Abstract: A tension member for use as a rock anchor or the like has a plurality of steel wires embedded in a tubular member with a central bore and formed of a hardenable plastics material, such as a synthetic resin. The outer surface of the tubular member is profiled such as in the manner of a screw thread so that an anchor member can be threaded on to the tubular member. The steel wires are arranged symmetrically around the axis of the tubular member for carrying the load transmitted by the tension member. If there is a displacement of the rock anchored by the tension member then both the tension and shearing stresses acting on the wires can cause individual wires to be displaced from the tubular member into its central bore. As a result, the flexibility of the tension member is increased and the most highly stressed wires can move out of the tubular member into its central bore.

Abstract: A rotating head type reproducing apparatus, arranged to reproduce a recorded signal by tracing, one after another many recording tracks formed on a record bearing medium at a predetermined pitch by a rotating head, includes a moving mechanism for moving the record bearing medium in a direction transverse to the recording tracks; a shifting mechanism for shifting the rotating head in a direction transverse to the rotating plane thereof; a pulse signal generator for generating a pulse signal in association with the moving operation of the moving mechanism on the record bearing medium; a counter for counting the pulse signal, the count datum of the counter being arranged to return to the initial datum every time a predetermined number of pulses of the pulse signal are counted; a timing signal generator for generating a timing signal in association with the rotation of the rotating head; and a control device for forming a control signal for controlling the shifting mechanism on the basis of the count data of the

Abstract: Disclosed is a high-acceleration resistant, programmable, electronic time fuze and a method of an apparatus for the correction of the operating time of this time fuze by muzzle velocity measurement carried out inside the projectile or at the gun tube. The time fuze uses the muzzle velocity measured at firing to adjust its operating time. Thus, range dispersion of the event time is substantially reduced. The muzzle velocity is measured with a metal sensitive probe installed inside the projectile. When the probe passes annular grooves in the gun wall, an oscillator is detuned and generates pulses for determination of the projectile muzzle velocity. A bidirectional counter responds to the pulses in one direction, to other information in the other direction and sets off the fuze at a predetermined count such as zero.

Abstract: An eye-piece constituting part of a finder optical system in a camera is constructed from three lens components, one of which is made axially movable to effect adjusting diopter, wherein the refractive powers and forms of all the components are so properly chosen as to maintain good stability of aberration correction throughout the adjusting diopter range.

Abstract: A magnetic recording and reproducing apparatus which comprises recording and reproducing means including a magnetic recording/reproducing head and a capacitor connected in series to one end of the head winding to remove the DC component of a recording current flowing to the head; recording/reproduction switch-over apparatus including first and second switching circuits which are respectively grounded on the sides opposite the sides associated with the wiring of the head; and inhibiting apparatus for inhibiting the recording/reproduction switch-over apparatus from operating as a result of a variation in the potential of one terminal of the capacitor.

Abstract: A method and a circuit for processing the signals of an earth-horizon sen of a circularly orbiting earth satellite. The earth-horizon sensor operates in the infrared range and includes, in the focal plane of an input lens, a chopper disk which is periodically reciprocated with a determined chopper frequency (f) and has a diameter corresponding to the image of the earth, as well as a detector (1) receiving the periodically interrupted light radiation of oppositely located earth rims. The output signal of the detector (1) is demodulated synchronously with the chopper frequency (f) in order to derive an off-course signal. In order to suppress the influence of the earth anomaly, the amplified output signal of the detector (1) is additionally synchronously demodulated with the doubled chopper frequency (2f), according to the invention, in order to produce a symmetry signal.

Abstract: A control clutch mechanism embodying a first aspect of the invention has an inner clutch part and an outer clutch part defining an annular space therebetween, with a viscous control unit and a frictional clutch unit being provided which consist of two sets of plates arranged in the annular space, each set of plates including plates alternately nonrotatively connected with one of the clutch parts, respectively. An axially movable annular piston is slidingly arranged in fluid-tight engagement between the viscous control unit and the frictional clutch unit and a pressure plate is located between the annular piston and the frictional clutch unit. A first stop is provided for the annular piston and a first spring acts between the piston and the pressure plate.

