US1098071A - Manufacture of blanks such as are used in the manufacture of forks, spoons, handles, and similar articles. - Google Patents

Description

A. WILZIN MANUFACTURE OF BLANKS SUCH AS ARE USED IN THE MANUFACTURE 0]? FORKS, SPOONS, HAND AND SIMILAR ARTICLES.

APP 0 TION FILED APR. 26, 1911.

Patented 26, 1914.

1 2 SH S-BHEET 1.

Flg, 2 WWW/WWII/I/MMM H {X Fig.6.

COLUMBIA PLANOGRAPH CO..WAsnmumN. DIC- A. WI N.

MANUFACTURE OF BLANKS SUCH AS ARE US N THE MA v GTURE OF FORKS, SPOONS, HANDLES, AND SIMILAR ARTIGL APPLIOATION FILED APR. 25, 19.11.

1,098,07 1 Patented May 26, 1914.

2 SHEETS-SHEET 2.

MW Ri e, wt

1mm W ZW EINTTEE STATES PATENT @FFEQE.

ARTHUR WILZIN, OF ST.-OUEN, FRANCE.

MANUFACTURE OF BLANKS SUCH AS ARE USED IN THE MANUFACTURE OF FORKS,

SPOONS, HANDLES, AND SIMILAR ARTICLES.

To all whom it may concern Be it known that I, ARTHUR \VILZIN, of 100 Boulevard Victor Hugo, St.-Ouen, Seine, Republic of France, engineer, have invented improvements in the manufacture of blanks such as are used in the manufacture of forks, spoons, handles, and similar articles, of which the following is a full, clear, and exact description.

The object of my present invention is to obviate entirely or nearly so, the punching and trimming scrap which amounts to from 25 to in the manufacture of flatware blanks according to the processes practised hitherto.

According to my present invention, I first form in any suitable manner (as by punching from sheet metal or cutting off from bars or s rips) preliminary pieces of uni form thickness and preferably each of a weight which is substantially equal to that of one of the finished graded blanks; such preliminary piece is then confined between organs pressing unyieldingly against its flat sides so as to prevent its thickness from increasing, and while so held the preliminary I piece is subjected to edgewise pressure. The

edge-pressing tools are adapted to so alter the length and outline of the preliminary piece as to permit of obtaining, with little or no trimming, from'the intermediate blank thus produced, the finished graded blank of the desired contour, by crushing out sidewise or lengthwise between suitably shaped pressure organs.

The accompanying drawings illustrate the application of my invention to blanks of the form most frequently required in flatware manufacture.

Figure 1 illustrates in full lines an intermediate blank formed in making forks ac cording to my invention, and in dotted lines the preliminary piece from which such blank is produced; Fig. 2 is a central longitudinal section of such blank; Fig. 3 is a face view of the graded blank obtained from the intermediate blank shown in Figs. 1 and 2; Fig. 4 is a central longitudinal section of said graded blank; Fig. 5 illustrates an other way of making preliminary pieces for the purpose of my invention; Figs. 6 and 7 are sectional views showing how the preliminary piece shown in Fig. 5 is transformed by edgewise pressure into an inter- Specification of Letters Patent.

Application filed April 25, 1911.

Patented May 26, 1914. Serial No. 623,292.

mediate blank of the shape shown in Figs. 1 and 2; Fig. 8 is a cross section on line XX of Fig. 6; Fig. 9 is a sectional view showing how edgewise pressure may be employed to produce an intermediate spoon blank from punched preliminary pieces of the shape shown in Fig. 10.

The preliminary piece, as indicated at 0 in Fig. -1, may be a rectangular strip of metal of uniform thickness obtained by cutting from a bar, or in any other suitable way. Obviously, such pieces can be pro-- duced without any scrap. The preliminary piece may be made of other forms, for iristance (in the case of forks), preliminary pieces of the shape shown in Fig. 5 at e, 6 6 ,0 6 may be employed, such pieces being stamped or punched in the well-known interlocking manner from sheet stock of uniform thickness, in which there is no scrap except the end pieces designated in Fig. 5 by e and 6 In any event, the preliminary piece, whatever its shape, should be of a weight substantially equal to that of the finished graded blank (such as the one shown in Figs. 3 and l), and preferably the preliminary pieces should be of a uniform thickness at the time they aresubjected to edgewise pressure in the manner to be set forth presently.

While preliminary pieces of the shape shown in F ig, 5 are not new, they have heretofore been made considerably larger and heavier than those employed by me, since the usual methods involve considerable trimming, in view of which it is customary to make the preliminary pieces from 25% to 55% heavier than the finished graded blank.

