US3168911A - Looms - Google Patents

Description

5 Sheets-Sheet 1 ATTORNEYS Feb. 9, 1965 E. PFARRWALLER ETAL LOOMS Filed Nov. 8, 1962 wn m. )1 4 mm? n n :1 F WW Rc Mn $340 o HMO H w 8 JPN A 3 a W n 3 MW. 4 2 W 0 mt m a A 8 a 2 m Z a ll 3 8 0 2 4 a L 5 5 0 7 5 I E m 3: w

Feb. 9, 1965 E. PFARRWALLER ETAL ,168,91

LOOMS Filed Nov. 8, 1962 5 Sheets-Sheet 2 Fly. 3

Jnvenla'rs: ERWIN PFARRWALLER LUCIANO CONT BY ATTORNEYS Feb. 9, 1965 E. PFARRWALLER ETAL 3,168,911

LOOMS 5 Sheets-Sheet 3 Filed NOV. 8, 1962 Jnvenfors: ERWIN PFARRWALLER LUCIANO CONT BY ATTORNEYS Feb. 9, 1965 E. PFARRWALLER ETAL LOOMS 5 Sheets-Sheet 4 Filed Nov. 8, 1962 A g ml Jnvenfars: ERWIN PFARRWALLER LUGIANO CONT Feb. 9, 1965 Filed NOV. 8, 1962 o I o E. PFARRWALLER ETAL LOOMS 5 Sheets-Sheet 5 Jn venlor's; ERW\N PFARRWALLER LUGIANO CONT 11 ATTORNEYS United States Patent Ofilice 3,168,911 Patented 1F eh. 9, 1965 3,168,911 LGGMS Erwin Pfarrwaller, Winterthur, and Luciano Cont, Utterwintcrthur, Switzerland, assignors to Suizer Freres, Societe Anonyrne, Winterthur, Switzerland, a Swiss company Filed Nov. 8, rsez, $81. No. zaesra Claims priority, application Switzerland Nov. lltl, 196i 9 Claims. (43!. 139-122) This invention relates to looms of the kind having a framework (herein termed a creel) supporting a plurality of weft spools which remain outside the shed during weaving, the creel usually being at one side of the loom.

In a known loom of this kind the creel is rigidly secured to the loom frame.

According to the present invention in a loom of the kind specified the creel is hinged to the loom frame so as to be pivotable after the style of a door together with the weft bobbins.

The hinge axis is preferably vertical or nearly vertical.

For overhaul of the loom the creel no longer has to be removed and then re-fitted, but instead it can easily be swung aside (opened) and after overhaul be swung back into position (closed). Various parts of the loom situated behind or beneath the creel are thus very quickly accessible, for example heddle driving mechanism such as a card dobby or a cam mechanism, a shuttle picking unit, thread tensioners, thread brakes, weft thread feeder .and pull-back devices co-operating with the shuttles and which, particularly in the case of a multiple colour loom, consist of a large number of parts and heddle turnback mechanism for use after weft thread breakage. In the open position, the creel takes up relatively little space, less than a creel which has been removed from a known loom when such creel stands beside the loom and constitutes an obstacle to the weaver. Furthermore, in many cases the creel need be swung away only to a smaller extent than the maximum possible pivoting arc.

In one form of the invention intended more particularly for multi-weft looms having, for example, four or eight weft spools, the creel consists of two symmetrically arranged halves which can be swung apart after the style of a two-leaf door. The open creel then requires ery little space in the vicinity of the loom because the pivoting arc of each half of the creel is correspondingly reduced as compared to a creel pivoted as a whole. In some cases only one half of the creel need be swung aside for overhaul purposes.

Some specific embodiments of the invention will now be described by way of example with reference to the accompanying drawings in which:

FIGURE 1 is a front view of a four-Weft loom embodying one form of the invention;

FIGURE 2 is a side view, looking from the left in FIGURE 1, on a larger scale;

FIGURE 3 is a plan view of the parts shown in FIG- URE 2 with the creel closed;

FIGURE 4 is a corresponding plan view with the creel open;

FIGURE 5 is a side view, corresponding to FIGURE 2, of another embodiment;

FIGURE 6 is a detail of FIGURES 2 to 5 on a larger scale;

FIGURE 7 is a side view, corresponding to FIGURES 2 and 5, of a further embodiment; and l FIGURES 8 and 9 are plan views of details of different constructions, shown partly in section.

The general view in FIGURE 1 shows only the most important parts of the loom. The loom frame consists essentially of the two side frame members I, 2 and a cross member 3 connecting them together. Between the two side frame members 1, 2 are mounted a cloth beam 5 which carries the cloth 4 shown in chain-dotted lines and a breast beam 6. Three sley brackets 3, 9, II are also shown and carry a sley (not shown) together with a reed and a shuttle guide, which latter consists of a plurality of teeth which can penetrate the warp. The brackets 8, 9, 11 are disposed on the cross member 3 and are connected together by a flat member 7 on which other parts are disposed.