Abstract: A sanitary towel for absorbing body fluids composed of an absorptive hydrophilic fiber filling having a cover, the cover being composed of a liquid-impermeable composite material and having a defined liquid-permeable zone. The core of the filling material contains an insert having high absorptive polymers therein and being covered with a liquid-permeable woven carrier material, fleece or tissue. Such towels are easy to manufacture, highly absorptive and possess good tactile properties.

Abstract: Apparatus for testing the dielectric strength of insulating and/or cooling media, particularly insulating oils for electrical apparatus and equipment such as transformers, converters, switches or the like wherein a vessel is provided within which the material to be tested may be contained with electrodes providing a spark gap arranged therein being connected to the high voltage side of a testing generator having a transformer and a voltage control device, the internal resistance of the testing generator being made voltage-dependent and increasing with increasing voltage.

Abstract: A knee joint prosthesis includes a C-shaped femur cap to be fitted onto a resected femur condyle. The C-shaped femur cap is made up of two arch-shaped parts spaced apart and connected by a relatively flat third part. Each of the arch-shaped parts has a different radius. The arch-shaped part with the larger radius has an oblong hole extending in the circumferential direction of the part. A shaft can be placed through the oblong hole from the femur into the tibia. In addition, a tibia cap can be fitted onto the plateau of the tibia.

Abstract: In a method for producing footwear, wherein the shaft and the shell sole of the footwear are glued together, the leather upper part of the footwear is first cut to size without the formation of a lasting fold, it is prepared and then roughened along a lower border thereof. After shaping of the tip, so as to conform to the last, the preformed shaft is stretched to measure, and a rear cap is simultaneously molded in. The shell sole, which is likewise glued, is placed on a glued border and pressed against at least the tip and heel and is also possibly sewn with a seam, after which a cover sole is placed and the shoe or footwear is completed.

Abstract: A combination key includes a hollow head, a hollow stem connected to the head and a plurality of teeth mounted on racks longitudinally movable in the head and stem. The racks are in meshed engagement with toothed control wheels which are mounted in the head and emerge partially to the outside. The control wheels are located in the head next adjacent the stem. The length of the head is at least equal to the length of the stem so that the racks can be accommodated in the head when the teeth are in a position of maximum retraction.

Abstract: The invention relates to a gluing apparatus which can be used in particular as part of a book casing-in machine. The gluing apparatus includes an application roller for applying a glue layer to a surface to be glued and a dosing roller for dosing the amount of glue. The application roller comprises an axis-parallel depression and the dosing roller comprises an axis-parallel projection engaging in the depression. The profile of the projection (20) of the dosing roller (2) merges from the cylindrical peripheral surface (4) via an involute into a coaxial cylindrical portion (22) of greater diameter while the profile of the depression (10) of the application roller (1) merges from the cylindrical peripheral surface (3) via a curve forming the counter profile to the involute of the projection (20) into a coaxial cylindrical portion (12) of smaller diameter.

Abstract: A device for operating a roll-screen having a winding roll for winding up a screen cloth thereon, which comprises a changeover wheel and a guide wheel in confronting relation with each other, one of which is rotated with the winding roll in screen raising and lowering directions and the other of which is rotated with the winding roll only in the screen lowering direction, the wheels being so arranged that when the screen cloth is lowered two wheels are rotated together, when the screen cloth is stopped and subjected to screen raising force the one wheel is not rotated in screen raising direction due to engagement thereof with the other wheel, and when the roll is slightly rotated in screen lowering direction the one wheel is released from the other wheel whereby the one wheel is freely rotated to make the winding roll wind up the screen cloth thereon.

