Abstract: A method is disclosed for the preparation of anhydrous tin-dicarboxylate-dihalide. Anydrous tin-(II)-halide is reacted with an excess amount of acetic acid anhydride at temperatures of about between 20.degree. to 100.degree. C. while passing oxygen through the reaction mixture or adding an oxygen yielding agent such as hydrogen peroxide. The tin-diacetate-dihalide thus formed is separated and is further reacted with aliphatic carboxylic acid having more than 4 carbon atoms or the corresponding acid anhydrides at the temperatures of 80.degree. to 150.degree. C. while the liberated acetic acid anhydride or acetic acid is removed by distillation.

Abstract: A ball cock including a housing of a thermoplastic material. The housing is composed of two parts which are integrally connected to each other. A ball plug is made integrally with a pivot of plastics material. The pivot is mounted in a bore extending transversely of the passage opening of the housing. A seal is provided for sealing the pivot to the outside. The plane of separation of the two housing parts extends transversely of the passage opening and through the axis of rotation of the pivot. The two housing parts have recesses at least in the region of the seal for the pivot. The recesses receive a component which is integrally connected in a tight manner with the housing parts.

Abstract: An assembly consisting of two bevel gear angular drives which are pivotably connected to each other via a pivot bearing, the bearing system including two bevel roller bearings which are tensioned relative to each other between the two sleeves. The shaft carrying the two bevel gears is also supported via bevel roller bearings in the sleeves. In this way it is possible to obtain an assembly which is suitable for implements which transmit high tensile forces to the assembly, without the bearing system and the rotary function of the two drives being adversely affected.

Abstract: The present invention is directed to a circuit arrangement for adjustment of the triggering point of the keys in an inductive keyboard. The keyboard consists essentially of a printed circuit board designed in a matrix-like manner, comprising coils superimposed upon each other, into which a ferrite pin plunges when a key is actuated. By the cooperation of a pulse generator with a current switch which can be influenced through control lines, said cooperation being controllable by a microcomputer, a current pulse is coupled from one coil to another coil and is recognized as a readout signal by a controllable readout amplifier and is conducted further to a central unit. The adjustment of the triggering point of the keys is accomplished by varying the steepness of the driving current pulse, for example, by means of a blocking time duration in the charging of a capacitor determined only once, which durations are stored in a table of values, or it is derived from the fundamental interlinked signals of the keys.

Abstract: In a reciprocating piston press where a compressing piston operates in a nonuniform manner, the piston cooperates with conveyor prongs which move material into the path of the piston. The conveyor prongs are guided by a crank and rocker linkage mechanism by way of elliptical gear wheels for movement around a kidney-shaped orbit. The prongs perform a more rapid motion in the region of a fill opening for charging material into a compaction channel containing the compressing piston. The reciprocating piston press is, in particular, employed for compacting cardboard waste in combination with a feeder space which opens into the compaction channel for charging cardboard waste into the channel. The feeder space and piston press are located in a stationary housing.

Abstract: A model airplane is provided wherein the fuselage formed with a tail is horizontally divided and provided at said aft end portion with a vertical stabilizing surface and two horizontal stabilizing surfaces. It is desirable that the aft end portion of the fuselage should be held together and a root or roots of the stabilizing surfaces be located with a smooth and streamlined surface being maintained on the underside of the aft end of the fuselage by insertion from the aft end of the fuselage. This is achieved in that a duct which is open at the aft end of the fuselage extends through the fuselage portions and portions of at least one root of a stablizing surface, and in that a pin is fittingly inserted in the duct. This method of connecting eliminates the need for screws, detents and a well in the underside of the aft end region of the fuselage.

Abstract: A hollow composite member for accommodating torques and/or tensile, compressive or bending forces in the case of which a circumferentially uniform tensile prestress is generated in an outer material layer essentially along its entire axial length by inner supporting members accommodating pressure in the radial direction, and where, especially in the outer material layer a compressive prestress which is either uniform or increased towards the center is prevailing as a result of inner supporting members accommodating tension in the axial direction.

Abstract: An offset rotary machine including a printing unit with two plate cylinders which are arranged at a predetermined distance from each other. The two plate cylinders are mounted so as to be engageable and disengageable alternatingly against a rubber blanket cylinder and an inking mechanism. A single inking roller is pressed against the engaged plate cylinder. Only a single dampening roller of the dampening mechanism is pressed against the inking roller. The alternating engagement of the two plate cylinders makes it possible to carry out a flying plate exchange while maintaining the ink/water balance and, consequently, preventing a misprint until the ink/water balance has been reached. Moreover, an additional printing unit, inking mechanism and dampening mechanism is not necessary for the flying plate exchange.

Abstract: A system in which a surface tension device is connected at the outlet of the propellant tanks, said surface tension device having surface tension gas barrier means, the presence of gas bubbles at the inlet of said surface tension device is detected and a detect signal is produced, said detect signal indicating that the propellant tanks are empty. The detect signal then causes the spacecraft thrusters to be fed from an auxiliary propellant tank. The latter can be implemented inside a main propellant tank.

