US2482975A

US2482975A - Weft tension take-up for looms

Info

Publication number: US2482975A
Application number: US791788A
Authority: US
Inventors: Gosnell Hardy Bruce
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-12-15
Filing date: 1947-12-15
Publication date: 1949-09-27
Anticipated expiration: 1966-09-27

Description

Sept. 27, 1949. H. B. GOSNELL WEFT TENSION TAKE-US FOR LOOMS 6 Sheets-Sheet 2 Filed Dec. 15, 1947 HAeoY b. GosNeLL,

INVENTOR.

ATTORNEY Sept. 27, 1949. H. a. GOSNELL WEFT TENSION TAKE- UP FOR LOOMS 6 Sheets-Sheet 3 Filed Dec. 15, 1947 HARD) B. GOSNELL ATTORNEY Sept. 27, 1949. H B. GQSNELL 2,482,975

WEFT TENSION TAKE-UP FOR LOOMS Filed Dec. 15, 1947 6 Sheets-Sheet 4 HARDY E1 GO5NELL' INVENTOR.

ATTORNEY p 7, 1949. H. B. GOSNELL 2,482,975

WEFT TENSION TAKE-UP FOR LOOMS Filed Dec. 15, 1947 6 Sheets-Sheet 5 e LJg;

HA PDY B. GOSNELL & I ATTORNEY p 1949- i H. B. GOSNELL 2,482,975

WEFT TENSION TAKE-UP FdR LQOMS Filed Dec. 15, 1947 1 6 Sheets-Sheet 6 HARDY b. GosmELL,

INVENTOR.

ATTORNEY I Patented Sept. 27; 1949 WEFT TENSION TAKE-UP FOR LOOMS Hardy Bruce Gosnell, Slater, S. C. p Application December 15, 1947, Serial No. 791,788

6 Claims. I (Cl. 139-194) This invention relates tolooms and more especially to a device for holding tension in the weft or filling yarns between the edge of the fabric and the shuttle box as the shuttle is in the box and as it is being forced out-of the shuttle box with the object of avoiding kinks or loops in the filling being left in the cloth.

' The principal object of-the invention is to provide a device which may be used with equally good results to insure the tension in the filling being properly held until bound in the cloth by the changing of the shed or beat up of the lay of the loom whether the filling be strong or exceedingly weak. a

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which Figure 1 is atop'pl'an view of the loom showing one form of my invention near each end of the lay of the loom;

Figure 2 is a fragmentar isometric view showing my invention near the left-hand end of the Figure 3 is an elevation with parts in section showing the lay in the foremost or beat-unposition and being taken substantially along the line 3-3 in Figure 1;

Figure 4 is a view similar to Figure 3 but showing the parts in a difierent position;

Figure 5 is a top plan viewof a loom and is similar to Figure l but showing a modified form of the invention a plied to opposed ends of the y;

Figure 6 is a vertical sectional view taken substantially along the line 6-6 in Figure 5 and showing the modified form of the invention applied near the right-hand end of the lay with the lay in beat-up position; 1

Figure 7 is a vertical sectional view similar to Figure 6 but showing the parts in a different position; I

Figure 8 is an isometric view of the modified form of the invention as itappears when applied to the right-hand end of the lay of the loom. i I i -Referring more specifically to the drawings, the numeral It indicates the left-hand vertical side'frame member of a loom and the numeral ll indicates the right-hand vertical side frame member of the loom. Secured between the vertical side members It and H is a breast beam H to one end of which is secured a plate I! by means of a bolt [8. The plate I! is a part of a conventional magazine, not'shown'. Another plate I9 connects the breast beam [4 to the side frame "I in a conventional manner. Disposed between the vertical side frame members In and I I are vertically disposed swords l2 and I3 which are oscillatably mounted on a rocker shaft, not shown; and have oscillatably mounted near their upper ends and on stub shafts 20 and 2| respectively the forward ends of pitman rods l5 and I6 respectively. 1

A conventional lay 23 is secured to the swords l2 and [3 by means of

bolts

24 and 25, respectively, and the la 23 has secured thereto a conventional race plate 26. The lay 23 extends beyond the frame members Ill and l I at each end and has integral therewith

conventional shuttle boxes

28 and 29 which consist primarily of a front box plate 30 and a binder 3|.

By referring to Figure 1 there maybeobserved in the left-hand shuttle box 28 a shuttle in which is disposed a bobbin 36 and the end of the shuttle 35 is engaged by a picker stick 31, a

similar picker stick 38 being shown in the shuttle box 29. I

The lay 23 and the raceplat 26 having coinciding cut out

portions

35 and 48 therein normally used in which a grate for a filling feelerapparatus is but which is not employed in the operation of this mechanism and is thus omitted.

Secured to the upper ends of the swords l2 and i3 respectively by means of bolts and 48 are angle clips 41 and 48 which extend forwardly .as at 49 and 50 and have secured therebetween and the lay 23 is a vertically disposed reed 5 6 whichhas passing therethrough a plurality of Warp yarns 51 which extend forwardly and merge with a cloth portion 58. The parts which have heretofore been described are the principal conventional parts of a loom with which my invention is associated and the following parts are those comprising my invention.

