Abstract: A hinged binder assembly for a plurality of stacked planar plates or cards 11 on which rug samples 10 are mounted. Each card is laterally inserted and held at one end in a generally rectangular rail member 12, 27 having circular passages 23, 24; 33, 34 in respective rear and front walls thereof. U-shaped stirrups 19, 29 are inserted into and hingedly connect the rail members together from both sides such that one arm of each stirrup extends into a rear wall passage of one rail member while its opposite arm extends into a front wall passage of the rail member lying immediately above in the binder "closed" position. The connecting webs 20, 30 of each stirrup thus extend at an inclined angle between adjacent rail members. With this arrangement the sample bearing cards can be turned over one at a time in the manner of book pages, or pulled out in a translational manner into a partially overlapping stepped configuration wherein portions of all samples are exposed for viewing.

Abstract: A rail strip and locking device has a unitary sheet-form device formed with integral tabs which may be punched out and hingedly folded back upon a correspondingly sized stationary tab, thereby to form a reinforced double thickness or triple thickness coupling for insertion into a price rail. Removable items such as pads of coupons or containers of loose cards may be hung from the locking device engaging the rail.

Abstract: A press for compressing powdery material in which a single roller is rotatably mounted eccentrically within a perforated annular mould. This permits a single roller of relatively large diameter to be employed to apply pressure to the powdery material.

Abstract: An edge forming tool is pressed into a thermoplastic sheet which is supported on an anvil or counter tool. The edge forming tool is maintained at a temperature below the melting temperature of the thermoplastic sheet and a high frequency electric field is established between the edge forming tool and the counter tool. The high frequency electric field softens the thermoplastic sheet which is deformed by the edge forming tool. Thereafter, the softened and deformed portions of the thermoplastic sheet are allowed to cool and re-harden before the sheet is folded to form a bend therein.

Abstract: Power plant boiler fuel demand is transmitted as a coal feeder speed demand to a coal pulverizer control. A speed controller operates the feeder in accordance with the speed demand, and a position controller for a hot coal transport air damper positions the hot air damper to hold the mill outlet temperature to a setpoint value and to increase or decrease damper position in accordance with a feedforward signal representing the feeding speed demand. A position controller for a cold air damper regulates the total primary air flow to a value needed for safe and smooth transport of the pulverized coal to the boiler burners, and it accordingly acts as a process trim on the feedforward control applied by the hot damper controller.

Abstract: An impact scrubber for removing coating materials from the surfaces of particulate matter such as foundry sand and the like comprises a lift tube open adjacent upper and lower ends for containing a high velocity fluidized stream of said particulate matter. A fluid injector is mounted adjacent the lower end of the lift tube for moving the particulate matter into the lift tube to form an upwardly flowing, high velocity turbulent fluidized stream. An adjustable inlet valve is provided adjacent the fluid injector for regulating the flow of sand into the high velocity stream of fluid moving into the lift tube. A target is spaced above the open upper end of the lift tube providing an impact area for receiving the flow of high velocity fluidized particulate matter which impacts against the target. The coating material is loosened from the sand grains by the impact at the target and during the turbulent flow.

Abstract: The flow of preheated and ambient air to a processor, such as a coal pulverizer, are controlled in a manner whereby the preheated air flow will be varied as a function of pulverizer discharge temperature air while "cold" ambient air flow will be varied as a function of pulverizer inlet air mass flow rate. Flow error signals are caused to vary as a function of temperature error to enhance system response to temperature errors, and flow error will be caused to take precedence over temperature error should pulverizer inlet flow fall below a predetermined minimum.

Abstract: A date reminder calendar includes a plurality of stacked sheets each representing a different date. Each of the sheets is provided with an elongate marking area which is adapted to be marked in a manner readily distinguishable from similar areas which have not been marked. Each sheet is formed with a plurality of elongate parallel openings or slots which are successively smaller in relation to the marking area and each of which is aligned with another marking area on another sheet. By stepping or displacing the marking areas from each other on successive sheets of a group of sheets to avoid overlap, a marked area becomes larger and more prominent with the removal of each successive sheet to thereby increasingly signify the imminency of the date and the reminder associated with the marked area.

Abstract: In a molding apparatus employing opposed endless belt conveyors to mold a non-rigid material into a rigid material, the problem of one conveyor being driven at a slightly greater speed than the other conveyor to produce harmful shear stresses within the molded product is avoided by driving both conveyors at generally the same speed during start-up until the rigid product extending between the two conveyors will tend to drive the slower conveyor at the speed of the faster conveyor, at which point the drive for the slower conveyor will be disconnected. One-way clutches may be placed in the drive of both conveyors so that it does not matter which conveyor is slower, or a one-way clutch may be placed in the drive of only one conveyor and the other conveyor constructed so that it will inherently tend to run faster than the one conveyor, or a selectively releasable coupling, such as a clutch, may be placed in the drive of one conveyor so that the drive of the one conveyor may be disconnected.

Abstract: A molding core, consisting of a plurality of flexible metal plates, for the manufacture of cylindrical hollow bodies or wound sections of fiber-reinforced synthetic resin. The metal plates are fixed to support members which in turn are connected to frames. To release the hollow bodies or wound sections, two diametrically opposed metal plates can be tilted inward and the frames can be moved toward one another by means of a common drive. It is possible to assemble a plurality of hollow bodies or wound sections to form vessels of large volume.

