US2001355A - Die or anchor for tack buttons - Google Patents

Description

y 1935. F. R. WHITE 2,001,355

DIE OR ANCHOR FOR TACK BUTTONS Filed June 18, 1932 40 z I 0 a Patented May 14, 1935 UNITED Application June 18, 1932, Serial No. 618,071"

v v i 2 Claims. My invention relates to new and useful improvements in dies or anchors for tack buttons,

and has for anobject to produce a die or anchor from a thin metal ribbon and to so cut the.

blanks from the ribbon that there-will be absolutely no waste. 7

Still another object of the. invention is to produce these dies or anchors from a thin metal which is cut into the necessary length blanks and the blanks, in turn, drawn to form a shell, after which the shell is to be finished in either one or two forms, as will be shortly explained.

Still another object of the invention is to produce a small die made from blanks cut from a relatively thin ribbon, the opposite ends of the blank being supplements of each other, so

that there is no metal wasted in the cutting of these blanks.

Still another object of the invention is to provide a method of making these small anchors or dies, so that they may be made quickly in large quantities at relatively little cost after the proper dies have once been provided.

25 With these and other objects in View, the

invention consists in certain new and novel arrange-ments and combination of parts, as will be hereinafter more fully described and pointed out in the claims.

Referring now to the drawing showing several forms of blanks and showing two ways in which the finished dies or anchors may be made up,

Fig. 1 is a view of a piece of ribbon stock showing the manner in which the blanks are to be cut;

'Fig. 2 is a view showing a blank drawn into a shell, the shell pressed into its final form, and a bottom view of the die;

Fig. 3 is a view similar to Fig. 1;

Fig. 4 shows a shell, and a slightly difierent manner in which the finished die may be made Fig. 5 shows a piece of ribbon stock out into blanks of a slightly difierent form;

Fig. 6 shows the shell and the resultant die; 7 Fig. 7 is a view similar to Fig. 5; v

Fig. 8 shows a shell and a die somewhat similar to the die shown in Fig. 4; g

' Fig. 9 illustrates still a third way in which the blanks may be cut from the ribbon'stock;

Fig. 10 shows the drawn shell and a slightly difierent form of die, that is, with a dome head;

Fig. 11 is a view similar to Fig. 9; and

Fig. 12 shows a drawn shellfand'a completed 55 die very similar to the die shown in Fig." 8.

Referring .now to thedrawing, and for the moment to Fig. l, thereis shown a fragmentary portion of a ribbon l preferably. made of thin steel, and it will be noticed that the forward end is cut in angular formation, as at 2, while a similar out is made, as at 3, :to complete the N first blank A and to also form the forward end of the second .blankB. Likewise, the-nextrcut 4 willform the'rear of the. blank B and. the be: 7

ginning of the blank C, ad infinitum. i I

From this, it will be seen. that the mes-1 or the ribbo'nblank is-entirely utilized inmaking the little dies or anchors, theonly metal, of course, being wasted being the metaldisplaced by the kerf or cut. I have not shown ,the dies for cutting the blank ribbon or for drawing the blank or form but this practice. is well understood and needs nofurther, consideration;v

Now taking one of the blanks A, for example,

it is placedin the proper die and drawn intc- 'a shell D, the greater part of the draw being from the point 5 to its top 6, while the. corners or ends "I of the blank are also being pressed inwardly to thus complete thelittle -shell, ;as

shown in the first View of Fig. 2. The little shell D is then placed in the proper-die (not shown) and the dome 8 is flattened down to iorm -th e top or head 9 of. the little completed die or anchor, while the .ends orformer corners; I :of the blankare curled inwardly and upwardly, so that they assume the position asshownat lll.

It will be noticed that the shell D just below the top is pressed in or restricted; as-at II, to form the under surface of .the head and also the hub i2. It will be seen that by constricting the shell, as shown, there is also formed a small chamber I3 in thehead of the die which'is to receive the prong :of a tack (not shown), which tack; .in turn, when the button is attachedin the usual button attaching machines, ,willHbe deformed and clenched over thefends or the corners, that now form the bottom of the little die or anchor. 1 I have not shown the tack in position, as

similar type dies and anchors thatare to. be,

placed in buttons arewell known to those skilled in the art. Itis also understood, of course, that these little::dies or ,anchors'are placed in the hollow hubs of shell'buttons and a tack driven up throughcthe bottom oithe hub, -upthrough the die; and there deformedwithin the die to hold the button in place. h

It will be seen that by forming a die 0f metal stock out as shown,vthere is no, waste whatever of the metal ribbon and with the proper dieszi-t is a simple matter-to cut the blank into the ion-m .filSt shownin Fig. l and then draw the form to 'a shell and, lastly, compress the shell and force the side'wallsinwardly and the bottom points upwardly,,thus completing the die.

The. third illustration in Fig. 2 a1.bott;om plan view. of the .completed die showing how the metal is compressed and showing the opening through which the tack passes up into the die.

