Abstract: A solenoid valve unit for the control of the supply of compressed air to an air driven load and controlling the letting off of such air from the load has a valve housing with a pressure port, a power air port, a let off port for the valve space and a further let off port for the load driven by compressed air. The further pressure let off port is opened up and shut off by a valve plate or thimble that is only moved by pressure. This design makes possible a compact form of the valve so that the pressure port, the power air port and the further pressure let off port are placed on only two housing faces.

Abstract: The present invention is concerned with a pressure chamber grinder equipment in which finely divided material is ground to ultra-finely divided particles at each other at an elevated pressure. The objective of the invention is to achieve maximal economies of energy and an optimal grinding process. The invention is characterized in that the equipment comprises at least one horizontal plug pipe (1) provided with a feeder funnel and with a push cylinder (2), a pressurized equalizing tank (3) connected to the plug pipe (3), a screw conveyor (4) being passed across the bottom portion of the tank (3) for the purpose of feeding the material in a loose state into a pre-grinder (6), at whose outlet side the material-gas flow is divided into component flows of precisely equivalent speed and composition, which component flows are passed each through a grinding nozzle (10) of its own, of the shape of a venturi tube, into the grinding chamber proper, the nozzles being directed conically towards each other.

Abstract: An elastic joint comprises an intermediate socket of an elastic material which firmly adheres to, and is clamped between, a housing and an inner part and which has a constant thickness in the main load direction, over a substantial portion of its width perpendicular to the main load direction.

Abstract: A buckling-type paper sheet folder comprises at least two pairs of folding cylinders W1 and W2 and two folding pockets F1, F2. The adjustable sheet stops 65,66, embodied by stop rails, of the folding pockets F1, F2 are secured to endless belts 67,68,69 and 70 which are drivable, conjointly two and two, through a manually actuable shaft 79 or 80. Scales of length S1 to S8 are carried on scale bands 48 and 49 which are associated each with one of the folding pockets F1 or F2 and displaceable by, the respective drive shafts 79, 80 in synchronism with the sheet stops 65, 66. The scale bands 48 and 49 are mounted in the housing to be visible through windows which are provided with reference marks. The sheet stops 65 and 66 can be set to the desired position through the closed housing by means of knobs 81 and 82. To facilitate the setting of the sheet stops, a plurality of scales S1 to S8 is provided on each scale band, each associated with a folding manner and sheet size, and made separately noticeable by a light.

Abstract: A transfer station from a longwall chain conveyor to a drift chain conveyor have upper and lower reaches which cross alternately. The upper belt section of the longwall conveyor comprises a scraper over the upper belt section of the drift conveyor. The working face side of the longwall conveyor has a plane guide for a coal plane and a plane chain which at least at the drift-side end of the longwall conveyor is guided via guide wheels to a gob-side drive unit. These two drift-side guide wheels are arranged with a vertical spacing from each other in the lower belt section of the longwall conveyor such that they form between them a passage for the chain belt and for the tappets of the longwall conveyor attached thereto. The drift-side guide wheels are arranged so close to the drift conveyor that in its drift-side and position the coal plane can transfer the won coal directly into the drift conveyor. In all, an especially compact plane chain deflection integrated into the longwall conveyor is realized.

Abstract: A folding machine includes an entrance feed for the infeed of materials to be folded which are operated on by a plurality of folding devices arranged along the feed path, each of which feeds the material after folding into a receiving pocket which has an adjustable stop. The stop is adjusted so that the materials being fed are received in the pocket at the correct location so as to position them for subsequent folding or for ejecting at an ejection point. The invention provides a conveyor belt which operates so that an upper transport reach is movable below the ejection point to receive the folded materials. Associated with the conveyor is a brake element which overlies the materials which are fed on the conveyor transport reach. The brake element rests on the folding material and is mounted so that it applies a yieldable pressure on the materials as they moved therealong.

Abstract: A silencer for the barrel of a firearm comprises a sheath defining an interior space having open opposite ends. The sheath has a longitudinal axis. A plurality of partitioned plates are connected to the sheath and extend across the interior space thereof. Each partition plate has an opening therethrough of a size which is wider than a caliber of the firearm barrel and which lies in a plane which is inclined at an acute angle with respect to the axis. Each partition plate, in a direction along the axis, is rotated around the axis by a selected angle with respect to a previous partition plate to produce a convoluted path for gases discharged from the gun barrel. The first partition plate in the sheath adjacent a firearm valve which is connected to one open end of the sheath, defines an initial expansion chamber for the gases.

Abstract: A waste heat removal system for a regenerative coke oven battery which has side burners and a regenerator portion comprises a plurality of substantially parallel longitudinally extending channels of substantially equal cross section which are defined in the battery at spaced lateral locations and extend over substantially the entire length of the battery below the regenerator portion. A common transversely extending collecting duct adjacent one end of the battery is connected to each of the channels. A waste heat collection duct is disposed along at least one side of the channels and it is associated with a selective portion of the regenerator and a long cross channel is connected to the waste heat connection duct and to selected ones of the channels. The cross channels extend from the pusher side to the coke side or vice versa and form alternately short and long connections to corresponding longitudinal channels.

Abstract: An apparatus for handling tires to be placed in a vulcanizing machine--particularly for retreading the tread or the whole tire--and for the removal of the tire from the machine, comprises: a housing developed along and behind the front of a set of such machines. The housing has a conveyor and slide rails. A carriage is movable on the rails so that it can reach transfer positions near each of the machines. An arm with a plurality of sections and having several degrees of freedom include a drawing device to engage the upper rim of a tire in horizontal position, to transfer it from an open mold on to the conveyor, and to transfer it from a drawing position as far as the open mold of a machine.