Since the parts of the present invention as applied to the left-hand end of the lay 23 in' Figure 1 are identical to the parts at the right-hand end thereof, except being opposite hand, only the parts at the left-hand end of the lay 23 will be described and like parts at the right-hand end of the lay will bear like reference'charac-- ters with the prime notation added. y

The vertical side frame member [8 extends upwardly' as at (Figure 4) and has secured to a webbed portion 61 thereof a bolt BE which secures on one side thereof by clamping, a horizontally disposed cani member or bar 5Q tends downwardly and forwardly and is secured to the binder 3| at its lower end by means of a screw 18.

The portion 1| is bent at right angles to form a portion 14 which projects forwardly and downwardly as viewed in Figure 1 and is bent transversely to form a portion 18 which is oscillatably mounted in bearings 80 which are secured, by any suitable means such assnot welding, to a horizontal portion 8I of an angle bracket having an upturned portion 82 which is secured to the vertical surface of the angle clip 01 by any suitable means such as a screw 85. It is manifest that the upturned portion 22 of the angle bracket is secured by screw 8-5 to the angle cli 48.

The horizontal portion 18 of the shaft II extends through the bearings 80, and to the right as observed in Figures 1 and 2 and. as may be observed. has threadably mounted thereon a nut 81. Adjacent the nut 81 is a downwardly projecting finger 88 which is secured on the shaft 18 by another nut 80 which is threadablv secured on the shaft 18. It is thus seen that the finger 88 may be adjusted between the nuts 81 and 80 whenever such is required.

By referring to Figures 1, 2. 3 and 4 there may be observed that part of the invention which has just been described. Figures 1, 2 and 3 show the lay 23 in its forward position at which time the follower wheel 10 is in its lowermost position and the finger 88 has its free end disposed at the front side of the lay to thus engage and draw a weft or filling thread 38a forwardly to maintain tension in the same after the shuttle has passed out of the shed of the warp yarns 51 and into the box 28 and to hold the same in this position during the return travel of the lay and as the shutt e is about to be thrown out of the shuttle box 28 to again form another weft or pick across the cloth 58.

As the lay 23 moves backwardly, or to the left in Figures 3 and 4, the follower wheel 10 will ride on the bar 66 and will'be raised upwardly as shown in Figure 4. In so doing, the lower end of the finger 88 will be moved in a clockwise direction in Figure 5 and will be moved out of the path of the shuttle 35 as it is about to be thrown across the plate 26 of the lay 23. The finger 88 is curved slightly so as to' clear the back of the race plate when the lay 23 is at the back of its stroke to thus allow the shuttle to pass by the finger 88 when it is thrown across the lay 28 by the picker stick 31. The free end of the finger 88 moves through the cut out portion 38 as the lay 23 is oscillated. The pivot point of the finger 88 as well as a depending finger I I1, to be described, could be at a higher elevation, if desired, to thus avoid curving se fi s- By refen'ing to Figures 5, 6, 7 and 8 there may be observed a similar apparatus to that just described for performing the same function as the structure just described and it is particularly for use on the right-hand end of the lay and is a modification of that part of the invention which has heretofore been described. Either form may 4 be used on both ends of the lay if desired as shown in Figures 1 and 5.

Since the modified form of the invention is particularly designed for the right-hand end of a loom, only the right-hand end in Figure 5 will be described and at the other end, it being identical except opposite hand, like parts will bear like reference characters with the prime notation added.

Secured to the plate I1, by any suitable means such as a bolt I00, 'is a strap member I02 which extends upwardly and rearwardly and is twisted as at I03 to form a vertically disposed leaf member I04. The strap member I02 is, Of course, secured by the bolt I00 to the plate I8. The leaf portion I04 has a cam-like surface I05 which is engaged by an inverted U-shaped rod IIO.

The rod H0 is transverse of the leaf portion I04 and has downwardly projecting portions III and H2 (Figures 6, 'l and 8). The portion II2 extends downwardly and is bent longitudinally of the lay to form a shaft portion I I3 which is oscillatably mounted in bearings H5. The rod IIO extends through the bearings II5, as at H3, and extends downwardly and forwardly as at II1 to thus form a downwardly projecting finger portion similar to that of the downwardly projecting finger 88 at the other end of the lay heretofore described. It may be noted that the downwardly projecting finger II1 of the rod IIO passes through the slot 40 to thus engage the filling yarn as it is moved in a forward direction at its lower end.

The bearings H5, in which the rod H0 is oscillated as at II8, are secured, .by any suitable means such as spot welding, to a plate I20 which has an upwardly extending portion I2I which is secured to the vertical face of the angle clip 48 by any suitable means such as a screw I22. The upwardly extending portion I2I' of plate I20 at the other end of the reed cap 52 is, of course, secured to the angle clip 41 by the screw I22. The plate I20 has a rearwardly extending portion I25 which has the upper end of a tension spring I21 secured thereto.

