US1520289A - Manufacturing process of applique plots for metal dials, backs or covers of cases, and the like - Google Patents

Description

Dec, 23, 1924. 1,520,289

B. FLUCKIGER MANUFACTURING PROCESS OF APPLIQUE PLOTS FOR METAL DIALS,

BACKS 03 COVERS OF CASES, AND THE LIKE Filed 001:. 28, 1922 587 aha 7264 @FFECE.

BEE/TEA FLUQKIGER, 0 ET. Ill/HEB, SWZTZERLAND.

IVIANUFACTUBL'NG PROCESS G3? PLOTS FOR METAL DIALS, BACKS O'R COVERS 01? CASES, AND THE LIKE.

Application filed Gctober 28, 1922. Serial No. 597,646.

To all 207mm may con-corn:

Be it known that l, Bnn'ri-m Fiincnisnn, manufacturer, citizen of C 'ation of Switzerland, residing at Saint-ll r. llerne, Switzerland, have invented certain new and usefnl Improvements in l mifacturing Processes of Applique Plots for Metal Dials, Backs or Covers of Cases, and the like, of which the following is a specification My invention relates to a manufacturing process for so-called applique plots which are to be lined in the shape of figures or ornaments on metal dials or parts of watch cases and the like.

Such plots preferably made of sheet gold or other ductile metals are manufactured independently of said parts of watches and are to be fixed by means of prongs provided on their back side. It therefore very important to arrange said prongs in such predetermined position in relation to the contours of said plots that these latter become interchangeable and may be fitted wherever it pleases.

l he accompanying drawing represents in Fig. l a plan view of a metal strip whereof said plots are to be manufactured and in Fig. :2 a cross-section according to line H ll in Fig. 1.

In carrying out my process the metal strip is subjected to a first operation imparting to saidv strip at uniforn'ily spaced intervals an intermittent linear forward movement produced by any suitable mechanism, not shown. Each movement submits a new part of the strip to the dies of a press not shown, which are adapted to form an impression cl furnishing the required metal for e truding, all on the back side of the strip, a pair of prongs 0 which are located at a predetermined position relatively to the contour of the plot which is to be formed and to be cut out. fiiimultaneously with said prongs obtained by means of an extruding operation at least two holes i") are punched out which holes are used as guiding marks in the press for a second operi tion whereby another set of dies forms and punches out the plot so as to have the prongs integral therewith extending from its backside.

In this second operation the holes will serve as guides of the strip for securing a predetermined relative position of prongs and contour of plot, such. as is shown in Fig. 1 in dotted lines for plot shaped like the figure 7. In the particular case shown the dies either of the first or of the second operation will. also punch out triangular holes which would facilitate the severing of the strip into single plots.

li ith regard to the guiding marks I dont limit myself to two holes 7) as guiding marks. The same effect would also be ob tained, for instance with ornan'ie'nts of suitably shaped contours, by using at least parts of this contour as guiding mark for the second operation.

I am well aware that processes have been known heretofore where plates or washers were formed with prongs integral therewith. But the prongs were formed on the plates or washers either by heating or by a bending operation where the metal partly cut out from a hole was bent back so as to constitute prongs. Further on centrally punched holes were used as guiding mark for a second operation of dies. But this arrangement would not answer our purpose where the guiding marks have to secure the same relative position between prongs and contour of the plot even after the severing of the strip into single plots when the latter be presented to the second dies.

1 disclaim all such processes but what I claim as new and want to secure by Letters Patent is 1. A manufacturing process of so-called applique plots which are to be fixed either figures or as ornaments on metal dials or parts of watch-cases and the like, said process consisting in subjecting by a first operation a strip of sheet metal in a cold state to the dies of a press adapted to extrude a pair of prongs from the back side of said strip by means of an impression made furnishing the corresponding metal for forming said prongs and simultaneously therewith to punch out at least two holes as guiding marks for a second operation which will punch out the contours of the plot integral with the prongs, these later being located in a predetermined position relatively to the said contour all as described and for the purpose set forth.

2. A manufacturing process of so-called applique plots as claimed in claim 1 wherein at least parts of the contour of the plots are employed as guiding marks in the second operation of the process.

3. A process of manufacturing applique lOO plots for metal dials, backs 01' covers of cases and the like, consisting in subjecting a strip of sheet metal at spaced intervals to pressures to form pairs of upright integral feet on the strip, and subsequently cutting the appliqu plot With the feet from the strip.

4. The process of manufacturing applique plots for metal dials, backs or covers of cases and the like, consisting in stamping holes at uniformly spaced 1ntervals from the metal strip and simultaneously exerting pressures on the strip to form spaced pairs of upright integral feet, also cutting the of the strip into separate pieces each containing a pair of feet and finally cutting the applique plot with the feet from each plece. V

5. A process of manufacturing applique plots for metal dials, backs or coversof cases and the like, consisting in pressing a strip of material to form spaced integral feet then cutting the strips into sections each containing a pair of feet, and finally cutting the applique plot With the feet from the sections.

In testimony whereof I hereunto affix my signature.

BERTHA FLUCKIGER.

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