US2160554A - Harness cam control - Google Patents

Description

May 30, 1939. E. MESSER HARNESS CAM CONTROL 4 sheets-shet 1 Filed Sept. 1, 1938 UAMMM l I I I l l l I l l l l I I l IIIWN May 30, 1939.v E. MESSER y 2,160,554,

HARNESS 6AM CONTROL Filed Sept. l,v 1958 4 Shee'LS-Sheeil 2 grime/who@ E. MESSER 2,160,554 y HARNESS CAM CONTROL May 3o, 1939.

Filed Sept. l, 1938 4 Sheets-Sheet 5 M ay 30, 1939. E, MESSER 2,160,554

HARNESS CAM CONTROL 4 Sheets-Sheet 4 File'd Sept. 1, 1938 Patented May 30, 1939 muriel) STATES HARNESS CAM CONTROL Edward Messer, Kannapolis, N. C., assigner tov Cannon Mills CompanyKannapolis, N. C., av

corporation of North Carolina Application September 1, 1938, Serial No. 228,064

4 Claims.

This invention relates to a new and improved harness cam control for looms and is designed particularly for looms for weaving terry cloth.

An object of the invention is to provide means for a plain o-r cam loom for reversing the shedding so as to reverse the terry in order that the warp thread or pattern appearing upon one side of the cloth maybe continued upon the opposite side so as to produce a clothY having the pattern upon opposite sides reversed and with the terry weave continued perfectly.

A further object of the invention is to provide clutch control means under the control of high balls on a pattern chain or the like for controlling the cams provided, which in turn control the treadles for the harness for the terry warp,

whereby Warp of contrasting colors may be rey versed from the top to the bottom or vice versa.

A still further object of the invention is to utilize the clutch means mentioned above for controlling the Weave of ordinary towels with the usual three pick terry which is the incorporation into the body of the towel of a row of loops or piles at every third pick of the loom.

A further object of the invention is to provide simplified means for changing the sequence of operation of the cams upon the treadles so as to reverse the colors in the warp.

`A still further object of the invention is to 30 provide means for controlling the stopping stations of the cams so as to insure proper operation of the clutch means.

A further object of the invention is to associate the clutch release cam with the driving gear for the ground warp.

With the above objects in view and others which will appear hereinafter, the invention includes the arrangement and combination of parts hereinafter more fully described, and shown in the accompanying drawings in which:

Figure 1 is a side elevation, partly broken away and with portions of a plain loom omitted for greater clarity illustrating the invention;

Figure 2 is .a front elevationalview with p0rtions of the loom broken away and omitted;

Figure 3 is a fragmentary plan view illustrating particularly the cam and clutch construction for controlling the operation of the harnesses;

Figure 4 is a cross-sectional view with parts in elevation of the cam and clutch controlling means;

Figure 5 is a cross-sectional View taken on the section line 5 5 of Figure 4 looking in the direction of the arrows, and

Figure 6 is a diagrammatical view on an eniarged scale of a portion of the cloth illustrating the reversal of the terry. v

In the weaving of terry cloth, the particular pattern begun must generally be continued throughout the length of the cloth, unless a Jacquard mechanism or a high price dobby loom is used. With the present invention, it is possible to Weave upon a plain or lcam loom terry cloth having variousv designs and to change from one to another and continue weaving in perfect order Without breaking thepattern and without producing an imperfect place in the cloth. Thus, a stripe or block of any ycolor may be the beginning of the pattern upon one side of the cloth while upon the reverse side Adirectly opposite such stripe or block the'latter will not beV affected. A change may be made in the design at any point so that the stripe 'on one side may terminate and be transferred to the opposite side kof the cloth while the differently colored stripe upon the opposite sidegwill be transferred so as to form a continuation of the other colored stripe or block.

