US774696A - Traverse mechanism for warper-combs. - Google Patents

Description

No. 774,696. PATENTED NOV. 8, 1904.

A. E RHOADES. TRAVERSE MECHANISM FOR WARPER OOMBS.

APPLIGATION FILED JUNE 23, 1904.

I0 MODEL. 3 8HEETSSHEBT 1- PATENTED NOV. 8, 1904.

I A. E. RHOADES. TRAVERSE MECHANISM FOR WARPER GOMBS.

APPLICATION FILED JUNE 23, 1904.

3 SHEETSSHBET 2.

NO MODEL.

PATENTED NOV. 8, 1904.

A. E. RHOADES. TRAVERSE MECHANISM FOR WARPER GOMBS.

APPLICATION FILED JUNE 28,1904.

mums-sum a.

N0 MODEL.

UNITED STATES Patented. November 8, 1904.

PATENT OFFICE.

ALONZO RHOADES, OF HOPEDALE, MASSACHUSETTS,ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

TRAVERSE MECHANISM FOR WARPER-COIVIBS.

SPECIFICATION forming part of Letters Patent No. 774,696, dated November 8, 1904.

Application filed June 23, 1904..

To (0Z7 whmn it may concern:

Be it known that I, ALoNzo E. RHoADEs, a

citizen of the United States, residing in Hope dale, in the county of Worcester and State of Massachusetts, have invented an Improvement in Traverse Mechanism for VVarper- Combs, of which the followingdescription, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to warping-machines wherein the comb through which the warps pass to the beam is traversed or reciprocated to lay the warp evenly upon the beam.

In some special classes of warping the adjacent warp-threads are separated from each other by a considerable space, varying from, say, one-quarter of an inch to an inch, and in such warping the comb is reciprocated to lay the several warp-threads in contiguous groups upon the beam. Heretofore, so far as I am aware, the traverse of the comb has been effected by or through a crank-motion and trouble has been experienced because of the ridged or corrugated winding of the warp upon the beam. This is due to the peculiarity inherent in a crank-motion because of the dwell when the crank travels over dead-center, the result being a dwell of the warper-comb at such times, while the winding of the warp upon the beam continues. The mass of warp laid is consequently a little higher at each end of the wound mass than between the ends, it being understood that each warp-thread, or it may be a group of warp-threads, is laid upon the beam [in a mass the width of which is equal to the length of the traverse or stroke of the comb. Such winding is objectionable for various reasons, one of which is the variation in tension of the warps when unwinding from the beam in the subsequent treatment of the warps-that is, when the warps are unwinding from the ends of the yarn masses the tensionwill be different from that when the warps are drawing off from the portions of the yarn masses of smaller diameter.

My present invention has for its object the production of novel traverse mechanism for Seria Ila 213,802. (N0 model.)

warper-combs,wl1ereby the objections hereinbefore noted are obviated, the several adjacent yarn masses as laid upon the beam having a uniform diameter from end to end.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is an end elevation of a warpingmachine of substantially well-known construction with one embodiment of my novel traverse mechanism for the comb applied thereto, a portion of the beam being broken out to economize space. Fig. 2 is a rear elevation, centrally broken out and on a larger scale, of the comb, its carriers or supports, and a portion of the traverse mechanism, the combcentering means being also shown. Fig. 3 is a sectional detail,enlarged,on the line 3 3, Fig. 1, looking toward the left, of a portion of the traverse mechanism, showing the traversecam and the means for adjusting the stroke of the comb. Fig. 4 isa transverse section on the line 4 4, Fig. 2, looking to the right, of one of the comb-supports and a portion of the transmitting means between it and the traverse-cam. Fig. 5 is a sectional detail on the line 5-5, Fig. 4, of a portion of the appa' .ratus shown in Fig. 4, to be referred to. Fig. 6 is a perspective view, detached, of the casting shown in Figs. 2 and 4 secured to the lefthand end of the comb, said casting having a supporting-bearing for one of the journals of the whip or guide roll. Fig. 7 is an enlarged sectional detail on the line 7 7, Fig. 1, looking toward the right, of the means for imparting movement to the traverse-cam. Fig. 8 is a side view of the traverse-cam detached; and Fig. ,9 is a sectional detail on the line 9 9, Fig.' 3, of the adjusting device by which the traverse of the comb is regulated.

