Abstract: A cassette handling apparatus having a main body part; a cassette receiving part arranged to be able to assume first and second states relative to the main body part; a moving member arranged to be in a first state when a portion of the cassette is loaded on the cassette receiving part and in a second state upon completion of cassette loading; and a device for preventing the cassette receiving part from shifting from the first to the second state thereof when the moving member is in the first state thereof and for allowing the cassette receiving part to shift from the first to the second state thereof when the moving member is in its second state, whereby the cassette can be reliably prevented without fail from being used in an incompletely loaded condition on the cassette receiving part.

Abstract: The invention provides a novel silicone-coated, quartz glass-made optical fiber which is very advantageous in the high efficiency of the coating process as well as in the improved workability in the connecting works of the fiber terminals for extension of the communication lines by virtue of the excellent peelability of the coating layer from the surface of the quartz glass fiber even by mere drawing the coated fiber between fingers. The coating layer is formed of a radiation- or UV-cured silicone composition comprising (A-a) an organopolysiloxane having aliphatic unsaturation, e.g. vinyl, and/or (A-b) an organopolysiloxane having mercaptoalkyl groups, e.g. 3-mercaptopropyl groups, and (B) a curing accelerator.

Abstract: In a focal plane shutter of the kind having a plurality of divided blades pivotally arranged to be turnable on driving arms in an overlapped state, the weight of the blades is reduced by making them from very thin material; the blades are reinforced with embossed protrusions which are formed in the longitudinal direction of the blades for the purpose of preventing them from flexing and being damaged during their travel. Each of the embossed protrusions is within the difference in stepped height between the surfaces of the blades and the heads of blade carrying studs disposed on the driving arms. Therefore, the shutter can be smoothly operated without increasing the thickness of the blades as a whole.

Abstract: A nuclear reactor, particularly a light water reactor or a helium-cooled high-temperature reactor, is provided with a pressure relief system for relieving pressure resulting under fault conditions from coolant in the reactor pressure vessel and/or the protective vessel of the reactor, wherein the coolant is conducted from the vessel or vessels to a pressure relief station downstream thereof. At the pressure relief station the coolant is fed into a liquid reservoir 4 from which the coolant in gaseous or vapor form is fed sequentially through a washing cyclone 13 and a drying cyclone 25. Most of the radioactive fission products carried by the coolant will have been removed by the liquid reservoir 4 and the washing cyclone 13, and the coolant leaving the cyclone 25 may be safely discharged to atmosphere. Both the liquid reservoir 4 and the washing cyclone 13 are provided with cooling circuits 8 to 12 and 14 to 23 respectively for the liquids.

Abstract: A remote speed controller for an electric motor, the controller comprising a switching unit having three switches. A capacitor pack incorporating two capacitors is connected to the switching unit such that different combinations of the capacitors can be selected by one switch. The controller is connected in circuit between an AC voltage supply and windings of a motor so that selective actuation of the one switch changes the speed of the motor in accordance with the values of the capacitors selected. Further switches are incorporated to provide reverse motor capability and remote sensor capability.

Abstract: The invention relates to a process for the preparation of basic copper carbonate by reacting copper salts with alkali carbonate in aqueous solution at elevated temperatures and with stirring and subsequently isolating the copper carbonate. In this process, a waste solution from copper etching processes which contains hydrochloric acid and sodium chloride, is stirred into a 5 to 15 weight percent solution of alkali carbonate heated to 40.degree. to 70.degree. C., the pH of the solution not being allowed to fall below 6.5, and the precipitated basic copper carbonate is separated from the aqueous solution in a known manner. A light green, basic copper carbonate is obtained, which is free of copper chloride and copper oxide.

Abstract: A metal expansion dowel is made up of an axially elongated cylindrically shaped expansion sleeve and an expansion element formed monolithically with the sleeve. The expansion sleeve has a leading end and a trailing end. The sleeve has an opening with the opposite edge surfaces extending in the axial direction converging toward the leading end. The expansion element is located in the opening and is secured to the sleeve by a separable web. The expansion element is wedge-shaped and narrows in the leading end direction. An inwardly projecting stop is formed in the expansion element. When an axial force is directed toward the leading end against the stop, the web is separated from the sleeve and the expansion element is displaced axially toward the leading end of the sleeve moving along the opposite edge surfaces of the opening and widening the sleeve.

Abstract: In the disclosed zoom lens, a zoom section includes a number of lens units with at least one of the axial spacings between two successive lens units being variable for zooming, and an image forming section of positive power behind the zoom section includes a front lens unit of positive power and a rear lens unit of negative power. The front lens unit includes at least one positive lens, the rear lens unit includes at least one negative lens, and the image forming section satisfies the following conditions, with the power of the entire system taken as unity: ##EQU1## where .phi.a represents the power of a convergent surface A convex toward the front with its positive power being strongest in the front lens unit, .phi.

Abstract: A drive device for a camera in which the charging of the various portions of the camera and the film transportation are carried out by a plurality of motors individually solely used therefor, whereby control means is provided for controlling the driving of all the motors in such a manner that after the termination of the shutter operation, the initiations of current supply to the plurality of motors are displaced so that the rush currents to these motors are prevented from superimposing one upon another.

