Abstract: Threads of hair are embroidered in loops on a flat, flexible base, for example, a textile base, in an area bounded by a desired wig contour. Individual threads or tufted multiple threads are embroidered in loops. Thereafter, the embroidered area is removed from the base along with the wig contour by cutting or punching. The flexible wig is glued onto a doll's head, cut to length and combed.

Abstract: A connection device for toy construction sets comprises a cylindrical socket and a bolt-like locking element inserted therein. The socket is inserted into the bores of the construction elements to be connected and is provided at one end with a radially protruding outer edge shoulder as a retaining member as well as longitudinal slots. The locking element (9) is rotatable within the socket, but fixed axially and rotation of the locking element causes the socket to lock within the construction element.

Abstract: A rod is provided with a plurality of bores disposed in a row. In the area of the two end bores the rod has only half the thickness and parallel plane faces. Coaxial to the end bores an annular groove is formed on one face. A toothed rim with radial teeth extends axially on the base of the annular groove. Two such rods may be connected by the teeth of the on tooth rim interdigitating between teeth of the other tooth rim with the rods at a desired angle with each other.

Abstract: A toy construction set connection device consists of a shaft and a shaft bushing. The bushing consists of two bushing parts which are fixedly mountable on the shaft. By means of an axial or rotational displacement of the second bushing part relative to the first bushing part, the whole shaft bushing can be anchored in a desired transverse groove on shaft. The anchoring may be released by pulling the second bushing part from the first part.

Abstract: A switch point for a toy cog railway which has smooth tracks with a centrally disposed gear rod comprising a shifting device with a curved and a straight gear rod piece for the given driving direction. The shifting device which supports these gear rod pieces is laterally displaceable with respect to the track direction. Each obtusely travelled end segment of the switch point is provided with a tongue-like actuating element displaceably disposed in a longitudinal slot of the solid gear rod of the corresponding end segment having an upwardly extending nose. In the outermost position of the actuating element the nose protrudes beyond the gear rod and in the inner position thereof it is lowered to the level of the gear rod. Each actuating element is coupled to a rotating mounted disk by way of pivoted levers, which in turn are coupled with the shifting device. A vehicle which travels on the switch point actuates the nose, if the same protrudes.

Abstract: For simulating hydromechanical actuation of components in a toy model such as a toy excavator having legs and a shovel, means for exclusively mechanical power transmission are provided. These means include actuating units comprising each a cylinder casing and a piston rod slidably arranged therein and displaceable by a threaded spindle in engagement with the piston rod. Rotary motion is transmitted to the threaded spindle by a flexible shaft having plug-in connectors at both ends secured to a core and a protective hose of the flexible shaft. Each flexible shaft is connected with a driving unit installed in the toy model and releasably connected with a rotary power source such as handwheel or an electric motor.

Abstract: In a square array with a modulus (M), the plug-in building blocks of the building set have protruding connecting pins (1) and corresponding mating connecting sockets. In order that bendproof trusses can also be built, the building set has single-row connecting bars (34) with two terminal pins (35), whose spacing from one another amounts to .sqroot.2 times an integral multiple of the modulus (M), and girder elements (10), which at two bordering sides faces (13, 14) each have a single row of pins with modular spacing and parallel to these side faces each have a projection (19) set back by the thickness of the connecting bar (34). In this way, stable, aesthetically appealing trussings can be built with the building set.

Abstract: A building block is provided comprising a support part, two zig-zag shaped conductive tapes connecting a series of coupling pins with conductive surfaces positioned on the support part, and a cover plate. The coupling pins which extend through openings in the cover plate define two separate electrical circuits with the coupling pins arranged in two rows and the pins of one row being displaced by one pin with respect to the pins of the other row. A prong extends from each of the coupling pins to the inner sidewall of the support part. The building block may be connected to another similar building block with the electrical circuits separated in a short-circuit proof fashion.

Abstract: A toy cog wheel railway is provided having a track with smooth driving faces and a center cogging member with two opposed vertically extending racks thereon. The associated train has an engine with a driven chassis and further cars with undriven running chassis. The chassis contain wheels with smooth faces to run on the driving faces of the track. The undersides of the chassis are provided with opposed guide members that contact the opposed sides of the cogging member. The driven chassis is provided with a motor whose drive axis is vertical with respect to the driving faces of the track and is offset with respect to the center line between the guide members so that a cogwheel attached to the drive axle engages only one of the racks.

Abstract: A track system for toy vehicles contains straight and curved track pieces at the end of which are reference points that coincide with symmetry points of a track grid having a track module, M, which is a multiple of a building module, m, of a base plate for mounting the track pieces. The length of the straight track pieces which are disposed either parallel to or diagonally with respect to the track grid are a multiple of or .sqroot.2 times a multiple of the track module, M. The curved track pieces are composed of a longer arcuate segment and a shorter straight segment. The center of the arcuate segment is deplaced with respect to the center of an arc, whose center is a symmetry point of the track grid and whose two radii define an angular range of the curved track piece. The center of the arcuate segment is defined by the intersection of an angle bisector of the tangents (T) of the reference points on the ends of the curved track piece and one of the two radii.

Abstract: A building block having side walls and a front face perpendicular to these is provided with two rows of coupling pins on one side of the front face and counter-coupling tubes on the other side for mechanically coupling two building blocks by means of a clamping action. In each row, each second coupling pin has an electrically conducting surface, while the coupling pins lying between these are electrically insulating. One row of conducting pins is displaced in the direction of the rows by one coupling pin from the adjacent row. On the other side of the front wall a contact bar is arranged which is connected electrically with the conducting coupling pins of an associated row. The bar has a contact area for producing electrical contact with a row of conducting coupling pins of an adjacent, coupled building block.

Abstract: A building block is provided having side walls and a top face with two rows of coupling pins on the one side of the top face and counter-coupling tubes on the other side for mechanically coupling two such building blocks by means of a clamping action. On their side faces, the coupling pins have electrically conducting regions, which extend over an angular range. The angular range of one row being turned by 180.degree. relative to those of the other row. All the conducting regions are connected to a contact bar, which is arranged on the side of the counter-coupling tubes along one side wall. When two building blocks are coupled arbitrarily, at least one conducting region of each row of coupling pins of the one building block makes contact with a contact bar of the other building block in such a way, that a short circuit cannot occur in the two electrical circuits assigned to each row of coupling pins or each contact bar.

Abstract: A process and plant for hydromechanical recovery of a fluid spread in a thin layer on the surface of a liquid in which predetermined portions of the liquid and superimposed fluid are successively partitioned off, enclosed in a cell of variable cross section and each portion is progressively restricted in volume by reducing the cross-sectional area of the cell to increase the thickness of the layer of contaminant fluid which is then removed.