Abstract: A methotrexate derivative having the following general formula is incapable of forming polyglutamate and thus is expected to have reduced cytotoxicity associated with the formation of polyglutamate derivatives in a living cell, ##STR1## wherein n is from 0 to 5.

Abstract: A sanitary napkin comprising a fluid transmitting wrapper, a fluid absorbent pad housed within said wrapper, a fluid impervious lamina located between the surface of the absorbent pad and the interior of the garment-side of said wrapper, said impervious lamina also spanning the edges of said absorbent pad to avoid permeation of the body fluids, at least one adhesive band extending along the length of the outer surface of the garment-side of said wrapping for attaching said napkin to an undergarment, and a protecting web covering said adhesive band, is provided with an integral disposal bag which comprises a pair of layers of an impervious material arranged between said impervious lamina and the garment-side of said wrapping, said layers also spanning the side edges of said absorbent pad and being formed by a single sheet of said impervious material folded over itself at its side edges and closed at its ends to constitute said bag, the garment-side layer of said bag being slit throughout its length by means of

Abstract: The invention basically comprises: an isolating unit in series with the power line supplying the lamp, said isolating unit automatically disconnecting when the lamp is correctly supplied; a timer; a threshold comparator; a photodetector; a magnetic unit releasing a rod which carries a flag and is arranged to permanently connect a suitable resistance in parallel with the power line, upstream the isolating unit.

Abstract: A pneumatic sheet feeder for removing individual sheets from a stack comprises a table having a surface for supporting a stack of sheets. A pair of parallel guide rails are provided on the table and with facing surfaces so that the stack is confined between the guide rails for movement in a feed direction across the table. Blast nozzles are provided in the guide rails for blowing air against the stack to form an air cushion between lower sheets of the stack. A suction cylinder is rotatably mounted to the table and includes a suction chamber therein for receiving a vacuum. Radial openings in the suction chamber cause a suction induced adhesion of a leading edge of a lowermost feed in the stack so that with rotation of the cylinder, the lowermost feed is fed in the feed direction away from the rest of the stack. A single blower is provided with a pair of two-way solenoid valves and a switching circuit is provided for alternately activating the valves.

Abstract: With closed respiratory systems, the patient's respiratory tract is tightly connected to a closed volume to which breathing gas is supplied only in the amount taken in by the patient. To this end, the breathing gas supply must be controlled. The controlled variable is either the pressure in the ventilating circuit, or the concentration of oxygen or the anesthetic gas in the breathing gas. A dropping pressure indicates either an increased consumption or a leak. To avoid insufficient or excessive loading of the patient, it is very important to be able to distinguish consumption from a leak. The inventive device makes this distinction possible. The breathing gas amounts are adjusted in the ventilating circuit at preset different pressures and are compared with each other, and the leak portion is computed therefrom.

Abstract: The present invention concerns new (R)-, (S)- and (R,S)-1-(4'-alkylamido)-2'-{1-[N-(alkyl)imino]ethyl}phenoxy-3-alklyamino-2 -propanols having the general formula ##STR1## wherein R means a straight or branched C.sub.1 -C.sub.4 -alkyl group, especially the n-propyl group, and R.sub.1 means hydrogen or a straight or branched C.sub.1 -C.sub.4 -alkyl group, especially the isopropyl group, which compounds are useful intermediates when preparing the pharmacologically active (R)-, (S)- and (R,S)-1-(4'-alkylamido-2'-acetyl)phenoxy-3-alkylamino-2-propanols of the formula ##STR2## wherein R and R.sub.1 have the meaning given above.

Abstract: Disclosed is a method for measuring changes in a physical property of a liquid or semisolid material which comprises placing a thin metal wire in the material; passing an electric current through the thin metal wire in such a way that the temperature difference between the material and the thin metal wire is kept constant; measuring the intensity of the electric current; and calculating the heat transfer coefficient at the surface of the thin metal wire on the basis of the measured intensity of the electric current and thereby detecting changes in a physical property of the material. This method makes it possible to detect, for example, changes in the coefficient of kinematic viscosity of a food having the form of a gel or changes in the condition of thrombus formation in a blood vessel.

Abstract: In a sensor head of a measuring machine, for at least one coordinate, a straight line guiding mechanism is provided between two base parts. Springs acting in this coordinate bring the two base parts into abutment. To achieve a slackfree, stable position of rest, a stop element with a stop face for each base part is displaceable in both directions of the coordinate, counter to the action of a spring. Both stop faces point in the same direction of the coordinate. For movement, stroke lengths are free on both sides.

Abstract: A ball and socket joint, particularly a track rod joint for motor vehicles comprises a casing, a ball stud with a spherical head, and a socket received in the casing and being made of a material having a limited elasticity. At a flat polar surface of the spherical head, the socket is provided with an annular area which applies under biasing load against the flat polar surface and, upon an angular displacement of the ball stud, produces a restoring torque.

Abstract: Disclosed is an improvement in a process for desulfurization of off-gas, which process comprises contacting an off-gas which contains sulfur dioxide with an absorbing solution containing at least a sulfosuccinate, a sulfate and a crystalline gypsum to absorb the sulfur dioxide for removal therefrom, and oxidizing the resulting absorbed solution with an oxygen-containing gas while neutralizing the solution with limestone in order to fix the sulfur dioxide in the form of gypsum for separation. The improvement comprises adding maleic anhydride and limestone to the absorbed solution during the residence time of the absorbed solution, the resulting absorbed solution being oxidized with an oxygen-containing gas to reproduce an absorbing solution therefrom so as to be effectively reused for the absorption of sulfur dioxide in the off-gas for separation.