US587717A

US587717A - Machine for treating hides

Info

Publication number: US587717A
Authority: US
Publication date: 1897-08-10
Anticipated expiration: 1914-08-10

Description

(No Model.) 3 Sheets- Sheet 1.

W. EVANS. MACHINE FOR TREATING HIDES, SKINS, OE LEATHER.

No. 587,717, Patented Aug. 10,1897.

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(No Model.) 3 Sheets-Sheet 2.

- W. EVANS.

MACHINE POR TREATING HIDES, SKINS, 0R LEATHER.

Patented Aug. 10,1897.

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(NO Model.) '3 Sheets-Sheet 3.'

W. EVANS. MACHINE FOR TRBATING HIDES, SKINS, OR'LEATHER.

Patented Aug. 10,1897.

UNITED STATES PATENT OFFICE.

IVILLIAM EVANS, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR TREATING HIDES, SKINS, OR LEATHER.

SPECIFICATION forming part of Letters Patent No. 587,717, dated August 10, 1897'. Application led November 20, 1896. Serial No. 612,912. (No model.)

To @ZZ whom t may concern.'

Be it known that I, WILLIAM EVANS, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Treating Hides7 of which the following is a specification.

My invention has relation to a machine for leshing, scudding, cleansing, slicking, skiving, unhairing, or laying out hides, skins, or leather and for analogous purposes; and it relates particularly to the construction and arrangement of the drum upon which the Inaterial to be treated is mounted, as well as to means for grinding or sharpening the blades of the finishing-cylinder thereof.

The principalobjects of my invention are, rst, to provide in a machine of the character described a drum upon which the hide or skin is supported, said drum consisting of a core or barrel upon which is secured a series of elastic or yielding bands or strips of niaterial, the middle one of said bands or strips being less iexible, elastic, or yielding' than the other bands or strips, whereby the ridge or backbone of a skin may be more readily shaved and the skin also stretched or spread out more completely and uniformly, and, second, to provide in a machine of the character described a linishing roll or cylinder adapted to be brought down upon the hide or skin upon the'drum by a treadlc or other suitable mechanism, the cylinder being normally held above the drum out of operative position with respect thereto by means of supports suspended from a system of counterpoising-levers, and a grinding-block carried by said supports and adapted to tra-verse the periphery of the cylinder to sharpen the lades of the same.

My invention, stated in general terms, consists of a' machine for treating hides, skins, or leather constructed and arranged in substantially the manner hereinafter described and claimed.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the acmain features of my invention. Fig. 2 is a top or plan view thereof. Fig. 3 is a crosssectional view of the machine. Fig. 4 is a side elevation, partly sectioned, illustrating in detail the swinging support for the working roll and for the grinding-block. Fig. 5 is a vertical section illustrating in detail the construction and arrangement of the grinding mechanism. Fig. 6 is a longitudinal sectional vieW of the drum, and Figs. 7 and S are respectively top yand end elevational views of a hide or skin adapted to be worked in a machine of my invention.

Referring to the drawings, a represents the standards of the machine, preferably mounted upon a base a'. In the standards a is supported a shaft b, having mounted on the same a drum B, upon which the hide or skin B is adapted to be supported when worked by the machine. The drum B consists of a shell or core formed or built up preferably in live sections, as illustrated in Fig. 6 of the drawings. The central or middle section ZI' is covered by a tightly fitting sleeve b2 of rubber, which is vulcanized or treated so that its surface is comparatively iirm or hard. The other sections b3 are covered by sleeves b4 of rubber, the surface of which is comparatively soft and Inore yielding than the central sleeve b2.

The sleeves h2 and b4 are united to the sections preferably in the following Inanner: Upon the outer face of each section of the drum B is provided a series of double-tapered longitudinal grooves or recesses b5, in order that the yielding material introduced into the same may become fixed against possible slipping or displacement thereof. On the sections thus grooved is provided first a layer of elastic material of a dough-like consistency or a plastic mass, which is pressed into the grooves or recesses b5. This elastic material, which by preference is rubber, is baked'until hard, and an outer layer of vulcanized rubber is then applied thereon by means of cement or otherwise. rlhe texture of the outer layer varies, so that preferably the central sleeve b2 is harder and less elast-ic than the other sleeves b4 thereof. The drum B thus formed is peculiarly adapted to support a hide or skin B', known as a cow or bull hide and having the wrinkled central portion B2 terminating in the ridge or backbone B3, which portion B2 and ridge B3A are adapted to lie upon the central sleeve b2. By reason of its harder and less elastic texture this sleeve b2 permits of the hide being trimmed or shaved down evenly and smoothly across its entire Width and the more elastic sections b4 permit of the stretching or spreading out laterally of the hide or skin in passage through the machine and during treatment of the same therein. Directly above -the drum Bis suspended a cutter, ileshing, or working cylinder D, the shaft d of which is journaled in vertically-movable boxes CZ', supported by means of the frames or brackets e, arranged at either end of the shaft d, as illustrated in Figs. 2 and 4 of the drawings. The upper end of eachbracket c is pivoted, as at c', to a counterweighted le ver e3, which is pivotally supported, as at e4, in the frame or standardsd of the machine.