At the top of the side frame member 1 is mounted a picking unit 12, while a shuttle catching unit 13 is disposed at the top of the side frame member 2, the shuttles introducing the weft into the shed. The heddles are denoted by reference 14. On the right of FIGURE 1 is disposed the main loom drive. It consists of an electric motor 15, a V-belt drive 16 and a combined clutch and brake 17.

At the left-hand side of the loom in FIGURE 1, at the bottom, a heddle driving mechanism 13 is disposed, for example a card'dobby or a cam mechanism. Above the mechanism 18 is the creel, which in FIGURE 1 has been given the general reference 19 for eight Weft spools 314$. FIGURES 2 to 5 also show the warp beam 21.

The creel 19 as shown in FIGURES l to 3 consists essentially of two vertical hinge rods 22, 23 to which are secured curved support rails 24 and 25 respectively, and to which a number of pieces of felt 3d are glued to prevent the weft thread ends from rubbing on the meal rails. Vertical rods 26, 27 are disposed on the rails 24, 25. Horizontal adjustable supporting arms 28 are secured to the rods 22, 23, 26, 27 and on these arms are held the Weft spools 31 to d8.

Each pair of spools 31, 32; 33, 34; 35', 36; 37, 38 respectively disposed one above the other in FIGURE 2, have threads of the same colour. Assuming, for example, that the weft threads are being drawn first off the top spools, the inner end of the thread of the top spool of a pair is connected to the outer end of the thread of the bottom spool of the pair so that after the top bobbin has been used up the bottom one comes into operation. Each pair of spools is disposed inside a horseshoe-shaped shield 41, d2; 45, 44 respectively, which shields preferably are made of transparent plastic material and by means of which the balloon of thread occurring during the unwinding of the four weft threads 45 to 58 shown in chain-dotted lines in FIGURES 3 and 4, is prevented from touching the adjacent ballons and other parts of the loom. The four shields 41 to are securedto the curved rails 24, 25.-

The two rods 22, 23 are rotatable in bearing cups5l, 52 in horizontal supporting brackets 53, 54 fitted to the side frame member 1. Near the top the rods 22, 23 are provided with sleeves 55, 56 which, when the creel 19 is removed from the loom, are slidable along the rods 22, 23 in the region 459. In FIGURE 6 the sleeve is shown on an enlarged scale. Each sleeve has a knurled head 71!. The lower parts 55a of the sleeves enter recesses in retaining brackets 57, 53 which are secured to the side frame member 1, or to some other stationary part of the loom and in which they are rotatable together with the rods 22, 23. In the secured position of the sleeve shown in FIGURE 6, a shoulder 72 on the sleeve rests on the bracket 57. At the front in FIGURE 6, the bracket 57 has an opening 73 forming the mouth of the recess. The diameter of the sleeve part 55a is larger than the width of the opening 73 while the diameter of the rod 22 is smaller than the width of the opening '73.

threadtensioners 62 and other fixed eyes 63 to the picking unit 12, from which they are inserted into the shed by the shuttles.

The creel 19 is made in two halves 64, 65 (FIGURES 3 and 4). The half as comprises the parts 22, 24, 41, 42 and the spools and holding elements disposed therein, While the half 65 comprises the parts 23, 25, 44, 43 and the spools and holding elements disposed therein. The halves d4, 65 are adapted to be swung away from the side frame member 1 about the axes of the rods 22, 23 as shown by the arrows as, 67. The creel is thus hinged to the loom frame 1, 2, 3 about vertical hinge axes (the rods 22., 23).

In FIGURE 3 the creel 19 is closed and is locked by a catch 68. In this position a pin 69 disposed on an angle member 82 (FIGURE 8) of one half 65 enters a corresponding hole in an angle member 81 of the other half 64 so that the facing ends of the two halves 64, as of the creel are kept at the same height.

In FIGURE 4 the two halves 64, as have been swung away from the side frame member l and the creel is open.

In this position both the heddle driving mechanism 13 and the various parts 61-63 outside the picking unit 19., the picking unit itself and the other parts (not shown) of the four-weft thread feed system are immediately accessible. For this purpose the two creel halves 64, as need only be in the semi-open position shown in FIGURE 4, but they can be swung out further if required.

In the example shown in FIGURE 9, a vertical fixed post 33 connected to the side frame member 1 is disposed between the two creel halves 64, 65 and the two halves of the creel in the locked position shown in FIGURE 9 bear against this post. In this position pins as on each of the two creel halves enter a hole 84 in the post 33. Each half also has a latch 68a, 65b respectively. These are slipped over two pins 35 fastened to the post 33.

