US2165890A - Pile wire motion for looms - Google Patents

Description

July 11, 1939. v w, FOSTER 2,165,890

FILE WIRE MOTION FOR LOOMS Filed Ja 22 193 3 Sheets-Sheet 1 i 1 I l l.

J. W. FOSTER FILE WIRE MOTION FOR LOOMS Fil ed Jan. 22, 1938 :5 Sheets-Sheet 2 James- M7. RJ ier,

July '11, 1939.

July 1939. FOSTER v 2,165,890

PILE WIRE MOTION FOR LOOMS Filed Jan. 22, 1938 s Sheets-Sheet :5

Jam es W Easter,

Patented July .11, 1939 r UNITED STATES PATENT OFFECE PILE WIRE MOTION FOR LOOMS James William Foster, Freehold, N. J. Application January 22, 1938, Serial No. 186,421

1 Claim. (Cl. 13942) My invention relates to a wire motion mechahertofore using other difierent forms of wire nism for inserting and withdrawing the pile wires operating mechanism. in the looms for the manufacturing of tapestry Still another object of the invention is to procarpets or other pile fabrics, and has for an obvide a wire motion wherein the length of the iect to provide a mechanism that is simple and stroke for operating the hopper or clamp may be positive and arranged for great accuracy in ad- Carefu y dj ed d a er W ch a further justment micrometric adjustment may be made between A further object of the invention is to so mm the driving pinion and a bevel gear, so that any struct the mechanism that the hopper or clamp fractional part of a tooth may be allowed for, or, will travel at two rates of speed, that is, the clamp n feet, the adjustment y be e to W th n a will be withdrawn on the slower motion and inthousandth of an inch. sorted during the quicker motion. With these and other objects in view, the instill n th r bj ct of the in ti i t provention consists in certain new and novel feavide a wire motion for pile ir looms that i tures and combination of parts, as will be hereinrelatively simple in construction and eliminatafter more fully exp and P d out n the ing a number of parts heretofore necessary in the claim. operation of the pile wire mechanisms. Referring HOW to the dPaWihgS S ow g a pre- Still another object of the invention is to prof d embo iment and that much of a wire movide a mechanism for inserting and withdrawing tiOn for a m as necessary to strate the the pile wires that will be exceedingly sturdy in present invention, construction and so designed that it will with- 1 is an end elevation With e pp or stand the hard usage to which a loom of this kind Clamp about midw y s travel a d the actuating i bj t d, means in the correct relative position;

Still another object of the invention is to pro- 2 s a fragmentary p plan VieW Showing Vide a wire motion for looms wherein th the wire-actuated mechanism and several of the justments as to the length of the stroke and the Wires that are t be p a timing may be regulated to a fine degree of ac- 3 is n enl r e l view how n the curacy, as not only is means provided for kdriving mechanism for the cable that actuates ing what might be termed ordinary adjustments, the wires, the mechanism being in the position at but means is provided for making micrometric the starting of the 100m; adjustments, so that a loom provided with a wire Fig. 4 is a Similar View but Showing the p s motion, about to be described, may be stepped up at the end of the outward stroke and likewise the from thirty-eight picks a minute to between end of the Outward mevement 0f the Cable;

forty-two and V Fig. 5 is a vertical sectional View showing the Still another object of the invention is to mierometric adjustable gear; provide a wire motion that will cut down the Fig-61$ a bottom plan VieW ereof; usual breakage of the pile wires, as I have found 7 is an enlarged Sectional V ew taken on in practice that where the ordinary loom will the line of Fig usually break from twelve to fourteen pile wires 3 s a a d Sectional View taken on ma certain period of time, the present device the line of 1; will cut down such loss from three to four during 9 is an enlarged fragmentary sectional View the Same period of time taken on the line 99 of Fig. 1.

Still another object of the invention is to pro- Referrmg now to the drawings it will be under Vide a Wire motion that permits of a less number stood that I have shown only a detached part of i" i v 5 of parts than heretofore cons1dered necessary; the bum frame togebher with enough of v improved wire motion or mechanism sufficient to provide? a smo?ther motmn for the 100m gntafls enable those skilled in the art to understand the less ad usting t1me and, as heretofore mentioned, construction and Operatmn thereof enables 100m to be n twenty to thirty Referring for the moment to Fig. 1, there is per {lent hlghel" rate of Speed, shown the frame 6 with the leg or pedestal 2 Still another object of the invention is to protogether with the other supports 3. vide a wire motion that W111 be positive in 210- If the mechanism is to be attached to certain tion, easily adjusted, easily regulated, and with types of looms now in use, an additional frame relatlvely few parts to get out of order. Also, member twill be inserted, to which will be secured the mechanism may be easily attached to looms the lower frame member 5. Pivoted, as at 6, in

the lower frame member 5 may be seen the lever "I with its slot 8 formed therein, and to the left side of the lever (Fig. 1), it will be seen that there is the lug or ear 9, which is provided with a series of adjusting holes III, to one of which will be pivotally secured an adjustable connecting link II, shortly to be described.

