Abstract: A load carrying dolly for supporting and transporting items such as trash receptacles comprises a thin generally planar base formed with a peripheral series of holes with guiding posts extending upward through the holes above the upper surface of the base to centrally locate the receptacle and prevent lateral displacement. A second series of holes is provided near the margin of the base and peripheral to the first series of holes to receive the sockets of post-type casters, with the upper ends of the sockets extending above the base. To prevent separation of the caster posts from the sockets as a result of rough handling, securing means are connected to the upper ends of the posts and are considerably larger than the inside diameter of the sockets so that the posts are prevented from being inadvertently displaced. The securing means can have a portion which restricts the flaring of the end of the sockets to prevent separation of the caster posts.

Abstract: The shipping envelope comprises a forward panel and a rear panel closed along their side edges and a first bottom edge, with their second opposite edges free of each other to provide access to the interior. Each panel has an interior face and an exterior face, the forward panel being longer than the rear panel to form a foldable flap. Adhesive is applied to the exterior face of the flap and to the exterior face of the rear panel except for the marginal edges, and release sheets cover the adhesive areas. In use, the release sheet is first removed from the rear panel and the latter is pressed against a package to attach the envelope in place. One or more shipping documents may be inserted in the mounted envelope at the same or different times with the marginal edges of the rear panel allowed to bend upward to allow the envelope to accomodate the thickness of the documents.

Abstract: The entire assembly includes an upper supporting panel, a base, and spring body means between the panel and base. The panel comprises a rectangular border frame and a grid made up of a series of grid wires extending longitudinally and another series extending laterally to define rows of rectangular openings serving as spring seats. The spring body means comprise coil spring bodies and attachment heads made up of single lengths of wire. The heads are bent to U-shape with a rectangular pattern similar in size and shape to the spring seats, and portions are offset to resiliently grip the grid wires defining a selected spring seat above and below the grid and lock the head in place. The rectangular engagement of the spring components with the spring seats prevents rotation in their mountings.

Abstract: A process for recovering silver present in cuprous chloride solutions as a soluble silver chloride which comprises saturating the cuprous chloride solution with sodium chloride, subjecting the saturated solution to evaporation to co-crystallize the sodium chloride and silver chloride, separating the solid chlorides from the liquid, recovering silver from the sodium chloride-silver chloride crystals and reclaiming the sodium chloride, adding water to the liquid and cooling it to crystallize cuprous chloride. The procedure is adaptable to processes for recovering copper from its ores in which copper is reduced to cuprous chloride in a leach slurry followed by cooling the leach slurry to crystallize out the cuprous chloride from which copper is recovered by conventional techniques.

Abstract: The magnetic susceptibility of various impurities contained within coal is increased by simultaneously cotreating the coal with a metal containing compound and a gas selected from the group consisting of hydrogen and carbon monoxide.

Abstract: Apparatus for use in determining the moisture content of fodder, more particularly ensilage, by subjecting a given weight of ensilage to a predetermined pressure to force moisture from the ensilage. The apparatus includes a hollow cylinder which is removably supported on a bottom plate, which plate is in turn removably mounted on a base. A plurality of small diameter openings are formed in the walls of the cylinder and through the hollow plate. These openings provide passages through which liquid forced out of the fodder can escape from the cylinder. A piston which is free to move within the hollow cylinder is operatively connected to a source of power to apply pressure to the ensilage placed in the cylinder between the piston and the bottom plate.

Abstract: A linear objective adjustment device is provided in a rifle scope for collimation and is particularly adaptable to scopes wherein the objective end is of noncircular configuration. A lens mount containing a lens system is slidable longitudinally within the objective end of the outer housing of the scope to adjust the back focal position of the objective lens system to coincide with the focal point of the remaining lens system and then is locked in adjusted position.

