US302454A - Blias s - Google Patents

Description

E; s. WARD.-

TANNING WHEEL.

(N9 Model.)

No. 302,454. Patented July 22, 1884.

l o o o o o o o jhventore 22m 5; ward UNITED STATES ATENT rrrcn.

ELIAS S. \VARD, OF N EVAEK, NEW JERSEY.

TANNING-WHEEL.

QPFCIFECATION forming part of Letters Patent No. 302,454, dated July 22, 1884:.

Application filed February 14, 1884. (No model.)

To all whom, it may concern.-

Be it known that I, ELIAS S. TARD, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Tanning-Wheels and I do here- ,bydeclare the following to be a' full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to reduce-the 1 labor employed and time occupied in handling grains or splits during the process of tanning, to more effectually tan the same,improving the quality thereof, as described hereinafter.

The invention consists in the arrangement, construction, andoperation of the apparatus employed in tanning the hides, substantially as illustrated in the drawings and described and claimed hereinafter.

Referring to the accompanying drawings, in which similar letters of reference indicate like parts in each of the figures, Figure 1 is a side elevation of a vat and drum partly broken away; and Fig. 2 is a transverse section of the same, taken centrally through the drum and vat as shown in Fig. 1.

The various methods and devices employed in tanning hides have been defective in that they caused great labor in handling the same,

3 5 and also, by allowing the hides to be entirely or nearly submerged in the liquor for a long time, were liable to impair the quality thereof, thereby necessitating the use of weak liquor, and taking considerable time to thoroughly 0 subject the hides to the action of the tannin.

In treating the hides, grains, or splits it is very important that they should not be subjected to violent action, but slowly and thoroughly acted upon by the liquor, which, in

4 5 my method, can be much stronger than is usually employed without injuring the stock. The tank or vatA, as shown in the drawings, is similar to the ordinary rectangular vat in common use. Within the tank is arranged the drum or handler B, revolving on journals 0 in bearings (1 upon the sides of the tank, Fig. 2. Upon one of the journals, as c, is secured the cog-wheel c which is driven by the worm f, actuated by the shaft 9 and pulley h. The handler B is composed of the sides 13, placed at a suitable distance apart, the peripheries of which are connected by the perforated strips I), placed close together or slightly separated, leaving an opening between,as desirable. The interior of the drum is divided into several sectoral compartments or pockets 0 by the partitions I, having openings or perforationsg therethrough, access to each compartment being hadthrough the circumference by remov ing the door 1), formed by uniting several strips Hy'suitable braces, as shown in Fig. 1, said doors being held in position by the adjustable pieces I)". a

J is a steam-pipe extending down into the liquor in the tank, through which the steam 7o 7 for heating the tanning-liquid is conducted. The degree of heat best adapted to secure the most perfect results in tanning is about 90 Fahrenheit. Ordinarily the liquor is heated to about 130 Fahrenheit, and allowed to cool down to about 60 Fahrenheit. If the hides were allowed to remain in the vat while the liquor is being heated to the extreme temperature, they would become blistered and burned. Consequently it is necessary to remove the hides from the vat and replace them when the liquor is sufliciently cooled. This, as is evi-- dent, causes a great deal of trouble and labor, and,further, greatly impairs the quality of the stock. By means of my revolving drum the hides are kept continually moving in and through the liquor; hence the steam can be admitted, and the temperature of the liquor maintained at the degree of heat desired. I11 my process the hides are partially tanned or struck, 0 then split into grains and splits, and subjected to the tanning process in my improved handler or drum. The grains or splits, either together or separately, are placed within the com partments or pockets, and by the rotation of the drum are dipped in the liquor in the tank, the tanning-liquid permeating the stock, running through the perforations in the periphery and partitions, and thoroughly subjecting every portion of the stock to the action of the tannin. 13y alternately dipping or immersing the stock in the liquor and lifting it out of the same as the drum revolves, the grains and splits are in turn soaked and'drained, and as the stock is-not permitted to remain sta tionary in the liquor the strength thereof can be greatly increased; consequently reducing the time necessary to complete the tanning process. The methods and processes herein described, however, are reserved for a subsequent application, and are not intended to be covered by this application. As the drum revolves in one direction, the stoekwithin the pockets is liable to become twisted or rolled tightly together, thereby preventing the thorough action of the tannin. To obviate this difficulty I reverse the motion of the drum at intervals, thereby lintwisting the stock, the time varying according to the kind of stock .in the drum.

To accomplish the reversing of the drum I may employ various devices, either bychanging the worm for one having the thread running in an opposite direction, or by crossing the belt, as indicated by the dotted lines at theleft of Fig. 1, the latter method being pref-,

Witn esses:

CHARLES H. DELL, F. F. CAMPBELL.

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