Mounted just to the rear of the lever 1 is the relatively large crank disk I2, on which is adjustably mounted a stud I3, which is provided with the key portion or slide block M at its inner end to fit in the undercut guideway I 5 formed in the crank disk I2, the stud being adjustable through the provision of the screw I6. Closely fitting about the stud I3 may be seen the bronze block Il, which will be held in position by the washers I8 and the nut I9. Thus, as the crank disk revolves and the lever I oscillates, the block may slide within the slot 8 of the lever, as will be readily appreciated. By providing a lever with a straight slot, the block Il may be used to thus provide an accurate connection, there being no lost motion between the lever and the stud.

By adjusting the stud inwardly or outwardly of the disk, the throw of the lever may be regulated. Pivotally mounted in the same plane as the lever i may be seen the segment gear 28 with its teeth 2i designed to mesh with the driving pinion 22 mounted on the cross shaft 23, which shaft is suitably mounted in the bearings 24 and 25, the latter bearing being hung from the frame, as at 25.

The bearing 24 is bolted in position for quick removal, so that on the initial timing of the wire motion, the gear teeth of the pinion 22 may be dropped within the proper teeth of the segment gear 2 3, as shown in Fig. 3. Also located on this shaft 23 may be seen the cable drum 2?. It is about this drum that the cable 28 is wound, the said cable passing about the opposite sheaves 29 and The one bight 28 of the cable is passed over the drum to the left (Fig. 1) and then secured to a spoke of the drum, whereas the other bight 28 of the cable passes over the drum in the opposite direction and secured, so that when the drum is revolving, one bight pays off as the other bight takes up.

Pressing against the bights 28 and 28" may be seen the several idler rollers 3i, which may be arranged to take up any slack as it appears in the cable 28.

Secured to the cable 28 is the clamp 32, often spoken of as a wire box or hopper, which is provided with the hook arm 33 that engages the various pile wires 34.

The wire guide and pile wires themselves form no part of the present invention, although it mi ht be mentioned, as seen in Fig. 8, that the clamp or hopper is simplified over the usual construction. In Fig. 8 may be seen the yoke 35 of the hopper, which is clamped about the cable 28.

Referring now for the moment to Fig. 2, it will be seen that the crank disk I2 is mounted on the cross shaft IZ which shaft is suitably mounted in bearings and is provided about centrally of its length with an adjustable gear 36, which will be described in detail, that, in turn, meshes with the pinion 37 mounted on the shaft 38, while also mounted on this shaft 38 is the large gear 39, which, in turn, is operated by a pinion 46, which will be driven by a motor (not shown).

It will be remembered that the cable drum 2'! is actuated by the oscillating segment gear 28, which, in turn, is connected with the oscillating lever, which latter is actuated by the relatively large crank disk I2 mounted on the shaft I2 It will also be remembered that the length of the stroke may be varied by setting the stud I3 inwardly or outwardly of the crank disk; and that openings I 0 are provided in the lever I for several adjustments of the link I I, which link is provided With a turnbuckle I I to provide for finer adjustments. Then, to provide a micrometric adjustment for the actuating mechanism, so that any part of a tooth may be allowed for, that is, between the gear 36 and pinion 31, I have provided a plate 36 with its hub 36 which is splined, as at 36, to the timing shaft I2 on which, it will be remembered, is mounted the relatively large crank disk I2. The rear of the plate 36 is provided with the radially extending arms 36 The gear 36 has the lugs 36 arranged to, respectively, straddle the ends of the radial arms 36 as may be clearly seen in Fig. 6. These lugs are threaded to receive the adjusting screws 36 Slots 36 are formed in the gear through which the bolts 36 pass into threaded openings in the plate 35 for securely clamping the gear to the plate after adjustment is effected by the setscrews.

