US140567A - Improvement in dies for making sheet-lead - Google Patents

Description

2 Sheets--Sheet I N. YORK. Dies for Making Sheet Lead No. 140,567. atemediulyhl873,

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NELSON YORK, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN DIES FOR MAKING SHEET-LEAD.

Specification forming partof Letters Patent No. 140,567, dated July 1, 1873; application filed March 26, 1873.

To all whom it may concern:

Be it known that I, NELSON YORK, of Boston, in the county of Suffolk and State of Massachusetts, have invented a certain new and useful Improved Construction and Application of Dies for the Manufacture of Lead and other Metals or Combination of Metals in Sheet Form; and that the following is a full, clear, and exact description of the same, reference being had to the accompanying plate of drawings.

This invention relates to dies for the manufacture of lead and other metals in a continuous sheet form by means of hydraulic pressure; and the invention more particularly relates to the construction of both the die and its block or holder. To this end the invention consists in the combination of a slotted and recessed die-holder with a linear die-blank, each so arranged for the die blank to be wedged in the recess of the die-block, as hereinafter fully described. It further consists of certain other improvements, too fully described hereinafter to need preliminary explanation.

In the accompanying plates of drawings my invention is illustrated. In Plate 1, Figure l is a front elevation of the die-block and the cylinder of a press suitable ,for the manufacture of lead, using hydraulic pressure. Fig. 2 is a central vertical section in plane of line a: m, Fig. 1. In Plate 2, Fig. 3 is a plan view of the die-block with the cylinder removed. Figs. 4, 5, 6, 7, and 8 are severally plan views of the recess to die-block, showing modifications in the construction of recess and of arrangement of die-plates in the recess.

A in the drawings represents the die block or holder, and B the cylinder, of a press of the class to which this invention relates, the cylinder receiving the molten metal for being forced through the die carried by the dieholder. The die-block and cylinder are fastened together, the cylinder upon the block, by screw-bolts and nuts, so that under the ordinary operation of the press from hydraulic pressure the two move together, and as one. The lower portion of the die-block at one side, 0, is open across the width of the block, to allow the lead in the sheet form in which it is made in the press to pass to the outside of the press, as is now the case in the ordinary leadpipe presses. D, the upper face of the die,- block with the cylinder B removed; a, a slot or elongated opening in upper face D of dieblock A. This slot (4 has parallel sides and ends, and corresponds in the direction of its length to the line of open chamber Gin under part of die-block, and into such chamber 0 it opens. Said slot at is somewhat below the dieblock face D, and at 'each side of it, in a direction along its length, the block A is cut away, making a channel or recess, or groove or way, E. This recess E, in all the figures except Fig. 8, is shown as open at each end, and in all its bottom face is parallel to the face D of die-block A, and is bounded from end to end by upright sides or walls b b, shown in Fig. 4 as parallel with each other, but at an angle to the length of the slot a of die-block, in Figs. 5 and 6 as at a similar acute angle to said slot at, and in Fig. 7 by one edge, 1;, parallel with said slot at, and by the other edge, N, as at an acute angle to slot at, running from a point midway, or nearly so, of the length of said slot in opposite directions, leaving the recess the narrower midway, or nearly so, between its two ends. F, the die plate or blank. This die-plate F is shown in Fig.8 as of and in one piece of metal, and in the other several figures, 2 to 7, inclusive, as of and in two parts or pieces, 0 and 01, respectively, in the direction of its length.

In Figs. 2, 3, 4, and 5, the two parts a and d are shown as of a taper form end to end, and in Figs. 6 and 7 as straight and of even width from end to end, and in all the several Figs. 2, 3, 4, and 5 the slot or opening fin and through the thickness of the die is made by cutting out the edge of the die part c in contact with the edge of the die part 61, along the length of the central portion of such edge in Fig. 6, by similarly cutting out both contactedges of the two parts, and in Fig. 7 by the interposition between and at both ends of the two die parts 0 and d of separating blocks or plates In Fig. 8 the die-blank, as before stated, is one piece, and its outline, as well as that of the recess E of the die-block A, is such that it is surrounded or bounded on all sides by the walls of the recess.

The several die plates or blanks shown in the several figures are all in thickness equal to the depth of the recess E in die-block A, so that when the cylinder B is located upon the die-block it will rest and bear on the upper face of the dieplates.

