US848844A - Double-action press. - Google Patents

Description

110.848.844, j PATENTBD'APR. 2, 1901.

-P.o.B.PAGE.-

* DOUBLE ACTION PRESS;

kAPPLIUATION FILED -SEPT. 12.1803.v

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PATENTED APR. 2, 1907. P. G. B. PAGE.

DOUBLE ACTION PRESS. nrmoulox FILED snm-12.1903.

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narran srafrns PATIENT AOFIQR.,

FRANK C. B. PAGE, OF N EW YORK, N. Y., ASSIGN OR TO E. IV. BLISS COMPANY, A CORPORATION OF VEST VIRGINIA.

DOUBLE-ACTION PRESS.

Specification of Letters Patent.

Patented April 2, 1907.

Application iiled September l2, 1903. Serial No. 172,856.

' Iication.

My invention relates generally to punching and drawing presses, and has more particular reference to a double-action press for punching out and drawing up sheet-metal articles.

The class of metal articles which my press is especially adapted to blank and form is conveniently represented by tin tags such as are used on plug-tobacco for the purpose of trade-marks, by wire-clasps which hold together crossing-wires in railroad-lanterns, and by many other articles of the same type. Articles as above mentioned require in their manufacture two distinct operations-viz., one cutting-out or blanking operation and one to impart the 'linal shape by stamping. Previously to my invention these two operations were performed upon the material by socalled double dies in single-acting pressesthat isto say, the article was first blanked out in one die and from this die it was transported to and formed up in another die, mounted in the same press adjacent to the 'lirst die, and connected with the latter by means to carry the blank from the first to the second die. It is obvious that this method entails an amount of careful adjusting and watching of the tools, and, indeed, because of lack of positiveness it yielded but a limited output oi very poor quality. This disadvantage is obviated by my invention, in which the so-called double-action dies are employed to perform the two operations required in the manufacture of the articles above mentioned,which dies are distinguished from the so-called double dies in that they do the blanking and forming in one and the same place, and it is preferable to use such dies in a double-action press, though singleaction presses may be employed if the die is suitably arranged.

In carrying out this inventionI construct a die with an outer and aninner member, both of which partake of the punching operation, one of the said members being l'urther utilized to draw up the product. In other words,

the drawing-up member is utilized to do part of the cutting.

The embodiment of my invention may of course be widely varied without departing from the invention butfor the purpose orrendering a concrete explanation I have shown one form in the accompanying drawings and described the same more fully in this speciiication.

In the said drawings, Figure l is a general view of part of a press, showing the relation of my improvement to the same. Fig. 2 is a vertical sectional view through the slide members of the press. Fig. 8 is a vertical sectional view of the die, punch, and adjacent parts, the section being on the line of Fig. 4. Fig. 4 is a plan view of the die proper with the punching members in position. Fig. 5 is a sectional view of part of the die and punch shown in Fig. 3, occupying a different position. Fig. 6 is a perspective view of the iinished product.

Similar letters oi reference indicate corresponding parts in the diii'erent views.

The particular press described is especially adapted to cut and draw up metal tags for plug-tobacco, but may of course produce different products by constructing the parts differently. For the sake of convenience these tags are generally stamped out two-at a time but any other number found suitable could of course be stamped out with each operation of the press.

The product of the present press is shown in Fig. 6, where l indicates the tag, composed of a body portion 2 and two projections 3 'for attaching the said tag to the tobacco. The body portion can of course be oi' any shape desired and the projections could likewise be of any desired Jform and of any number.

4 denotes a press of any suitable construction and provided with a framework 5, properly supporting the parts.

6 isthe punch, and 7 the die. The die is formed in the present instance with a main aperture 8 of substantially the same shape and size as the body portion of the product, terminating at its lower end in an enlarged aperture 9 to allow the product to drop below into a suitable receptacle and with one or more auxiliary apertures l() of the same shape and size as the projections or dependcnt edge or edges of thel product extending IOO to a point somewhat above the lower end of the main aperture 8 and closed at its lower end, but communicating on its side with the said main aperture S, so as to make the product integral.

The punch is composed of an outer and an inner slide member, respectively, 11 and 12. The inner member is provided with a main plunger 13, extending through the outer member 11 and also through the blank-holder 14 and into the main aperture S, which latter is adapted to receive the said main plunger. The outer member is provided with one or more auxiliary plungers 15, located immediately adjacent to the main plunger and adapted to enter into the auxiliary aperture 10.

The slide 11, which actuates the inner member, is operated from the crank-pin 19, carrying the yoke 17, attached to said inner member, carried by the shaft 1S, while the outer member is operated by means of the rollers 20 and the cams 21, mounted on the shaft 1S. p In practice the sheet metal is placed upon the die, whereupon the punch descends, both the inner and outer members of which descend simultaneously, so that the main and auxiliary plungers reach the sheet metal at the same moment, thereby euttingout the blank. The further downward movement of the two members causes the blank to enter the main and auxiliary apertures. rllhe downward movement of the inner member and the main plunger then continues, while the downward movement of the outermember and auxiliary plunger ceases, owing to the fact that the cams 21 are provided with a V[lat surface 22, which acts as a dwell, so that the outer members remain stationary. independent continued downward movement or the inner member then pushes the blank still `farther down, whereby the said blank is drawn up over the main and auxiliary apertures and is ultimately pushed down into the enlarged aperture 9 and out of the machine. The spring 16 acts to move the outer member up again when released by the cams 21.

Having thus described my invention, what I` claim is- 1. In a press, the combination with a die, having a main aperture and an auxiliary aperture, communicating with each other, the

This

main aperture being of greater depth than' the auxiliary aperture, two members slidably mounted, a main plunger on one of said members, an auxiliary plunger on the other of the said members, and mechanism `for moving the main and auxiliary plungers respectively into the main and auxiliary apertures, the parts being so arranged that both plungers act to cut out the blank and to move it into the said apertures after which the motion of the auxiliary plunger ceases while the motion of the main plunger continues thereby drawing up the blank by moving it entirely into the main aperture.

2. In a press, the combination with a die, having a main aperture and an auxiliary aperture, communicating with each other, the main aperture being of a greater depth than the auxiliary aperture, two members slidably mounted, a main plunger on one of said members and an auxiliary plunger on the other of the said members, and mechanism for ineving the main and auxiliary plunger-s respectively into the main and auxiliary apertures, the parts being so arranged that the main plunger acts to cut out the body of the blank and the auxiliary plunger acts to cut out a projection Jfrom the body of the blank, the said blank being thereby moved into the said apertures after which the motion of the auxiliary plunger ceases while the motion of the main plunger continues, thereby drawing up the blank by moving it entirely into the main aperture.

3. In a press, the combination with a lower female die, and an upper movable male die composed of two members, both of which act to cut the blank simultaneously, and one of which acts to draw up the blank.

l. In a press, the combination ol' a female die, two reciprocating members adapted to coact with the said die to simultaneously cut a blank, one of said members acting further on the blank by moving the portion cut out by the other member from under the same, thereby drawing it up.

Signed at New York city this 29th day of August, 1903.

FRANK C. B. PAGE. Vitnesses:

OTTO S. BEYER, HARRY C. MOULD.

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