Automatic warp stop-motion for warpers.

Application filed March 9,1904. Serial No, 197,292.

To alt whom it may concern:

Be it known that I, Arthur S. Cowan, a citizen of the United States, residing at Worcester, in. the county of Worcester and 5 State of Massachusetts, have invented certain new and useful Improvements in Automatic Warp Stop-Motions for Warpers, of which the following is a specification.

My invention relates to an automatic warp io stop-motion for warpers; and the object of my invention is to provide an improved automatic warp stop-motion; and my invention consists in certain novel features of construction of my improvements, as will be herein15 after fully described.

In my improvements as shown in the drawings and described herein the dropping of adrop-wire when a warp breaks will stop the movement of a reciprocating slide-plate and 2o put into operation mechanism for moving the beam away from the drum, as will be hereinafter described.

I have only shown in the drawings sufficient parts of a warper of well-known construction, .25 with my improvements applied thereto, to enable those skilled in the art to which my invention belongs to understand the construction and operation thereof.

Referring to the drawings, Figure 1 shows 30 a sectional front view of portions of a warper with my improvements applied thereto looking in the direction of arrow u, Fig. 2. Fig. 2 is a plan view of some of the parts shown in Fig. 1 looking in the direction of arrow b, 35 same figure. The table is shown broken away..

Fig. 3 is a sectional view of some of the parts shown at the left in Fig. 1 detached and. in a different position. Fig. 4 shows some of the parts shown at the right in Fig. 2 in a differ40 ent position. Fig. 5 is a detached detail showing the fork-stand and the levers looking in the direction of arrow c, Fig. 1; and Fig. 6 is a sectional detail on line 6 6, Fig. 4, looking in the direction of arrow d, same figure.

In the accom panying dr awings, 1 is the m ain frame br stand for supporting the several parts.

I 2 is a table supported at one end by the frame 1.

is the drum, and 4 the drum-shaft, mount- 5° ed in suitable bearings on the frame 1 and having a revolving motion communicated thereto from some driven part to cause the drum 3 to revolve in the ordinary way.

The warp beam or spool 5, upon which the 55 warp 6 is wound, has rotary motion communicated thereto by frictional engagement with the periphery of the drum 3 in the ordinary way. The swinging or pivoted frame or hanger which supports the warp-beam 5 is 60 ordinarily made in one part, which is pivotally connected with the yoke-shaped end 7' of the vertically-moving upright lever 7, having weights 8 on its lower end and pivotally connected with an extension 9' on the foot-treadle 65 9, mounted on the transverse rod 10; but in my improvements the frame supporting the warp-beam is. made in two parts. The upper ends of the yoke-shaped end 7' of the lever 7 are pivotally connected by pins 11 with one 7° end of two arms 12. The other ends of said arms 12 are pivotally mounted on a rod .13. The arms 12 have downwardly - extending .parts 12', in the lower ends of which is supported a rod 13'. (See Fig. 3.) The rod 13 75 forms the pivot-rod for the arms 12 and the parts connected therewith. The warp-beam hanger 14 is made separate from the arms 12 and is pivotally connected with the pins 11 and has a yoke-shaped end to receive the warp- 80 beam 5, which in this instance has pinsdv extending out from its end to fit into recesses in the hanger-arms and be held thereon by latches 15.

Pivotally connected with the two arms of 85 the hanger 14 by pins 16, intermediate the ends of the arms 12 and the warp-beam 5, is the yoke-shaped end of the sustaining-lever 17, which has a rearwardly^extending curved arm 17'. Upon the under side of the arm 17' 9° is a toothed surface 17, adapted to engage a toothed projection 18' on a shoe 18, fast on a transverse rod 19, as shown. The arm 17' of the sustaining-lever 17 has a plate 17' at779,073 a

tached thereto, the lower edge of which is adapted forest on a roll 20 on a stud 20', held by a nut 20 in the slotted end 21' of the supporting armor stand 21, secured in theyoke5 shaped end 7' of the lever 7 (see Fig. 5) to hold the teeth 17 out of engagement with the toothed projection 18' during normal working conditions by contact with surface of 17'.

io I will now describe my improvements in the warp stop-motion for automatically moving the warp-beam 5 out of contact with the drum 3 on the breaking of a warp-thread.

The warp-threads 6 pass over a series of 15 transverse rods 22, mounted at each end on a stand 23 on the table 2. On each warp-thread is suspended a drop-wire 24. In this instance the drop-wires 24 are arranged in four series and made in the form of hooks, as shown in 20 Fig. 1. The lower ends of the drop-wires 24 extend down between the guide-bars 25, secured at their ends to the stands 23. Extending directly below the transverse guide-bars 25 is a plate 26, (see Figs. 2 and 4,) having in 25 this instance four longitudinal openings 26' therethrough, corresponding to the number of sets of drop-wires 24. The openings 26' in the plate 26 extend in the same direction as the guide-bars 25, and said openings 26' are 30 adapted as the plate reciprocates to pass directly under and in the path of the drop-wires 24, so that on the breaking of a warp-thread and the dropping of the wire 24 thereon the lower end of the wire will pass through one 35 of the openings 26' in the plate 26 and between the lower set of transverse guide-bars 25', supported directly below the plate 26, and thus arrest the motion of said plate and through intermediate mechanism to be here4° inafter described automatically move the warp - beam 5 out of engagement with the drum 3.

