US2427827A - Adjustable yarn guide - Google Patents

Description

Sept. 23, 1947. E. K. WHITENER ADJUSTABLE, YARN GUIDE Filed Jan. 15, 1945 INVENTOR: l'meslln. Wzz'iezzer, W

ATTORNEYS.

Patented Sept. 23, 1947 ADJUSTABLE YARN GUIDE Ernest K. Whitener, Gastonia, N. 0., assignor to Cooker Machine and Foundry Company, Gastonia, N. C., a corporation of North Carolina Application January 15, 1945, Serial No. 572,765

8 Claims.

This invention relates to adjustable yarn guides useful in connection with textile machinery such as warpers, beaming units and slashers. More specifically it is concerned with yarn guides in which links of lazy tongs carry means which afford spaced guide intervals for passage of the yarns, adjustment of the combs being effected by expansion or contraction of the lazy tongs. With mechanism heretofore devised for effecting adjustment in such structures, difiiculty has been experienced due to looseness of the parts or to wear in the pivots, in securing uniform movement as between the crossed link members of the lazy tongs throughout the length of the devices so that the spacing of the yarns was irregular which consequently precluded even winding of the yarns onto the beams.

My invention has for its chief aim to overcome the above difiiculty, that is to say, to insure the impartation of uniform movement to all the component bar members of the lazy tongs as the comb is being expanded or contracted to adjust the yarn spacing. How the foregoing desideratum and other advantages can be readily realized in practice will appear from the following detailed description of the attached drawings, wherein,

Fig. 1 is a view showing my improved expansible guide comb in top plan.

Fig. 2 shows the structure in side elevation.

Fig. 3 shows a fragmentary portion of the device in longitudinal section;

Fig. 4 is a cross section of the device taken as indicated by the angled arrows IVIV in Fig. 1; and

Fig. 5 is a fragmentary detail section taken as indicated by the angled arrows VV in Fig. 3.

As herein exemplified, my improved expansion comb comprises an elongated longitudinally slotted support Ill whereon is mounted a lazy tongs comprehensively designated II, the latter being composed of crossed pairs of links l2, 13, which pairs are pivotally connected to each other at their outer ends as at l5 and I6 respectively. Adjacent links l2 and I3 of the two sets are moreover pivoted to each other centrally as at I1. Sustained in clevised bosses 18 on the links l3 are bars [9, each provided with a series of evenly spaced studs 20 in the intervals between adjacent pairs of which the individual yarns to be guided are passed as indicated by the broken yarn Y in Fig. 1.

Confined, to endwise movement in the longitudinal slot of the support I 0 are slide blocks 2| respectively with central upstanding projections which serve as the .pivots ll for the crossed links l2, I3 of the-lazy-tongs I I. As shown in Figs. 1-4, sleeves 22 with oppositely threaded ends engage correspondingly tapped holes 23 in adjacent slide blocks 2|, said sleeves being formed at their centers with gear collars 25 whereof the teeth mesh with those of a .common longitudinallyextending actuating pinion rod 26. The trunnion ends 2'! and 28 (Figs. 1 and 2) of the pinion rod 26 are rotatably engaged in bearings 29 and 30 at the opposite ends of the support I0, and to their protruding portions are secured operating hand cranks 3i and 32. It is to be noted from Fig. 4 that the pinion rod 26 extends freely through clearance openings 33 in the slide blocks 2| immediately below the tapped holes 23 in said blocks. The contiguous ends of adjacent sleeves 22 of the series are opposedly threaded internally and engaged by the corresponding oppositely threaded ends of screw shank elements 35, which, midway of their lengths are provided with squared collars 36 that snugly lit the slot of the support [0. As best shown in Figs. 3 and 5 the block 36 of the element 35 at the center of the series is secured against movement by a transverse pin 31 while the others are left free to slide in the slot of the support [0 when the comb is adjusted in the manner about to be explained.

By virtue of the described construction, it will be seen that rotation of the actuating pinion shaft 26 in one direction will be attended by expansion, or lengthening, of the lazy tongs II, and that rotation in the other direction will result in contraction or shortening of said tongs with corresponding variation of the spacing of the yarns y as they pass through the comb. Due to the direct individual control of the center pivots ll of the lazy tongs [I through the medium of the interthreaded sleeve and shank elements 22 and 35, it necessarily follows that the expansion or contraction of the device will be uniform throughout its length with assurance against the possibility of irregularities in the spacing of the yarns which are being guided through the comb, and that by reason of the pinning of the shank element 35 at the center of the series the expansion or contraction will take place in opposite directions from the center of the comb.

Having thus described my invention, I claim:

1. An adjustable yarn guide for textile machinery including a lazy tongs with means on component links thereof providing spaced guide intervals for passage of individual yarns; a longitudinally movable slide for the central pivot of each crossed pair of links of the lazy tongs; separate screw elements each with a right and a lefthand thread individually common to and connecting adjacent pairs of the slides; and operating means for concurrently rotating all the screw elements in one direction or the other to expand or contract the comb.

2. The invention according to claim 1, wherein the operating means comprises a longitudinally extending actuating shaft and gear connections between said shaft and the several screw elements.

3. The invention according to claim 1 further including a longitudinally slotted support to which the slides are confined.

4. An adjustable yarn guide for textile machinery including a lazy tongs with means on component links thereof providing spaced guide intervals for passage of individual yarns; longitudinally movable slides to which crossed pairs of the lazy tongs links are centrally pivoted; tubular screw elements with external right and lefthand threads at opposite ends engaging correspondingly tapped holes in adjacent pairs of the slides; non-rotative screw shank elements with oppositely threaded ends engaging corresponding internal threads in the contiguous ends of adjacent pairs of the tubular screw elements; and operating means for concurrently rotating all the said tubular elements in one direction or the other to expand or contract the comb.

5. The invention according to claim 4, wherein the operating means comprises a longitudinally extending actuating shaft and gear connections between said shaft and the several tubular screw elements.

6. The invention according to claim 4, wherein the operating means comprises a longitudinally extending actuating shaft with gear teeth extending lengthwise thereof, and pinion collars centrally of the respective tubular screw elements in mesh with the teeth of said shaft.

'7. The invention according to claim 4, further including a longitudinally slotted support to which the slides are confined, and wherein the screw shank elements are provided medially with squared portions which fit the slot of said support.

8. The invention according to claim 4, further including a longitudinally slotted support to which the slides are confined; wherein the screw shank elements are provided medially with squared portions which fit the slot of the support; and wherein the central screw shank element of the series is secured against endwise movement in the slot of said support.

ERNEST K. WHITENER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name' Date 2,048,974 Smith July 28, 1936 FOREIGN PATENTS Number Country Date 29,202 Great Britain 1904 798,650 France Mar. 10, 1936

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