Abstract: In the 6h-12h axis of the watchcase (1), two vertical bores (9) are made in the middle (2) of the watchcase. Inserted in these bores is one metal cylinder (10) each with a horizontal bore (12) and a vertical bore (14). Screwed into the horizontal bore (12), which has been provided with a threading (11), is a screw (23), which fastens the band connection (21) to the side (33) of the middle (2). Screwed into the vertical bore (14), which has been provided with an internal threading (13), is a screw (18) which fastens the back cover (3) of the watchcase to the middle (2). In the side (33) at 6h and 12h one horizontal or vertical ground area (22) each is foreseen in which the band connections (21) are somewhat recessed. Achieved through this configuration is that the band connections (21) for fastening the watchband have no play and do not turn.

Abstract: The wording on a label provided on the packaging of a rerecordable recording medium must be able to be altered to suit the contents of new recordings. A separate sheet comprising a plurality of adhesive labels is impractical as the sheet usually cannot be found when the wording on the label needs to be changed. Accordingly, spare labels are arranged in a stack with the labels stuck one on top of the other, each label comprising a tab for peeling it off the stack once the wording on it has become out-of-date. This stack of labels can be stuck directly onto the packaging or be provided as a separate accessory. This labelling method can be adapted for all types of uses, such as the labelling of video cassettes, of cassettes containing a rerecordable magnetic tape or optical disk, of packagings containing floppy disks, or more generally of any packagings the wording on the label of which needs to be altered periodically or according to the contents.

Abstract: At the time of the casing of a watch in the back of which a diaphragm (19) is placed, an insulating and inert transparent liquid is caused to penetrate into the interior of the case by placing the whole in an enclosure under negative pressure. The air is exhausted, and the liquid in question comes to occupy the space included between the module (1) and the walls of the case. A small quantity of air contained under the diaphragm (19) expands under the effect of the negative pressure and causes this diaphragm to swell, which gives a compensating volume allowing thereafter the thermal expansion of the liquid within the case and without subjecting the walls of the latter to stresses.

Abstract: Instead of conventional hands, an hour disc and a minute disc are provided. The hands are represented by markers vaporized upon the undersides of the discs. The discs are pivoted on an arbor anchored in the watch glass. This arbor is hollow, and inserted in the free end thereof is a rivet-shaped retaining part which keeps the discs from slipping off the arbor. Each disc is toothed at its circumference. The teeth of the minute disc engage a gear wheel having a pinion which meshes with the teeth of the hour disc. This wheel and pinion are mounted on an arbor, one end of which is anchored in the watch glass. A retaining ring prevents the wheel from becoming detached from the arbor. This gear wheel likewise engages a pinion of another gear wheel mounted on an arbor. One end of this arbor is also anchored in the watch glass. A pinion of a stepping motor meshes with the teeth of the further gear wheel.

Abstract: In a watchcase body comprising a caseband and a glass, provision is made for fitting a wrist watch movement by means of metal rings. The caseband is of hard material, e.g., synthetic stone or sintered alumina, while the glass is of transparent mineral material, sapphire or mineral glass. The caseband and glass are permanently and rigidly joined without any intervening metal parts. The underside of the glass is metallized along the periphery, then cemented to the annular top surface of the caseband. After cementing, the watchcase body is finished by machining one or more continuous facets on the outer rim of the glass and the outer surface of the caseband.