The plate 26 is attached to and supported on a reciprocating rod 27, mounted in bear45 ings 28, secured to the upper side of the table 2. On the rod 27 is fast the head 29' of a pin 29. The lower end of said pin 29 is pivotally connected with the end of an arm 30, the hub 30' of which is fast on the upper end of a stud 50 31, which is loosely mounted in a boss 31', which extends through and is secured in an opening in the table 2. (See Fig. 6.)

Fast on the lower end of the stud 31 is the hub 32' of an arm 32, which carries a pin 33, 55 on which is pivotally mounted the hub 34' of a lever 34. The hub 32' has extending down therefrom projections 32, in which is supported a spring-actuated pin 35, having an enlarged end 35^x, which is adapted to bear 60 against a flat portion 34 on the hub 34' of the lever 34. (See Fig. 4.) A small spiral spring 36 encircles the pin 35 between the projections 32, as shown in Fig. 6, and actuates the pin 35. One end of the lever 34 has an opened end slot 34' therein to receive a 65 pin 37' on the horizontally-moving rod 37, supported and having a bearing in a bracket 38, secured to the under side of the table 2, as shown in Fig. 1. The end of the rod 37 is pivotally connected with the forked end 39'of 7° the eccentric-rod 39, attached to the eccentric 40 on the drum-shaft 4. Through the eccentric 40, eccentric-rod 39, rod 37, lever 34, leverarm 32, stud 31, lever-arm 30, and pin 29 reciprocating motion is communicated, through 75 the rod 27, to the plate 26, the spring-actuated pin 35 acting to hold the lever 34 in a line with the lever-arm 32, as shown in Fig. 2, to move as a single lever. To the opposite end of the lever 34 from the opened slotted end 34' is 80 pivotally attached by a pin 41 a rod 42, having a horizontal reciprocating motion in a hanger 43, secured to the under side of the, table 2. (See Fig.· 1.) It will of course be obvious that the reciprocation of rod 42 is not 85 constant, but only occurs when the plate 26 is stopped by a drop device and part 30 can no longer move.

On the rod 42 are two enlarged portions 42', which are adapted to engage the forked 9α ends of. the two angle-levers 43 and 44, pivoted, respectively, on pins 45 and 46 under the table 2. The angle-levers 43 and 44 are connected by a pin-and-slot connection at one end, as shown at 47, to have a simultaneous 95 motion. The other ends of the levers 43 and 44 are made forked-shaped or slotted to receive the longitudinally - moving rod 42, as shown. To the slotted erid of the angle-lever 44 is pivotally attached by a pin 48 one end 100 of a rod 49. The other end of said rod 49 is pivotally attached to a crank-arm 50, fast on a rock-shaft 51, mounted in suitable bearings on stands 52, secured to the upper part of the frame 1. (SeeFigs. 1 and 3.) Extendingup 105 from and fast on the rock-shaft 51 is an arm 53, which is connected by a link 54 with an arm 55, loose on the rod 13'. On the rod 13' is also loosely mounted an arm 56, connected by a link 57 with a rearwardly-extending pro- no jection 14' on the hanger 14. The arm 56 is adapted to be engaged by a projection 55' on the arm 55.

From the above description, in connection with the drawings, the operation of my warp 115 stop-motion for automatically moving the warp-beam from the drum upon the breaking of a warp-thread will be readily understood by those skilled in the art. The means for supporting the warp-beam 5 will be in the po- ^I2o sition shown in Fig. 1, with the beam 5 in frictional contact with the drum 3 and held there by the weights on the lever 7 in the ordinary way. The rod 13 forms the pivot for the arms 12 and for the hanger 14 of the 125 warp-beam 5, and the.pivoted arms, &c., are held in the position shown in Fig. 1. The revolution of the shaft 4 through eccentric

779,073 and intermediate connections gives a reciprocating motion to the plate 26 under the drop-wires 24. On the breaking of a warpthread and the dropping of a wire 24 the 5 lower end of the wire will enter one of the openings 26' in the plate 26 and one of the openings between the lower set of guide-bars 25', and thus prevent the continued reciprocating motion of said plate; but the continued io rotary motion of the eccentric 40 through eccentric-rod 39 and the rod 37 will move the lever 34 against the action of the spring-actuated pin 35 into the position shown in Fig. 4 and through rod 42 and the knob 42' there15 on engaging the lever 43 will move said lever and also the lever 44, as shown in Fig. 4, and through the rod 49 move the crank-arm 50, rock-shaft 51, arm 53, link 54, and arm 55. The movement of the arm 55 will cause the 20 projection 55' thereon to engage the arm 56 and move said arm and link 57, connected with the projection 14' on the hanger 14, from the position shown in Fig. 1 to the position shown in Fig. 3, and the toothed portion 17 on the 25 lever 17 will engage the stop 18' on the shoe

18. As the arm 56 and link 57 are moving from the position shown inFig. 1 to the position shown in Fig. 3 the action of the weights carried by the lever 7 causes the warp-beam 30 5 to be raised from the drum 3, as shown in

Fig. 3. The arm 17' is held by the teeth 17 thereon engaging the projection 18' on the shoe 18. After the broken warp-thread has been fixed the attendant operates the foot35 treadle 9 to raise the weights 8 and the lever

7, and at the same time he operates the arm 17' to disengage the teeth 17 from the projection 18' and cause the pivot or fulcrum of the hanger 14 of the warp-beam 5 to shift 4° from the pins 16 to the rod 13 and the arms and connections to change from the position shown in Fig. 3 to the position shown in Fig. 1 preparatory to the continued operation of the warper.

It will be understood that the details of construction of my improvements may be varied, if desired, and they may be adapted.to be used on other machines, if desired.