Abstract: The invention relates to foldable spectacles comprising two lenses (1a, 1b) which can be adjusted between a support position and a folded position and which are connected to each other by means of a nose piece (10). The nose piece (10) extends on a connecting axis (I) which is arranged on a plane of the spectacle lens and comprises a folding joint (15) which is used to fold the spectacles. The folding joint (15) can be rotated about a rotatable axis (m) which extends at an acute angle (?) to the connecting axis (1), such that the spectacle lenses (1a, 1b) are arranged on the same plane next to each other in a folded position after a 180° rotation.

Abstract: The invention relates to foldable spectacles comprising two lenses ( 1a, 1b) which can be adjusted between a support position and a folded position and which are connected to each other by means of a nose piece (10). The nose piece (10) extends on a connecting axis (I) which is arranged on a plane of the spectacle lens and comprises a folding joint (15) which is used to fold the spectacles. The folding joint (15) can be rotated about a rotatable axis (m) which extends at an acute angle (B) to the connecting axis (1), such that the spectacle lenses ( 1a, 1b) are arranged on the same plane next to each other in a folded position after a 180° rotation.

Abstract: For the production of a photographic picture from an original image image (V) present in electronic form, the digital image data of the original image are recorded, especially exposed, onto a sheet type picture carrier (P) by way of a digital recording arrangement. The picture carrier is thereby located in recording position on a recording platform (10). During the positioning of the picture carrier (P) on the recording platform the picture carrier is measured with respect to size and position relative to the recording platform (10) by a photoelectric scanning device (21). A position and size correction is carried out on the basis of the thereby obtained measurement data. In the case of a photographic recording, this correction can be carried out by a corresponding adjustment of the projection optics. Alternatively, the image data of the original image image (V) are transformed by calculation and only the transformed image data are recorded on the picture carrier (P).

Abstract: An apparatus and method for braking a carriage which travels on rails of an inclined or vertical elevator. The elevator includes a cable driving device having cables connected to the carriage for moving the carriage along the rails. The carriage has a main frame assembly and a movable frame assembly, mounted to slide along the main frame assembly. The braking device comprises a cam disk assembly having eccentric disks rotatably mounted to the movable frame assembly and held in a first position at a predetermined distance away from a surface of each of the rails for frictionally engaging the rails when released from the first position. The cam disk assembly then causes a plurality of brake blocks of the brake device to engage frictionally the rails when the eccentric disks frictionally engage the rails. A first releasing device causes the eccentric disks to release from the first position and engage frictionally the rails when at least one of the cables breaks.

Abstract: A substantially straight rail assembly on which a carriage of a stationary inclined elevator is guided includes two track rails, each having two legs joined by a web having a plurality of holes. Box-shaped frames, each comprising two rails having holes and coupled together with transverse bars, are screwed to the track rails at arbitrary positions in the longitudinal direction of the track rails to couple the track rails together at a predetermined distance from each other. Splice frames connect additional pairs of track rails to the track rails. The box-shaped frames and splice frames are removably mounted to foundations positioned along a gradient surface to mount the rail assembly to the gradient surface at desired angles of inclination. A cable winch or revolving cable drive moves a carriage of the inclined elevator along the track rails.

Abstract: A wafer holding device including a frame (2) which surrounds a wafer (1) ch is received without contact, which can be moved with the wafer having at least three holding elements (3) which are directed toward the outside circumference of the wafer and which can be changed from a holding position to a release position. The wafer can be supported in the holding device during many steps associated with movement in the production process so that a multiplicity of gripping and release operations which stress the wafer surface are unnecessary.

Abstract: The eccentricity of the core of the light guide fiber relative to the outer casing of the light guide end portion is detected by viewing the end face while simultaneously rotating the light guide end portion. When an eccentricity is detected, the light guide fiber is displaced by impressing an impressing segment into the end face of the light guide end portion until the core of the light guide fiber extends coaxially with respect to the central axis of the light guide end portion. For that purpose the light guide end portion is clamped in an adjusting device under a microscope.

Abstract: The electrically driven hand tool such as hand-operated drilling, milling or sawing machine includes a universal driving electromotor controlled via electric circuits by means of a plurality of switches, the control elements of which are in the form of pushbuttons arranged in a matrix or rectangular array on the top surface of the tool housing. The pushbuttons are illuminated when actuated and include a digital keyboard connected to a microprocessor to enter digital data corresponding to the desired value of speed or torque, and the microprocessor adjusts, via a power circuit, the electromotor to the entered data.

