US157572A - Improvement in dies for nut-making machines - Google Patents

Description

I 2Sheets--Sheet1. R. BLAKESLEE.

Dies for Nut-Making Machines. N0.\57,572. Patented Dec.8,1874.

' 2 Sheets--Sh|eet 2. l. R. BLAKESLEE. Dies for Nut-Making Machines; N0 ]57 572 I Patented Dec.8,1874.

UNITED STATES PATENT OIIFTIGFlr I JOHN R. BLAKESLEE, OF CLEVELAND, OHIO, ASSlGNOR TO THE RHODES RIVET COMPANY, OF SAME PLACE.

IMPROVEMENT IN DlES FOR NUT-MAK ING MACHINES.

Specification forming part of Letters Patent No. 157,572, dated December 8, 1874; application filed August 1, 1874.

To all whom it may concern:

Be it known that I, J OHN R. BLAKESLEE, of Cleveland, Cuyahoga county, State of Ohio, have invented Improvements in Machines for Making Hot-Pressed Nuts, &c., of which the following is a specification:

My invention has for its object to improve upon that class of nut-machines which are constructed' for manufacturing hot-pressed nuts, the prime feature being to construct a nut-machine in such a manner that a hotpressed nut can be produced without having fins or burrs on its side surfaces-usually due to the action of the cutters-the result being that the tedious milling operation heretofore resorted to is dispensed with, and by such construction I am enabled to produce hot-pressed nuts much cheaper than heretofore.

My invention consists in forming the die-box of a hot-pressed-nut machine in five parts or sections, each made with a fiat surface for the side of the nut, and with mitered corners at about an angle of forty-five degrees to such flat surface, in such a manner that, when the mitered portions or surfaces of said parts or sections are brought together in proper position, a die-box, having a square or polygonal shaped interior, is formed, within which the nut is constructed. One of said parts or see tions is divided transversely, to form two parts or sections, in one of which is formed an aperture, while the other forms the cutter for severing the blank from the bar when inserted into the die-box through such aperture; the object being to have the bar between such cutter and the punching-die, when inserted into the die-box, so that the blank is encompassed on all sides and prevented from spreading in width, the metal being forced or crowded tothe section of the die-box. through which opening the bar from which the nut is formed is inserted into thedie-box, is combined a cutting and punching die, a swage or cup, and a punch, all constructed and operated, by suitable gear, in such a manner that, when a bar of iron of the proper width is inserted into the die-box, the cutting and punching die moves toward the stationary cutter, and, by the combined action of the same, severs the blank w from the bar, said box retaining the blank in position for the swage and punch to perform their office of swaging and punching the blank, which being accomplished within the diebox, the swage and punch recede, when the cutting and punching dies advance still farther, and discharge the completed nut from the die-box free from fins and burrs, and thus ready for the market without further manipulatioh.

In the accompanying drawings, Figure 1 is a vertical central section of the die-box, dieholder, cutting and punching die, the swage, and the punch in position to receive a bar of iron. Fig. 2 is a similar section, illustrating the position of the several parts of the blank being severed from the bar, the same being acted upon by the swage and punch. Fig. 3 is a vertical section, illustrating the position of the severed parts, the nut being completed and discharged from the die-box. Fig. 4 is a perspective view of the chuck or die-holder, the (llG'bOX being removed. Fig. 5 is a perspective view of the die-box, removed from the chuck or holder. Fig. 6 is a perspective view, illustrating the construction of the sections which form the die box and cutter when brought together.

Like letters of reference indicate corresponding parts in each figurev of the drawings.

Referring to the drawings, the letterA designates a chuck or die holder, being constructed with an enlarged opening, a, and seat b, for receiving and supporting the die-box. Said chuck or holder is constructed so as to be connected with the-bedplate B of a nut-machine, and provided with a suitable opening,c, through its die-supporting seat, to receive the cutting and punching die, while one of its side walls is constructed with an opening, 01, of a suffia trapezoidal formthat is, constructed with fiat or plane sideswhile the corners are mitered off at about an angle of forty-five degrees to the surface 70, as illustrated in Fig. 6, so that when the mitered portions of said sections Zm are placed in juxtaposition to form a die-box, as in Fi 5, the interior of the same will be of a square or polygonal shape. One of the sections is divided transversely, to form two parts, h i, one of which-for instance, h is cut away, as at n, in such position as to co incide with the opening cl in the chuck or die holder, when placed therein, so as to enable a bar of iron, being readily inserted through such openings into the die-box, to be subjected to the action of the cutting, swaging, and punching mechanism. The part '5, together with the part h, forms one side of the die-box; but the prime object in so separating the same is to utilize the parti as a cutting instrument, capable of being removed for repair, regrinding, or for substituting a new cutter when it becomes deteriorated by constant usage. This cutter i, when in its scat, becomes, in fact, a stationary cutter, and is confined therein by any suitable fastening medium, so that it cannot be displaced when subjected to pressure, as in cutting a blank from a bar of iron. Said cutter forms a covering or wall for the bedopening d, and if made in one piece with the section h, and the opening cl cut therein, it

would accomplish to some extent the purposes hereinbefore named; but, should its edge become worn by constant cutting action, it can only be resharpened with specially-constructed tools, requiring much care, skill, and labor, and would in short time necessitate the lay in g aside of the entire action.

