Abstract: An elevating-type scraper for earth-moving purposes having an open fronted bowl which includes a pair of spaced vertical side sheets, back wall and floor, the bowl being supported by a pair of draft members extending from the tractor-supported draft frame. An apron extends transversely between the side sheets in the front portion of the bowl and carries a scraper blade. An elevator is rearwardly inclined over the apron for conveying loosened soil from the blade into the bowl. A strike-off member is hinged, in fixed position, to the front edge of the floor to the rear of the apron. The apron is pivoted to the bowl for forward swinging movement to actuate the striker and to create sizable discharge opening ahead of the floor for dumping of the material collected in the bowl, the discharged material being leveled smoothly over the entire bowl width.

Abstract: A load handling device is disclosed having an improved swing drive assembly including a pivotally mounted swing drive pinion biased against a segmented ring gear by an actuator with a guide roller adjacent the pinion engaging a guide flange concentric with the ring gear to limit the maximum tooth engagement between the pinion and ring gear and thereby provide essentially constant backlash on the pinion gear regardless of eccentricities or other irregularities in the ring gear.

Abstract: A method of defining the radiation beam for medical therapy in which the beam is shaped by an aperture in an easily formable, radiation absorbing member. The member is formed by compressing a mixture of granulated heavy metal, such as tungsten, with powdered pressure sensitive adhesive into a shape-retaining box. The member is cut to define the aperture desired, and preferably the cutting is done so that the aperture walls parallel the beam that will pass therethrough.

Abstract: An electromagnetic device made of flat components, which requires no resetting spring for the armature which is high in efficiency and small in size. The device comprises first and second yokes in contact respectively with magnetic pole surfaces of a permanent magnet and presenting pole faces opposed to each other. A pivoted armature, swingable between the pole faces on first and second yokes, by reason of the permanent magnetism, normally engages the pole face on the second yoke. A coil is wound around the armature, with current in the coil serving to overcome the permanent magnetism so that the armature moves to the opposite position against the pole face on the yoke. The device can be of latch type or single stable type by making the armature or either one of the yokes of a semihard magnetic material which is low in coercive force and high in residual magnetic flux density.

Abstract: A continuous method is provided for reclaiming chromium compounds which heretofore were discharged as industrial waste from chrome liquor tanneries. The method includes continuous agitation of chrome sludge along with continuous filtration and movement through successive filtering zones. This method is both economically attractive and vital from an ecological standpoint. The reclaimed chromium values are in condition for reconstitution into fresh chrome-tanning liquors.

Abstract: Shaped refractory articles, especially turbine casing liners, are formed of a refractory fibre/watersoluble binder composition, the hardness, strength and density of which do not vary across the bulk composition.

Abstract: A method of fashioning a lead-acid storage battery capable of being stored after completing of the battery processing and thereafter activated by the addition of electrolyte includes adding conditioning quantities of a treating agent affording certain metallic sulfates to the formation electrolyte, a rinse electrolyte or to a separate solution to obviate the necessity for removing, as by drying, all or substantially all of the electrolytes used to process the battery. Sufficient electrolyte is removed simply by draining, and the resulting battery can be stored for extended periods of time without significantly adversely affecting the performance of the activated battery.

Abstract: Webs having a desirable combination of strength and fabric-like characteristics can be prepared by ultrasonically induced fusion of a web of unbonded, molecularly oriented thermoplastic fibers at intermittent regions and in a manner such that the intensity of fusion in the individual intermittent regions diminishes from the center of the regions to their edges. On subsequently stretching, those areas of the regions which are most intensively fused break apart to form the perforations in the web.

Abstract: Fabric-like nonwoven, elastic materials of substantially continuous and randomly deposited, molecularly oriented filaments of a thermoplastic polymer are disclosed. Elasticity is achieved by causing the filaments to buckle either between spot bond areas disposed through out the material or as a result of a microcreping action and thereafter heat setting the filaments in their buckled configuration to provide a memory therefor, so that, on subsequent stretching and release of strain, the filaments will return to their buckled configuration. High bulk elastic laminates of the materials can also be prepared with ply attachment preferably being achieved by sonic bonding techniques.

Abstract: A method of forming an airlaid web at high speeds, the web being suitable for tissue and toweling applications, includes air forming a flimsy continuum on to a foraminous surface, wetting the continuum in a prescribed fashion, employing the wetted surface of the continuum to achieve stripping from the foraminous surface and transfer to a transfer surface and bonding the continuum to yield a coherent web while the wetted continuum remains adhered to the transfer surface.

Abstract: A grease filtering method and apparatus for kitchen ventilating systems which is readily interchangeable with conventional mesh-type filters. The filter has substantially the same external dimensions as a mesh-type filter and produces substantially the same pressure drop as a mesh-type filter, so that it can be readily interchanged with the mesh-type filter without changing the requirements on the blower which draws the exhaust stream through the ventilating system. The filter uses a series of baffles to direct the exhaust stream in a tortuous path as it passes through the filter, thereby removing the condensable greases and oils by depositing them on the internal surfaces of the filter by centrifugal and ram action. The filter is completely self draining, since the extracted liquids continuously run down over the interior surfaces of the filter and then drain out of the filter through a plurality of drain holes provided along the front edge of the bottom wall.