Abstract: An automatic assembly and welding system is provided for carrying out the building of various shaped sheet metal members, particularly motor vehicle bodies. The system comprises a single welding station, horizontal conveyor means for conveying vehicle frames to the welding station, and a pair of endless vertical conveyor mechanisms located on opposite sides of the welding station. The vertical conveyor mechanisms are capable of selectively bringing to a vertically oriented position adjacent the welding station and removing from the welding station various different automotive frames or body members to enable a continuous circulation of the body members along a path established by the vertical conveyor mechanism operating to repeatedly deliver new body members to the welding station.

Abstract: The invention relates to a gear-change device for a multi-ratio gear-change in bicycles or the like. A gear-change lever of the gear-change device is mounted pivotably on a basis part of the gear-change device and is formed in its middle part as winding body for a gear-change draw cable. The middle part of the gear-change lever is provided with detents with which a ratchet pawl is associated which in turn is pivotably mounted to the basic part of the gear-change device. The ratchet pawl is subject to the return force of the stressed gear-change draw cable and may be provided with its own spring element which is effective in the outward pivoting. The gear-change device comprises only very few parts and can be produced at favorable price with no restriction of functional efficiency.

Abstract: The inventive compound 4-chloromethylphenyl methyl dichlorosilane is a novel compound not known in the prior art. The silane compound can readily be prepared by the chlorination of 4-tolyl methyl dichlorosilane with sulfuryl chloride as the chlorinating agent. The novel silane compound is useful as a component of an organochlorosilane mixture as the starting material of various kinds of silicone products or, in particular, silicone resins capable of exhibiting high performance, e.g. sensitivity for radiation-induced curing, not obtained by any combinations of known organochlorosilanes.

Abstract: A method of measuring the thickness of test articles by pulse reflection ultrasonics, the length of time period as determined by the signal triggering the ultrasonic transmission and by an ultrasonic signal reflected at the end of the measurement path length being used to determine the distance travelled by the ultrasonics. In the method, the triggering signal for the ultrasonic transmitter is generated in phase with a measuring oscillation of a high and known frequency, whereafter the integral number of measuring oscillation pulses or waves which fit into a time period corresponding to measurement path length are counted, whereafter the measuring oscillation is so detuned that the residual measuring oscillation or wave found over and above that in the time period is reduced to zero and a correction value is derived from the amount of frequency detuning for the measurement path length resulting from the integral number of measuring oscillation pulses or waves.

Abstract: The disclosed zoom lens is constructed with a front lens group including, from front to rear, a positive lens unit, a negative lens unit and a positive lens unit having a positive overall refractive power. A rear lens group having a negative overall refractive power arranged on the image side of the front lens group moves axially along with the front lens group in differential relation. The rear lens group is constructed with a negative front lens having a glass relatively large Abbe number and a positive rear lens having a glass of relatively small Abbe number to achieve good stability of chromatic aberration correction against zooming.

Abstract: A color information detecting device comprising a plurality of color detecting apparatus for detecting respective different color lights from each other, converting apparatus for producing an output in non-linear relation to the input signal, changeover apparatus for selectively applying the outputs of the color detecting apparatus to the converting apparatus, apparatus for coinciding a number of successive outputs of the converting apparatus, and computing apparatus for computing the coincided signals from the coincidence apparatus. The device also includes a first constant current source for applying current of a prescribed intensity and a second constant current source for supplying current of another intensity equal to the prescribed intensity times the intensity of the current supplied from the first source which are included so that another mode can operate. The outputs of the first and second constant current sources are selectively applied to the converting apparatus.

Abstract: A photographic support comprising a paper sheet coated with a polyolefin on both surfaces thereof, in which the paper sheet contains a water-soluble aluminum salt, an unreactive sizing agent, a reactive sizing agent, and optionally a polyamide-polyamine-epichlorohydrin resin, which is particularly resistant to edge soiling.

Abstract: A zoom lens with a frontmost lens group made to have the focusing function, said focusing lens group being provided with at least one member made of a plastic material. The other part of the lens system than the focusing lens group is constructed with lenses made of materials which assure that the focal length will not vary with variation of the surrounding temperature and humidity so that when focusing is followed by zooming displacement of the image plane can be prevented.

Abstract: An apparatus for single-component measuring of exhaust gas enables the mixture composition of an Otto engine to be determined, wherein a stream of the exhaust gas is cooled, cleansed of condensate, purified and then mixed with a purified air stream in a constant mixture ratio. The stream of the mixture, or a part of the stream of the mixture, is then reacted by burning so that the exhaust gas is completely oxidized by the air and the reacted mixture is then analyzed.

Abstract: An expansion anchor assembly for use in a borehole formed in a receiving material has a leading end and a trailing end relative to the insertion direction of the assembly into the borehole. The expansion anchor assembly includes a tie rod with an expansion cone at its leading end, an expansion sleeve through which the tie rod extends and a cone sleeve positioned around the expansion cone and between the expansion cone and the leading end of the expansion sleeve. The radially outer surfaces of the expansion cone and the cone sleeve each have a different cone angle. Due to the different once angle, when the tie rod is drawn into the expansion sleeve toward the trailing end of the assembly, the part with the smaller cone angle moves in the same direction into the expansion sleeve until it contacts a stop. Subsequently on continued inward movement of the tie rod, both the expansion cone and the cone sleeve are drawn into the leading end of the expansion sleeve and effect an increased expanding action.