When the creel is to be removed from the supporting brackets 53, 54 and the retaining brackets 57, 58, the sleeevs 55, as are slid upwards in FIGURES 2 and 6 until their bottom par 55a are clear of the brackets 57, 5'3.

The two creel halves d4, 65 can then be lifted upwards and outwards so that the hinge rods move out through the openings 73 and their lower ends come out of the bearing cups Sll, 52.' The procedure is reversed to replace the creel. 1

In the embodiment shown in FEGURE 5 the heddle driving mechanism 18' is disposed above the creel 64, 65 and is fitted to. a bracket 26. In this case the weft thread feed parts at to 63 and the four-weft feed mechanism are not accessible at all when the creel is closed, so the hinged creel of the present invention affords a big advantage.

In the embodiment shown in FIGURE 7, the loom frame has wedge-shaped feet 86, 87 of unequal height so that the loom is tilted forwards. The hinge rods 22, 23 of the creel 64, 65 are also inclined correspondingly. In this way the parts near the inserted weft thread are more easily accessible to the weaver.

In further embodiments, only four spools, for example, are held in the creel, i.e., two arranged one above the other in each half of the creel for example. The loom is then adapted forv Weaving with only two colours. Moreover, in the case of a single-colour loom, the creel comprising two weft spools arranged one above the other and with, for example, afiat shield between the spools, may be adapted'to piovt away from the loom frame about a single axis, for example an axis corresponding to that of the hinge rod 22. A construction of this kind with only a single, preferably vertical, hinge axis is also poshas a radius corresponding substantially to the distance 7 between the two hinge'rod axes 22, '23 in FIGURES 2 to 5. The creel may also be disposed higher-on the loom,

for example above the parts 61, 62, 63 and 12.

It vw'll be understood that the foregoing description rality of warp threads extending intermediate the warp and cloth beams, a creel comprising two vertical hinge rods positioned adjacent to one side of said loom frame, a horizontal support rail rigidly connected to each of said hinge rods and defining therewith a creel section, a plurality of supporting arms for mounting individually upon each arm a weft spool, said arms each being connected to one of said rails, abearing cup connected to alower portion of said loom frame for receiving the lower end of each of said hinge rods, a sleeve slidable upon an upper portion of each of said rods, a retaining bracket secured to the side of said loom frame to hold each of said sleeves, a respective set of said bearing cups, hinge rods, sleeves and retaining brackets comprising hinge elements per- 'ng swinging movement of each of said creel sections toward an operating position with respect to the loom and away from said position to permit access to the loom, and means for interlocking said creel sections in adjoining relation when in said operating position.

2. A loom according to claim 1 in which each of said creel sections includes a plurality of vertical-walled horseshoe-shaped shield members attached to and supported by said rails, said shield members having their open ends in surrounding relation to each of said spools, each ofsaid shields defining an opening for the passage of thread from said spool to said shuttle, one hield of each of said creel sections being adjacently positioned in the operating position of the loom, and pin means interconnecting the adjacently positioned shield members.

3. A loom comprising a frame for the support of warp threads, a plurality of weft thread spools, and means to support said spools, said support means including acreel comprising two vertical hinge rods positioned adjacent to one side of said loom frame, a horizontal support rail rigidly connected to each of said hinge rods and defining therewith a creel section, a plurality of supporting arms for mounting individually upon each arm a weft spool, said arms each being connected to one of said rails, a

caring cup connected to a lower portion of said loom frame for r ceiving the lower end of each of said hinge rods, a sleeve slidableupon an upper portion of each of said rods, a retaining bracket secured to the side ofsaid loom frame to hold each of said sleeves, a respective set of said bearing cups, hinge rods, sleeves and retaining brackets comprising lnnge' elements permitting swinging movement of each of said creel sections toward an operating position with respect to the loom and away from said operating position to permit access to the loom, and means for interlocking said creel sections in adjoining relation when in said operating position.

4. in combination with a loom which includes a frame for supporting a heddle, a reed, a shuttle, and warp and cloth beams, wherein movement of said heddle defines a shed for the insertion of a weft thread therethrough by transverse movement of the shuttle with respect to a pinrality of warp threads extending intermediate the warp and cloth beams, a creel comprising two vertical hinge rods positioned adjacent to one side of said loom frame,

