Laminated lag for shoddy picker cylinders

Abstract

Claims

March 12, 1 BQCK ET AL LAMINATED LAG FOR SHODDY PICKER CYLINDERS Filed Feb. 9, 1939 INVENTORS. [AM/FENCE BUCK. Kass/er C P650. ATTORNEY. Patented Mar. 12, 1940 UNITED STATES LAMINATED LAG FOR SHODDY PICKER CYLINDERS Lawrence Bock, Newark, N. 3., and Robert C. Reed, Queens Village, N. Y., assignors to William Crabb & Company, Newark, N. J., a corporation Application February 9, 1939, Serial No. 255,484 4 Claims. This invention relates to machines .for preparing fibrous material into condition for spinning, and with special reference to devices for picking and shredding rags, derived from old garments and the like, whereby the fibers therein may be salvaged and rendered useful in the production of so called shoddy yarns used in re-vv'eaving textile fabrics. The fibers so obtained, in the form of a sliver, may have their original length, strength, liability and other valuable attributes, being neither torn or cut during their reclamation, and when properly treated, their conservation is a matter of very considerable consequence. To disintegrate old woven material requires powerful machinery, usually in the form of a revoluble cylinder, having strong teeth set in suitably spaced relation in its periphery, adapted to shred any fibrous textile fabrics presented, in combination with comb-like carding devices to receive and remove the picked and reclaimed fibers in the form known as a sliver preparatory to spinning. It is an object of the present invention to prowide a new and improved covering for such cylinders, composed of a plurality of lags, each provided with rigid teeth or pins set securely therein, the lags being collectively secured on the periphcry of the cylinders in juxtaposed relation. A further feature is in the provision of a novel and practical method of making a laminated metal lag, in which the teeth or pins are assembled in holes which have been previously punched in the individual plates, all of which have been assembled and secured together as a unit by riveting, welding or bolting. Another purpose is to produce a lag having intersecting lateral edges, slidably engaging onewith another, permitting ready removal and substitution. Finally, it is an aim to provide an inexpensive sectional cylinder facing, of exceptional merit, easy to apply or remove. These valuable objects are accomplished by the novel construction, combination and arrangement of simple parts hereinafter described and illustrated in the accompanying drawing, constituting a material component of this disclosure, and in which: Figure 1 is a perspective view of a conventional type of picker cylinder provided with a facing of lags made in accordance with the invention. Figure 2 is an enlarged fragmentary transverse sectional view of the lags as applied. Figure 3 is a perspective view of a portion of a lag in detail. The simplicity and practicability of the invention is clearly indicated in the drawing, in which the numeral i9 designates in general spoked support wheels having a hub i l adapted to be firmly I fastened upon a driving shaft, one of the several elements of a picker mechanism. The circular ring H! of these wheels is fianged and drilled as at M5, to receive securing means; several of these wheels constitute, in effect, supports for a sectional cylindrical facing, composed of series of wooden slats 55 held by bolts it passing through the holes M in the flanged rims. An outer metallic covering consists of a plurality of lags 18, each consisting of a series of laminations preferably sheet steel |9202l 22-23 of uniform thickness and width, curved to COIlfOlll'i'tO the radius of the cylinder, and pierced, as by a gang punch and die, to present a plurality of perforations 24, alike in size and arranged in uniformly spaced rows distanced apart as may be preferred. 1 It is to be noted that the perforations 24 in each alternate plate are staggered laterally relative to the perforations in the next adjacent plate, and firmly fixed in the perforations are rigid pins 25, their outer extending portions pref erably tapered, all being'of equal length and suited to rend, tear and pick the fibers of material presented to them, these fibers being recovered from the pins or teeth by mechanical devices wel known in the art and not herein shown. Due to the oifset punching of the plates, when they are assembled and held in adjusted rela- While various forms of fastening means may be used to retain the lags on the peripheries of the supports, U-sh-aped bolts are preferred, their connecting elements 2'! disposed in such manner as to extend over the adjacent edge portions of two of the lags, while their spaced bodies reach through the wooden foundation clothing 15 and the flanged rims l2 of the wheels to pass through washer plates 28 against which they are drawn by nuts 29. From the foregoing it will be apparent that any lag section can be removed by releasing the staple bolts at its edges and by applying pressure to the end of the lag, it is caused to slide linearly outward; replacement is effected in a similar manner. The present invention is at least as strong and effective as the usual thick lag, is more readily amenable to substitution, and the very considerable cost of drilling holes for the pins is enormously decreased by the simple punching process herein indicated, in addition to the precision obtained. Although the foregoing is generally descriptive of the best known embodiment of the invention, it will be understood that minor changes may be made within the scope of the appended claims, and that parts of the invention may be used without others. Having thus described the invention, what is claimed as new and sought to secure by Letters Patent, is: 1. A picker cylinder comprising circular supports, a plurality of lags each composed of a series of laminated steel plates fixed on said supports in laterally offset relation, said plates having registering punched perforations, and picket pins rigid in the plate perforations. 2. A picker cylinder comprising circular supports, a plurality of lags each composed of a series of laminated sheet steel plates of concavoconvex cross section arranged in uniform ofiset relation and interengageable with the plates of the adjacent lags at their edges, punched perforations in each plate, picker pins set in the perforations to extend outwardly therebeyond, and means to secure said lags to said supports. 3. A picker comprising a cylinder made of a wooden foundation clothing, a plurality of laminated sheet steel lags fixed thereon, said laminations uniform in width and disposed to present their lateral edges in equally offset relation, interengageable within the space between the corresponding laminations of the next adjacent lags, all of said laminations being plurally pierced to produce uniform perforations, picker teeth rigidly secured in the perforations and extending outwardly from the axis of said cylinder, and staple bolts connecting said lags to the cylinder. 4. A picker comprising a cylinder having a Wooden foundation covering, a plurality of laminated sheet metal lags fixed thereon, each successive lamination having its lateral edges disposed in offset relation with respect to the edges of the adjacent lamination, said laminations being uniform in width and disposed to present their lateral edges in equally offset relation, said laminations uniform in thickness and curvature and interengageable within the space between the corresponding laminations of the next adjacent lags, all of said laminations being pierced to produce a plurality of perforations, picker teeth rigidly secured in the perforations and extendinf outwardly from the axis of said cylinder, and means to aflix said lags to the cylinder. LAWRENCE BOCK. ROBERT C. REED.

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