In the drawings in which similar reference characters indicate like parts, the ground warp beam is shown at 5 and the pile warp beam at 6. The Whip roll for the ground warp is illustrated at I and the let-off roll for the pile warp at 8. A companion roll 9 cooperates with the let-off roll 8. The ground warp G from the beam 5 passing over the whip roll l' is divided between the rear harness frames IIJv and II, While the pile Warp T is divided between the front harness frames I2 and I3.

The rear harness frames I0 and II are connected together by straps I 4 whichextend over rollers I5 mounted on an oscillatable shaft I B supported by the fixed bearings I'I on the loom frame.

The front harness frames I2 and I3 are connected together by straps I8 which extend over rollers similar to the rollers I 5 which are secured to the oscillatable shaft I9 which is mounted in the xed bearings 2U provided on the loom frame.

The pile warp T is preferably of contrasting colors and the invention is particularly directed to the means for contro-lling the dividing of the pile warp by the harness frames I2 and I3. The terry forming mechanism has been omitted but may beof any desired type.

The loom is provided with the usual shaft 2l and on this shaft is lxed .a pinion 22 which meshes with the pinion 23 xed to the auxiliary shaft 24 mounted in suitable bearings.

The shaft 2l is also provided with a pinion 25 which meshes with a gear 26 rotatably mounted on the shaft 24. The gear 26 is xed to a tubular shaft 21 which rotates on the shaft 24. Also mounted on the tubular shaft 21 and fixed thereto is a collar 28 having an enlarged portion 28 provided with diametrically opposed slots 38 in which are located the lugs 3| on a sleeve 32 axially slidable upon the collar 2B.

The sleeve 32 is provided with a circular groove 33 in which engages the forked end 34 of the lever 35 pivotally mounted upon the pin 36 attached to the loom frame work. The movements of the lever 35 are controlled by the pattern chain and a cam which will be described below.

Rotatably mounted upon the tubular shaft 21 between the gear 26 and the collar 28 are the cams 31 and 38. The cams 3 1 and 38 are integral with the hub portion 39 or may be xed thereto. 'I'he hub portion 39 on the side facing the sliding sleeve 32 is provided with a collar portion 49 in which areprovided spaced apertures 4| also designed to cooperate with the lugs 3| of the sliding sleeve or clutch` element 32. The collar 48 is preferably provided with six equally distanced spaced apertures 4|. Referring to Figure 3 it will be noted that the lugs 3| always extend to some extent into the slots 38 upon the enlarged portion 29 of the collar 28, but when the lever 35 is swung .in the direction of the arrow in this figure, the lugs 3| will xtend through the slots 39 and into the slots 4i,thereby coupling the hub portion 39 with the cams31 and 38 to the sleeve 32vwhich in turn is coupled with the collar 28. When such action takes place, the gear 26, the hub 4portion 39 and the collar 28 will rotate as a unit with the tubular shaft 21 on the shaft 24.

In order to ensure the proper alignment between the slots 4| and the slots 38 at Ythe clutching stations, the hub 39 is provided on the side opposite the collar 48 with a collar 42 in which are provided arcv shaped depressions 43 with which a roller 44 cooperates. The roller 44 is rotatably mounted on the pin 45 secured to the lever 45. One end Vof the lever 46 is screw threaded as shown at 48 and threads into the socket member 49, which in turn is pivotally mounted on the stud shaft 41 between the collars 58 fixed to the stud shaft. The stud shaft 41 is mounted in an extension 5| of the loom frame.

vThe threading of the lever 46 in the socket member 49 permits an exact positioning of the brake roller 44 so as to ensure a proper alignment of the slots 43, 4| and 30.

The other end of the lever 46 isprovided with a notched portion 52 in which engages the wire ,which in turn is connected to a spring 54 which is secured at its other end to the loom frame at any desired position. The spring 54 urges the roller 44 against the collar 42 at all times.

