US1493251A - Loom - Google Patents

Description

May 6 J. E. DUELKS LOOM Filed Jan. -25

1923 3 Sheets-Sheet l May '6 1924.

.1. E. DUELKS LOOM Filed Jan. 25 1925 Sheets- Sheet 2 Patented May 6, 1924. 5

iaeazsl JACOB E. 'DUELKS, OF- HYDE PARK, MASSACHUSETTS.

I 7' LOOM.

Application filed January 25,.1923Q Serial No. 615,318.

To all whom it may concern.

Be it known that I, JACOB E. DUELKS, a citizen of the United States, residing at Hyde Park, in th county of Suffolk andv State of Massachusetts, have invented certain new and useful Improvements in Looms, of which the following is a specification.

The present invention relates to improvements in looms of the kind used in the weaving of fabrics, and more particularly to those of the type employing a swinging lay and shuttle-picker mechanism, for driving the shuttle through the shed formed by the warp threads, thus interweaving the weft and warp threads. The primary object of the invention is to provide a simplified and improved picker mechanism which is relatively simple in construction and operative by a cam -or equivalent part on the loom frame, in consequence of the to-and-fro beats of the lay, thus utilizing the relative movements between the lay and the loom frame as its source of motion and power.

Another object of the invention is to provide novel and improved safety means for preventing collision between the shuttle which is in use and another shuttle which might happen to reach a position ona level with the shuttle race, the safety means provided by the present invention being operative automatically to render the picker mechanism inactive, although allowing the.

loom to continue to run idly in the event a second shuttle has reached the shuttle race level and hence is in th path of the operative shuttle.

To these and other ends, the invention consists in certain improvements and combinations and arrangements of parts, all as will be hereinafter more fully described, the

features of novelty being pointed out particularly in the claims at the end of the specification. I

In the accompanying drawings Figure 1 is an elevation of'one end of the lay of a 100m, looking from the. rear and toward the front thereof, the same embodying the picker mechanism and the safety means of the present invention;

Figure 2 represents an elevation of the structure shown in Figure 1 and looking toward the left-hand side thereof;

Figures 3 and 4: are detail views of the actuating cam for the picker mechanlsm, the

operation of the cam being indicated diagrammatically.

Figure 5 is a rear elevation of the cam :and its mounting, as viewed from the right in Figure 3, and

Figure 6 isa top plan view of one of the shuttle magazines and the cooperative feeler finger.

Similar parts are designated by the same reference characters in the several views.

The present invention, either in whole or in part, is applicable generally to looms of "various kinds, such for example, as those iusedin makingbroad silk, woolen, worsted and cotton fabrics, and wherein the weft threads are interwoven with the warp threads'by a shuttle which. is carried by a reciprocating lay and is driven back and forth through the sheds formed in the warp threads by picker mechanism. The prel'ferred embodiment of the invention is shown i111 the accompanylng drawings and will be hereinafter described in detail, but

it is to be understood that the invention is not restricted to the precise construction shown, as equivalent constructions are contemplated and these will be included within the scope of the claims.

In the present instance, 1 designates a part of the stationary main frame of the loom, 2 designates the lay which extends transversely of the length of the 100m and provides on its upper surface a raceway along which the shuttle 3 may travel, f represents one of the lay swords and 5 is the pivot or center about which the lay swings in making its to-and-fro beats. As is usual in looms of this type, the lay swings to-and-fro about its transverse pivot or axis 5 in a direction longitudinally of the loom and it works in timed relation with the shed-forming mechanism of the loom which may be of the usual kind. The opposite ends of the lay project beyond the respective sides of the loom frame and each of these projecting ends of the lay may carry a magazine 6 to contain a supply of shuttles, each of which may be brought into use in the usual or any other suitable way, by bringing the respective box 7 of the magazine on the same level with the shuttle race.

