Abstract: The extension column (3) which is telescopically adjustable inside a vertical tube (2) and is optionally rotatable relative to the vertical tube (2) is supported on the latter by a radial and axial pivot bearing arrangement (11, 14) and a height-fixing device comprising a housing (16) and a coupling element (15) preferably in the form of a slide (15) which is supported on a bearing ring (14) which in turn sits on the bearing surface (13) of a support flange (11) supported by the vertical tube (2). The height-fixing slide (15) is mounted in a slide housing (16), which surrounds the bearing ring (14) and the support flange (11), and is against the restoring force of a return spring (27) transferable from a coupled position on the extension column (3) into a release position in which the extension column (3) is freely movable vertically.

Abstract: The work chair is provided with a one-piece chair shell (8), in the rear region of which an integrally incorporated hinge portion (11) is formed between the lumbar region and buttocks portion (12) and the backrest portion (11). The seat shell (13) contains a base bearer (14) which forms part of an adjusting mechanism and on which the chair shell (8) is suspended for longitudinal movement by means of spring-loaded pivoting members (27, 32). The base bearer (14) and the backrest portion (10) are connected together with the aid of a control member (36) fastened by guide means (37, 38), in such a manner that a variation of the inclination of the backrest portion (10) caused by an adjusting force brings about a simultaneous variation of the inclination of the seat shell (13) in the same direction. Through the elimination of the adjusting force, the backrest portion is returned to its normal position or position of rest.

Abstract: A support part (1) of the clothes display rack is provided with a securing device (2) for a height-adjustable carrier-rod (3) for placard-holding means (4). The securing device (2) contains a plug part (6), which is inserted, with a tight fit, in the support part (1) and has a central bore (5) for the carrier-rod (3). Although this rod is securely held, by a clamping action, in a clamping zone (6', 6") which is integrally connected to the plug part (6), it can nevertheless be shifted into virtually any desired axial position by applying a reasonable shifting force.

Abstract: The work chair is provided with a backrest support (13) which is connected movably to the seat shell (4) or respectively to a base plate (10) stiffening the latter, for the purpose of individual adjustment of inclination, and is flexible in terms of bending along its vertical extension and the contour curve of which, under load, essentially approximates to the curve of the human spinal column. The inclination of the backrest can be fixed by means of a locking arrangement (14) which consists essentially of a pawl (16) which is spring-loaded (20) and of an engagement toothing (17) provided at the lower end of the backrest support (13).

Abstract: The security clothes-stand contains a number of holding rods (4) which are retained in a supporting device (3') and on the top end of which can be mounted a clothes-hanger (7) for receiving an article of clothing to be presented. The holding rods (4) essentially consist of a base tube (10) which is connected rigidly to the supporting device (3') and on which a casing tube (11) is rotatably mounted. The casing tube (11) carries at its top end a lock attachment (14) which contains a snap-in catch (15) designed for the releasable retention of the clothes-hanger (7). A holding member (7,5) of the clothes-hanger (7) can be inserted into a receiving orifice in the snap-in catch (15) and can be removed from the lock attachment (14) only after the catch (15) in the latter has been released.

Abstract: Holding rods (4) are mounted to swing on a supporting device (1 to 3), the upper end portion (4.1) of which rods is inclined upwards at an angle .alpha. between 10.degree. and 30.degree. to the horizontal. On each of these upper end portions (4.1) there can be put a coat hanger (5), which is intended to receive a garment to be displayed. For this purpose the coat hanger (5) is provided with a reception opening (9), which is formed along one of the two carrier arms (5.1), in its interior. The end portion (4.1) is provided with a circumferential latching groove (42), in which the bolt (46) of a locking device (10) is intended to engage, when the coat hanger (5) has been fully pushed onto the holding rod (4) up to an end abutment (49). The coat hanger (5), together with the garment on it, can only be removed from the holding rod (4) after unbolting of the locking device (10) has been effected.

Abstract: Cross-beams, located between column elements of the support frame, contain, at their beam-ends, clamping members which are mounted inside a cavity in the cross-beam body in a manner permitting displacement in the longitudinal direction of the cross-beam, and are capable of being brought into, and out of, engagement with the column elements. These clamping members are expanding elements, coupled together and guided so that they move in pairs, their head part, which engages into the column element, being provided with clamping means and centering means, and being capable of being pushed completely back into the cross-beam cavity. The expanding elements can be forced apart from each other, in a parallel relationship, perpendicularly to the longitudinal axis of the cross-beam, by means of a socket-head screw which can be operated from the outside of the cross-beam.

Abstract: Each of the carrying arms (4) of the clothes stand carries on its top side a covering (5, 13) which is connected in a slip-proof manner to the carrying core profile of the carrying arm. This covering is provided over some of its top side with a comb-like bearing portion (14) with a number of comb teeth (15) and with grooves (17) which lie between the teeth (15) and which are oblique to the longitudinal axis (16) of the supporting arm (4).

Abstract: A pillar comprises a profiled metal core with a plurality of radial arms distributed over the circumference, the arms being provided with longitudinally extending slots limited by lateral wall members, the slots being adapted for the insertion of portions of supports and/or wall elements. A plurality of filling members, which may have a decorative finish, are inserted and fitted by means of groove and rib connections in sector-shaped spaces between adjacent wall members.

Abstract: The ergonomic chair comprises at the upper end of the chair column, a supporting arm on which the front end of the seat supporting frame is articulated for pivoting vertically. At the rear end of the seat supporting frame, a back rest is connected to the seat supporting frame and the supporting arm by means of a movement guiding and return mechanism so that an alteration in the inclination of the back rest automatically causes a proportional alteration in the inclination of the seat supporting frame. The movement guiding and return mechanism is divided into two structural units which are separate in construction. The one is a linkage mechanism which is effective between a back-rest connection construction, the seat supporting frame and the supporting arm, with a movement lock which is effective when the chair is in the position of rest.

Abstract: A lockable gas cylinder in parallel with a mechanical spring controls the adjustment of tilt in a chair seat and back. A linkage mechanism permits tilting of the chair seat about a pivot located close to the forward edge of the seat and permits tilting of the back about a pivot which is located near the rear edge of the seat. The gas cylinder may be released to permit rocking of the chair against the force of the mechanical spring alone.