US436187A - Die for making car-axle-box lids - Google Patents

Description

(No Model.)

W. PENNOGK.

DIE POR MAKING CAR AXLB BOX LIDS.

No. 436,187. Patnted Sept. 9, 1890.

UNITED STATES PATENT OFFICE.

WILLARD PENNOCK,

o'E IvIINEEvA, oHIo.

DIE FOR MAKING CAR-AXL'E-BOX Ll DS.

SPECIFICATION forming part 0f Letters Patent No. 436,187, dated September 9, 1890. Application filed February 25, 1889. Serial No. 301,008. (No model.)

To all whom it may concern:

. Beit known that I, WILLARD PENNOCK, a citizen of the United States, residing at Minerva, in the county oI` Stark and State of Ohio, have invented certain new and useful Improvements in Dies for Making Car-Axle- Box Lids; and I do hereby declare the following to be afull, clear, and exact description of my 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 drawings hereto annexed, which form a part of this specification, and in which- Figure 1 is a longitudinal sectional View, on a vertical plane, of my improved die for making car-axle-box lids, showing the same complete and in operative positionl and having a pressed box-lid between the upper and lower die-sections. Fig. 2 is a perspective inverted view of the upper die-section or relief die. Fig. 3 is perspective view of the lower die-section or intaglio die. Fig. 4 is a perspective view of the inner side of a pressed or stamped axle-box lid, showing one of its corners'(which is to form one of the hinges) in the shape and position in which it comes from the die, and the other or opposite corn er bent to form the hinge of the complete lid; and Fig. 5 is a plan of the steel blank used by me in pressing or stamping the lid in my improved die. A

Like letters of reference denote corresponding parts in all the figures.

My invention relates to dies for pressing or stamping lids for the journal-boxes or axleboxes of railway-cars from a iiat blank of steel or other suitable metal, and is more particularly adapted to press lids of the character described and claimed by me in my application for Letters Patent, Serial No. 275,110, filed on or about May 25, 1888, having for its object to produce such lids in a simple, expeditious, and inexpensive manner, while at the same time the lids pressed or stamped in my improved die shall present a neat, iinished, and symmetrical appearance.

With these objects in view my present invention consists in the improved construction and combination of parts of the die, which will be hereinafter more fully described and claimed.

Reference being had to the accompanying drawings, the letter A designates the bottom section of the die, or so-called intaglio die,

while B denotes the upper section or so-called 5 5 relief die, both sections being made, preferably, of cast-iron.

The bottom die A is provided at or near one end with a transverse groove or channel C,running across the die f-rom one side to the' 6o other and merging with its middle portion into a recess or depression D in the deepest part of said recess, which gradually decreases in depth toward the opposite end of the die, formir g a gradual slope or incline D. the point where the shallow part of this depression or recess D D terminatesisasquare or rectangular pocket E for the insertion of a removable block F, also square or rectangular in cross-section, the upper part of which, i 7c when placed in the pocket, projects above the plane surface of the die, as clearly shown in Figs. 1 and 3 of the drawings. In order to facilitate the removal of this block F when desired, the body of the die A may be bored through from the bottom of the pocket E to the under side of the die, as shown at e in Fig. 1, so that by inserting a rod through this bore or aperture from the under side the block F may readily be pushed or punched 8o out of the pocket.

The upper die-section or relief-die B is provided at or near one end with a raised transverse rib or scroll Gr, of such dimensions and configuration that it will fit into the registering-groove C of the lower die when the twoare placed together in their operative position. This rib or scrollGintersectsaraised bulge or boss H on the face of the die at the highest part of said bulge or boss, as clearly 9o side or cutting-edge of a removable knife or roc cutter J, which is inserted removably into a pocket K in the body of die B, said pocket being located between the cut-away edge a of the recess I and the lower part of the sloping boss Il. This recess I should be of sufficient size to receive the metal of the blank as it is being pressed up into it by the registering-block F of the lower die without cutting the blank, except along the edge a, where it. impinges upon the registering-edge of the knife or cutter J, by which a slot s is cut through the blanksimultaneously with the process of stamping or pressing the blank into shape and forming the pocket P.

In order to facilitate the removal of the knife orcutter J, when desired, for sharpening or renewal, the pocket K, into which it is inserted, may be bored through to the top of the die in like manner as the pocket E of the bottom die, so as to form a boreor aper ture 71: for the insertion of a rod or bar, by means of which the cutter may be pushed out. In this manner it will be seen that the shapingblock F, which forms the pocket P of the finished box-lid and also operates in conjunction with the cutter J to cut the slot s through the blank as well as the cutter J itself, both of which parts are subjected to the greatest amount of wear and strain in operating the die, can easily be removed for sharpening and reshaping or for the substi` tution of new ones whenever required, which said renewal or substitution can be effected in a moment of time and without disturbing or altering the other Yparts of the'die in the least. j

From the foregoingdescription, taken in connection with the drawings, the operation of my improved die will readily be understood without further explanation. After the blank of steel or other suitable metal has been cut to the proper shape, approximately as shown in Fig. 5, it is placed between the two die-sections, the blank having first been properly heated, after which the upper or relief die is pressed down upon thelower or intaglio die and the superimposed blank in a suitable press adapted for the purpose or by other means, by which operation the portions in relief on the upper die will force the blank into the registering recesses or depressions in the lower die, so that the blank will assume the shape shown in Fig. i-z'. e., having the ears or turned-up corners L, the raised swell or bulge M, the slot s, and the spring-pocket I). A groove or bead L is formed just back of the turned-up corners L by the transverse scroll G, operating in conjunction with the registering-groove C, and by turning over or folding'the raised edges L along the outside of the bead or corrugation L', as shown at L2 in Fig. 4, complete hinge-eyes are formed for hinging the lid to the axle-box.

It will be seen that when the two parts or sections of the die are placed in their proper relative positions to eac-h other, ready for work, the block F forms a projection on the face of the bottom die A, while similarly the knife or cutter J forms a projection from the pocket I in the upper die B.

Having thus described my invention, Iclaim and desire to secure by Letters Patent of the United States- Apair of dies for stamping orpressing car axle-box lids` comprising an intaglio die formed with a recessD D at its middle, l1aving a bottom inclined downwardly toward said top edge, a vertical rectangular pocket E, the inner edge of which intersects the inner edge of recess D D', a vertical bore or aperture e, intersecting pocket E, a rectangular block F, fitting in pocket E, a reliefdie B, formed with an inclined bulge or boss II, a rectangular recess I, a pocket K, between the lowcrmost point of boss H and recess I, a vertical pocket 7c, intersecting pocket K, and a knife or cutter J, located in pocket K, substantially as described.

In testimony whereof I sign this specification, in the presence of two witnesses, this 1st day of February, A. D. 1889.

WILLARD PENNOCK. W itnesses:

WM. K. GRAY, Louis BAGGER.

Images