By Figs. 4 and 5, wherein the die parts are of a taper from end to end, and the walls I) b of the recess E in die-block in the one instance, Fig. 4, parallel to each other, but angular to the slot a of die block, and in the other instance, Fig. 5, at an acute angle to each other and to said slot a, in order to bring the opening f of die-blank over slot to of die block the parts of the die-blank are inserted in the one case, Fig. 4, oppositely to each other-that is, the larger end of one part at the smaller end of the other part, and vice versa-and in the other case, Fig. 5, correspondingly and similarly with each other-that is, the larger ends and smaller ends side by side-and then, after such insertion, the two parts are driven along the length of the recess, under their arrangement in Fig. 4, the one in the opposite direction to the other, and in Fig. 5 in the same direction, whereby the die-parts are wedged in the recess and thus firmly fixed and located against accidental displacement, making a close and tight joint between the contiguous or contact edges of the two parts.

\Vith a construction of die-blank and a recess, E, therefor, such as shown in'both Figs. 4 and 5, the wedging of the die-blank in recess E is accomplished by and through itself but in Figs. 6 and 7, where the die-blank is straight and of even width, it is wedged by the use of separate and distinct wedge-pieces, h. The result and effect, however, in all the cases are the same. Although in the several figures, except Fig. 8, the die-blank is shown in two parts, obviously in all the relative constructions of the die-blank and recess E, shown by the several figures as excepted above, the die-blank could be in one piece and the same result obtained, except as to the arrangement and construction shown by Figs. 4: and 7, wherein separating-blocks are employed.

Under every arrangement of die-blank F and recess E shown in the drawings, and every equivalent therefor, the cylinder B of the press when located is to rest upon the upper face of the die-blank, thus binding the blank to its seat in the recess of the die-holder in the direction of its thickness, and in that way still further securing the blank against dislocation or movement. In the drawings this rest of the cylinder upon the die-blank is through a plate, H, forming a bottom, to the chamber of cylinder B when the cylinder is in place. This plate, under the arrangement shown, fits between the raised parallel edges Z l of the die-block, resting upon the faces m, each side of the recess. The plate is made of a suitable shape to cover and seal the joints of the die-blank with the recess of die-block to the entrance of the molten metal thereto in the operation of the press, and it is made with a slot or opening, a, in suitable position for the molten metal to pass out of the cylinder and enter the slot of die-blank. Within the cylinder B its bottom is made inclining toward its discharge-opening to the die-slot; or, in other words, tunnel-shape, as shown at 0, Fig. 2, more particularly thus in the operation of the press, securing an easier flow or movement of the metal toward the said dischargeopening a, and economizin g in power required to drive the molten metal through the dieopening.

With a hydraulic press adapted to mold molten metal-for instance, lead-such as is now used for the molding of lead pipe, adapted in the construction of its die-holder, its die-blank, and its cylinder, substantially as as shown and described herein, obviously, by the ordinary operation of such a press, the molten metal or lead can be molded into a sheet form of any desired continuity as to length and, as to thickness and width, of any desired degree or extent, the molten metal as fast as so molded passing out of the press at the opening in the lower part of the block.

In lieu of wedging the die-blank into the recess of its holder or block, as has been herein described, screws may be arranged in the die-holder, as shown in Fig. 8, to act against the outside edges of the die-blank, pressing on the same in a direction across its width, and screws acting in this way may be employed as 'well with the wedging of the dieblank into position; but a wedge construction and an arrangement of parts of themselves are deemed most preferable; and the extension of the dies to the outside of the die-holder is also most preferable, as with simply loosening the fastening of the cylinder to the die-block, which, as is obvious, will reduce the bind on the die-blank between it and the die-holder, a die-blank can be removed and reinserted, or another inserted, as may be desired.

It is found desirable to flare or round off the edges of the die-slot, as shown in Fig. 2, as the molten metal then can pass the more freely through the die-slot; and, furthermore, it is intended, in case the die-blank is in sections or parts, to mark them, so that in placing them in the dieblock its proper place, as regards the slot in die-block, may be insured with readiness and certainty.

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

1. The combination of. a slotted and recessed die-holder with a linearly-slotted dieblank, each relatively constructed from end toend for the die-blank to be wedged in the The above specification of my invention recess of the die-block, substantially as heresigned by me this 4th day of March, A. D.

in described, for the purpose specified. 1873.

2. In combination with a slotted and re- NELSON YORK.

cessed die-holder, constructed as described, a v

die-blank made in two parts, from end to end, Witnesses:

and otherwise constructed and adapted to ALBERT W. BROWN,

secure a slot through the same, substantially G. W. WINNETT;

as set forth.

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