Abstract: A cover sheet is provided for a newspaper having a plurality of adjacent sheets of newsprint of equal width and length with a vertical fold and a horizontal fold intersecting the vertical fold. The cover sheet is equal in length to the adjacent sheets and slightly more than one-half the width of the adjacent sheets. A back portion of the cover sheet overlies and coincides completely with the back of the newspaper. A first fold in the cover sheet coincides with the vertical fold to form a front portion substantially narrower than the front portion of the newspaper. The front portion overlies a narrow band of the front of the newspaper along the vertical fold. A second fold in the cover sheet intersects the first fold and coincides with the horizontal fold. Printed material on the cover sheet is arranged transverse to the printed material on the newspaper.

Abstract: A street address locating aid includes two printed paper discs. Street addresses and cross streets are printed in concentric circles on both sides of each disc. A printed paper carrier having first and second essentially parallel sheets is mounted on opposite sides of the two discs. Each of the two sheets of the carrier include "street address" and "location near" apertures through which a particular street address and the corresponding cross street are exposed. By rotating the discs, different street addresses can be selected and the cross street near that address is displayed. The two discs are mounted so that they are partially overlapping within the carrier but so that neither disc obstructs the view of the street address and location near apertures associated with the other disc.

Abstract: An invalidating marking appears on photoreproductions of security documents such as checks, bonds, stock certificates, lottery tickets, and currency. The invalidating marking is disguised on the original by use of disguising markings and printing the invalidating mark and the background with different line screen frequencies.

Abstract: A device for the manufacture of spherical metallic powder comprising a vertical cylinder-conical vessel having in an upper part, means for introduction of a stream of liquid metal and for atomizing said stream using jets of gas and, in a lower part, gas inlet means for producing upwardly inclined tangential jets of gas for generating vortices along an ascending spiral centered on the axis of the vessel. The device also comprises a gas outlet connected to a cyclone dust remover whereby metal powder carried by the gas is separated from the gas, the gas outlet of the cyclone dust remover being connected to the gas inlet means and the dust outlet of the cyclone dust remover being connected to a duct opening into the vessel in the immediate vicinity of the jets produced by the gas inlet means.

Abstract: An extrusion apparatus for the continuous molding of a concentrically formed coating of plastic material around an elongated core member of wire-like body. The extrusion apparatus comprises a guide member for the elongated core member, which is mechanically fixed in coaxial alignment with the extrusion molding die.

Abstract: An improved sheet binding device for fastening together a plurality of sheets having pre-punched, spaced-apart openings, comprises an elongated backing member extending between such spaced-apart openings; and, attached to the backing member at spaced-apart positions corresponding to the spacing between such openings, a plurality of fastening elements, each comprising a connecting portion for insertion into such openings, and at the end of said connecting portion remote from said backing member, locking means movable between (1) a collapsed position in which the fastening element is insertable into such opening, and (2) an expanded position in which the locking means is effective to preclude removal of such sheets from said fastening element. This structure can be integrally molded from plastic material. In a preferred embodiment, the structure is substantially self-locking. Single-hole embodiments suitable as replacements for conventional brass head fasteners are also disclosed.

Abstract: A solar panel comprising first and second generally parallel, spaced sheets of plastic material and a corrugated sheet of plastic material sandwiched between and bonded to the first and second sheets, the spacing between adjacent corrugations in the corrugated sheet being considerably less than 50% of the distance between the first and second sheets and no greater than about 1/2 inch, the plastic material being light transmitting and characterized by resistance to ultraviolet deterioration.

Abstract: A heavy duty agitator ball mill for continuous grinding and dispersion of material suspended in a liquid has an upright rotor made of aligned rotor ring elements, mounted for rotation within a stator which preferably is also made up of aligned stator ring elements. Rotor and stator form a grinding chamber between them which holds a charge of grinding balls. Agitator members extend into the grinding chamber both from the rotor and from the stator. Both rotor and stator have cooling channels for flow of coolant, bounded in part by ribs formed on rotor and stator and hence promoting heat conduction. Working surfaces are of hard wearing materials as is made possible by the construction. The ring elements are readily replaceable, as are hard inserts of the agitator members.

Abstract: A spray spinning nozzle for producing a substantially continuous filament from a molten synthetic resinous material includes a nozzle with a removable orifice from which a filament of molten material is emitted and a gas attenuation assembly which is laterally removable from the nozzle. The attenuation assembly includes at least three gas jets spaced about and radially close to the nozzle axis for emitting high velocity jets which converge upon and contact the filament at a point along the axis in front of the orifice. Drag forces produced by the gas jets attenuate the filament to a thin diameter.

Abstract: Continuous superimposed webs are interlocked together along opposite marginal edges by sets of superimposed tongues provided in the webs which interengage to effect an interlock. Each set includes at least a pair of superimposed tongues disposed along a line forming an angle with an adjacent marginal edge so that one of the tongues is staggered relative to the other in the direction of feed of the webs through a web processing machine. Thus, during separation of the plies in the direction of feed the forwardmost superimposed tongues are separated before the rearwardmost tongues thereby avoiding simultaneous separation of the tongues and decreasing the resistance offered by the tongues upon ply separation.