US413601A

US413601A - Denberg

Info

Publication number: US413601A
Authority: US
Publication date: 1889-10-22
Anticipated expiration: 1906-10-22

Description

(No Model.) 2 Sheets8heet 1.

- vH. E. IE'RBUDENBBRG.

APPARATUS FOR TREATING HIDES. I No; 413,601, Patented Oct. 22, 1889.

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(No' Model.) 2 Sheets-Sheet 2. H. E. PREUDENBERG.

APPARATUS FOR TREATING RIDES.

No. 413,601. Patented Oct. 22, 1889.

upllll'llllllll ll Wttnesses I Improvements in Apparatus for the Treat-- UNITE STATES j PATENT ()FFIC-E.

HERMANN ERNST Fl tE IIDENBERG, OF VVEINHEIM, BADEN, GERMANY.

APPARATUS FOR TREATING H|DES.

SPECIFICATION forming part of Letters Patent No. 413,601, dated October 22, 1889.

Application filed February 16, 1889. Serial No. 300,149. (No model.)

To all whom it may concern:

Be it known that I, HERMANN ERNST FREU- DENBERG, a subject of the Grand Duke of Baden, residing atVVeinheim, German Empire, have invented certain new and useful ment of Untanned Hides and Skins, of which the following is a specification.-

In the process of tanning hides and skins the first operation is to soak the dried or salted skins in water in order to restore their natural pliability. It is common to aid the softening effect of the water by means of various mechanical contrivancessuch as tumblers, stocks, or mangle-rollers-all of which apparatus are designed to soften or break the skins by subjecting them to violent action. The next operation is the fleshing of the skins-that is, the removal from the flesh side of the skin of all particles of flesh, fat, veins, and cellularmatter. This operation was most commonly carried out byhand on the tanners beam with the beam-knife.

Various mechanical devices have been-proposed for fleshing, but have been more or less objectionable because they have used rotating spiral knives which cause many cuts in the hide and other defects so long as they are kept sharp, and on the other hand do not perform their work when after a short time they become blunt.

It is the main object of my present invention to do at one operation both the soften ing and fleshing which have heretofore been two successive operations, and this object I accomplish by theuse of a rotary grindingstone with diverging grooves on its periphery, against which the flesh sides of the skins are pressed in the presence of a continuous Jet of water. For the purpose of increasing the softening and fleshing action of the grinding-stone, I form its periphery or face with deep grooves which are made to diverge from A the center in order to stretch the skins and to stretch out all folds or wrinkles. I have found in practice that by this use of a grind ing-stone in connection with the water-jet,

and particularly when the grinding-surface is grooved, the hides are fleshed more neatly and with less damage than in any other way, and the skins are also softened to a degree 3 hitherto unknown.

, In the accompanying drawings, Figure I is a side elevation partly in section, and Fig. II a front elevation, of a fleshing-machine constructed according to my invention.

The grinding-stone A, with the shaft 0, rests in the frame 13 and is driven by a pulley D, a loose pulley D being also provided on the shaft 0. As shown in the drawings, the grinding-stone has grooves R diverging from the middle of its periphery, which grooves flatten and stretch the skins. A water-pipe leading from a tank w is employed, whereby a stream of water is projected onto the place where the skin comes into contact with the stone. To the'fixed table E, facing the stone, is attached the upright J, having a movable cushion F, and connected to the table by the link 0. By means of this upright, which is operated by a pedal-lever H, the required parts of the skin can be pressed against the stone with the desired degree of No. 107,562, of September 20, 1870; but that machine has for its sole purpose the breaking or softening of skins by means of a mangleroller and does no fleshing at all. According to my invention the skin is not only softened, but the flesh and cellular matter on the flesh side of the skin are ground off, by means of the rotating grinding-surface.

I am aware, also, that in the treatment of leather it is customary to use polishing-wheels, but that is for the treatment of tanned leather and in a dry or nearly dry state, and must necessarily be without the use of water.

I am also aware that it has been proposed to treat untanned hides to the action of. a rotary wheelhaving its periphery coated with sand or emery, but without the use of water.

The natural grinding-stone of my machine will stand the use of water where a wheel lined with emery-cloth or coated with sand or emery would not. In my machine, moreover, the natural sandstone or other grindingstone has the diverging grooves, so that I flesh andbreak the operation.

hide at one and the same I claim as my invention In testimony whereof I afiix my signature in m The herein-described machine for fieshing presence of two Witnesses.

and softening nntann'ed skins, and comprising a, rotary grinding-stone with grooves on HERMANN ERNST FREUDENBERG.

5 its periphery diverging from the center toward the edges thereof, a supporting-surface Witnesses:

forthe skins, and a water-supply pipe to di- FRIED. BUSSEMER,

rect a current of water onto the skins under HEINRICH J OCHIM.

treatment, all substantially as described.