US2577266A

US2577266A - Axminster tube frame

Info

Publication number: US2577266A
Application number: US36983A
Authority: US
Inventors: Oscar V Payne
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1948-07-03
Filing date: 1948-07-03
Publication date: 1951-12-04
Anticipated expiration: 1968-12-04

Description

Dec. 4, 1951 o. v. PAYNE AXMINSTER TUBE FRAME Filed July 5, 1948 2 FIG. I '2 INVENTOR OSCAR v. PAYNE Jam). 47

ATTORNEY Patented Dec. 4, 1951 AXBHNSTER TUBE FRAME Oscar V. Payne, Leicester, Mass, assignor to Crompton & Knowles Loom Works, Worcester, Mass., a. corporation of Massachusetts Application July 3, 1948, Serial No. 36,983

10 Claims.

This invention relates to tube frames for Axminster looms and it is the general object of the invention to provide a tube frame having yarn tubes the yarn receiving mouths of which are disposed in such manner as to facilitate entry of large yarns and knots in the yarns.

An Axminster tube frame comprises an elongated carrier bar on which is rotatably mounted a spool wound with variously colored yarns arranged thereon in conformity with the pattern requirements of the fabric being woven. The bar is customarily provided with a row of aligned yarn tubes through which the yarns pass. According to prior practice it has been customary to make the yarn receiving mouths of the yarn tubes of a width not exceeding the space assigned to the tube measured in the direction of the length of the bar. Mouths formed in this manner are so narrow that it is diflicult for thic yarns and knots to enter them.

It is an important object of the present invention to change the shape of the yarn receiving mouths and arrange them in such manner that each mouth can be wider than has been possible under prior practice. Certain forms of yarn receiving mouths made according to the invention have sharp corners or notches which may interfere with easy entrance of a knot and it is a further object of the invention to provide a guard or guide plate which will cover the aforesaid corners or notches and direct the yarns to the wider parts of the mouths.

The guard has perforations which register with the wider parts of the mouths, and it is another object of the invention to form the guard with funnel like flanges which project into the mouths to afford a smooth entrance for the yarns and also assist in maintaining the mouths in correct position.

With these and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein two forms of the invention are set forth:

Fig. 1 is an elevation of one end of a tube frame made according to the preferred form of the invention, one of the loom chains which supports taken transversely through a group of yarn tubes on line 4-4, Fig. 1,

Fig. 5 is a view similar to Fig. 3 but shows the.

modification of the invention,

Fig. 6 is a front elevation looking in the direction of arrow 6, Fig. 5,

Fig. '7 is a view similar to a part of Fig. 2 but shows a yarn guard or guide which can be used with either form of the invention,

Fig. 8 is an enlarged vertical section on line 88,- Fig. '7, and

Fig. 9 is a plan view looking in the direction of arrow 9, Fig. 8.

Referring particularly to Figs. 1 and 2, the tube frame F includes an elongated preferably tubular carrier bar It] which may be of rectangular cross section. Extending upwardly from the carrier bar is a spool bearing II on which is rotatably mounted'a yarn spool l2 wound with a number of tuft yarns Y arranged side by side. A bracket l 3 also extends upwardly from the carrier bar to engage a transporting chain l4. A hook l5 normally cooperates with the chain M to support the tube frame, but when the latter is to be moved to tuft forming position the hook is moved away from-the chain by well-known clutch means not shown herein.

Extending along the front wall 20 of the carrier bar l0 and projecting downwardly therefrom is a series or row of yarn tubes T which may be arranged in small groups and attached to supporting plates 2| secured at 22 to the carrier bar. The lower ends of tubes T are formed with yarn delivery mouths 23 from which the yarns project downwardly when the tube frame is in the tuft forming or vertical position shown in Fig. 2.

Thematter thus far described, except as noted hereinafter, may be of usual construction and manipulated in the customary manner in an Axminster loom. During a tuft forming operation the lower ends of the yarn Y will be fastened to the fabric being woven, after which the tube frame will be raised to pull off enough tuft yarn for the next row of tufts to be formed by the tube frame. As the tube frame rises the spool l2 will rotate and the yarns will pass down through the tubes T.

In carrying the present invention into effect provision is made for equipping each of the yarn tubes T with a yarn receiving mouth wider than those customarily found in tube frames made according to prior practice. As indicated in Fig. 4 the yarn tubes are seamless and may be made of any approved material, such as thin metal or a plastic. These tubes are secured to the plate 2| in any desired manner, as by welding or soldering when the tubes are metallic. When the tubes are plastic the plate 2| may be made of the same material so that it maybe fused with the adjacent parts of the tubes.

As shown more particularlyin Fig. 3 each tube T of the preferred form has an upwardly facing or opening yarn receiving mouth which is substantially circular in form. In order that the mouths tances from the carrier bar.

may be wider than the space assigned to their tubes measured lengthwise of bar ill they are arranged in two rows as different distances from the carrier bar. Thus, in Fig.3 alternate mouths 25 are spaced a substantial distance from the plate 2 l, whereas the intermediate mouths 26 are closer to and may be in direct engagement with the plate.