Abstract: A veneer stacker for receiving sheets of veneer at a relatively high rate of speed and assembling them into a uniform stack. The stacker utilizes the velocity of the veneer sheet, acting against a series of curved guide shoes, for supporting the sheet by means of centrifugal force, while guiding it to a stacking position. As the sheet approaches the stacking position, it initiates a momentary vacuum braking action adapted to draw the sheet into intimate engagement with the guide shoes, stopping the sheet, thereby removing its supporting force. Continuously rotating vacuum drums engage the lead edge of the falling sheet for positioning it against an aligning forward stop, and correcting skew of the sheet as an incident to such positioning.

Abstract: A device for cleaning a gramophone record while the record is being played comprises an endless belt arranged to carry an electrostatic charge and mounted so as to extend generally radially of the record, with a lower run of the belt in contact with the record surface. During rotation of the record the belt gathers and removes dust and other particles from the record surface, the particles being retained on the belt by the electrostatic charge. The belt is driven by rotation of the record to transport the particles to a position remote from the record surface, the particles being removed from the belt at this position.

Abstract: A circuit for detecting and indicating the actual state of charge of a storage battery in response to signals sampled from various points in the circuit powered by the battery. Such circuit is adapted to calculate the open circuit voltage of the battery, it being realized that the open circuit voltage is directly proportional to the battery state of charge. A function generator is constructed to simulate the characteristic curve of the battery relating the internal resistance to the percent charge. Feedback is provided from the output of the indicating circuitry to the bias point of the function generator for causing the generator to produce a signal related to the actual internal resistance of the battery. The circuit is adapted to provide a reliable indication of the amount of usable energy remaining in the battery, irrespective of the conditions under which the battery was discharged.

Abstract: A system of remote supervising and controlling many console units or equipments associated therewith with a central supervision and control unit. Console units are connected in parallel to the central unit through a single output line comprising a group of wires from the central unit, series signals of clock, data and other pulses are transmitted from the central unit to the respective console units, and signals informing whether the state in the respective console units is normal or not and results of detections of the respective equipments are returned from the console units to the central unit through a signal line in the group of wires.

Abstract: A turbine type air motor including a rotor and driven spindle having automatic speed regulation. The spindle and rotor have cooperating ports to control the flow of air to the rotor, and the spindle has provision for limited twisting movement within the rotor for moving the ports into and out of register. A biasing spring interposed between the spindle and rotor urges the ports normally out of register when the tool is lightly loaded. An increase in the load imposed upon the spindle causes the spindle to retreat relative to the rotor and against the force of the spring to bring the ports into register, thereby to increase the flow of air so that the torque developed by the rotor increases in step with the torque loading imposed on the spindle to maintain speed. In the preferred embodiment the spindle is of hollow construction and compressed air is fed axially into the hollow for transmission into the rotor through radial ports.

Abstract: A master slide for supporting the leading edge portion of a drape which includes a horizontally extending arm having vertical holes for receiving in upright position a forwardly projecting drapery hook at the front and a laterally projecting drapery hook at the tip. Special abutments are provided at the tip to hold the hook positively in its laterally extending direction free of swiveling action so that the leading edge portion of the drape, hooked in stretched condition on the hooks, closely conforms to the front surface of the arm and extends to a point beyond the tip. In the preferred embodiment, the special tip construction is used in both right hand and left hand master slides, forming an overlapping set, with the conformation of the drapes to the arms serving to hold the leading edge portions of the drapes under positive control to preclude any rubbing of the drapery material as the slides move in and out of their overlapping relation.

Abstract: A protective mounting plate arrangement for removably supporting an outboard motor on a boat transom. One protective plate mounted on the rear side of the transom is formed with a pair of recessed vertical grooves for receiving and guiding arms of a motor clamp into precise predetermined position. Secured to the forward side of the transom are plates which define a pair of recesses for receiving the screw heads of the motor clamp. Such mounting plate arrangement protects the transom from scarring and damage during mounting of the motor and precisely orients and positively retains the motor in its desired operating position.

Abstract: A friction clutch for a power driven element such as a rotary blade in which the element is seated on a drive shaft having a flange and an adjacent thread having an associated nut. Adjacent the driven element is a washer assembly which includes a rubber washer and a Bellville washer having its concave side faced toward the rubber washer so as to develop frictional clutching force between the shaft and the power driven element as the nut is tightened, the concavity of the Bellville washer serving to confine the rubber washer against radial expansion and the rubber washer, by its confinement, serving to prevent collapse of the Bellville washer upon severe tightening of the nut.

Abstract: A corrugated microwave horn or the like is constructed by forming a plurality of thin, parallel, annular plates of conductive metal with a multiplicity of integral tabs spaced around the periphery of each plate. A thin flat sheet of flexible conductive metal is formed with a multiplicity of spaced parallel slots arranged in a multiplicity of longitudinal columns and transverse rows. One of the tabs on each of the annular plates is fitted through the slots in one of the longitudinal columns, and a wire is inserted through apertures in the tabs to lock the slotted sheet to the annular plates. The slotted sheet is then rolled around the peripheries of the plates to fit successive tabs through the successive longitudinal columns of slots, and additional wires are inserted through the apertures in successive tabs to lock the sheet to successive portions of the peripheries of the plates.