Abstract: A vacuum cleaner bag for use with top loading vacuum cleaner has a first collection tube and a second transfer tube, the tubes having communicating apertures near the top thereof, with a thermoplastic coating on the inner walls of the second transfer tube which is fused together to seal the second transfer tube adjacent the lower wall of the aperture thereof, the top and bottom of the first tube and bottom of the second transfer tube adhesively sealed; and a method for automatically forming the bags by superimposing the two tubes, adhesively securing them together, heat sealing the inner walls of the second transfer tube together, below the aperture, and closing the ends of the tubes.

Abstract: An endless belt with bottomless buckets or other gripping elements bolted to its outer surface at spaced locations, has endless wire ropes each loosely received in a longitudinal bore formed in confronting faces of two rows of discrete blocks of resilient material bolted to the inner surface of the belt to form a continuous rail member. The wire ropes are firmly coupled to the endless belt as they pass around end pulleys together by the wedging action created as the tension in the endless belt pulls the associated two rows of discrete blocks which have tapered side walls down into peripheral grooves in the end pulleys which also have tapered, but slightly narrower side walls. With the belt firmly coupled to the wire ropes, radial digging forces tending to pull the belt away from the end pulleys, and lateral forces generated as the digger is advanced into a pile of bulk material on a bias which tends to cause the belt to creep laterally on the pulleys, are resisted by tension developed in the wire ropes.

Abstract: The drain openings in movable and fixed platens in a press unit are wider than the largest praticle in a slurry to be dewatered and are formed by arcuate ribs dimensioned to resist the transverse forces developed as the granular particles from bridges across the slotted drain openings in rendom order. Liquid expressed through the movable platen is directed radially outward through a subplaten, passes back through the clearance between the piston carrying the movable platen and the mold wall and is discharged through a sealing and collecting ring having a series of annular grooves which communicate with longitudinal radially extending slots having longitudinal bores at the radial extremity thereof which direct the liquid to an annular passage for discharge.

Abstract: A thermoplastic container closure having a base with an open central area and a peripheral skirt depending from its outer edge for fitting about and attachment to the upper end of a container has an upstanding annular wall about the open center which supports a raised platform thereon which forms a first planar surface parallel to the base, with the platform having apertures therethrough and a shoulder at one end, and a closure flap hingedly attached to the shoulder, the flap having projections matable with the apertures in the platform such that when the flap is closed, the closure flap and shoulder form a second planar surface substantially parallel to both the platform and the base.

Abstract: An improved hinge construction is provided having cam and spring means for maintaining it in its open and/or closed positions and importantly, having parts enabling it to be adjusted as to its positioning between a door and a door frame after it has been secured in position therebetween. Adjustment in its heighth and lateral relationships may be independently accomplished. A screw is carried by the boss of a screw-on mounting plate and cooperates with a so-called driving dog to effect lateral adjustment between the mounting place and a swing or operating arm and thus, between the door frame and the door, itself. Heighth adjustment is accomplished independently by loosening a mounting or fastening screw that is used to secure the swing arm to the boss, sufficiently to enable cross adjustment between cooperating serrations carried by them.

Abstract: A strong, seamless one-piece metal bottle of substantially uniform wall thickness for containing and dispensing gas under pressure is produced from a flat metal piece by a series of deep-drawing operations to provide an elongated cylindrical shell having an open end mouth and a slight flange thereabout. A dimple is formed in its bottom end wall. The flange and an adjacent cylindrical open end mouth portion of the shell is then severed from the main body, and the wall thickness of the new open end mouth portion is tapered from the cylindrical side wall of the shell towards its mouth edge. Thereafter, the tapered open mouth end portion is turned or swaged inwardly into a somewhat blunt, rounded-in nose portion of a substantially uniform thickness that substantially corresponds in the thickness to the side and bottom walls of the formed metal bottle and that has an open end of reduced size suitable for mounting a nipple, ferrule or valve fitting therein.