It will be noticed also that the plate 3t has a hub which extends up within the gear for purposes of concentricity, as seen in Fig. 5. After the gear has been adjusted so that the exact desired meshing of the teeth between the gear and its pinion 3'! is attained, that is, down to a micrometric measurement, the bolts 36 passing through the slots 36 in the gear 36 and into threaded openings in the plate 3t will be locked up.

It will be appreciated that it is extremely important that the length of the stroke and the timing be just as accurate as it is possible to be made, due to the synchronizing of the different functions of a carpet weaving loom, and by providing the adjustments first-mentioned and then the micrometric adjustment of this gear on the driving shaft, which, in turn, it will be remembered, revolves the crank disk, operates the lever, and actuates the drum through the segment gear, the operation of the cable, together with its hopper or clamp for actuating the pile wires, can be controlled to the finest degree of accuracy.

In Fig. 3, I have shown the position of the segment gear 2!], lever I, and crank disk I2 for the starting of the loom, and when the parts are in this position, the hopper or clamp 32 on the cable would be to the extreme left of Fig. 1 and the cable and clamp about to start on the outward travel to pull the pile wire through the loops to sever the same.

It is desirable to have the pile wires move out of the shed more slowly than on their inward travel, because the loops are now bound about the pile wires and necessitate greater pressure than when the pile wire is being inserted.

By glancing at Fig. 3, the position of the crank disk I2 and the lever 'I is shown for the proper starting position, and the lever 'I, on the rotation of the crank disk in a clockwise direction, will move over to the position shown in Fig. 4 and the stud I3 will have revolved from the point a around to the point marked b.

A completion of rotation of the crank disk will again cause the lever 'I to move over to the position shown in Fig. 3, while the stud is now traveling from the point b clockwise to the point a. Thus, the return stroke of the lever is much faster than its forward stroke, as is well known and readily understood with a mechanism of this type.

Therefore, there is a relatively slow outward motion of the cable and its clamp to draw out the pile wire and a relatively quick motion for inserting another pile wire into the shed.

From Figs. 3 and 4, it will be seen that by the use of the turnbuckle Il in the link II, an adjustment may be made between the segment gear 20 and the lever 1 and also the link ll may be positioned in the desired opening In in the lug 9 on the lever, which openings ID, by the way, are

located about centrally of the length of the lever, which is where they should be, so that the load to the connecting link is always about centrally of the lever.

As heretofore mentioned, the pinion 23 may be set in the proper tooth of the segment gear and the extra teeth to the right of the pinion, as shown in Fig. 3, are for the proper setting of the pinion with relation to the segment gear 20.

After the parts have all been adjusted for the proper synchronization of the functions outlined, no further adjustments will be necessary for a long continuous operation of the loom.

However, should it be necessary to change the length of the stroke or the timing of the several parts, it is but the matter of a few minutes, as the adjustable parts are all easily accessible.

From the foregoing, it will be seen that I have provided a wire motion for looms that is relatively simple in operation, dispensing with a number of parts heretofore found necessary, and, at the same time, by employing the various parts outlined, the timing and synchronization of the different parts may be adjusted with a fine degree of accuracy. As before stated, the speed of the loom may be stepped up to around fifty picks a minute.

I have also found in actual service that the various parts will withstand the hard usage to which they are put, thus overcoming any frequent shut-downs of the looms for repairs or adjustmerits.

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

In a loom for weaving with pile wires, the combination of a wire box, a cable for imparting motion to the Wire box, a cable drum and pulleys upon which the cable is mounted, a pinion associated with the cable drum, a segmental gear engaged by the pinion, an oscillating lever pivoted in substantially the same horizontal plane as the pivotal point of the segmental gear, said lever having a slot therein, a relatively large crank disk having a radially adjustable stud for timing purposes, a block accurately fitting about said stud and slidably movable within the aforesaid slot in the lever, said oscillating lever having a projecting ear substantially midway its length provided with openings for fastening purposes, an adjustable rod connected to said segmental gear and to an opening in said lever, said rod communicating motion from the said crank disk to the said segmental gear to thereby operate said cable drum, a timing shaft for said crank disk, a main drive shaft for imparting motion to the said timing shaft and crank disk, and a mitre gear connecting the two said shafts, said gear being adjustable in either direction to the width of one tooth to thereby micrometrically effect the final position of the cable drum through the said oscillating lever, adjustable rod, segmental gear, and pinion.

JAMES WHJLIAM FOSTER.

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