US924900A - Spring-roll for leather-splitting machines. - Google Patents

Description

J. H. GAY & W. n. QUIGLEY. SPRING ROLL FOR LEATHER, SPLITTING MACHINES.

APPLIGATION FILED DEO.11, 1907.

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Patented June 15, 1909;

WITNESSES:

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J. GAY & W. D. QUIGLEY. SPRING ROLL ron LEATHER SPLITTING momma.

APPLICATION FILED DEG.11,1907.

Patented June 15,1909.

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WITNESSES:

UNITED STATES PATENT OFFICE.

JOSEPH H. GAY AND WILLIAM D. QUIGLEY, OF NEWARK, NEW JERSEY.

SPRING-ROLL FOR LEATHER-SPLITTING MACHINES.

Specification of Letters Patent.

Application filed December 11, 1907.

Patented June 15, 1909.

Serial No. 406,052.

To all whom it may concern:

Be it known that we, JOSEPH H. GAY and WILLIAM D. QUIGLEY, citizens of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Spring-Rolls for Leather-Splitting Machines, of which the following is a specification.

The invention relates to spring rolls for leather splitting machines. The roll is formed of a plurality of individual separable cylinders, disposed end to end in juxtaposition upon the driving shaft.

The object of the invention is to enable the roll to adjust itself to varying thicknesses of hide or to obstacles passing between it and the gage roll. To this end, the driving shaft is made rectangular in cross section and is received in rectangular axial openings in said cylinders. These cylinder openings have one dimension, at right angles to the shaft axis, longer than the corresponding dimension of the shaft, and the cylinders may be so disposed successively on the shaft that the longer sides of their axial openings alternate at right angles, or so that the coinciding axial openings of a group of said cylinders may stand at right angles to the coinciding openings in another group of cylinders, or so that the coinciding openings in an interme diate group of cylinders may stand at right angles to the openings in two cylinders disposed respectively on each side of said group, and in various other ways for accomplishing the before-mentioned object.

In the accompanying drawingsFigure 1 is a longitudinal section of our spring roll on the line 1 y. of Fig. 2. Fig. 2 is an end view of one of the roll cylinders showing the driving shaft in cross section. Fig. 3 is a view similar to Fig. 2, but showing the cylinder and shaft rotated to a position 45 degrees from that of Fig. 2. Fig. 4 shows a modification in which a plurality of cylinders have their central openings at right angles to openings of an adjacent plurality of cylinders. Fig. 5 shows two groups of juxtaposed cylinders having their openings coinciding and at right angles to the openings in three other cylinders disposed one between said groups, and the others at the ends, and illustrates the action of said cylinders and shaft. Fig. 6 shows the ordinary disposition of gage roll and spring roll with respect to the hide in a leather splitting machine, and the positions taken by a cylinder having its opening at right angles to the oaening in the adjacent cylinder when said 'rst named cylinder is vertically depressed by the hide passing over it.

Similar letters of reference indicate like parts.

The driving shaft Ais rectangular and preferably square in cross section. Upon said shaft are placed the metal cylinders or disks B, C, D, E, F. Said cylinders are preferably formed integrally of metal and are of equal diameter, so that when placed together on the shaft A, and secured in place thereon in any suitable Way, as by a collar and clamping screw K, they unitedly form a smooth surfaced roll. As many cylinders may be as senibled on the shaft as is required to make a roll of desired length.

In each cylinder is a rectangular axial opening G, in which the shaft A is received and which in cross-sectional area has one dianension longer than the corresponding dimension of the shaft. Thus the dimension a. b. of the cylinder opening is longer than the corresponding dimension 0. d. of the shaft. The cross-section of the shaft may be square, while that of the cylinder opening may be in the form of a parallelogram. It follows, therefore, that each cylinder has transverse play upon the shaft.