This mode of constructing a die-box for manufacturing hot-pressed nuts is superior to and more economical than any construction that I am aware of, since all that is essential is to bring a bar or plate of steel, or other suitable metal, to a width equal to the distance between the walls of the chuck or die holder, and then miter the corners, after which sections of equal or of the desired length are severed from such mitered bar. Further, when the faces 7c of the sections are worn or impaired by usage, the same can be planed as heretofore die-boxes when injured or deteriorated by use have been cast aside and used only as scrap.

The dressing or redressing of the faces is best accomplished by arranging the several sections in line with each other, as in Fig. 6, but, of course, with their ends in close union. The cutting and punching die D is of the usual tubular form for receiving the end of the punch and conducting off the punehings, and is provided with a suitable collar, a, for resting upon the slide E, so as to form a substantial basin when meeting with resistance. Said punching and cutting die is constructed and operated by suitable gear, so as to traverse through, ornearly through, the die-boX, and is made of a shape corresponding with the shape of the interior of said die-box, but of a size somewhat less than the said interior, whereby an intervening space is created between the two, the result being that provision is made for the expansion of the cutting and punching die, such. expansion causing it to fill the interior of the die-box on all sides.

The swaging and punching of the blank is .peformed within the die-box immediately after the blank has been severed, and such is accomplished by the swage or cup E, which may be provided with a fiat or;concave face, according to the form desired to be imparted to the nut. Said swage or cup is provided with a collar, a, for bearing on the swageslide G, to enable it to remain fixed upon its seat when subjected to pressure, and is constructed with a central opening, through which passes the punch or piercer H, constructed with its slide I, so that said swage or cup, and the punch or piercer, are made to move together by their respective slides, for acting upon the blank in the die-box, and then retreat to enable the completed nut to be discharged. The bar from which the nut-blank is to be out should be of a width less than the width of the die-box, so that the spreading of the iron during the operation of cutting, swaging, and punching will expand the nut to the full size of the die-box in cross-section.

The cutting and punching die, the swage or cup, and the punch or piercer have motion imparted to them by their respective slides, which are acted upon by a suitable system of cam or eccentric gearing at the proper de termined movement, the construction and arrangement of such being that the cutting and punching die is always brought to such a position that the bar of iron inserted into the die-box will be between the cutting and punching die and the cutter in the wall of the dieboX, as clearly illustrated in Fig. 1, preparatory to severing the blank from the bar. The cutting and punching die is thus caused to advance toward the cutter in the wall of the die-box, passing the feed-opening, severing the blank from the bar, and remaining stationary in such position, supporting the blank until the swage and punch are caused to advance and perform their office of swaging and punching the blank, as in Fig. 2, and then retreat, when the punching and cutting die, continuing its forward path, forces the nut out of the die-box, as illustrated in Fig. 3.

The nuts thus formed are completed ready for the market. They require no further manipulation, such as milling, which is always essential in hot-pressed nuts. They are formed perfectly smooth, free from all pins, burrs, or other ragged edges, an d such great desideratum and economy in production are accomplished by feeding the bar directly into the die-box through its wall, so as to have the blank while it is being cut encompassed on all sides, so as to force or crowd the metal together, thus effectually preventing the metal from spreading in width.

I claim as my invention- 1. The sections or walls of a die-box for forming hot-pressed nuts, constructed with a flat surface or face, k, and with mitered corners l m, substantially-as described, for the purpose specified.

2. In combination with the sect-ions cf 9, the sections h t, forming a die-box, the section h having a feed-opening, and the section 2' serving as a cutter, substantially as described.

3. The combination, in a machine for making hot-pressed nuts, of a die-box made up of a series of sections, one of said sections being constructed with a feed-opening and a cutter to admit of a bar of iron being fed into the die-box between the said cutter and the cutting or punching die, and be encompassed on all sides to prevent spreading of the metal, substantially as described.

In testimony that I claim the foregoing I havehereunto set my hand.

JOHN R. BLAKESLEE.

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