Abstract: A side-release composition for use in facilitating the discharge of a frozen cargo of particulate mineral material comprises brine and a sufficient amount of polymeric ethylene oxide in the brine to form a gel upon exposure to temperatures of less than about 65.degree. F.

Abstract: A surface active agent is manufactured by reacting protein hydrolyzate material with a fatty acid ester in a mixture comprising an aprotic solvent and a basic catalyst.

Abstract: A unitary closure for a spice dispenser includes a spooning cap and a sifter cap which are provided with respective protuberances and niches which cooperate in an overcentering arrangement for positively locking either cap in the fully opened, upright condition and concomitantly preventing both caps from being raised at the same time.

Abstract: A disposable shipper-dispenser comprises telescopingly assemblage carton top and bottom members. The bottom member includes spaced sidewalls, an open top and an open front. The sidewalls have downwardly and forwardly inclined bag-handle-guide edge portions and a vertically extending intermediate edge portion defining a stop at the forward end of the inclined portion. Each of the sidewalls additionally includes a vertical front edge which is spaced forwardly from the stop edges to define a bag-handle spreader-hanger therebetween.

Abstract: A semi-pneumatic tire body for assembly to the rim of a wheel comprises spaced tread and root portions interconnected with spaced sidewalls to define an annular cavity. An annular load-bearing rib is connected to the root portion and extends radially toward the tread portion to be normally spaced apart from the tread portion in the unloaded state in order to establish communication between the internal chambers of the tire for free gaseous interchange and for free response of the tire to load forces.

Abstract: A molding press comprises a stationary platen or die fixed in a machine frame and a cooperating movable platen or die positionable toward and away from the stationary platen for operation through a molding cycle. Cam slot and follower guide means direct the movable platen through a clamshell movement; and a scissors mechanism is connected between the machine frame and the movable platen with a reversible electric motor providing rotational force to the lead screw of the scissors mechanism.

Abstract: A tamperproof closure for a bottle or other container having a neck portion with an external rib comprises a cap body of flexible, resilient material. This cap body includes an annular rim and a pair of skirts depending respectively from the inboard and outboard edges of this rim. The outboard skirt is provided with an internal rib that is adapted for lockable coaction with the bottle neck rib; and a circular top panel is connected to the inboard skirt to cooperate with the inboard skirt in defining a recess for receiving a cap-mounting tool. In accordance with the invention, the rim and its connection with the skirts cooperate to define a resilient hinge section.

Abstract: Dispensing apparatus for use in making a foam medical cast comprises a valved canister charged with foam-making chemicals, a rolled-up strip of bandage fabric, a yoke arrangement for holding and allowing rotation of the bandage roll and having a mount for securing the canister in rigid position, and a manually operable handle pivotally mounted to the yoke arrangement. The handle cooperates with the yoke arrangement in enabling the imposition of linear actuating force on the canister valve so that operation of the handle opens the valve, simultaneous transit of the yoke arrangement to unroll the bandage produces a medical cast preform of foam deposited on the outstretched bandage strip.

Abstract: A printed circuit board is manufactured by preparing a dielectric substrate with copper-clad surfaces, applying an etch-resist layer in a positive image of the circuit trace, etching away the exposed, non-circuit copper surfacing, and thereafter removing the etch-resist material.

Abstract: A hand-held calculating device for calculating Federal Income Taxes or the like includes substantially flat, elongate front and rear cover members and an insert card. Suitable structure is provided for joining the cover members with the card slidably insertable therebetween. The card bears a plurality of columns on both front and rear sides thereof, each column bearing a plurality of lines of tax figures or the like. A number of through apertures or windows are provided on both front and rear cover members for viewing selected lines and columns of figures on the insert card.

Abstract: A foam medical cast is formed by dispensing a bead of a pressurized polyurethane prepolymer composition onto a bandage strip making a cast preform. The dispensed prepolymer composition is allowed to expand and foam under ambient conditions, and the resultant preform is wrapped over an undergarment disposed on a human body part to be immobilized. The undergarment is premoistened and the wrapped cast preforms are moistened in order to activate the prepolymer composition. The cast is then allowed to cure to a rigid foam material.

Abstract: An SCR circuit is provided in a high-voltage supply for energizing a magnetron that is assembled in a microwave oven. The high-voltage supply circuit includes a voltage step-up transformer. This transformer is arranged with a low-voltage secondary winding which is connected across the heater-cathode electrode of the magnetron and a high-voltage secondary winding which is coupled in series with a capacitor. The series combination of the capacitor and the high-voltage secondary is connected across the cathode and anode electrodes of the magnetron; and importantly, the high-voltage SCR circuit includes a number of series-connected SCR's electrically in shunt of the magnetron. A triggering circuit gates the high-voltage SCR circuit to the current-conducting state during a selected phase portion of an applied AC potential, in order to control the amount of power being supplied to the magnetron.

Abstract: Wafers of silicon semiconductor material are stacked, bonded and severed to form a plurality of semiconductor diodes. One or more capacitor bodies are physically and electrically joined with these diodes, either by means of the capacitor bodies themselves or by means of an intermediate lead frame structure, in order to facilitate the handling and processing of the assembly as a unit.