The mouths are preferably arranged in parallel rows which are parallel to the row of tubes T and also to the carrier bar and are so placed that the yarns leading from the spool'are divided is illustrated as adapted to mouths of the preferred form. The guard is made of a sheet metal strip All formed with an upright wing M which extends along and is secured to plate 2| by screws 22. Extending forwardly from the wing over the mouths is a guard plate or zone 42 the forward edge of which if desired may be bent down as at into two planes or sheets one of which designated at 21 enters the front mouths 25 and the other of which designated at 28 enters the rear'mouths 2'5. Because of the arrangement of the mouths shown in Fig. 3 and the sheets of yarn shown in Fig. 2 it will be understood that adjacentyarns are at different distances from the carrier bar, and each yarn will be comparatively free to turn on itself without interference on the part of the adjacent yarns should this be necessary as a knot enters a mouth.

In the modification shown in Fig. 5 the yarn tubes T are secured to a plate 39 similar-to plate 2! and have yarn receiving mouths formed as isosceles triangles, the alternate mouths 3! having their bases 32 a substantial distance from the plate while the intermediate mouths 33 have their bases 34 closely adjacent to and lying along the plate 38. As in the preferred form of the in vention, adjacent triangular mouths have the centers of their areas located at different dis Referring more particularly to the triangular form of the mouths,

the bases of the alternate mouths 3i extend" substantia..-y parallel to but spaced from the plate as indicated in Fig. 5.

In both forms of the invention the tubes will have their mouths formed by tools shaped to produce the round and triangular mouths shown 1 respectively in Figs. 3 and 5. The mouths are integral with the tubes and are essentially contiguous with each other. In the modified form of the invention. all of the space between the aligned bases 32 of the alternate mouths 3i and the plate Si? is available for the formation of mouths. Although this condition is not strictly true of the preferred form of the invention the mouths and have about as much usable area for receiving a knot as do the triangular mouths.

It will be apparent from both Figs. 3 and 5 that the mouths have sharp corners or notches. which might interfere with the entrance of yarns.

Thus, in the preferred form of the invention the mouths of the alternate tubes 25, while being essentially circular in section, are actually formed wi'h a small .restriction or notch 35 pointed toward the bar plate 2E, and the intermediate mouths 128 are similarly formed with a restriction or notch 35*. In like manner the apices 8'? .of the triangular mouths shown in Fig. 5 are formed as acute angles which might interfere with the entry of yarns. V

In order to prevent the yarns and any knotsv in from entering into the

notches

35 and 35 of the circular mouths and the apices of the triangular mouths, provision is made to guide the toward the wider parts of the mouths and away from parts of the latter which might hold-a knot.

A guard or guide G,.shown more particularly in Figs. 7, 8 and 9, can be used with either of the terms of the invention shown in Figs. 3 or 5, but

43 along those edges of the mouths remote from the plate 2|. The bent down part 43 is not essential, but when used will serve as means for entirely closing the mouths and keeping their thin edges from engagement with the yarns.

The guardzone 42 as shown in Fig. 9 is provided with a plurality of preferably circular perforations which are arranged in two parallel rows at difierent distances from the carrier bar. The perforations 45 of the front row correspond to the alternate mouths 25, while those of the rear row, shown at 41, correspond to the intermediate mouths 25. The perforations open downwardly into the wide parts of the mouths under them and guide yarns away from the

restrictions

35 and 35. The center of each perforation is preferably over the center of the mouth area therebelow.

The plate or zone 42 may if. desired have circular funnel shaped flanges 55 struck downwardly therefrom around each perforation to guide the yarns into the corresponding mouths. While of the invention.

In preparing the tube frame for use, and referring more particularly to the preferred form of the invention, the plates 2! with their attached tubes T will be arranged along the length of the carrier bar l6 So that the mouths Z5 and 25 will be spaced at diiferent distances from the plate. if the character of the yarn is such that it can readily enter the mouths without being held by the restrictions or notches S5 and 35 the tube frame may then be ready for use, but if the yarn is. large it is desirable to apply the guard G to the carrier bar it in such position that its perforations will register with the

mouths

25 and 25, The same general procedure will be followed when the triangular mouths are used, the perforations 45 and M registering with the centers of the areas of the triangles.

Each yarn tube, whether of the form shown in Fig. 3 or 5, will have a substantially straight yarn or thread passage 55 therethrough which leads from the corresponding receiving mouth to the delivery mouth therebelow. The yarn passage is located between side walls 5'3 and substantially straight front and back edges 5? and 53, respectively, of the yarn tube. The long dimension of the passage in cross section is perpendicular to the carrier bar. The mouths. Whether circular or triangular, are symmetrical about a plane passing through the edges 51 and 53, as will be understood from Figs. 3 to 5. I

It will be understood from Fig. i that the tubes T are uniformly spaced along the carrier bar and. each tube has assigned to it a space correspond-- ingto the gauge of the tube frame. Thus, if seven yarn tubes are employed to the inch, then /7" will be assigned to each tube, but it will be understood from an inspection of Figs. 3 5 that the mouths are considerably wider than the spaces occupied by or'assigned. to their tubes, and can accommodate larger yarns and knots than could the mouths as formerly made.

the rear edge 58 of tube T, or an extension thereof, while the front part of mouth 28 is about midway between extensions of edges 5? and 58. A similar relation exists with respect to the front mouths 25. Ihe center of each mouth is to one side of or eccentric relatively to the longitudinal axis of the corresponding thread passage, and it is this condition which permits the use of the mouths wider than those heretofore possible.

