Abstract: A turbine housing for a jet engine is provided with a ring of an abradable orous material. A supporting and mounting device consisting of a cylindricoconical monoblock having a conical internal jacket provides for the convection cooling of the external surface and a cylindrical jacket for cooling air is held over the abradable ring by means of a perforated ferrule integral with the rest of the device. The abradable ring carries transverse partitions to prevent axial leakage.

Abstract: The invention relates to a polishing material of the type containing powdered cerium oxide suspended in water.According to the invention, this polishing material also contains, in combination, a substance for use as a thickener and a substance for reducing the surface tension.The polishing material is particularly useful for polishing ophthalmic lenses made from organic materials.

Abstract: A lithium electric cell. Said electric cell includes a positive electrode (1) and a negative electrode (2) in contact with a liquid electrolyte impregnates in a separator (3). The positive electrode comprising an active compound whose general formula is Li.sub.x Fe.sub.2 S.sub.z with x lying between 0 and 2, and z being not less than 3.

Abstract: A cable lock assembly for an electrical outlet box includes first and second members that cooperate with each other to define a cable receiving opening. The first member is generally U-shaped and has a locking member extending from the base thereof, which is received into an aperture in the bottom wall of the box. The second member straddles the first member and includes a base and first and second pairs of spaced legs extending from opposite ends. Each leg of the second member is received into an opening in the bottom wall and has spaced ledges that engage the bottom surface of the bottom wall to define different sized openings between the bases.

Abstract: The invention concerns an impact cooling device for the packing rings of turbine of a turbojet engine. The flow of cooling air entering an enclosure concentric to the rings, is divided into two distinct ventilation circuits by means of a ferrule of a generally circular shape, having corrugations, and with the amplitudes of said corrugations decreasing from upstream to downstream.

Abstract: The following specification describes a pullout fuse holder having a cover and a base with asymmetrically arranged stop walls permitting the cover carrying fuses and terminals to be assembled in one orientation to the base for interconnecting line and load terminals and to be assembled to the base in another orientation to store the fuses without interconnecting the line and load terminals.

Abstract: 2,3,5-Trisubstituted cyclopentanealkenoic acids display anti-microbial activity, e.g. anti-bacterial and anti-fungal, and are, in addition, useful as intermediates in the manufacture of prostanoic acid derivatives.

Abstract: A tool comprising a receptacle having a cylindrical portion defining a space therewithin adapted to receive a resilient seal after deformation of the latter by an external member is disclosed. A movable member carried by said receptacle comprises a tubular portion slidably received on the cylindrical portion and movable from a first position in which said tubular portion is opposite the space towards a second position in which said tubular portion is offset relative to the space against the action of a first spring. The tubular member is provided with an aperture adapted to receive the external member, and an element is slidably carried in said space and resiliently urged away from the latter by a pair of second springs, thereby expulsing the seal in a corresponding groove when the tubular member is moved towards its second position.

Abstract: A method and device for separating liquid mixtures by ultrafiltration wherein prior to introducing the mixture into the ultrafilter a gas is added to the said mixture. The addition occurs at a pressure higher than the ultrafiltration pressure and the mixture of liquid and gas is allowed to expand down to the said ultrafiltration pressure prior to be introduced into the ultrafilter.

Abstract: Apparatus useful in foundry moulding or casting embodying a turret having a lurality of arms rotatably mounted on and extending radially from a hub or drum rotatable about a vertical axis. The arms comprise a base, an inclined intermediate portion and an end portion parallel with the base. A fixed rack is disposed horizontally on the turret frame and extends along the arc of a circle in part of the zone swept by the arms during rotation of the hub. Each of the arms carries a pinion, whose teeth mesh with the teeth of the rack to induce rotation of each arm by 180.degree. to invert the mould or die carried on the end of the arm.

Abstract: A method of forming a double pocket envelope from a single sheet including the steps of cutting the single sheet to provide a base portion, a partition flap, and a front flap, and opposed end flaps; folding the partition flap against the base and folding the front flap against the partition flap, followed by folding the end flaps over the folded front and partition flaps; and cementing the end flaps. Next, the folded edge of the base portion and partition flaps are cut to provide a primary envelope between the base portion and the partition flap and a secondary envelope between the partition flap and front flap.

