Abstract: A method for producing a partly transparent body with a color gradient, include: providing a transparent first casing having a first joint surface on a protrusion and including an encased object; providing a second casing which is not completely transparent and which has a second joint surface in a recess. The shape of the protrusion and the shape of the recess correspond to each other; and combining the first casing and the second casing by inserting the protrusion into the recess and melting the first joint surface of the first casing with the second joint surface of the second casing. A pressure force and a temperature are applied to the first joint surface and the second joint surface such that the first joint surface of the first casing transitions into the second joint surface of the second casing in a visually seamless manner, followed by a removal of material.

Abstract: A digital day/night display device includes an hour disc provided with ciphers 1-12 representing the hours, and made such that light can pass either through the ciphers or through parts of the hours disc surrounding these ciphers; a rotative day/night disc located under the hours disc including a first zone and a second zone of different colors or shadings; and a mechanism for driving in rotation the hours disc and the day/night disc. The zones extend under the ciphers of the hours disc. Also provided are elements for driving the hours disc in a continuous way and at a constant speed at the rate of two revolutions in twenty-four hours and other elements for driving in a continuous way but intermittently the day/night disc at a rate of one revolution in twenty-four hours. A time piece provided with this digital day/night display device is also described.

Abstract: A writing implement may include a housing with an operating side and a writing side, a nib assembly longitudinally axially displaceably arranged in the housing with an ink reservoir and a piston longitudinally axially adjustably arranged therein, and an operating element, arranged on the operating side, which is rotatable and longitudinally axially displaceable into a first operating position and a second operating position. The operating element is mechanically connected to the nib assembly in the first operating position for the longitudinal axial displacement of the nib assembly and mechanically connected to the piston in the second operating position for the longitudinal axial adjustment of the piston.

Abstract: A digital day/night display device includes an hour disc provided with ciphers 1-12 representing the hours, and made such that light can pass either through the ciphers or through parts of the hours disc surrounding these ciphers; a rotative day/night disc located under the hours disc including a first zone and a second zone of different colors or shadings; and a mechanism for driving in rotation the hours disc and the day/night disc. The zones extend under the ciphers of the hours disc. Also provided are elements for driving the hours disc in a continuous way and at a constant speed at the rate of two revolutions in twenty-four hours and other elements for driving in a continuous way but intermittently the day/night disc at a rate of one revolution in twenty-four hours. A time piece provided with this digital day/night display device is also described.