DE7410520U - CASTING FORM FOR THE MANUFACTURING OF ONE-PIECE WATCH CASES - Google Patents

Description

Marcel CURTIL, BESANgON / France

Casting mold for the production of one-piece watch cases.

The innovation concerns a casting mold for the production of one-piece watch cases, in which the upper middle section is made of glass Designed differently for each model, but the lower middle section glass tires and bases are designed the same for all models.

In such a production of one-piece watch cases, it is known to use a special casting mold for each housing shape that one wishes to obtain. For cases of the same caliber, which are produced by casting because of the low production costs, it is common practice that the lower part of the central part bezel and the bottom have the same shape, while only the upper part of the middle part glass rcjifs is designed differently to match such clocks widely spread to give a different look * each The model must therefore be made using a different form, the value and cost of which are relatively high,

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To avoid this disadvantage, a mold is the one above described type according to the innovation characterized by a single Lower part of the mold for shaping the bottom of the case, including the lower central part of the bezel and several interchangeable upper parts of the mold, which are provided with differently designed shaped surfaces for the different design of the upper middle section glass hoops are.

The contact surfaces, with which the two molded parts lie against one another, can are concave, convex or angled with flat or sloping edges.

The main advantage of such a two-part design of the casting mold consists primarily in the considerable reduction in the Manufacturing costs for different shapes all the same Have lower part.

Another advantage is the numerous design options of watch cases, the upper part of which has different shapes and, for example, also arranged eccentrically to the lower part can be without each needing a special mold for this.

In the accompanying drawing, for example, are possible embodiments a mold according to the innovation shown in sections, where show:

Fig. 1 shows the complete two-part form and

Fig, 2 to 4 versions of the upper mold part.

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Thereafter, the mold according to the innovation consists of a single, unchangeable lower mold part 1, which covers the bottom 4 of the watch case up to the level of connection level 3 between the two Molded parts, and from an upper mold part 2, which determines the external design and the appearance of the middle part glass hoop 5. This The upper part of the mold forms the various supports 6 and 7 on the central part of the bezel 5, which are used to hold the clockwork and the Watch glass are necessary.

Figures 2 to 4 show three modifications of the upper mold part 2, The shaped surfaces for the upper side of the central part glass bezel are designed differently by being concave and convex and once designed to be inclined in a straight line.

7410520 03/25/76

Claims (1)

HAT REQUIREMENTS 1, casting mold for the production of one-piece watch cases, in which the upper middle section glass hoops differ from model to model are designed, the lower middle section glass hoops and floors in all Models, however, have the same shape, characterized by a single lower mold part (l) for shaping the housing base (4) including the lower middle part glass ripe and thanks to several interchangeable upper mold parts (2), which can be used for different designs of the Upper middle section glass hoop (5) with differently designed shaped areas are provided, 2, casting mold according to claim 1, characterized by concave, convex or surfaces formed angled with flat or inclined edges between the two molded parts (1, 2). 74'mhvn 7R.03.76