a horizontal support rail rigidly connected to each of said. hinge rods and defining therewith a creel section, a plurality of supporting arms for mounting individually upon each arm a weft spool, said arms each being connected to one of said rails, a bearing cup' connected to a lower portion of said loom frame for receiving the lower end of each of said hingerods, a sleeve slidable upon an upper portion of each of said rods, a retaining bracket secured to the side of said loom frame to hold each of said sleeves, a respective set of said bearing cups, hinge rods, sleeves and retaining brackets comprising hinge elements permitting swinging movement of each of said creel sections toward an operating position with respect to the loom and away from said operating position to permit access to the loom, each of said brackets defining a recess for the reception of a sleeve and an opening communicating with said recess, said opening being of lesser width than the exterior lateral dimension of the sleeve, each of said sleeves further including a radially enlarged annular shoulder adapted to rest upon an upper surface of the retaining bracket to fix the sleeve longitudinally with respect to the hinge rod and the bracket, each of said sleeves being slidable upwardly for a distance longitudinally of each hinge rod to clear said retaining bracket, each of said hinge rods having a diameter less than the Width of said opening such that sliding of the sleeve upwardly out of the recess in the bracket and lifting of a hinge rod from its associated bearing cup permits the hinge rod to be shifted laterally from the recess whereby each of said creel sections may be removed from the loom.

5. A loom comprising a frame for support of warp threads and a creel for support of weft thread spools, said frame including two bearing cup and two retaining brackets at opposite sides of said frame, said creel including two symmetrically arranged sections and separate hinge means coupling said sections to said frame at opposite sides thereof for rotation about substantially vertical axes whereby said sections may swing apart away from operative relation to said loom frame, said separate hinge means including each a hinge rod borne in one of said bearing cups and engaged in one of said brackets, said loom further comprising releasable means to secure said sections adjacent each other in operative relation to said loom frame.

6. A loom according to claim 5 wherein each of said brackets includes a recess having an open mouth of width greater than the diameter of said hinge rods and in which each of said hinge rods carries a sleeve of diameter larger than said width, whereby said hinge rods may be removed from said brackets for withdrawal of their respective creel sections from said loom frame after lifting said sleeves out of said recesses.

7. A loom comprising a frame for support of warp threads and a creel for support of weft thread spools, said creel including two symmetrically arranged sections, at least two weft thread spools on each of said sections, and separate hinge means coupling said sections to said frame at opposite sides thereof for non-interfering rotation of said sections simultaneously about substantially vertical axes between an operating position for both of said sections adjacent said frame and an inoperative position for both of said sections remote from said frame.

8. A loom according to claim 7 including means detachably interconnecting said creel sections when in said operating position.

9. A loom according to claim 7 wherein each of said creel sections includes latch means engageable with said frame to hold such creel section in operating position.

References Cited in the file of this patent UNITED STATES PATENTS Jan. 31, 1959

Claims (1)

1. IN COMBINATION WITH A LOOM WHICH INCLUDES A FRAME FOR SUPPORTING A HEDDLE, A REED, A SHUTTLE, AND WARP AND CLOTH BEAMS, WHEREIN MOVEMENT OF SAID HEEDLE DEFINES A SHED FOR THE INSERTION OF A WEFT THREAD THERETHROUGH BY TRANSVERSE MOVEMENT OF THE SHUTTLE WITH RESPECT TO A PLURALITY OF WARP THREADS EXTENDING INTERMEDIATE THE WARP AND CLOTH BEAMS, A CREEL COMPRISING TWO VERTICAL HINGE RODS POSITIONED ADJACENT TO ONE SIDE OF SAID LOOM FRAME, A HORIZONTAL SUPPORT RAIL RIGIDLY CONNECTED TO EACH OF SAID HINGE RODS AND DEFINING THEREWITH A CREEL SECTION, A PLURALITY OF SUPPORTING ARMS FOR MOUNTING INDIVIDUALLY UPON EACH ARM A WEFT SPOOL, SAID ARMS EACH BEING CONNECTED TO ONE OF SAID RAILS, A BEARING CUP CONNECTED TO A LOWER PORTION OF SAID LOOM FRAME FOR RECEIVING THE LOWER END OF EACH OF SAID HINGE RODS, A SLEEVE SLIDABLE UPON AN UPPER PORTION OF EACH OF SAID RODS, A RETAINING BRACKET SECURED TO THE SIDE OF SAID LOOM FRAME TO HOLD EACH OF SAID SLEEVES, A RESPECTIVE SET OF SAID BEARING CUPS, HINGE RODS, SLEEVES, AND RETAINING BRACKETS COMPRISING HINGE ELEMENTS PERMITTING SWINGING MOVEMENT OF EACH OF SAID CREEL SECTIONS TOWARD AN OPERATING POSITION WITH RESPECT TO THE LOOM AND AWAY FROM SAID OPERATING POSITION TO PERMIT ACCESS TO THE LOOM, AND MEANS FOR INTERLOCKING SAID CREEL SECTIONS IN ADJOINING RELATION WHEN IN SAID OPERATING POSITION.

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