Abstract: On a safety can for the storage and dispensing of liquid fuel and other volatile liquids from which the contents usually are dispensed at more or less frequent intervals, the pouring spout of the can has a cover which is at a free end of a lever which is spring biased to normally keep the cover tightly closed. The can has a fixed lifting handle in the form of a flat arch in a central area of the top of the can with the top of the arch providing a hand grip removed from the spout and its cover, a secondary handle extending above the lever on which the cover is secured and pivotally secured through an upwardly offset connection to the lever toward the free end of the biased lever terminates in a hand grip parallel with but spaced radially from the hand grip formed by the flat arch.

Abstract: As hot oil depleted shale from an indirect retorting process passes downward through a vertical shaft furnace, the residual carbon in the shale is burned out in the upper portion by air fed into the top of the furnace. The temperature of combustion is moderated by an inert gas also fed into the top of the furnace. Additional inert gas fed into the bottom of the furnace flows upward in countercurrent contact with the descending hot shale to cool the shale and heat the inert gas. The downwardly flowing gases from the upper, combustion portion of the furnace and the upwardly flowing gas from the lower, cooling portion are withdrawn from the furnace intermediate the upper and lower portions. The inert gas can be recycle gas which is heated by direct contact with the hot shale, a separate inert gas which is circulated through the heat exchanger to heat the recycle gas or a combination of the two.

Abstract: A safety rear view mirror device has a detachable mounting base part for removably securing it alternately on the brim or peak portion of a cap or the crown portion of a hat or other type of head covering. The mounting base part is bifurcated to alternately fit over and to be securely clamped by a mounting screw to the peak portion of a cap or alternatively, to rest against and to be clamped on the crown portion of a hat by a through-extending mounting screw. A flexible and ductile connector cable is endwise slidably removably mounted at one end within a collar portion of the base part and, at its other end, is adapted to be securely and detachably mounting by a spring clip to a back mounting for a back-viewing mirror. The cable is constructed for easy finger-grip bending to move the mirror into the best rear viewing position, with full assurance that the cable will stay in its selected bent positioning. The cable has a metal core cast within and enclosed by a hollow insulating sheath.

Abstract: Ammoniacal solutions that have been employed in a bath for etching copper such as in the manufacture of printed circuits is reconstituted or regenerated to substantially fully remove copper solute therefrom and retain the ammonia content thereof in such a manner as to enable a continuous reuse of the etching solution. The process is conducted in such a manner that no contaminating metal powder, compounds or sludge are formed. The reconditioning is effected by introducing used ammonia solute containing ammonium etching solution into an electrolytic bath in which cathodic and anodic electrode containing compartments are defined by a cationic permeable membrane therebetween with the cathodic compartment having an electronegative cathode electrode plate therein.

Abstract: A mirror device has been developed for use by hunters that are hunting game, such as deer, and desire to not only cover a front area, but without movement of the body or head, to readily cover the rear area at a selected standing or sitting location. A three-part mirror construction having a central part and a pair of endwise-swingably mounted side mirror parts is constructed to enable the side parts to be swung from a collapsed, pocket-carrying, protected face to face position on the central mirror part to an angular or to a substantially planar endwise extending position with respect to the central mirror part. The device is adapted to be secured in position from the back of its central mirror part by adjustable strap means that at its ends is detachably connected thereto. A pair of vertically spaced-apart and a pair of horizontally spaced-apart pivoted rings are carried by the back support frame for alternative clip-on usage of the strap means.

Abstract: A car positioning device for dumping of random cars in a rotary car dumper, and a method for directly positioning cars within a rotary dumper, where the car positioning device, movable on a trackway parallel to a track portion carrying railroad cars, has a carriage base and a pivoted car positioning arm thereon, the car positioning arm being L-shaped with a long section extending parallel to the trackway and a short section carrying a coupling apparatus, transverse the track portion, such that the long section extends beyond the carriage and beyond the guideway for the carriage, with the short section of the arm positionable within the car dumping apparatus to directly position a car within the confines of the dumper.