Abstract: A system for generating alternating current of selected voltage at a target frequency includes a plurality of A.C. generators, at least one of which has a rotatably mounted stator. A prime mover drives a power input shaft at speeds extending through a wide range and the shaft is connected to the first rotor. As speed increases, the generator reaches the desired frequency and a sensing device releases the stator to rotate and maintain a relative speed between itself and the rotor corresponding to the target frequency. The stator drives the second rotor at its own absolute speed which is the difference between the power input shaft speed and the relative speed between the first stator and rotor. A field control maintains the desired voltage and a load control transmits the current output to a load and varies the load to maintain the generator at proper operating condition.

Abstract: A method for sealing together the ends of concentrically arranged tubes of plastic material to make a double-walled tube which comprises inserting the assembled ends into a mold means conforming substantially in size to the outer periphery of the finished tube and applying heat to seal the tube ends together. Preferably, the tubes during heating are arranged concentrically with the end of one tube extending beyond the end of the other tube and if the materials of the two tubes have different melting points, the tube having the lower melting point extends slightly beyond the other tube. Preferably, a rod of material having good heat conductivity and a melting point higher than that of the plastic tubes is positioned inside the inner tube with its end slightly below the sealing area. The tube edges can be sealed together leaving an opening in the finished end or the finished end sealed completely over.

Abstract: Total apparatus includes extensible and retractable means for moving a load linearly between two or more spaced positions, the load having a fluid pressure operated motor, and means for delivering fluid from a pressure source to the motor at selected stages of extension. A cylinder having a head end and a shaft bearing end houses a piston rod and piston which are reciprocated by fluid pressure through a pair of actuation ports. A passage extends through the length of the piston rod and through the piston to a marginal wall. Fluid pressure power ports extending through the cylinder wall are spaced longitudinally at selected stations and the piston may be moved to any station, where its passage registers with the corresponding power port. Fluid from the pressure source may then be delivered through the piston and rod and by conduit means from the outer end of the rod to the motor on the load. There are no swivel joints or hoses in the fluid path to leak or deteriorate in use.

Abstract: A method for recovering a substantially impurity-free zinc oxide product from steel-making flue dust or a similar material which comprises leaching the flue dust with concentrated ammonia and carbon dioxide to dissolve zinc and unwanted impurities, cementing the leach filtrate with zinc to remove copper, cadmium, and lead impurities, conducting a steam distillation on the cementation filtrate to precipitate basic zinc carbonate, remove the ammonia and carbon dioxide, and iron impurities, and filtering to provide a residue of essentially basic zinc carbonate, sulfur, and chromium. This residue is then washed to remove soluble sulfates, dried, and calcined at high temperatures to break down the basic zinc carbonate into zinc oxide, water washed to remove chromium and the residue of the water wash dried to produce the desired impurity-free zinc oxide product. The two water washes may be combined into one step performed after the calcining step to remove both sulfur and chromium in one wash step.

Abstract: The construction incorporating the invention is applied to a utility vehicle such as an open vehicle provided with a fabric top, in which the windshield forms the upper portion of the forward upright of the door frame and portions of the top form the lintel and at least part of the rear upright. An elongate seal member is attached to the inner face of the side edge of the windshield extending throughout its vertical length and is provided with a rearwardly extending rib to sealingly engage a portion of the door. The door comprises a skeletal framework having a border structure conforming to the shape of the door frame and covered with fabric, the framework being made of resilient material. The door is hung on the existing hinge mounts and its lower portion lies in a vertical plane corresponding to that of the lower portion of the door frame. Bends are formed at intermediate points in the height of the framework so that the plane of the upper portion angles inwardly and upwardly.

Abstract: An improvement in a digitizer for use in computer drafting has been provided wherein a multiple wire connector located in both the X beam and Y beam is held in a taut and concealed condition within the respective beams for any position of the digitizer. An adjustable attachment is provided between the extrusions for the X and Y beam and the respective X and Y guide bars so that the guide bar can be aligned in a straight condition regardless of any warping of the beams during extrusion. A mechanical brake is also provided for fixing the position of the digitizer during use.