As above mentioned, the gear 23 is fast to the shaft 24. Also secured to the shaft 24 are the cams 55 and 56 which are integrally connected together. These cams control the shedding of the ground warp, while the cams 31 and 38 con trol the shedding of the pile warp. The treadle levers 51, 58, 59 and 68 cooperate with the cams 55, 56, 31 and 38 respectively. The treadle levers are pivotally mounted at one end upon the shaft 5i and each is provided with a cam roller 62 held in contact with the respective cam. The free ends of the treadle levers are connected by the straps 63 to the harness frames I8, Il, I2

and I3.

' over the pin 12.

The controls for the lever 35 which in turn controls the operation of the cams 31 and 38 will now be described. Fixed upon the shaft 24 is a. cam disc 64 having a cam track 65. A cam roller 66 cooperating with the cam track 65 is pivotally connected to one end of the lever 61 which is fixed in turn to the shaft 68 rotatably mounted in the loom frame extensions 69. Also xed to the shaft 68 is a lever 10 which has a slot 1| in which is adjustably fixed a pin 12 as by means of the collars 13. A connecting rod 14 is loosely connected at one end, as particularly shown in Figure 3, to the lever 35 and the other end of the connecting rod 14 is of hook shape as shown at 15 in Figure 2 and engages The connecting rod 14 is guided by the guide member 15 fixed in any desired way to the loom frame. In order to permit adjustment of the lever 35 such lever is threaded into a socket member 11 which in turn is pivoted on the pin 36. The nuts 18 and 19 threaded upon the lever 35 encloses the end of the connecting rod 14 which is connected to the lever 35. In the construction shown, the connecting rod 14 is provided with an eye 88 which can be slippedinto position over the lever 35 when the lever 35 is disconnected from the socket member 11. y v

The spring 8|Y is connected at one end to the loom frame and the other end is connected to a wire 82, which in turn is secured to the lever 19 and byl this means the cam roller 66 is held in contact with the cam track at all times. Also secured to the loom frame is a spring 83 which is secured to a wire 84 secured in turn to the socket 11 and the spring 83 tends to hold the lugs 3| engaged in theapertures 4| until released therefrom by the action of the cam roller upon the raised portion of the cam track. The springs 8| and 83 supplement one another in their action.

, The other control for the lever 35 and consequently the clutch mechanism is from the pattern chain and is shown particularly in Figures l and 2. The chain rack is shown at 85 and pivoted thereto is the high ball lever`86. The free end of i the high ball lever 86 is pivotally connected to the rod 81 at one end and the other end of the rod 81 ispivotally connected to one arm of the bell crank lever 88 which is pivotally connected to the loom 'frame at 89. The other arm of the bell crank lever 88 is pivotally connected at one end of the rod 98 whose other end is pivoted at 9| in an eye provided at the end of the lever'14. A high ball going into contact with high ball lever 86 will raise the same, pivot bell crank lever 88 and liftthe end of the lever 14 thereby disengaging the hook portion 15 from the pin 12.

The gear 26 is preferably provided with sixtyv three teeth and the driving pinion 25 on the shaft 2| is provided with twenty-one teeth. The shaft 2| may be driven from any desired moving part of the loom. The cam 55 is a double pick cam and the cam 58 isa single pick cam. The cams 31 and 38 have a configuration as shown particularly in Figure 5. One complete revolution of the cams 31 and 38 is equal to 9 picks in the cloth. The raised portion of the cam truck 65 will disengage the clutch after the shed is formed for the third pick, thereby bringing the cams 31 and 38 to a complete stop. The clutch will again engage after the first pick. The third and the first pick are exactly alike making one complete repeat. A point on cam 38 being directed downwardly will depress treadle lever 60 and bring harness frame I3 downwardly and the harness frame I2 controlled by treadle lever 59 is brought upwardly for the first pick, after which the clutch becomes engaged. A point on cam 31 being brought downwardly depresses treadle lever 59 and brings harness frame I2 downwardly and harness frame I3 upwardly for the second pick. Then a point on cam 38 again depresses treadle lever 60 with a movement downwardly of harness frame I3 and a movement upwardly of harness frame I2 for the third pick which is exactly like the first pick with the one difference being in the beat up which is after the third pick. 'Ihis is the operation when the cams 31 and 38 are subjected to the control from the cam disc 64, the clutch being disengaged during the first and third picks.