Abstract: In a method for the preparation of highly elastic, cold curing polyurethane foams, equilibrated organofunctional polysiloxanes of the average general formula ##STR1## wherein R.sup.1 is methyl or R.sup.2,R.sup.2 is chloropropyl,n has a value of 0 to 12,m has a value of 1 to 8 when R.sup.1 is methyl and a value of 0 to 6 when R.sup.1 is chloropropyl,are added in amounts of 0.01 to 2.0% by weight, based on the polyols, to the reaction batch.The stabilizing properties of the organofunctional polysiloxanes are superior to those of the known products. The foams, produced pursuant to the invention, have a coarser cell structure and a higher elasticity. The foams are more open-celled as measured by the impression force.

Abstract: A hair drier hood is formed of an approximately sickle shaped laterally open cap (1) and a pair of arms (4, 5) located on the opposite sides of the cap. Each of said arm has a heating element (12), and a plurality of spaced apart heating elements (8) are located in the cap. A box shaped projection (2) is located at the end of the cap arranged to be located adjacent the neck of a person. A blower (13) is positioned in the projection (2) and arranged to direct air into the cap. In the cap (1) the heating elements (8) are separated from ducts (15, 16) by a reflector (10). The reflector (10) contain air outlet orifices (9) spaced apart along the cap. Air is directed through the ducts (15, 16) along the length of the cap (1) and passes through the air outlet orifices (9) and toward the head of the person using the drier.

Abstract: The invention relates to the guidance of the hub (23) of a clutch disc (13) of a friction clutch (1), independently of the splining (27) of the gear shaft (29). The guidance of the clutch disc (13) takes place through a bearing (41) which supports itself for the one part on the hub (23) of the clutch disc (13) and for the other part on a component of the friction clutch (1). Due to this arrangement a satisfactory centering of the clutch disc (13) is guaranteed, the pilot bearing for the guidance of the gear shaft can be eliminated and the fitting of clutch and gear on the internal combustion engine is substantially facilitated.

Abstract: An adapter arrangement for heart pacemakers includes an adapter member of an elastic, insulating material and a clamping bushing of a conductive material. The clamping bushing is surrounded by the adapter member and defines a longitudinal bore. The adapter member further defines a threaded bore which extends transversely of the longitudinal bore of the clamping bushing. A plug lead provided with a pacemaker plug is connected to the adapter member. A clamping screw can be screwed into the threaded bore. A stripping device includes a stripping holder with an lead guide shaft which is insertable in the adapter member. A stripping ring is slidingly mounted on the lead guide shaft.

Abstract: The coupling has a hub (2) rotatable in a housing (3) at least partially filled with viscous fluid. Two sets of plates (7, 10) are non-rotatably attached to the hub and the housing and alternate in the housing in an overlapping relationship. One set of plates (7) of the coupling (1) comprises segments (14) which are uniformly inclined in one direction and which contact corresponding plates (10) of the other set.

Abstract: A recording and/or reproduction apparatus having a control circuit so that when it is desired to reproduce information recorded in tracks on a recording medium, after such a reproducing operation has been stably performed, the information recorded in the track is caused to be memorized in a memory.

Abstract: A recording or reproducing apparatus has a recording or reproducing head which is radially shiftable on a flexible disc and a disc stabilizer member which is arranged to confront the head across the disc and is provided with a recessed groove formed in a shape according to the passage of the head. The stabilizer member is further provided with a positive pressure generating slant face which is located close to the recessed groove on the downstream side of the groove relative to the rotating direction of the disc. The confronting state between the disc and the head is further stabilized by virtue of the slant face.

Abstract: The invention relates to an enossal implant, which comprises a primary cylinder (10) with a central longitudenal bore (13) which can be introduced into the jawbone and is anchored therein in positive and/or non-positive manner, as well as a secondary cylinder (100) insertable into the primary cylinder (10) and which has an oscillating rod (211) inserted and held in the longitudenal bore (13) and guide tube (30) of primary cylinder (10), said rod carrying an upper modular tube (220) made from an elastic material arranged at a distance from guide tube (30), accompanied by the formation of an air gap (225) and which is constructed at its free upper end for the connection of the dental prosthesis, whereas its lower end is connected in fixed or detachable manner to the primary cylinder (10), so that an implant is obtained which not only leads to a positive and nonpositive connection to the bone and a load-free stabilization of the primary cylinder (10), but whose oscillating rod (211) absorbs the horizontal, verti

Abstract: A fish roping device, having a relatively U-shaped spring member with two arms, a rigid handle connected to the base section of the U-shaped spring member, a first arcuate member having a first end and a second end, the first arcuate member being pivotably connected near its second end to one arm of the spring member, a second arcuate member having a first end and a second end, the second arcuate member being pivotably connected near its second end to another arm of the spring member, a hinge for connecting together the second ends of the first and second arcuate members so that the arcuate members pivot relative to one another, the first and second arcuate members being movable between an open position in which the arms of the U-shaped member are pushed apart from a rest position, and a closed position which is entered when an impact is imparted on the hinge so that the arms of the U-shaped spring member return to the rest position, a rope having one end releasably connected to the first end of the first arc