The warper in connection with which 1 have herein illustrated my present'invention is substantially such as shownin United States Patent No. 624,541, and, having more especial reference to Fig. 1, the winding-drum D, beam B rocker-arm d, having the pivoted latch d thereon, the shipper b and knock-off lever 6, and the normally vibrating arm a, ful crumcd at a and having a stud a to cooperate with the latch (Z and release the shipper when the arm a is arrested, as when a warpthread breaks or runs out, may be and are link 4 with the lower end of the vibrator a,

so that the latter rocks the bell-crank, an inwardly-extended stud 5 on the vibrator, Fig. 7, connecting the latter with the link 4. The shorter arm 2 of the bell-crank has pivoted thereon at6an upturned, elongated, and bent link 7, as herein shown, jointed at its upper end at 8 to a pawl-carrier 9, whose hub 10 is mounted to rock on a short rotatable shaft 11. As best shown in Fig. 1, a stand 12, secured to the warper-frame, has bearings 13 14, in which the shaft is mounted, an upright web 13 on the bearing 13 having a tubular boss 15 for a purpose to be described. Between the bearing 13 and the pawl-carrier the hub of a ratchet 16 is secured to the shaft, and a cooperating pawl 17 is fulcrumed at 18 on the outer end of the pawl-carrier, the latter having an upturned ear 19, (best shown in Fig. 7,) carrying a pin 20, which is extended loosely through a hole in the tail 21 of the pawl, the tail being offset, as shown in Fig. 1. A spring 8 is coiled around the pin beneath the tail and serves to keep the pawl in cooperative engagement with the ratchet, and a spring-detent pawl or finger 22 prevents retrograde rotation of the ratchet. Each vibration of the vibrator a will, through the described connections, operate the pawl-carrier and effect the rotation of the ratchet 16 and shaft 11 one step.

A traverse-cam 23, (shown separately in Fig. 8,) is secured to the shaft 11 at its rear end adjacent the bearing 13, said cam having a cam path or groove 24 in its side, entered by a roller or other stud 25, projecting from the adjacent face of a traverse-lever 26, ful crumed at 27 in the boss 15 and depending therefrom. In Fig. 3 the cam is shown in the position corresponding to mid-stroke of the comb, and the cam-groove 24 is substantially heart-shaped, providing for an immediate change of movement at the end of the comb-stroke without any dwell, the traverse being uniform between the ends of the stroke. Such a cam, having no dwell portion, may be termed a continuous-motion cam.

The traverse-lever is undercut along its longitudinal edges (see Fig. 9) to receive a correspondingly-recessed block 28, having a prolongation at one side of the lever provided with a stud 29 for a purpose to be described, the block being longitudinally adjustable on said lever 26 and held in adjustedposition by a set-screw 30, engaging the face of the lever opposite that on which the stud is mounted. From an inspection of Fig. 3 it will be manifest that the nearer the block 28 to the free end of the traverse-lever 26 the greater will be the amplitude of its path of movement, such amplitude decreasing as the block is moved nearer the fulcrum 27, the block being movable substantially the length of the lever.

The stud 29 enters a long slot 31 in an upturned transmitting-lever 32, fulcrumed at its lower end at 33 on a bracket 34 on the main frame, the levers 26 and 32 having their ful era in parallelism, and, as shown in Fig. 1, the levers swing in separate but parallel planes, the levers in Figs. 2 and 3 being shown at the instant they are in parallelism longitudinally. The slot 31 permits the adjustment of the block 28 on the traverse-lever, as hereinbefore described, and of course the swing of the transmitting-lever 32 will be the greater the nearer the adjustment of the block 28 to the lower or free end of the traverse-lever.