secured preferably to one of the lay swords,

the outer end of the picker shaft having an arm 11 fixed thereto and provided with a picker 12 which operates in a direction longitudinally of the shuttle race and in unison with the reciprocatory movements of the lid picker shaft 8. The picker shaft at each end of the lay is actuated at the appropriate times to drive the shuttle on its picks by means which operates in consequence of the to-and-fro beats of the lay and through the instrumentality of a cam fixed on the main frame of the loom. Preferably and as shown in the present instance, a whip 13 en gages at its upper end in a slot 14: formed in the picker shaft 8 and this whip is fixed at its lower end to a shaft 15, the latter being journalled in the lower portion of the bracket 10. A tension spring 16 which is attached to the whip 13 and to the bracket 10 acts to retract the picker shaft. The whip shaft 15 also has a whip rocker 17 fixed to its forward end and this whip rocker is connected by a stud or .bolt 18 to a whip rocker lever 19. The latter is connected by the universal joint 20 to a pin or pivot 21 which is carried by an arm 22, the rear end of this arm being fixed to a shaft 23 which is journalled in the bearings 24 formed. in the upper part of the bracket 10. By this construction, vertical movements of the arm 22 about the axis of the shaft 23 as a center, will cause lateral. or substantially horizontal swinging movements of the whip 13, the latter in turn causing reciprocation of the picker shaft 14. A spring 25 is preferably provided for the purpose of yieldingly sustaining the picker 12 in a position to be engaged by the shuttle and to arrest the movement of the shuttle without shock. A coil spring is .1preferably used which encircles the shaft 23, substantially as is shown. The shaft 23 also has an arm 26 which is fixed thereon and this arm carries a roller or projection 27, the path of movement of which carries it past a cam 28 which is suitably mounted on the main frame. Preferably and as shown in the present instance, the cam 28 is mounted at its lower end on a pivot 29, the latter be ing supported on a bracket 30, and the bracket 80 is bolted or otherwise secured to the respective side of the mainframe. The bracket 30 is also provided with a standard 31 which is adapted to provide an abutment for the cam, it being advantageous to fit this portion of the bracket with a set-screw V 32 by means of which the limit of movement oft-he cam about its pivot 29, in one direction can be accurately adjusted. A spring 33 acts on the cam to swing it toward and into engagement with the set-screw 32, although permitting the cam to be swung forwardly and downwardly or in a direction away from the set-screw or abutment 32. The operative face 34c of the cam is preferably of a concave contour; that is to say, its inclination to the vertical is greater at the upper end of the cam and it diminishes as the lower end of the cam is approached. The rear face 35 of the cam is preferably convex.

The mode of operation of the picker mechanism, as hereinbefore described, substantially as follows: When the lay is at the limit of its forward swing, the roller 27 of the picker mechanism will occupy a position in front of the relatively fixed cam 28 and as the lay swings rearwardly, the roll er 27 will move in a corresponding direction until it reaches the position A (Fig. 3) at which time the roller engages the upper portion of the cam, the latter at this time being sustained in its operative position, as shown in Figure 3, by the abutment on the bracket 30. As the rearward swing of the lay continues, the roller 27 will traverse the forward face 34: of the cam, the inclination of this face of the cam causing the roller 27 to travel downwardly with accelerating speed until it reaches the position '3 in Fig ure 3, whereupon this roller will pass beneath the lower end of the cam and as the rearward motion of the lay continues, the v roller will assume the position C in Figure of the cam. The sudden downward defiection of the roller 27, incident to its passage beneath the cam, causes a correspondingly sudden downward deflection of the arms 22 and 26, and this motion is transmitted to the whip rocker lever 19, so that the latter produces a sudden stroke of the picker shaft 8 toward the opposite side of the m, thus driving the shuttle on its pick. The springs 16 and 25 operate to restore the picker shaft to its normal position and to return the roller 27 to its normal level with respect to the cam 28. The im mediately following forward swing of the lay carries the roller 27 from the position D to and past the position E in Figure 4;. this movement of the roller 27 causing it to engage the rear face of the cam and to defleet the cam forwardly or into substantially the position shown in Figure l, the cam snapping back against the abutment or setscrew 32 as soon as the roller 27 passes over its upper end, the cam being thus restored to a position tooperate onthe roller 27 in the manner hereinbefore described, to actuate the pickenmechanism to propel the shuttle on its pick. It will be understood that the picker mechanism at the opposite sides of the loom,'which may be substantial dupli= cates, will operate in the same manner, but they will operate alternately during the beats of the lay to drive the shuttle on its picks.