Abstract: Determination of the impulse response of a system such as a hydrophone is determined by generating a broad band reproducible test signal which after propagation is received and a replica of the broad band test signal is produced; either the received signal is compensated for fluctuations in propagation time of the test signal through the system and cross correlation of the compensated signal with the non-compensated signal is effected to derive the system response. A secondary signal may be used with the broad band test signal whereby the Doppler shift of the secondary signal can be utilized to determine the required compensation. Feed-back shift registers are disclosed for generating pseudo random noise for the test signal and the replica thereof. The invention permits calibration of a hydrophone in circumstances in which noise is present and variation in path length of the propagated test signal occurs.

Abstract: A desired decorative design on packaging such as tubes is made up of a combination of printed matter and a decorative foil such as a metal, pigmented or textured pattern foil. The method involves the steps of first applying the printed matter to the material with an ink treated to prevent adherence of the foil to the printed matter. Thereafter, the foil coated with an adhesive is positioned against the material and heat and/or pressure applied so that a foil transfer will occur onto all areas of the material engaged by the foil that are devoid of the printed matter. The foil is applied with a smooth continuous silicone pad. Exact registration is assured and the use of complicated die designs is wholly avoided.

Abstract: The dust collection units in a rotary railroad car dumper installation are mounted over the hopper pit along each side of the cylindrical, rotatable dumper frame so that dust ladened air can be sucked directly into the dust collection units without the need for duct work and the collected dust can be returned directly to the pit without the need for easily clogged screw conveyors and small chutes. The dust collection units also form with air shields mounted on the cylindrical dumper frame, a rotary valve which restricts flow such that ambient air is sucked into the hopper pit by the dust collection units at velocities which exceed the capture velocity of the dust clouds created by dumping of the contents of the car. The air shields include orthogonal pairs of planar members mounted on the rotary frame.

Abstract: A fixed bed gasifier has an annular series of spaced pokehole units thereabout, each unit of which is an outwardly and upwardly extending tapered tube with an end closure having an eccentrically positioned hole through which a poker may be inserted to pass through the unit for poking the fire zone of the gasifier. The tapered tube opens the gasifier vessel at the reduction zone. The hole at the end closure is closed when not in use by a movable closure that is opened only when the poker is to be inserted. The movable closure is connected with an air valve that admits atmospheric air from a manifold encircling the gasifier, at a pressure slightly above the internal pressure in the gasifier, to the interior of the unit as the movable closure is operated to expose the hole at the end of the unit, forcing hot gases in the unit back into the gasifier in the reduction zone, and permitting air only to blow out the end of the unit just before the poker may be inserted and until the pokehole is again covered.

Abstract: Rust resistant, scratch resistant coatings are formed on glass containers during passage thereof through a tunnel at 500.degree.-720.degree. C. by forming a first fluid stream by passing dry air through a bath of tin tetrachloride, forming a second fluid stream by passing dry air through a bath of phosphorous trichloride or phosphorous oxychloride, combining the two fluid streams to form a fluid coating stream, and introducing the fluid coating stream containing tin tetrachloride and phosphorous halide in a weight ratio of between 2:1 to 9:1 into the tunnel to contact the hot glass containers and form a coating on the glass containers.

Abstract: Fragile agglomerates with crushed rock fragments, such as fines which are subsequently agglomerated and which result in the crushing of rock fragments, such as oil shale prepared for retorting are mixed and delivered onto conveying means, such as a travelling grate by charging the rock fragments into a bin which delivers through a choke-feed onto the conveyor or travelling grate by introducing the agglomerates through a series of space conduits or tubes terminating inside the bin below the level of the lump material or fragments in the bin where the rock fragments have a downward travel such as to enable the aggregates to diffuse from the ends of the spaced pipes into and through the fragments and while so separated and diffused through the fragments move with the fragments onto the grate.

Abstract: A boiler which is designed to be fired by oil and/or gas comprises a water cooled combustion tube closed at one end and located within a water space of the boiler, is connected to a solid fuel fired boiler by an auxiliary furnace having a combustion chamber with means to introduce solid fuel into the combustion chamber, and an opening in the wall of the combustion chamber, the opening having an extension nozzle extending therefrom whereby hot gases may pass from the extension nozzle of the furnace into the combustion tube of the boiler at a position intermediate the ends of the combustion tube.