical planes at right angles/ to the front of the loom, means for shedding the warps of each web, a stationary supply of weft for each Web, a pivoted hook-shaped weft layer for each web adapted to lay the weft from the said stationary supply in successively formed warp sheds in each web so that while the weft-layer is in the shed the weft is held from the end thereof as the string of a bow, a binding shuttle for each web, races for the binding shuttles arranged in a common plane behind and crossing the planes of the webs, said races having notches each adapted to be entered by the end of its weft layer over the path of the shuttle and so as to carry the weft across and beyond the path of the shuttle, and means for passing the shuttle through the angle of the weft layer and its thread. characterised in that the adjacent ends of any two shuttle races are common to their shuttles.

3. A narrow fabric multiple web loom comprising in combination a plurality of webs arranged in parallel vertical planes at right angles to the front of the loom', means for shedding the warps of each web, a stationary supply of weft for each web, a pivoted hook-shaped weft layer for each web adapted to lay the weft from the said stationary supply in successively formed warp sheds in each web so that while the weft-layer is in the shed the weft is held from the end thereof as the string of a bow, a binding shuttle for each web, races for the binding shuttles arranged in a common plane behind and crossing the planes ot the webs, said races having notches each adapted to be entered by the end of its weft layer over the path of the shuttle and so as to carry the weit across and beyond the path of the shuttle, and means for passing the shuttle through the angle of the weft layer and its thread, characterised by a single operating member extending and moving longitudinally behind the shuttles and engaging all the binding thread shuttles through intermediary members.

4. A narrow .fabric multiple web loom as claimed in claim 3, further characterised in that the operating member for the binding thread 6 shuttles is a single driving bar having a. continuous toothed rack mounted thereon which operates the shuttles through intermediate pinions.

' Y WILLIAM HOLT.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 160,749 Chapman Mar. 16, 1875 '705,649 Conklin July 29, 1902 1,337,259 Parker Apr. 20, 1920 1,364,138 Parker Jan. 4, 1921 2,112,912 Kennary Apr. 5, 1938 FOREIGN PATENTS Number Country Date 2,434 British 1881

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