By referring to Figure 6 it may be observed that the downwardly projecting portion I I2 of the rod I I0 has secured therein a shaft I28 which extends downwardly and has a looped portion I30 to which the lower end of the tension spring I21 is secured. The spring I21 urges the rod IIO to remain in engagement with the cam surface I05 of the leaf member I04.

When the lay 23, as observed in Figure 7, is in its rearmost position the shed formed by the warp threads 51 will permit the shuttle to be thrown across the lay or race plate 26 and as the lay moves forwardly or to the left, as viewed in Figures 6 and 7, the cam surface I05 will raise the upper finger portion of the U-shaped rod I I0 and will thus move the downwardly projecting portion H1 in a clockwise manner and as the shuttle leaves the shed formed by the warp yarns 51, the

weft or filling yarn 3611, which is drawn through by the shuttle 35, will be picked up by the lower end of the downwardly projecting finger Ill and will take up the slack in the filling yarn 36a to thus prevent any kinking of the weft yarn 36a near the edge of the cloth 58.

It is obvious that as the lay returns from the position shown in Figure 6 to the position shown in Figure '7, the lower end of the downwardly projecting finger II1 of the rod III! will move in a counterclockwise direction to the position shown in Figure 'l and will thus permit the shuttle to return across the lay to start another cycle in the forming on the cloth 58.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. In a loom having a lay with a shuttle box disposed at each end of the lay and the lay having a reed cap and a reed associated therewith, and also having a race plate, the race plate and the top of the lay on its upper face having transverse grooves disposed adjacent the ends of the reed cap, an oscillatable member disposed adjacent each end of the reed cap and having a finger projecting downwardly therefrom, fixed means on the loom adapted to engage the oscillatable member and swing its finger laterally to engage a filling castacross from one shuttle box to the other end to move the filling laterally to exert tension thereon after the filling has been extended from one shuttle box to the other and during the beat up operation.

2. In a loom having a lay and a shuttle box at each end thereof and having a reed cap and a reed therein and also having a race plate disposed on top of the lay, the shuttle boxes being adapted to receive a shuttle cast across from one end of the lay to the other, an oscillatable member mounted adjacent each end of the reed and having a downwardly projecting finger thereon and the race plate and top of the lay being cut transversely to provide a transverse groove in which the lower end of the downwardly projecting finger is adapted to oscillate, tension means for holding the finger out of the path of the shuttle and fixed cam means disposed on the loom for engaging the oscillatable means for moving the finger across the race plate and in said groove for moving a filling laterally to take up slack therein during a beat up operation, the tension means being adapted to return the finger out of the path of the shuttle when the lay moves away from beat up position.

3. In a loom having a lay provided with a race plate on the top thereof and having a transverse groove adjacent each end of the lay and a shuttle box disposed on each of the extreme ends of the lay, an oscillatable member disposed above and 'to one side of the top of the lay and having a downwardly projecting finger secured on one end thereof and adapted to have movement transversely of the lay in said groove, the oscillatable member having a crank portion and a fixed cam member for engaging the crank portion of the oscillatable member for moving the downwardly projecting finger transversely of the lay to engage a filling to move the filling out of a direct alignment to take up slackness therein dm'ing a beat up motion of the lay andtension means for moving the oscillatable member to cause its downwardly projecting finger to move out of the path traveled by the shuttle as the lay moves away from beat up position.

4. In a loom having a lay provided with a shuttle box at each end thereof, a pair of sword; for

' supporting the lay and a reed cap supported by the swords, a pair of plate members supported by the swords and having an oscillatable member mounted therein, said oscillatable member having a downwardly projecting finger fixed thereon, for movement transversely of the lay, and said oscillatable member having a crank portion thereon, tension means for normally moving the oscillatable member to a position to move the downwardly projecting finger transversely of the lay to engage a filling and move it out of a straight line for taking up slack therein, a cam member fixed on the loom and engageable with the crank portion for moving the oscillatable member against its spring tension to swing the downwardly projecting finger out of the path of the shuttle while the lay is moved away from a beat up position.

5. In a loom having a lay provided with a shuttle box at each end thereof for boxing a shuttle and having a reed through which warp threads are adapted to be passed for a weaving operation, said lay having transverse slots in its upper surface adjacent each end of the reed, an oscillatable member having a downwardly projecting finger swingable transversely of the lay in said slots and disposed at each end of the lay of the loom, tension means normally holding the finger out of the path of the travel of the shuttle, said oscillatable member having a crank arm thereon and cam ,means fixed on the loom for engaging the crank arm for moving the downwardly projecting finger transversely of the lay to engage a filling during a beat up operation to move the filling out of a straight line to remove any slack therein during a beat up operation.

6. In a loom having a lay provided with a race plate on the top thereof and having a transverse groove adjacent each end of the lay and a shuttle box disposed on each end of the lay, an oscillatable member disposed above and to one side of the top of the lay and having a downwardly projecting finger on one end thereof and adapted to have movement transversely REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 982,862 Peterson Jan. 31, 1911 1,052,929 Lindsay Feb. 11, 1913 1,388,537 weithaase Aug. 23, 1921 2,147,602 Perry Sept. 8, 1938