From the foregoing it will be seen that the invention provides simple means for providing the yarn tubes of an Axminster-tube frame with yarn receiving mouths which are wider than has been possible in prior practice due to the fact that the mouths are located at different distances from the carrier bar and staggered so that each mouth will be at a distance from the carrier bar different from that of the adjacent mouths. This arrangement of the mouths permits the yarns to be divided into the two sheets or planes 2'! and 28, thus affording more space around each yarn to permit a knot in it to turn if necessary to enter its receivingmouth. In the preferred form of the invention the mouths are substantially circular, whereas in the modified form the mouths are triangular, but in both forms of the invention the centers of the areas of the mouths are arranged in two rows or lines which are located at diiferent distances from and preferably parallel to the carrier bar. Also, when heavy yarns are used and it is desired to protect them and any knots in them from the smaller corners of the yarn receiving mouths, the guard G may be used which has perforations registered with the wide parts of the mouths.

Having thus described the invention it will be seen that changes and modifications of the foregoing specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In an Axminster tube frame having a carrier bar provided with yarn tubes having yarn receiving mouths arranged in rows located at different distances from the carrier bar, and a guard supported by the carrier bar extending over said yarn tubes and having perforations registering with said mouths.

2. In an Axminster tube frame having a carrier bar provided with yarn tubes having yarn receiving mouths arranged in rows located at different distances from the carrier bar, and a guard plate supported by the carrier bar extending over and having funnel shaped openings therein registering with and opening downwardly into said mouths.

3. An Axminster tube frame having a carrier bar provided with a row of yarn tubes each of which has a yarn receiving mouth, the centers of the mouths of alternate tubes being farther from the carrier bar than the centers of the mouths of the intermediate tubes, and a sheet metal plate supported by the carrier bar extending over said mouths and having perforations registering with and opening downwardly into said mouths.

4. In an Axminster tube frame having a carrier bar, a yarn spool rotatably supported on the carrier bar over the latter, a series of yarn tubes mounted on and depending from the carrier bar, each yarn tube having an upwardly opening yarn receiving mouth, and a guard supported on the carrier bar extending over said tubes below the spool and having yarn receiving passages therethrough registering with and opening downyvardly into said mouths.

5. An Axminster tube frame having a carrier bar provided with yarn tubes having yarn receiving mouths the centers of which are arranged in two rows parallel to and at diiferent distances from the carrier bar, and a guard supported by the carrier bar extending over the yarn tubes and having perforations registering with said mouths.

6. In an Axminster tube frame having a carrier bar. a yarn spool rotatably mounted on the carrier bar over the latter, a series of yarn tubes mounted on the bar, each tube having a substantially circular yarn receiving mouth, said mouths having their centers arranged in two F lines parallel to and at different distances from the bar, alternate mouths having their centers on one line and the intermediate mouths having their centers on the other line, and a guard extendin over the yarn tubes and having perforations registering with said mouths.

7. In an Axminster tube frame having a carrier bar, a series of yarn tubes mounted on the bar, each tube having a substantially circular yarn receiving mouth, said mouths having their centers arranged in two lines parallel to and at different distances from the bar, alternate mouths having their centers on one line and the intermediate mouths having their centers on the other line, and a guard plate supported by the carrier bar over said yarn tubes and having circular perforations registering with said mouths.

8. In an Axminster tube frame having a carrier bar, a series of yarn tubes mounted on the bar, each tube having a yarn receiving mouth formed as an isosceles triangle, the sides of adjacent mouths lying along and closely adjacent to each other, the bases of alternate triangular mouths extending along close to said carrier bar and the bases of the intermediate triangular mouths being parallel to but spaced farther from the bar than the first named bases.

9. In an Axminster tube frame having a carrier bar, a series of yarn tubes mounted on the bar, each tube having a yarn receiving mouth formed as an isosceles triangle, the bases of alternate triangular mouths extending along close to said carrier bar and the bases of the intermediate triangular mouths being parallel to but spaced far-- ther from the bar than the first named bases, and a guard plate supported by the carrier bar over said yarn tubes and having perforations registering with said mouths.

10. In an Axminster tube frame having a carrier bar. a series of yarn tubes mounted on the bar, each tube having a triangular shaped yarn receiving mouth, the sides of adjacent mouths lying along and closely adjacent to each other, the mouths of adjacent yarn tubes being reversed with respect to the carrier bar.

OSCAR V. PAYNE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,519,987 Bixby Dec. 16, 1924 FOREIGN PATENTS Number Country Date 1,283 Great Britain of 1908 317,193 Great Britain Aug. 15, 1929