In the construction shown in Fig. 1 the cylinders are placed upon the shaft so that the longer sides of their axial openings alternate at right angles. Thus the openings G of the cylinders B, F, Fig. 1, stand at right angles to the openings G of the next alternating cylinders O, E; or a plurality or group of juxtaposed cylinders as B, B, Fig. 4, may alternate with a plurality or group of cylinders C, C, the cylinders B, B, having the longer sides of their axial openings coinciding and disposed at right angles to the longer sides of the openings of the cylinders C, C or a plurality or group of juxtaposed cylinders as O, C, &c., Fig. 5, may alternate with a single cylinder, as B; the cylinders C, C, &c., having the longer sides of their axial openings coinciding and disposed at right angles to the longer sides of the openings of the cylinders B.

Referring to Fig. 6, I is the gage roll, J the knife, K the delivery table, and L the rubber or elastic roll as ordinarily present in leather splitting machines. A thick portion of the hide Hsay at the edge of the hideis shown passing over .the cylinder B represented in full lines the opening G in that cylinder is in vertical position, hence the cylinder B being pressed downward by the hide slides, transversely on the shaft A, and embeds itself in the rubber roll L and generally if any given cylinder standswith the long dimension of its opening G vertical, it is free to yield to. any vertical pressure exerted in the direction of the arrow, Fig. 2, the cylinder then sliding transverselytothe shaft. If the cylinder be turned 45 degrees to the position shown in Fig. 3 again it will yield in a downward .direction to pressure similarly directed. And, generally again, each cylinder will slide transversely on the shaft in every position in which itsaxial opening G may be placed by the rotation of said shaft, except when the long dimension a, Z); of said axial opening is exactly at right angles to thedirection of the. applied force. Then, the shaft A may bend at the point where the pressure is applied; Thus in Fig. 1 if pressure is applied to cylinder C in the direction of the arrow e then the cylinder C will bend the shaft downward; so that while the cylinder will yield and indent the elastic roll as before, it will not do so because it slides on the shaft, but because itbends the shaft. It willbe noted that the period when the long dimension of the opening G on any given cylinder stands directly at right angles to the impressed force, is: only momentary.

Where successive cylindershave the long sides of their openings G disposed alternately at right angles as in Fig. 1, it-is de s'irable to make the shaft A as flexible as possible, so that the cylinderrC, for example, in descendingcan bend the shaft at the cylinder E despite the short distance between cylinder C and cylinder E. But a preferable arrangement which does not require so flexible a shaft is that shown in Fig. 5. Here the cylinders B, D, F, have the long sides of their openings G at right angles to the direction of pressure exerted by the hide H. Between the cylinders B, D, is a group of seven 0 linders, C, C, &c., and between the cylin ersD, E, is another group of seven cylinders, E, E, &c. The groups C, C, &c., and E, E, &c., all have the long sides of their openings G vertical orin the direction of pressure excited by the hide H. The thickest part of the hide obviously acts directly on the cylinder D, which cylinder is thus forced down the shaft A as shown. This it'can do the-more easily because of the long distance between the cylinders B,;,F. The adjacent cylinders-in groups C C and E, E slide transverselyon shaft A. The point .to be observed is; that the greater the number of cylinders in each.intermfediate group C, C or E, E, the more readily will the shaft bend when an obstacle or increased thickness of hide comes-over any single cylinder,uas D, at the moment whenthat single cylinder D cannot. slide transversely on the shaft, and hence the less the tendencyfor the shaft to carry down with it the cylinders B and We claim 1 In a spring roll,;a driving shaft a rality of individual. separable cylinders of equal diameter thereon the circumferential peripheries of said cylindersunitedly-form ing the roll surface, the said shaft being rec tangular in .cross section, and; received in rectangular axial openingsin sajid cylinders, and the said cylinder.openings having;one dimension at right angles to the shaft axis longer than the correspondingdimension of the shaft; the said. cylinders being disposed with the longer sidesofthe axial openings,

of certain selected. cylinders at right angles to thelonger sides-of the axial openings of the remaining cylinders. a

In testimony-whereof We haveaffixed our signatures in presence of two witnesses.

JosEP GAY. V 7 WILLIAM D. QUIGLEY.

Witnesses:

GERTRUDE T. PORTER, PARK BENJAMIN, Jr.

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