Abstract: The security system generally includes an elongate tubular member provided with a row of spaced apertures and a locking member movably mounted within the tubular member and formed with a series of pockets. Elongate flexible guard members with enlarged heads at each end are passed through a closed loop portion of the article and the heads are inserted through a selected pair of adjacent apertures and into the corresponding pockets. Relative movement of the tubular member and locking member reduce the effective exit area and all heads are locked in the tubular member simultaneously. An electrical circuit is connected with an alarm device and with the various pockets. When both heads of the guard member are in a selected pair of pockets or both removed, the circuit is complete. When one head is in a pocket and the other is not, or if a cable is cut by a shoplifter, the circuit is open.

Abstract: There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mating coaction with the outer end of a tie rod end whereby relative axial movement of the lock with respect to the tie rod end is prevented and the form structure is correspondingly held against movement toward or away from an opposite form structure.

Abstract: A money buckle is provided for securely and secretly retaining paper valuables, such as money. The buckle has an envelope-like configuration with a cavity for receiving the valuables and a safety flap foldable over the open end of the buckle and having an aperture engageable with an inwardly projecting hook which also engages a hole in a belt to which it is attached to secure the belt around the waist of the wearer. Thus, the safety flap is securely held in place between the back of the buckle and the belt when being worn. Also, the money buckle is accessible without removing the belt by merely releasing the hook from the hole in the belt and opening the flap.

Abstract: A snap lock modification which can be applied to various types of present day releasable ski bindings in which one component of the binding is connected to or forms a part of a ski boot and the other component is attached to the ski. One of the components includes latch means movable from inoperative position to latching position in engagement with a receiver formation on the other component. A resilient force unit is adjustable after the boot is in place to yieldingly urge the latch means into engaging position to retain the boot in position during normal maneuvers and to release the boot in response to excessive loads produced during a fall. The modification provides a detent trigger which restrains the action of the loaded force unit and which is actuatable upon placing the boot in skiing position to release and allow the latch means to snap into latching engagement with the receiver formation.

Abstract: A system for varying valve timing; i.e. the rotational angle of the crankshaft during which an intake or an exhaust valve of a cylinder of a reciprocating internal combustion engine is open which results in varying valve overlap, and for varying valve lift of such intake and exhaust valves. A desmodromic cam and cam follower convert rotation of a cam shaft to reciprocating rotation, or oscillation, of the cam follower. The reciprocating rotation of the cam follower is converted by the interaction of a secondary cylindrical cam, a cylindrical control ring, and a reciprocating member to linear motion of the reciprocating member which reciprocating member is operatively connected to a poppet valve. Timing and lift of the reciprocating member and valve are variable over predetermined limits as a function of engine rpm and load by rotation of the cylindrical control ring. Each valve train positively closes as well as opens its associated valve.

Abstract: A merchandise rack security device is provided which includes a plurality of elongated members depending from and slidable along a guide rail above articles of merchandise. In one embodiment, each member includes pivoted arms at the terminal end thereof which can be moved from a closed unlocked position in which they lie substantially along the axis of the elongate member and an open locked position in which they are substantially perpendicular to this axis. Each elongated member is extendable through a sleeve of an article, such as a garment hung on a hanger from a clothes rod, and by means of a control member located above the rod the arms can be simultaneously moved to the open position for each garment on the rack so that the garments cannot be removed therefrom. Similarly, the control means can be used to close the arms on the elongate members simultaneously so that any one of the garments can be removed from the garment rack.

Abstract: There is provided an improved clamping lock for tie rod ends in form structures for settable casting compositions, e.g., concrete casting forms, which lock is characterized by means for attaching it to the form structure, and a pair of jaws shaped for mating coaction with the outer end of a tie rod end whereby relative axial movement of the lock with respect to the tie rod end is prevented and the form structure is correspondingly held against movement toward or away from an opposite form structure.