Abstract: Aqueous wax dispersions containing a non-oxidized paraffin wax, a cationic surfactant of formula I ##STR1## in which the significances of the symbols are given in the text, and optionally a cold stabilizer such as ethylene glycol, have excellent stability when used for textile finishing under high-shear conditions, for example in jet dyeing machines.

Abstract: A portable electric device in which a surveying arrangement is incorporated for permitting a reading of the corresponding operating condition. The surveying arrangement consists of a visual reading instrument which is arranged on the casing so as to be within the range of vision and which is indicating respective characteristic data of the corresponding operating condition.

Abstract: Speed regulation, either closed loop or open loop, in a hand-held electric tool such as a drill, a miller, a saw or, in particular, combination tools for home use, is carried out by use of a microcomputer. Then-present operating conditions such as the speed of the drill bit, the direction of rotation of the bit, the presently engaged gear, etc. are indicated by a display which has a plurality of fields which are selectively lit. Alternatively, the display can include a seven-segment indicator for displaying the speed. Overload indication is also furnished, as is an automatic shutoff when the motor current exceeds its nominal value. The display, overload indication and shutoff, etc. are all computer-controlled.

Abstract: The present invention relates to a process for producing a non-woven fabric comprising impregnating a non-woven fibrous web with an aqueous binding agent dispersion containing, as coagulation agent, a polyurethane having a weight average molecular weight of from 500 to 20,000 which is the reaction product of(i) a polyoxyalkylated aliphatic amine containing d nitrogen atoms, where d is 1 to 5, and where d is greater than 1, each nitrogen atom is connected with the next by a (C.sub.2-4) alkylene moiety and from d+1 to d+2 polyoxy(C.sub.2-4)alkylene units, with the proviso that the molecule contains C.sub.2 alkyleneoxy units and C.sub.3 and/or C.sub.4 alkyleneoxy units with the C.sub.3 and/or C.sub.4 units forming the majority of alkyleneoxy units, and(ii) from 0.1 mols to 2 mols per mol of (i) but not exceeding the stoichiometric amount of a polyisocyanate,which product is optionally in quaternized form and, is present in an amount of from 0.

Abstract: The reaction between (a) a polymerisate of acrylamide and/or methacrylamide and optionally of one or more further types of polymerizable ethylenic-unsaturated monomers, (b) formaldehyde, (c) a secondary amine and (d) a functional derivative of an acid having stabilizing properties against further polymerization of (a) and containing in the functional radical at least one NH group capable of entering into equilibrium reaction with formaldehyde under the reaction conditions used, e.g. urea, under neutral or basic conditions and in certain molar ratios, produces products, which in free base, acid addition salt or quaternary ammonium salt form are useful as flocculation agents, and particularly as retention aids for paper manufacture.

Abstract: A dyeing or printing process for substrates consisting of synthetic or semi-synthetic, high molecular organic substances of hydrophobic character, performed with an organic dyestuff which is dispersed in a liquid organic compound containing a dissolved alkyd resin acting as a dispersing agent.

Abstract: Disclosed is a textile wet treatment process wherein, to increase the lubricity of the substrate, certain specified polyurethanes are employed in the treatment liquor.

Abstract: A universal motor is energized by a speed setting circuit during one half wave and a speed control circuit during the next half wave of each cycle of an AC supply. The speed setting and speed control circuits each have a separate timing circuit including a capacitor. There is thus no residual charge on the capacitor of the speed setting circuit remaining from the operation of the speed control circuit during the preceding half wave. The residual charge prevented the setting of low motor speeds in the known systems. The speed control circuit includes a storage capacitor transformer coupled to the motor so that its initial charge corresponds to the current through the motor during the preceding half wave. The charge is transferred to a second capacitor. When the voltage across the second capacitor reaches a predetermined threshold valve, a switch in the speed control circuit becomes conductive and current flows through the motor.

Abstract: A first thyristor, under control of a speed setting provided in an RC circuit varies the phase duration of current supply to the motor during positive halfwaves of the a c supply, and a second thyristor controlled in accordance with the motor current provided through the first thyristor determines the phase angle during which current flows through the motor in the negative halfwave of the voltage supply, so as to maintain the speed at the set value under varying conditions of load. During positive halfwaves, a capacitor is charged to a voltage corresponding to the amount of current flow through the motor and during the following negative halfwave, the charge is increased at a rate set by an RC circuit, resulting in turning on the second thyristor early under heavy load conditions, and late under light load conditions, and indeed not at all under idling conditions.