Abstract: A driving circuit for a multi-phase stepping motor including an odd number of phase windings which are sequentially connected in series to each other so that a starting end of one winding is connected to a terminating end of an adjacent winding to form an annular connection, comprises switching means each connected to a junction between two adjacent windings, and each junction is connected to a positive pole or a negative pole of a drive power source through the switching means or is not connected to any sides of the power source by means of each switching means. The switching means are alternately and repeatedly controlled so that the total number of the junctions connected to the positive pole or the negative pole of the power source when the motor is driven is two or three, or the switching means are controlled so that two or three junctions are alternately and repeatedly connected to the positive pole or the negative pole of the power source each time an input pulse is supplied.

Abstract: The invention relates to a fluid-friction coupling for the cooling fan of an internal combustion engine. The torque transmission of the coupling is controlled in dependence upon the working temperature of the internal combustion engine. In order to suppress undesiredly high temperatures within the coupling at excessively high drive-input rotation speed, the torque transmission and thus the power loss are reduced when the working temperature of the coupling rises.

Abstract: Travelling oscillation waves are generated in a lens assembly at an oscillation element by impressing a voltage to an electro-restriction element or elements, whereupon a lens driving operation is performed by frictionally driving a moving element which is pressed in contact with the oscillation element. In the case of manual operation, an oscillation ring operating as the oscillation element is separated from a rotation ring which constitutes the moving element by a clutch device and then the rotation ring is manually rotated for effecting the lens driving operation.

Abstract: The invention relates to new compounds of the general formula I ##STR1## wherein R.sub.1 is a straight or branched chained alkyl having 1 to 13 carbon atoms, optionally substituted with halogen, alkoxyalkyl containing 1 to 5 carbon atoms in the alkoxy and 1 to 4 carbon atoms in the alkyl moiety or phenyl;R.sub.2 is alkyl having 6 to 20 carbon atoms; alkoxyalkyl, phenoxyalkyl, furfuryl, cyclopropyl-alkyl, cyclopentyl, cycloheptyl, thiazolyl, triazolyl, thiazolinyl, pyridinyl, picolyl, benzimidazolyl, piperonyl, pirimidinyl, chlorobenzothiazolyl, benzyl, phenyl substituted with chloro and/or amino, or amino and alkyl, or amino and nitro groups, alkenyl, alkinyl, aminoalkyl, dialkylamino-alkyl, alkylaminoalkyl, alkylphosphonateammoniumalkyl, 3,5-dichlorophenyl-hidantoinyl, or thiadiazolyl optionally substituted with alkyl;R.sub.3 is hydrogen, phenyl, benzyl, alkenyl, alkyl, hydroxy, alkoxy or alkoxyalkyl; orR.sub.2 and R.sub.3 together stand for a 3,5-dichlorophenyl-hidantoinyl group;R.sub.

Abstract: A visual field searching device is arranged to divide the visual field to be searched into a plurality of intermediate fields each of which is larger than a constituent unit field; to select, for each of the intermediate fields, a typical or representative object distance data from among object distance data obtained for individual constituent unit fields included in each intermediate field; further, for each intermediate field, to discriminate whether the representative distance data thus selected is in a predetermined relation to other object distance data; and after that, to perform a signal processing operation to obtain necessary information by processing only the number of data representing the intermediate fields instead of processing all the data for all the constituent unit fields.

Abstract: A coupling device for a photographic apparatus, comprises a mount member having a base part secured to the photographic apparatus, a cylindrical part which extends from the base part and a projecting part. A bayonet mount member is also included in the coupling device which member includes a ceramic engaging member which is made of ceramic material and is placed on the projecting part and a claw part which is formed jointly by the projecting part and the ceramic engaging member. The claw part is arranged to engage the bayonet member of an accessory to be mounted on the photographing apparatus. Other embodiments of the coupling device which incorporate a mount member of ceramic material are described.