Abstract: A monocular telescope in which the beam path is so laid out that the casing may be flat in the direction of view, and the optical axis of the beam path in the casing describes a somewhat rectangular route, and in which the telescope has a view finder beam path intesecting with the telescope beam path in the users eye.

Abstract: A keyboard which has support frame, or several rows of key units. Each key is movable out of an initial inoperative position by the tip of the index finger. The key of each key unit of a guide key row has a key rod and a top face on one end of the key rod. The tip of a finger rests at random pressure on each top face as, at the opposite end of the key rod, a non-depressable mounting is articulatedly lodged in the support frame and prevents downward depression of the key while permitting tilting toward one or more operational positions.Each key unit of the guide key row has a magnetic pole to exercise a determined initial attraction on the top face-bearing end of the key rod an doppose tilting movement of the key away from the attracting means, when this movement is initiated by a finger tip.

Abstract: A magnifying optical system is described which is usable at a determined posture of the head of a user, when at least one of the user's eyes is directed onto an object's field to be magnified, which system comprises an objective, an ocular comprising an eye lens and at least one field lens, and a deflecting system interposed between the objective and the ocular, the optical system being located, at the determined head posture, outside the straight path of rays for free sight between the user's eye and the object's field looked at by the eye; the optical axis of the objective is directed toward the center of the object's field, the optical axis of the eye lens of the ocular is directed toward the center of the user's eye ball, both said optical axes forming an obtuse angle with one another, which optical axis of the objective and the central ray of free sight intersect one another under a flat acute angle at the center of the object's field (whereby the object's field can alternatingly been seen by the user ei

Abstract: A keyboard, actuatable with the aid of fingers of at least one hand is described which keyboard includes a support frame, a normal row of keys therein, each of which can be moved out of an initial position of the fingers by the tips of the index finger, middle finger, ring finger and little finger, respectively, which keyboard has a hand rest for the ball of the thumb or wrist of the hand, the fingers of which are operative, on which hand rest this hand can be continuously supported in a rest position during actuation of the keyboard, and wherein the keys of the normal row are arranged on a curve for the fingers of each hand, which curve corresponds to the natural disposition of the finger-tips when the fingers are, without being tensioned, in a slightly curved, spread, but unstretched position. Each key has an unactuated rest position in which the tip of the finger associated therewith is able to rest thereon.

Abstract: A child-proof screw-cap closure is described which can be screwed onto a bottle or the like container and comprises an inner cap, an outer cap, a coupling member and a sealing member, which inner cap possesses an inner chamber and a cavity, connected with one another by a passage and a channel with a window between the cavity and the chamber, and which outer cap possesses a projecting zone with at least one niche, which zone projects so far into the interior of the outer cap that, in the non-actuating position, it at least partially covers the window of the channel and prevents passage of the coupling member through the channel, whilst when the outer cap is rotated so that the niche faces the window, the coupling member can pass from the cavity into the window and project into the niche, as a result of which a positive engagement is made between the inner and outer cap and both caps can be unscrewed from the mouth of the container.

Abstract: Fine-tuning peg for a stringed instrument having a holder for holding the peg firmly in a peg box of the instrument. The peg has a head which is partly hollow, a tuning wheel in the interior of the peg head, a neck part, a rotatable tuning shaft is supported in the neck part and the rotatable tuning shaft is connected to the tuning wheel. A pre-tuner is associated with the free end of the tuning shaft and a string drum is seated on the tuning shaft. A device for compensating the pull of the string is connected to the tuning shaft and a disengageable locking mechanism is adapted for securing the string against turning.

Abstract: A lever-actuated closure for bottles or the like containers is described which closure comprises a closing member sealingly mountable on an outlet orifice of the container, an actuating member having a manually operated gripper part and being hingedly mounted below the outlet orifice, and a connecting member hingedly attached to the actuating member and to the closing member at the outside thereof, which closure can be transferred, by means of the actuating member, from an open position, in which the closing member frees the outlet orifice, through elastic deformation of at least one of the parts of the closure via a dead-center position, in which the hinge axis of the actuating member and the two hinge axes of the connecting member are in a common plane, into a closed position, in which the closing member seals the outlet orifice, or vice versa from this closed position into the open position, the gripper part of the actuating member being, in the closed position, above the elastically deformed closing membe

Abstract: This invention relates to a closure which serves hermetically to close -- though being easily reopened -- a bottle or similar container, which possesses a neck having a dispensing orifice, a neck frontal face surrounding said orifice and an orifice bead located below the latter and having a constriction on its underside, and which closure comprises a cap serving as the head of the closure, with an upper cap wall ( or roof wall of the cap ) and a cap side wall circumferential about the latter and possessing slot means, extending from its lower rim and transversely to the latter, to permit it to splay ( or spread ) on being mounted on the mouth of the bottle, and with an inner annular bead, projecting inwards from the inner face of the cap side wall and intended, in the closing position, to engage with the underside of the orifice bead of the bottle, a sealing element, provided on the inner face of the upper cap wall and serving, in the closing position, to seal the dispensing orifice of the bottle, a lifting e

Abstract: This invention relates to a closure which serves hermetically to close - though being easily reopened - a bottle or similar container, which possesses a neck having a dispensing orifice, a neck frontal face surrounding said orifice and an orifice bead located below the latter and having a constriction on its underside, and which closure comprises a cap serving as the head of the closure, with an upper cap wall (or roof wall of the cap) and a cap side wall circumferential about the latter and possessing slot means, extending from its lower rim and transversely to the latter, to permit it to splay (or spread) on being mounted on the mouth of the bottle, and with an inner annular head, projecting inwards from the inner face of the cap side wall and intended, in the closing position, to engage with the underside of the orifice head of the bottle, a sealing element, provided on the inner face of the upper cap wall and serving, in the closing position, to seal the dispensing orifice of the bottle, a lifting element