When the block is opposite the stud 25, the stroke of the traverse and transmitting levers will be just the same as the throw of the cam, increasingly greater as the block is moved downward, and less than the cam-throw as the block ismoved upward beyond the stud, so that by properly adjusting said block the stroke of the comb can be varied within wide limits. The rotation of the traverse-cam is effected at a proper low speed by the means described, the step-by-step movement of the cam being convenient as the pawl is actuated by a vibrating member of the machine, and, furthermore, said stepby-step movement takes the place of speed-reducing gearing to bring the speed of rotation of the traversecam down to the desired rate. By the stepby-step rotation of the traverse-cam a practically uniform movement of the comb is secured throughout the stroke, for each dwell is no greater than that required for the comb to reverse its movement at the end of the stroke, and the yarn is consequently laid evenly.

Instead of having a continuous movement throughout the stroke with a considerable dwell at each end, as in the crank-actuated traverse, with consequent building up of the yarn at the ends of the traverse, the present structure divides the large dwell up into a multitude of small dwells distributed uniformly and evenly throughout the stroke, with no greater pause at the end of the traverse than occurs at any of the intermediate dwells.

Referring to Fig. l, I have shown a boss 35 on the rear face of the transmitting-lever 32, the back of the boss being grooved in continu: ation of the slot 31 to permit free movement of the stud 29 when the block 28 is adjusted,

the boss having projecting from it at right angles to the lever a stud 36. This stud loosely enters a hub 37, Fig. 1, laterally extended from one end of a long link 38, extended inward toward the center of the warping-machine and fulcrumed at its opposite end (see Fig. 2) at 39 to an elongated arm 40, secured to or forming a part of one of the oscillating comb-carriers.

The rear elevation, Fig. 2, in connection with Fig.4, best illustrates the construction of the comb-carriers, of which there are two, one at each side of the machine, and practically alike, save that the one at the right has no arm corresponding to the fulcrum-arm 40 for the link 38 described. A bracket 41 on the main frame, Fig. 1, has fulcrumed thereon at 42the hub 43 of the comb-carrier, comprising an elongated upturned body 44, provided with a head 45, having upturned ears 46, with their inner faces parallel to receive freely between them the comb-box O, which latter may be of usual construction and provided with teeth or dents (1*. As shown by dotted lines, Fig.2, the top of the head between the ears is slightly rounded at each end at 47 and it isrecessed or grooved at 48 in the direction of the length of the comb, Fig. 4,

for a purpose to be described, the head at front and rear of the groove presenting seats on which the comb is vertically sustained. In practice the seats are very flat arcs struck from the center of the fulcrum 42 as a center. Below the rearmost ear 46 a cylindrical boss 49 is formed, having a circular bore to receive a round block 50, Figs. 2 and 5, having a transverse threaded hole 51. passage 52 therein intersecting its circular bore and, as shown in Fig. 5, of greater diameter than the threaded hole 51 in the block 50. It may be stated here that through the connecting-link 38 the comb-carrier described will be oscillated on its fulcrum 42 by or through the rotation of the traverse cam and the intermediate traverse and transmitting levers 26 32 and their adjustable connection, such oscillation being transmitted to the comb by means now to be described.

