Abstract: There is disclosed a hinge bracket and mounting plate assembly wherein one of the parts consisting of the hinge bracket and the mounting plate is provided with a spring-biased pivoted detent lever and the other of the parts is provided with an abutment, which interengages with the detent lever, and wherein the lever and abutment snap into a position in which they are releasably interengaged after the hinge bracket has been inserted into a track of the mounting plate and has been longitudinally displaced therein. A stop is provided, which limits the displacement as the lever and abutment snap into position or after they have snapped into position. One of the members consisting of the lever and the abutment has a beveled or rounded engaging face, the other of the members has a backing edge or backing face, and the engaging face and the backing edge or face bear on each other at an angle of attack which is smaller than the angle of friction.

Abstract: A connecting fitting for releasably connecting two platelike furniture members, which preferably extend at right angles to each other, comprises two fitting elements which are adapted to be secured to respective ones of the furniture members to be connected. One of said fitting elements has locking projection and is adapted to be slidably inserted into a receiving opening of the other fitting element until the fitting elements and/or furniture members engage each other. The other fitting element is provided with a hook-shaped rotary wedge for interengaging with the projection so as to lock the fitting elements to each other. The rotary wedge is rotatably mounted in a wedge housing and is biased in a locking sense by a torsion spring. Unlocking means are provided to rotate the rotary wedge in a retracting sense as well as resilient means for locking the rotary wedge in its retracted position.

Abstract: A connecting fitting for releasably connecting two platelike furniture members, which extend preferably at right angles to each other comprises two fitting elements adapted to be secured to respective furniture members to be connected. One of said fitting elements is pin-shaped and provided with an enlarged head and adapted to be slidably inserted into an aperture or recess of the other fitting element until the fitting elements and/or furniture members engage each other. The other fitting element is provided with a spring-loaded locking member, which comprises a forked portion for straddling the first-mentioned fitting element below its head in order to lock the fitting members to each other.

Abstract: A concealed hinge assembly for use with doors, hinged plates or the like comprises a mounting plate and a projecting base member connected to the mounting plate. A hinge bracket is screw-connected to said base member adjacent to one end of said hinge bracket and at its other end is so connected to one side of a pot-shaped member that the one end of the hinge bracket enters the pot-shaped member during the closing movement. A slider which is biased by two parallel coiled compression springs is guided in the pot-shaped member in a radial plane and carries a cam, which during the closing movement cooperates with a projection or the like carried by the hinge bracket.

Abstract: A connecting fixture is provided for detachably connecting two platelike furniture parts, which abut preferably at right angles to each other. The connecting fixture comprises two fixture elements, which are adapted to be secured to one of the furniture parts to be connected and one of which comprises a detent lever, which is mounted to be pivotally movable against the force of a spring and at its forward end carries a hook-shaped detent projection, which when the detent lever has been pushed into an opening of the other fixture element snaps with its rear side face behind a step or bar of the other fixture element, which step or bar has a supporting edge. The radial distance from said side face to the pivotal axis of the detent lever continuously decreases toward the root of said side face and the side face when snapped in lies on the supporting edge above the root of the side face.

Abstract: The mounting plate has a track for slidably guiding the hinge bracket in an axial direction and a bore for longitudinally slidably guiding a spring-loaded detent pin, which protrudes from the bore and is held captive therein by at least one stop in the surface defining the bore. The hinge bracket has a sloping surface, which is arranged to force the detent pin into the bore as the hinge bracket is slidably moved onto the mounting plate. The hinge bracket also has a surface which as the hinge bracket is pushed over the detent pin holds the latter in a depressed position until the detent pin snaps into a detent opening of the hinge bracket so that the latter is releasably fixed. A locking mechanism of the type used in retractable ball point pens is provided and is adapted to lock the detent pin in two different (partly extended and fully extended) positions. The pin is adapted to be moved from one of said positions to the other in that the detent pin is depressed into the bore and then released.

Abstract: Two relatively swingable members interconnected by a pair of hinge straps are biased into either of two predetermined relative positions, 90.degree. apart, by a hairpin-type leaf spring bearing upon a projection of one hinge strap while being wound about a pintle engaged by the other hinge strap. The leaf spring consists of at least two nested plies of sheet steel, which may or may not be interconnected at one end, each having a thickness which is less than that of a single-ply spring of like material having the same degree of elasticity. The innermost ply is supported by a bushing of plastic material surrounding the associated pintle.