Abstract: A photographic multilayer direct-positive silver halide element is provided comprising at least two direct-positive fogged silver halide emulsion layers the undermost emulsion layer comprising one or more non-spectrally sensitizing electron acceptors and the uppermost emulsion layer comprising one or more electron-acceptors at least one of which is a spectrally sensitizing electron acceptor. The direct-positive element has reduced gradation and extended exposure latitude.

Abstract: (Hydrocarbon-peroxy hydrocarbon) phosphonates, useful as polymerization initiators, prepared by the reaction of a hydroperoxide with a phosphonate of an unsaturated hydrocarbon may be used to polymerize acrylic monomers.

Abstract: A remote control and display panel system suitable for eating establishments, for example, wherein the orders as to item and quantity per item, for a succession of customers, may be fed into a composite memory system and displayed on the display panel so that cook personnel may perceive the same. Information fed into the memory system is continuously strobed so as to supply a visually continuous read-out of such information on the display panel. Features are incorporated in the system to provide for accommodation to the use of a plurality of controls panels with one or more display panels; equipment is provided for clearing and ease of operation.

Abstract: A new azetidine derivative of the formula: ##EQU1## wherein R.sub.1 represents a penicillin- or cephalosporin-amido group, R.sub.2 represents one of the groups of the following formulae: ##EQU2## wherein R.sub.4, R.sub.5 and R.sub.6 are the same or different and each represents a hydrogen atom or a lower alkyl or alkenyl group, n represents 2 or 3 and - in case formula IIB represents a phenyl group - this group may carry one to four further substituents selected from the group consisting of halogen atoms and lower alkyl, lower alkenyl and phenyl groups,R.sub.3 represents an amino group of the formula ##EQU3## wherein R.sub.7 represents a hydrogen atom or a lower alkyl group and R.sub.8 represents a lower alkyl group, orR.sub.3 represents a N,N'-disubstituted hydrazino group wherein the substituents are lower alkyl groups, e.g. the N,N'-diisopropylhydrazino group, orR.sub.3 represents the group --OR.sub.9, wherein R.sub.

Abstract: A plunger valve having a straight through passage closed by a cylindrical, elastic plunger. The plunger is movable at right angles to the through passage. It is connected to a screw-threaded stem by a retaining pin which is positioned in a longitudinal open bore of the plunger. In closed position of the valve, the retaining pin contacts the opposite wall of the through passage to limit the elastic deformation of the plunger. In open position of the valve, the retaining pin is slightly retracted within its bore. The retaining pin is rigidly fixed to the stem and is rotatable in the plunger, but the plunger is held non-rotatably in the valve body by circumferential friction. The retaining pin holds the plunger by a shoulder situated in the upper part of the plunger.

Abstract: Apparatus for separating a product of sublimation from a gas, in which this product is condensed in solid form on the cooling surface of a bank of parallel tubes of unequal length, so arranged that near the vapor inlet, where the solid deposits are first settling on the tubes, the distance between the tubes present there, is greater than in locations inside the apparatus farther from the inlet.

Abstract: The igniter of the generator is constituted by a deformable plate of solid ropergol bound and fixed on a wooden or metal sleeve mandrel. The plate has open striae parallel to the axis of the support and oriented radially inwards or outwards. The device is useful as an initiator for a solid propergol rocket motor.

Abstract: With a method for the fabrication of multilayers a laminate is obtained by the stacking of layers, which are formed by a carrier provided with a conductor pattern and interleaved by adhesive layers. The laminate is subjected to a process which is carried out in at least three phases: in the first phase moisture and air are extracted from the space in which the laminate is placed, in the second phase the laminate is pressed together under increasing temperature and in the third phase the pressing process is performed under another temperature rise to a certain maximum value and under a further increase in pressure, while air is admitted into the space where the laminate is situated.

Abstract: A leveling system for controlling the relative attitude between the sprung and unsprung portions of the vehicle, which includes at least one leveling strut comprising a cylinder connected at one end to one of the vehicle portions, a valved piston reciprocally mounted within the cylinder, a piston rod connected to the piston and projecting from one end of the cylinder and adapted for connection to the other end of the vehicle portions, a quantity of damping fluid within the cylinder for damping reciprocal movement of the piston, means defining a gas chamber containing a quantity of gas, a partition for separating the gas from the damping fluid, and means for varying the pressure of the gas in order to control the relative attitude between the sprung and unsprung portions of the vehicle.

Abstract: A transistor amplifier comprising a first transistor having its base connected to the input terminal of the amplifier and having one of its further electrodes connected through a coupling capacitor to the output terminal of the amplifier. The transistor has the other one of its further electrodes connected to the base of a subsequent transistor having the corresponding electrode of its further electrodes connected through a second coupling capacitor to a second output terminal of the amplifier. The capacitance of the second coupling capacitor is higher than that of the first coupling capacitor.