The lower end of each bracket is secured to one end of a rod f, the other end of which is pivoted to a treadle-arm f. The treadlearms f' are each by preference pivoted at one end in an extension or bracket f2 of the standards d near the base d', and the free ends of the arms f are connected by a' foot-piece f3, upon which the operator presses to depress, through the treadlearmsf,rodsf, and frames e, the shaft d and cylinder D in the direction of or toward the drum B.

Upon the brackets f2 is pivoted a lever f, one end of each of which bears against the pivotal connection of the rods f with the treadle-arms f. The other'end of each lever fL is counterweighted at f5. By thus counterweighting the levers e3 and f4 the brackets e, and consequently the cylinder D, are normally elevated and balanced in such manner as that the cylinder D can be depressed by the treadle-arms f without the usual slip or backlash.

The cylinder D is driven directly from a main shaft (not shown) inthe following preferred manner: To one end of the shaft CZ of the said cylinder is keyed or otherwise secured a pulley 7L. One of the boxes d is carried at both sides of the machine by arms h', pivoted, as at 71,2, to a stud h3, upon which rotates an idle-pulleyh The free ends of the arms 71. carry a stud h5, upon which a pulley h6 revolves. A belt k7 is passed around a driving-pulley (not shown) and then under the pulley h, over the pulley h4, and under the pulley 7L, substantially as illustrated in Figs. l and 3.

It will be apparent from the above descripthat therefore a normal tension of the belt k7 is secured, irrespective of the movement of .the shaft CZ, pulley 71, and cylinder D.

The brackets e are connected together by the cross-rods m, upon which a carriage 'mf is mounted and adapted to be slid by means of the handles m2 to thereby traverse the length ofthe cylinder D above the periphery thereof, as illustrated in Figs. 3 and 5. On the carriage mf is arranged a vertically-movable slide m3, carrying a block m4 of emery or other suitable grinding material. The slide m3 and block m4 are fed toward or away from the blades of the cylinder D by means of the threaded bolt m5, operated by the crank or handle m, supported by an extension or bracket m7 on the carriage m', as shown in Fig. 5. By thus mounting the carriage m and the grinding-block m4 upon the crossrods m the grinding mechanism is always in fixed relationship with respect to the cylin der D, and any movement up or' down of said cylinder is imparted by the brackets e and cross-rods m to t-he carriage m and the block m4. Hence no matter what the position of the cylinder be with respect to the drum B its blades may be sharpened and trued by the grinding mechanism hereinbefore explained.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a machine of the character described, a drum upon which the hide, skin or leather is adapted to be supported and consisting of IOO a cylindrical core or barrel provided with grooves or recesses, a covering of elastic or yielding material of equal thickness throughout applied thereto but the central portion of said applied covering being of a less elastic nature than the end portions thereof, substantially as and for the purposes described.

2. In a machine of the character described, a sectional 'drum provided with double tapered grooves or recesses, a yielding material or substance applied thereto, and one of said sections being of greaterrmness or ri gidity than the other sections of said drum, substantially as and for the purposes described.

3. In a machine/of the character described, a working roll or cylinder, brackets supporting said cylinder, counterpoising-levers from which said brackets are suspended, crossrods connecting said brackets and a grinding mechanism supported on and adapted to slide over said rods and maintained in fixed l relationship with respect to said cylinder, substantially as and for the purposes described.

4. In a machine of the character described,

two counterweig'hted arms, a bracket suspended from each arm, a cylinder having its bearings in said brackets, cross-rods connecting said brackets, a carriage supported on and adapted to slide over said cross-rods, a slide vertically movable with respect to the carriage, a grinding-block carried by said slide and means for moving said slide and block in the carriage toward'or away from the periphery of said cylinder, substantially Io as and for the purposes described.

In testimony whereof I have hereunto set my signature in the presence of two subscribing Witnesses.

WILLIAM EVANS. lVitnesses:

J. WALTER DoUcLAss, THOMAS M. SMITH.