The present invention alsoprovides safety 'neans for automatically rendering the picker shuttles and which, if it occurred, would cause damage. The safety means for accomplishing this result comprises in the present instance a feeler finger 36, one of which is provided at each end of the lay, each feeler finger having a portion adapted to bear' against the swell '7' for that shuttle box of the magazine which is level with the shuttle race, the swell-projecting into such shuttle box when the latter is empty and being pushed outwardly when such box contains a shuttle. The feeler finger is pivoted-at 37 to a suitable bracket38, the latter being fixed to the lay or to the fixed part of the frame of the shuttle magazine, as shown, and the lower end of the feeler finger is provided with an angularly extending arm 39, to which is attached a wire or cable 42. The wires or cables 42, operative by the feeler fingers at the opposite ends of the lay, are connected together in the middle of the loom by a looped chain or other flexible member 43, which passes over pulleys 44 attached to a bracket 45, which latter is fixed to the lay, and the loop 43' is engaged by a pulley 46 carried by a vertical member 47. The lower end of the vertical member 47 is connected to cables or chains 48, the inner and outer ends of which pass around pulleys 49 and 50 at the respective sides of the loom and are attached to the eye 51 at the upper end of the respective cam 28. The feeler finger 36 is located preferably at or near the entrance to the respective shuttle box and when the operating shuttle is at one side of the loom in front of the respective picker 12, the swell in the side of the shuttle box in operative position will be pushed outwardly, causing the feeler finger 36 at that side of the loom to be rocked about its pivot 37 in a direction to cause a pull to be exerted on the cord or cable 42, this pull being transmitted to the cord or cable 42 at the opposite side of the loom and thus causing the feeler finger at the latter side of the loom to push inwardly the swell in the side of the shuttle box at that side and which is level with the shuttle race. If no shuttle is in front of the picker at the opposite side of the loom, the swell, is free to move inwardly under force exerted on it by the respective feeler finger acting in response to the pull on the cords orc ables 42; the vertical member 47 will then exertno pull .on .theccords or cables 48. However, should a shuttle bepresent -in front of .the picker atthe opposite side of the loom, the swell engaged by the feelerfinger at that side of thezloom will engage such shuttle, so that the feeler finger can not moveinwardly, in consequence of which the'pull exerted onvthe cord 42, owing to the presence of a shuttle in front of the picker;

which is about to makeia pick, will betransmitted through the member 47 to'the cords or cables 48 and these cables will be there by caused to draw the cams 28 downwardly out of the paths of the respective rollers 2'? The picker mechanisms at both sides of the loom will be thereby renderedinactive, as the to-and-frofbeats ofvthe lay, consequent uponcontinued running of the loom, will take place idly or without actuating the.

picker mechanisms. The loom canbe readilyc restored'to operative condition by removingone of the shuttles.

Picker mechanism constructed in, accordance with the present invention is simple in construction, it utilizinguthe' swinging beats of the lay relatively to the. main frame to produce the picking motions, through the agency of a cam which is so shaped and arranged that it will positively produce the picking motions at properly timed intervals. The picker mechanism may be used either with or without the safety means for pre venting collision between shuttles should more than one shuttle occupy positions in the shuttle raceway, but when used in conjunction with the safety means, the loom is protected from damage by means which is simple and inexpensive and can be readily applied to the loom.

I claim as my invention 1. In a loom having a lay on the main frame, picker mechanism mounted on the lay, a cam on the main frame, and means carried by the lay and including a part which rides on said cam, in consequence of the beats of the lay, to actuate said picking mechanism and cause it to throw the shuttle.

2. In a loom having a main frame and a lay mounted to swing relatively thereto, picker mechanism mounted on the lay, a cam on the main frame, and means which participates in the swinging movements of the lay and includes a part which periodically contacts with and is operable by said cam in consequence of such movements, to impart picking movements to the picker mechanism.

3. In a loom having a main frame and a lay mounted to swing relatively thereto, picker mechanism mounted on the lay,- an actuating member which participates in the swinging movements of the lay, and acam on the main frame arranged in the path of said member and operative to deflect said -& 1,493,251

member and thus impart a picking stroke to said picker mechanism in consequence of swinging movement of the lay.

4. In a loom having a main frame and a lay mounted to swing relatively thereto, picker mechanism mounted on the lay, an actuating member therefor mounted to participate in the swinging movements of the lay and also to move transversely with respect to the direction of movement of the lay, and a part on the main frame arranged in the path of said member and operative to deflect said member transversely in consequence of swinging movement of the lay, thereby imparting a picking stroke to said picker mechanism.

5. In a loom having a main frame and a lay mounted to swing relatively thereto, picker mechanism mounted on the lay, an actuating member mounted to participate in the swinging movements of the lay, and a cam mounted on the main frame in the path of said member and having a face extending transversely of said path to engage said member and deflect it transversely of the direction of movement of the lay.

6. In a loom having a main frame and a lay mounted to swing relatively thereto, picker mechanism mounted on the lay, an

actuating member therefor mounted to participate in the swlnging movements of the lay, and a cam mounted on the main frame in the path of said actuating member, said cam occupying a position to actuate said member incident to the swing of the lay in one direction and being deflected out of the path of said member incident to vthe swing of the lay in the opposite direction.

7. In a loom having a main frame and a lay reciprocatory with respect thereto, picker mechanism mounted 'on the lay, an actuating member therefor which participates in the swinging movements of the lay, and a pivoted part on the main frame in the path of said member, said part having means for holding it in a position to engage and actuate said member incident to the movement of the lay in one directionand yieldable out of the path of said member incident to the movement of the lay in an opposite direction.

In testimony whereof I have hereunto set my hand.

JACOB E. DUELKS.

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