The preliminary piece of the character above set forth is placed between lateral pressure or holding organs engaging the flat sides of the preliminary piece so as to confine it unyieldingly and maintain its original thickness, while the edge -shaping punches or organs alter its length and contour. As an example, Figs. 6, 7 and 8 show how a preliminary piece of the shape represented in Fig. 5, is transformed by edge pressure into an intermediate blank of the shape illustrated in Figs. 1 and 2. The lateral pressure or holding organs referred to above are designated by the letters g, g, and the edge shaping punches or organs, as it, it. One of these punches is movable toward the other, in a direction perpendicular to the length of the blank, or both punches may be so movable, to exert the desired edgewise pressure, which lengthens the preliminary piece and at the same time narrows it more or less, according to the shape of the punches or jaws h, h. The thickness of the preliminary piece is however maintained, since the lateral holding organs g, g prevent the metal from spreading sidewise. Fig. 6 shows the original form of the preliminary piece in dotted lines, and in full lines the result of subjecting the bowl or tine portion of said piece to edgewise pressure, producing a blank 6. The opposite or handle end of this blank 6 is then subjected to a similar operation in an apparatus of the same character having jaws or punches if, k of proper shape (Fig. 7) to produce an intermediate blank (Z of the shape also shown in Figs. 1 and 2. Instead of working successively on opposite ends of the preliminary piece, as illustrated in Figs. 6 and 7 I may produce the same result in one operation, by employing punches or jaws of suitable form.

The rectangular piece 0 of Fig. 1 is converted into an intermediate blank (Z of the character shown in Figs. 1, 2 and 7, by means of the apparatus shown in Figs. 6, 7 and 8, or an apparatus working on the same principle of exerting edgewise pressure on the preliminary piece while confining or holding it against lateral or thickening expansion. Without unyielding lateral confining organs it would be difiicult and practically impossible to control the lengthening of the pieces and the alteration of their cross section areas in a manner sufficiently uniform and reliable for the purpose of my invention which calls for very accurate and uniform distribution of the metal in order to obtain the full measure of its advantages.

It will be understood that the size and shape of the preliminary pieces, of the in-. termediate blanks, and of the edge-pressing jaws or organs will vary according to the size and nature of the article to be produced. In some cases, as in making spoons from punched preliminary pieces such as shown at f, f F, f in Fig. 10, it may be desirable to have the edge-shaping action, instead of entirely at right angles to the longitudinal axis of the blank, in part parallel to this axis, so as to properly enlarge the bowl end and suitably shorten the blank. For this purpose I may employ the apparatus shown in Fig. 9, which comprises transversely movable punches or jaws 7?, 7L5 and a longitudinally movable jaw or punch h, exerting pressure on the blank M in the directions indicated by arrows. Of course, the apparatus also comprises lateral pressure or holding organs of the same character and function as those shown at g, g in Fig. 8.

If desired, by making the lateral pressure or holding organs with hollows or recesses, as indicated for one of them at g in Fig. 8, I may effect accumulations of metal at predetermined points of the blanks so as to facilitate the subsequent stamping of high relief ornaments. In this case, the accumulation is produced in a very simple and economical manner, without adding any step to the operation, since the edge pressure tends to fill the hollow or recess 9 before causing an axial movement of the metal. It will further be understood that my process of contour shaping by edge pressure under lateral limitation may be applied to several ieces or blanks at a time, and also to blanks intended for other articles than forks and spoons.

The profiled intermediate blanks produced according to my invention. as described above, are then converted into finished articles by pressure between suitably graded tools. For instance, the intermediate blank (Z of Figs. 1, 2 and 7 may be crushed out sidewise between graded tools of well-known character to produce the finished graded blank d shown in Figs. 3 and 4:. The profiled intermediate blank (Z is of practically the same weight as the graded blank d, and of substantially the same length, but narrower in surface, said profiled intermediate blank presenting at different points of its length cross sections substantially equal in area to the cross sections at corresponding points of the graded blank 0? as required for the final design stamping.

I claim:

The process of obtaining intermediate blanks for flatware manufacturing, which consists in taking a preliminary blank of a weight equal to that of the final graded blank, then introducing this preliminary blank between two confining blocks adapted to be held rigidly at a distance from each other which corresponds to the thickness of said preliminary blank, then while the blank is thus rigidly confined on its fiat sides, exerting over substantially its entire length an edgewise profiling pressure adapted to lengthen the preliminary blank and to alter its contour.

The foregoing specification of my improvements in the manufacture of blanks such as are used in the manufacture of forks, spoons, handles and similar articles signed by me this 13th day of April, 1911.

ARTHUR WILZIN.

Witnesses:

DEAN B. MASON, B. Tnnuor,

Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents, Washington, D. 0.

Images