Referring now to Figs. 3 and 4, the same form of ribbon stock F is shown cut into blanks and a shell I4 is shown, which is formed or drawn similar to the one shown in Fig. 2.

oranchor I5. This die hasthe flat top IS, the

tapered wall I1, and the restricted hub i 8. In this instance, the hub portion IBnis nar-. rower than the hub of the die shown in Fig. 2 and the hollow hub will have a-idiameter just' slightly larger than the prong of the .tackfastener.

In constricting the shell, the points [9 (cor- 1 fners) will be pressed together, as shown at 20,

to thus practically close up the space between the points I9 of the shell, as shown in the first view' of Fig. 4. Also, in constricting the hub, it

will beseen that the metal of the points (corners) is not only'forced together but slightly twisted.

j When a tack is driven up through the hub of abutton (not shown) and into this die or anchor, itwill also be deformed against the upper inner wall of the die, and indeforming will assume. agreater diameter than the diameter of the hollow'hub to thus tightly anchor thedie and button in place.

Now-in Figs. 5 and '7, I have shown how the ribbon stock maybe cut in a different way from that shown in Figs. 1 and 3 and, at the same time, produce the desired blanks without any loss of metal.

- Referring for the-moment to Fig; 5, there is shown the metal strip I and. the blanksA', B,

and C, and it will be seen that, taking one of the blanks for example-say A, there is a cutaway portion at one end,- asat 2|, leaving the 'resultanttongue 22 above the" same. The rear of theblank A will have a cut-away portion 23 and a resultant tongue 24. Howeventhe tongue 24 is diagonally positioned withregard to the tongue 22. Thus, it will be seen that by cutting the'ribbon blank in this manner, the one end is "asupplement of the other, in this way utilizing all of the ribbon stock to make up the multiple blanks.

- The blank is'then drawn elm the shell 25,

and it will be noticed that two corners 26 are slightly shorter than the others but when the die is pressed into its final shape and constricted, 'as at 21,the lower edges of the points of the shells will be turned upwardly and inwardly, as at 28, where any difference in length of these resultant points would not be of any disadvan- In Figs. 7 and 8', the same manner is used in hurti g the blanks A'-'-; and'the shell 25' is similar to the shell 25, whereas-the little resultant die 26'," after pressed into shape, will be very Similar to the die I5, the only difference being the metal along'the lower edge'of the hub of the die. r

* Referring now to Figs. 9 to 12 inclusive, there is still'a third way' of cutting this ribbon stock I into little blanks A In this instance, the blank is outwith a tongue 30 centrally of the blank atone end and two small tongues 31 at the rear of the blank. Thus, inv cutting the rear of the blank A the front of the succeedingblank will be formed, as'is perfectlyobvious.

.In'Fig. 10, I have shown the little vshell 33 drawn from the blank with its dome 34 and,

I guide for a tack.

if'desired, I can form the resultant die 35 slightly different from the dies 1 I and 27, that is, I can compress the walls, as at 35, compress the hub, as at 31, but leave a small circular dome 38, as maybe clearly'seen. This small dome might be formedin the other dies above-described. The lower ends 39 (corners) of the shell will be pressed inwardly and slightly upwardly (not shown) similar to the ends of the die shown in Figs. 2 and 6. H I

In Figs. 11. and12, the little blanks are cut in the same manner, and a shell 33' may be pressed to: have a flat'head 40, if desired, while the little hub 4! will have a'short end, as at 42, but'when the littlesh'ell is constricted to form the narrowhub, the space betweenthe corners ,will be fairly well filled up, and inasmuch as'the tack is to be forced up into the head of the die or hollow-chamber of the die, no detriment.

From the foregoing, it will be seen that in .all' threejorms I utilize a metal ribbon andcut elongated shell, after which the side of the shell is pressed inwardly to form'an upper chamber in the die while the lower ends of the shell may be either turned inwardly and slightly upwardly, as showniin the one form, or may be just swedged or. squeezed together to produce the other form of die.

- It will also be noticedqthat after the shell is drawn to shape, there is considerably less stock to be turned up in the shell or to form'the shank of the other form of die; This has two advantages. First-it provides stockwide enough toform a substantial solid walled head and, second, calls for much less p essure and strain on the tools when completing the die or, anchor. Many slight changes are possible without in any Way departing from the spirit of the invention. a Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:- r

1. The method of forming adie for tack buttons which consists in cutting blanks of steel ribbon stock, the forward end or the blank being thereverse of the rear end, drawing the blank into a shell having a rounded bottom and serrated rim, and the serrations being of varying lengths due to the shape of the cut blank, compressing the dome oftheshell to form a head, drawing in the remainder of the shell to form a restricted hub, and-forcing the uneven length serrations 'upinto the hub to provide a 2. The methodof forming a die for task buttons which consists in cutting blanks of steel ribbon stock, the forward end of the blank being the reverseof the rear, drawinglthe blank into ashell, compressing the dome of the shell, and

constricting the side walls of theshell to form a hollow head and a constricted hollow hub, the lower edge of the hub having serrations or teeth of different lengths, said teeth being turned upwardly withinfthe hub attheir base to form .a guideway within the hub for a tack.

' FRANKLINR. WHITE.

the short end is e

Images