US66125A - bijkcham - Google Patents

Description

P. J. BURGHAM. V I

MACHINE FOR SOFTENING 0R DRESSING LEATHER O-R SKINS.

No. 66,125. Patented June 25,. I867,

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F. J. B URCHAM, OF R-ACIN'E, WISCONSlN.

Letters Patent No. 66,125, dated June 25, 1867.

1H3 fitlgetule Ttittl'th in in iljrtt gicttcts fitted ant. mating part if tlgc smuc.

TO ALL ween-1T MAY eoncnmv;

Be it known that I, F. J. BURCHAM, of Racine, in the county of Racine, and State of Wisconsin, have invented a new and improved Machine for Softening or Dressing Leather or Skins; and I do hereby declare that the following is a'full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being bad to the accompanying drawings, forming part of this specification, in wl1ieh--- v Figure 1 is a top or plan view of my improved mnehine.

Figuc 2 is a vertical cross-section of the same taken through the line a: w, fig. 1.

Figure 3 represents a modification of the stretching-frame.

Figures 4 and 5 represent different forms of clamps for securing the leather. to the frame.

Figure 6 represents a spring hook for securing the leather to the frame.

Similar letters of reference indicate like parts. I

My invention has for its object to furnish a convenient and efl'ective machine for softening or dressing leather, particularly buck-skins, calf-skins, kid calf-skins, line, but equally applicable to other kinds of skins, whether having the hair on or off; and it consists in the combination of the quadruple crank-levers and pitmen with eaehother and with the stretching frame to which the leather is attached. and in the construction of the fromes, clam ps and spring hook for holding the leather;

A is the frame of the machine. B 13' are bean 1s passing diagonally across the machine from post to "post and at n. suflicicnt distance apart to receive the quadruple crank between them. C is the crank-shaft, the lower end of which is pivoted in a socket formed in the middle of the beam B. The upper end of the crank-shaft C revolves in hearings in the middle part of the beam 13, above which it projects for the attachment of the crank'P, by whichthc machine is operated. Upon the crank shaft 0 are formed four cranks, c c c c, at right angles with each other, as shown in fig. 1. To the cranks c and 0 which extend out upon opposite sides of the axis of the shaft C, are pivoted the ends of the pitmen l) and 'D", and to the cranks a and c" are pivoted the ends of the pitmen I) and D", as shown in the drawings. The other ends of the pitmen D are pivoted to the upper ends the levers E, the middle parts of which are attached to the shafts F, the ends of which are pivoted to the corner posts of the frame A. If desired or convenient, the middle parts of the levers E may be pivoted to any suitable and suflicient support. To the lower ends of the levers E are pivoted the outer ends of the connecting-rods G, the inner ends of which are branched and arepivoted to the bars of the stretching-frame H. The bars of the stretching-frame H are connected to each other at" their ends, as shown in fig. 1, so that they may all operate in the same plane. The leather or skins may be secured to the frame H by lacing, the laces being passed through holes in thebni's of the frame and in the edges of the skin, or one or more clamps may be attached to each of the barsof the frame H, between the jaws ofwhich the edges of the skins are secured. In the clamp shown in figs. 1 and 2 the inneredge of the bar It is turned up and serrated to form one jaw of the clnmp I. The other jaw is.formed of the plate 2'', the front edge of which is turned down and serrated, and the middle part of the rear edge of which is so'forme d as to enter a slot inthe bar 7t to form the hinge of the clamp. The two jaws are held together, clamping the skin by means of the screw and thumb-nut J. The clamp K, shown in fig-4, is similar in general construction to'a blacksmiths tongs, except that its forward ends are bent over and serrated to form the jaws of the clamp, and there is a hook or eye formed upon the rear end of one of its arms 'or handles for convenience'in attaching it to the frame. The clamp 1L consists of a pair of springjaws, .the rear ends of which are riveted to each other at the proper distance apart to receive the bar-of the frame H, and the forward ends of which are held together to clamp the skin by the screw Z passing through a'hole in'one jaw and screwing into a hole in the other jaw, as shown in fig. 5, or the skins may be attached to the frame by a double spring hook, M, having a hook or eye at one end, by which it is pivoted to the bars of the frame, and a hook at the other for the attachment of the leather, the point of the last-mentioned hook being covered by a spring, m, to prevent the skin from working off whileihe machine is being operated. In the case of light skins, I prefer to use a frame, N, formed of four longer'and four shorter bars pivoted to each other alternately, as shown in fig. 3, the longer bars being connected to the ends of the connecting-rods G. In using the machine, the leather or skin to be softend or dressed is attached to'the stretching-frame by any of; the means herein shown and described and the crank P operated. The effect is that the skin is drawn 0r stretched alternately in different directions, working and softening it to any desired extent.

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

1. The combination of the quadruple, crank C pitmen D, levers E, and connecting-rods G with each other and with the stretching-frame to which the skin is attached, substantially as herein shown and described and for the purpose set forth.

2. The stretching-frame H, constructed and operated substantially as herein shown and described and For the purpose setforth.

3. The stretching-frame N, constructed and operated substantially as herein shown and described and'for the purpose set forth. I p

4. The clamp I, constructed and arranged substantially as herein shown and described and for the purpose set forth.

5. The clamp K, constrncted substantially as herein shown and described, when used for the purpose of attaching skins to a stretching-frame.

6. The clamp L, constructed substantially as herein shown and described, when used for the purpose of attaching skins to a stretching-frame.

, 7. The double spring hook M, constructed substantially as herein shown and described and for the purpose set forth. p i

. F. J. BURCHAU. Witnesses:

JOHN M. Oseoon,

JOHN LONGFELLOW.

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