A casting (shown separately in Fig. 6) is secured to each end of the comb-box C, said casting comprising an elongated base 53, havinga plane upper face, (to rest against the bottom of the combbox,) with a longitudinal central rib 54 on its under face and convex in cross-section. (See Figs. 4 and 6.) At its outer end the base is provided with a depending leg 55, having a hub '56 at its lower end, said leg being located at the edge of the base nearer the main frame of the machine, while at its opposite edge and nearer its inner end the base is provided with a broad upturned flat ear 57. A web 58 on the outer face of the ear carries a sleeve-like bearing 59, parallel to the comb-box and'adapted to support The boss 49 has a one of the journals ta of the whip-roll or guide WV, Fig. 1, over which the warps pass 61, having an enlarged head 62, apertured to rotatably receive the reduced end of an adjusting-screw 63, which is screwed into the threaded hole 51 of the round block 50, Figs. 2 and 4, the screw passing through the passage 52 in the boss 49, the passage being large enough to afford ample clearance for the screw. At its outer end the latter has secured to it a circular nut or head 64, by means of which the screw can be readily rotated in one or the other direction for purposes of adjustment. As shown in Fig. 4, a pin retains the stud 61 in place in the hub 56.

Inasmuch as the comb-box and casting are rigidly connected, the screw 63 forms a positive adjustable connection between the combboX and the adjacent comb-carrier, so that oscillation of the latter by or through the traverse-cam will impart the reciprocation or traverse of the comb. The desired traversehaving been attained by adjustment of the traverse-lever block 28, the comb itself is then centered, as required, by proper rotation of the centering-screw 63 at the left, Fig. 2, so that when the comb-carriers are at either end of their strokes the comb will be in position to properly lay the warp at either end of the beam B Vhen the centering of the comb is attained, the right-hand adjusting-screw 63, Fig. 2, will be turned in or out, as required, to level the comb should it have been lifted at either end by the centering adjustment, as may happen owing to the manner in which the comb is supported, such leveling bringing the bodies 44 of the two combcarriers into parallelism. The screws 63 are in the nature of longitudinallyadjustable links pivotally connected at 61 and 50 with the comb and the comb-carrier, respectively, it

being obvious that the oscillation of the left hand comb-carrier, F ig. 2, by positive connection with the traverse-cam will effect the reciprocation of the comb through the screws 63, the latter being alternately under tension and compression.

When the comb-carriers are at mid-position, as shown in Fig. 2, they will be at right angles to the comb-box, and the casting-bases 53 rest squarely upon the seats formed by the top of the heads 45, and there is a slightroll ing contact between the two parts as the combcarriers oscillate. The rounding of the seatcorners 47 prevents any lifting or unseating of the bases when the comb-carriers are at the ends of their strokes, and the recesses &8 provide clearance at the same time for the guideribs 5 I, which latter not only strengthen the bases of the castings, but also act as guides for the comb-box.

The adjusting-screws 63 rock on their fulcra 61 in upright planes, and their inner ends change their angular position relatively to the comb-carriers, such changes being permitted by the rocker-blocks 50 and the clearancepassages 52 in the bosses 4E9.

Inasmuch as the bearings 59 for the whip or guide roll W are rigid parts of the castings secured to the comb-box, it follows that said roll and comb will be traversed in unison to lay the warp smoothly and evenly upon the beam.

Along transmitting-link, as 38, is employed between the adjacent comb-carrier and the traverse mechanism in order to provide for the various desired adjustments without cramping the parts or their movements and to give a smooth free movement to the comb.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be changed or modified in various particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a warping-machine, a comb, mechanism to traverse the same, including a rotatable cam, and means to rotate the cam step by step.

2. In awarping-machine, a comb, a whip or guide roll adjacent thereto, and means, including a rotatable, continuousmotion cam, to traverse said comb and roll in unison.

3. In a warping-machine, a comb, comb-carriers on which it is supported, positive and adjustable connections between but permitting relative movement of the comb and combcarriers to center and level the comb, and means to rock the comb-carriers and by their oscillation effect traverse of the comb.

I. In a warping-machine, a comb, its box, upturned, rocking comb-carriers having seats upon which the comb-box is supported, positive connections between the comb-box and the comb-carriers, permitting relative angular movement of the same, and mechanism, including a traverse-cam, to oscillate said combcarriers and thereby cause traverse of the comb.