Abstract: In the process of beneficiating ilmenite ore by the chloride method the improvement wherein the beneficiate is cooled without oxidation hot finely divided particles comprising using the principle of film boiling to effect volatilization of a non-oxidizing liquid to both fluidize and cool the hot particles.

Abstract: A pressure-recording process in which a methine dye is produced by bringing image-wise into reactive contact with the aid of pressure, a compound reacting as an acid with a dye precursor compound corresponding to the following general formula: ##EQU1## wherein: R.sub.1 represents (1) an aryl group substituted with an ether group R.sub.6 --O-- in which R.sub.6 represents a hydrocarbon group or (2) a heterocyclic group;R.sub.2 represents (1) an aryl group substituted with an ether group R.sub.6 --O-- in which R.sub.6 represents a hydrocarbon group, (2) a heterocylic group or (3) a ##EQU2## group, in which Z represents the necessary atoms to close a heterocylic nucleus,R.sub.3 represents (1) a --XH or --X--R.sub.7 group, in which X is oxygen or sulfur, and R.sub.7 is an organic group, (2) a ##EQU3## group in which each of R.sub.8 and R.sub.9 (same or different) represents hydrogen or an alkyl group, a cycloalkyl group, an aralkyl group, or an aryl group, or R.sub.8 and R.sub.

Abstract: A device for manufacturing a plastic tube with transverse or helical grooves consisting of an extruder, two movable halves of die with an inner ribbed profile and being capable of forming a hollow mould, said halves of die each provided with circular elongations for heating the region between the opening of the extruder and the beginning of the mould, an inflatable member in the tube for conforming the tube to the profile of the mould. The inflatable member comprises a movable cylinder having two expandable end discs, an inlet and an outlet for compressed medium being situated between the two end discs, the valve closing said outlet being loaded by a spring such that only pressure medium will escape after the end discs have formed a closed space with the inner side of the tube.

Abstract: Apparatus is disclosed which functions to adjust the moisture content of casting sand as it is being recovered, so that the sand may be re-used without significant or further adjustment of its water content. The apparatus includes a cooler-drier which receives hot castings and sand and discharges the sand and castings separately. A water spray impinges upon the sand and castings as they are moved through the cooler-drier and a temperature sensor which senses the temperature of the sand/castings mixture at the inlet controls the water spray so that the discharged sand possesses a uniform and selected moisture content.

Abstract: A process is disclosed for the preparation of polymers and copolymers of yl choride, which comprises polymerizing vinyl chloride or copolymerizing vinyl chloride and monomers copolymerizable therewith in the presence of a peroxide having the general formula ##SPC1##Wherein R represents an alkyl- or an alkoxy-group having from 1-6 carbon atoms as an initiator. The initiator is used in an amount of 0.01 to 1.0% by weight, calculated on the monomer or monomer mixture. The foregoing peroxide may be used in combination with another structurally similar peroxide or with other peroxides also capable of polymerizing or copolymerizing vinyl chloride in an amount of 0.01 to 0.1% by weight, calculated on the monomer or monomer mixture.

Abstract: A process for preparing a supported nickel catalyst is described in which precipitation of the nickel on a support occurs by mixing an aqueous solution of a nickel salt, a solution of an alkali metal carbonate and an alkali metal hydroxide containing, by weight of the hydroxide, at least 10% of the carbonate and a support to form a suspension which during the whole of the precipitation is between 75.degree. and 100.degree.C, is at a pH between 8.0 and 10 and has an alkalinity greater than 0.010N.

Abstract: For withdrawing a bundle of pipes from a heat exchanger and for inserting such bundle the required tractive forces should be exerted on the bundle in a direction in line therewith by means of a key. In order to engage the pipe bundle at its front end and to firmly grip it in a manner that hanging through of the pipes is restricted to an admissible value, the gripper comprises a clamp having at least two clamping jaws adapted to engage the outer circumference of a front flange of the bundle of pipes.

Abstract: Hydrocarbon cracking is carried out by means of a catalyst which is a novel synthetic smectite composition related to saponite plus accessory hydrous magnesia. The composition is calcined prior to use as a catalyst.

Abstract: A heel lasting machine for wiping the heel portion of the margin of an upper mounted on a last against an insole secured to the last bottom by wipers that are yieldably mounted and that are constrained against yieldable movement at the beginning of the wiping operation.

Abstract: There is disclosed herein a machine for applying cement to the periphery of an insole that is located on a last bottom and for wiping the entire margin of an upper mounted on the last against the insole to thereby adhesively secure the entire upper margin to the insole.