Abstract: A locking device which includes a housing, a spring biased insert, arcuately spaced retaining balls, and cup means which is securely mounted in the housing and retains the balls and the lower end of the insert. The tapered side walls of the cup means provide a cam surface upwardly along which the balls can move when a pin is inserted in the lock. When the pin is released the balls tightly frictionally engage the pin under the bias of the spring, thereby preventing unauthorized removal of the pin.

Abstract: A carding flat is illustrated wherein segments of metallic wire are retained upon a base strip by opposed brackets each of which is attached to the base strip and to the wire by an upper leg and an intermediate inwardly projecting element which carries fastening means for interlocking engagement with a lower engaging portion of the base strip, and a lower flange is provided for securing this assembly upon a flat iron or casting.

Abstract: A drop target assembly for a pinball game having a series of vertical sliders each having a target at its upper end and movable between an upwardly projecting play position and a drop position, each slider having a latch for latching the same in play position. A reset device is provided on the frame for thrusting all of the sliders upwardly to set the latches with all of the targets in play position, so that when one of targets is subsequently hit by the ball rearwardly during the course of play, the latch is released resulting in dropping of the target. Each of the sliders has an associated electromagnet including a movable armature adjacent the latch and coupled to the upper end of the slider to release the latch. A remote ball-operated device on the play field has a switch which is connected by circuitry to at least one of the electromagnets so that when the remote device is actuated the electromagnet is energized for artificially dropping the associated target.

Abstract: Fired clays, in the form of medium-sized granulates containing small quantities of trace elements which serve as nutrients for microorganisms, are used as substrates for biological filters.

Abstract: A pyridine derivative having the formula 1,3-dihydro-3-(3',4',5'-trimethoxy-styryl)-6-methyl-7-hydroxy-furo-[3,4,c] pyridine and therapeutically acceptable salts thereof are disclosed. Also disclosed is a process for the preparation of the compound. The compounds are therapeutically useful for a stabilizing effect on the red blood corpuscles and as selective diuretics.

Abstract: An apparatus for lifting logs from the ground to an elevated position in order to allow for cutting of the logs. The log lifter comprises a lever arm having one end thereof bent downwardly to form a leg, the leg having on the end thereof a detachable support tube which serves as a fulcrum about which the lever arm may pivot. The log lifting apparatus includes a first claw which is attached at the bend between the lever arm and the leg. The log lifting apparatus further includes a log gripping arm which is pivotably mounted with respect to the lever arm and which terminates in a second claw. To lift a log that is lying on the ground, the lever arm is held in the upright position and the log gripping arm is pivoted in the withdrawn position so as to be adjacent to the lever arm. The first claw is slipped under the log and the log gripping arm is then pivoted to provide for engagement of the log with the second claw. The lever arm is then pivoted, preferably by manual means, about the support tube.

Abstract: Disclosed herein is a device constituted by a rotatable head provided with radial compartments which hold batches of products and comprising a pusher for inserting the individual products into a compartment, and a device for supplying the individual products to the pusher. A movable wall is provided inside each compartment and this is sustained by a corresponding shaft whose rear extremity terminates in a rack. The racks mesh in succession with the counter-rotating gears of two drive devices movable in synchronization with the said pusher in such a way that the wall of the compartment that is in the product infeed position is intermittently displaced from the front of the said compartment to the back thereof, while the wall of the compartment adjacent to but preceding the previously mentioned compartment is intermittently displaced from the back towards the front thereof.

Abstract: 8-Aryl-1,2,3,4-tetrahydroisoquinoline and derivatives thereof having the formula ##STR1## and the non-toxic pharmacologically acceptable acid addition salts thereof; wherein R is hydrogen, benzyl, or an alkyl radical of 1 to 7 carbon atoms; R.sup.1 is hydrogen or an alkyl radical of 1 to 7 carbon atoms; R.sup.2 in each occurrence is hydrogen, an alkyl radical of 1 to 7 carbon atoms or alkoxy radical of 1 to 7 carbon atoms, alike or different; Ar is phenyl optionally substituted with one or more halogen, an alkyl radical of 1 to 7 carbon atoms, or alkoxy radical of 1 to 7 carbon atoms; and n is positive integer less than 4, are disclosed. These compounds are useful because of their anti-arrhythmic, antimicrobial and central nervous system activity.