5. In a warping-machine, a comb, its box, castings rigidly connected with the ends thereof and each having a bearing, a whip or guide roll mounted in said bearings, oscillating supports for the comb-box, and mechanism to oscillate the same and thereby traverse the comb and roll in unison.

6. In a machine of the class described, a comb, oscillating comb-carriers with which it is connected, traverse mechanism, including a rotatable cam and adjustable transmitting connections between it and the comb-carriers, a ratchet rotatable with the cam, and a cooperating actuating-pawl operated from amoving part of the machine, to rotate the cam step by step.

7 In a machine of the class described, a comb, oscillating comb-carriers, adapted to support and guide the comb and angularlymovable with relation thereto, means to center and level the comb and connect it with the comb-carriers, a traverse-cam, and connections between it and the comb-carriers to oscillate the latter and effect traverse of the comb.

8. In a machine of the class described, a continuous-rnotion traverse-cam, means to rotate it step by step, a comb, transmitting connections between it and the cam to effect traverse of the comb, and means to adjust said connections to vary the stroke of the comb traverse.

9. In a machine of the class described. upturned comb-carriers fulcrumed at their lower ends, a comb connected therewith, one of said carriers having an elongated arm near its up-v per end, a rotatable traverse-cam, traverse and transmitting levers adjacent each other and fulcrumed at their opposite ends, a follower-roll on the traverse-lever and cooperating with the cam, a connection between said levers, adjustable longitudinally thereof, to vary the stroke of the transmitting-lever, and a link pivotally connected with the latter and with the comb-carrier arm, to effect oscillation of the comb-carriers and traverse of the comb.

10. In a machine of the class described, a comb, oscillating supporting means therefor, a rotatable traverse-cam, a depending traverse-lever having a cooperating roll and fulcrumed at its upper end, an upturned, adjacent transmi tting-lever fulcrumed at its lower end, said levers swinging in parallel planes, a connection between said levers and adjustable toward and from the fulcrum of the traverse-lever, to vary the amplitude of their oscillation, and apositive connection between the transmitting-lever and the comb-supporting means, to actuate the same and efiect traverse of the comb.

11. In a machine of the class described, a comb and comb boX, upturned oscillating comb-carriers having their heads shaped to receive and support the comb-box, a depending leg attached to each end of the latter, a longitudinally-adjustable connection between each leg and the adjacent comb-carrier, fulcrumed on the leg and having a rocking attachment with the comb-carrier, whereby the comb may be centered and leveled, and traverse mechanism operatively connected with said comb-carriers, to oscillate the same and eifect traverse of the cam.

12. In a machine of the class described, a comb and comb box, upturned oscillating comb-carriers having their heads shaped to receive and support the comb-box, a depending leg attached to each end of the latter, a longitudinally-adjustable connection between each leg and the adjacent comb-carrier, fulcrumed on the leg and having a rocking attachment with the comb-carrier, whereby the comb may be centered and leveled, arotatable traverse-cam, adjustable connections between it and the comb-carriers, to oscillate the latter and traverse the comb, and means to rotate the traverse-cam step by step.

13. In a machine of the class described, a comb and comb-box, upturned, oscillating comb-carriers having their heads shaped to receive and support the comb-box, a depending leg attached to each end of the latter, a longitudinally-adjustable connection between each leg and the adjacent comb-carrier, fulcrumed on the leg and having a rocking attachment with the comb-carrier, whereby the comb maybe centered and leveled, acontinuous-motion traverse-cam, a pawl-and-ratchetactuating device to rotate the cam step by step, and adjustable transmitting connections between the cam and comb-carriers to oscillate the same. 7

1%. In a machine of the class described, oscillating comb-carriers positively connected with and having angular movement relative to the comb, means on said comb-carriers to retain the comb in operative position, a rotatablecontinuous-motion traverse-cam, and adjustable connections between it and the comb-carriers to oscillate the latter and effect uniform traverse of the comb.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses:

GEORGE OTIS DRAPER, ERNEST W. VVOOD.

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