When the colors are reversed in the pile warp, the cams 3l and 38 operate exactly opposite. In this case whenever a high ball on the pattern chain lifts the high ball lever 86, the rod 90 will disconnect the hook shaped end 'I5 from the pin 'I2 thereby preventing a disconnection of the clutch by the raised portion on the cam track 65. This will permit the cams 31 and 38 to remain in operation for three consecutive picks, which in x turn will change the motion of the pile warp harness frames I2 and I3 to the opposite from that which they were weaving. For instance, if the harness frame I3 was weaving two picks up and one pick down this will be changed to the harness frame I2 weaving two picks up and one pick down, Since the cams are three point cams and are positioned oppositely on the tubular shaft 21, any operation due to the high ball on the pattern chain will permit the clutch to remain engaged for three picks in succession. This will reverse the order of the cam points and in turn reverse the order of action of the harness frames.

With regard to the ground warp cams and 56, these make one complete revolution every three picks or one repeat. Without the clutch releasing cams 64, 65, and 66 one would get merely a two harness weave effect in the cloth, but with the cam construction mentioned in Contact all the time, it is possible to get the plain terry weave effect in the cloth.

Figure 6 illustrates the reversal of the terry which is secured when a high ball operates the lever 'I4 and allows the clutch to remain engaged for three consecutive picks.

I claim:

1. A harness control for looms for weaving terry cloth comprising a gear rotated by a moving part of the loom, a double pick cam and a single pick cam continuously rotated by said gear controlling the harness frames for the ground warp, a cam disc also continuously rotated by said gear,

a second gear also rotated by a moving part of the loom, freely mounted cams for controlling the operation of the harness frames for the pile warp, means for coupling said freely mounted cams with said second gear, means operated by said cam disc controlling said coupling means and means for rendering said means controlling said coupling means inoperative in order to reverse the operation of the harness frames for the pile warp.

2. A harness control for looms for weaving terry cloth comprising a gear rotated by a moving part of the loom, a double pick cam and a single pick cam continuously rotated by said gear controlling the harness frames for the ground warp, a cam disc also continuosly rotated by said gear, a second gear also rotated by a moving part of the loom, freely mounted cams for controlling the operation of the harness frames for the pile warp, means for coupling said freely mounted cams with said second gear, means operated by said cam disc controlling said coupling means and means operated by a pattern chain, for rendering said means controlling said coupling means inoperative in order to reverse the operation of the harness frames for the pile warp.

3. A harness control for looms for weaving terry cloth comprising a shaft, a gear rotated by a moving part of the loom continuously rotating said shaft, a double pick cam and a single pick A cam fixed to said shaft controlling the harness frames for the ground warp, a cam disc fixed to said shaft, a tubular shaft rotatably mounted upon said shaft, a gear fixed to said tubular shaft and rotated by a moving part of the loom, cams rotatably mounted on said tubular shaft controlling the harness frames for the pile warp, means for coupling said last named cams to said tubular shaft and means operated by said cam disc controlling said coupling means.

4. A harness control for looms for weaving terry cloth comprising a shaft, a gear rotated by a moving part of the loom continuously rotating said shaft, a double pick cam and a single pick cam xed to said shaft controlling the harness frames for the ground warp, a cam disc fixed to said shaft, a tubular shaft rotatably mounted upon said shaft, a gear fixed to said tubular shaft and rotated by a moving part of the loom, cams rotatably mounted on said tubular shaft controlling the harness frames for the pile warp, means for coupling said last named cams to said tubular shaft, means operated by said cam disc controlling said coupling means, and means for rendering said means operated by said cam disc inoperative at predetermined intervals.

EDWARD MESSER.

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