Abstract: A device for testing the quality of foundry green sand is described including a delivery structure with an invertible riddle, a testing structure with a compaction plunger, and sensors for measuring the compaction and moisture content of the sample, another testing structure with a sensor for measuring the green compressive strength of the sample, and a specimen tube mounted on carriage which traverses between delivery and testing structures. A strike off device levels the sample within the specimen tube. The floor of the specimen tube can be raised to eject the sample after testing and the same strike off device cleans the raised floor. A control panel activates and coordinates the operation of the device. A data processor analyzes the information yielded by the testing apparatus and automatically initiates the correct addition of any additives as needed.

Abstract: A stubout bar having notches instead of holes for holding plastic or metal pipes.

Abstract: A firefighting roof ladder accessory that is designed to be supported between two roof ladders. The accessory comprises a beam, having two foot supprot surfaces that are perpendicular to each other, and end boxes each extending over a ladder rail and provided at its outer edge with hooks that go over the rungs of the roof ladders.

Abstract: A manual stock stop is diclosed including a track assembly and a sliding stop assembly. A cable-activated electromechanical position transducer sends an electrical signal corresponding to the position of a stop bar mounted on the top assembly to a monitor/control unit which displays the position of the stop bar. A fine adjustment mechanism in the stop assembly allows for precise positioning of the stop bar. An automatic stock stop is also disclosed including a track and sliding carriage assembly. A motorized screw mechanism mounted on the track moves a carriage a limited distance along the track. The ends of flippers mounted on the carriage can be extended beyond an edge of the carriage to actually stop the stock. A guide and a device for performing a machine operation on the stock may also be mounted on the track. A computer control unit activates and coordinates the various functions of the stock stop.

Abstract: A self-contained electrical warning device for attachment to a wood furnace. Includes a heat sensitive switch, a momentary test switch, a set of batteries, and an alarm. When the furnace reaches a dangerously high temperature, the heat sensitive switch is tripped and the alarm sounds warning the person using the furnace.

Abstract: A pallet cover for protecting the upper surfaces of a load resting upon a pallet. The pallet cover is made of multiple layers that are laminated together. There are no staples or like materials used. The pallet cover is a one piece unit comprised of a horizontal upper surface, a bend, and for generally vertical flanges. The flanges are connected to the upper surface at the bend. The flanges are independently flexible along the bend.

Abstract: A knob for the lid of a cooking vessel. The knob being made of heat sensitive material and having a metal cap covering the portion of the knob that is exposed on the underside of the cooking vessel lid.

Abstract: An angle measuring device with a digital read-out mounted in a housing with two sharp parallel feet and a bisecting spring loaded needle, the housing having forty five degree, vertical and horizontal surfaces, useful for setting doctor blades and other surfaces to proper angles.

Abstract: A shoe cover comprises a pouch which is closed with the exception of an opening at the area of the shoe heel. The pouch has two lobes, one covering the outside of the shoe and one covering the inside of the shoe when the shoe cover is installed and the shoe is worn, to provide a swift and easy change in shoe appearance without the necessity of carrying multiple pairs of shoes, and top provide protection for the shoes, or against contamination.

Abstract: A flexible top opening holster for semi-automatic and other pistols which prevents or inhibits the unauthorized removal of the pistol from the holster by means of a restraining device contained within the holster.

Abstract: A tong-like device which contains a bottom strip with an opening through which a fishing jig eye can be inserted and a top strip which has a tab with a point which can be pressed down so that the top tab passes behind the bottom tab and the point passes through the jig eye removing any materials therein. The end of the device where the upper and lower strips meet may be coated with plastic.

Abstract: An air cleaner (10) comprises a partition (12) mounting a number of filter elements (20) between a dirty air inlet (14) and a clean air outlet (16). The partition (12) is provided with means for supplying clean air to the mountings of the filter elements (20) at a pressure greater than that of dirty air to be filtered so as to prevent the escape of dirty air.Such an air cleaner is suitable for extracting dust from the atmosphere in factories, or silos to which material such as milk powder or cement is fed in a fluidized state from a tanker.

Abstract: A knob for a cooking vessel is a whistle which gives an audible signal that cooking temperature has been reached, and has a valve slide assembly including a separate leaf spring for shutting off the whistle. Inside and outside knob parts incorporate halves of a resonance chamber which makes the knob extremely simple to mold, assemble, clean, and disassemble. The inner knob is comprised of two parts: a top having a whistle orifice and a base which has two arc segments portions which extend through the lid of a cooking vessel and allow the top to be snapped into place abutting the cooking vessel lid. Because the inner knob is comprised of two parts in this fashion, the central opening in the cooking vessel top can be made small enough so that it will be difficult for a user to catch his or her fingers in the opening when the knob is dissasembled for cleaning. The valve slide rests in guides and is overlaid by a knob cover.

Abstract: Articulated decline belt conveyor in which the elbow is defined by a pair of rollers respectively attached to the joined sections of the frame for dividing the decline angle into two smaller parts. The belt is transversely troughed over much of its length, but is flattened by the pair of rollers defining the elbow, thereby permitting a more substantial decline angle than if the belt was transversely troughed while traversing the elbow. Improved structures for supporting the conveyor frame are also disclosed.

Abstract: Blind fastener of the type having a tubular outer member with a head at one end and a conical portion at the other end, the conical portion having its apex within the outer member. The conical portion is expanded radially to form a second head on the fastener for securing it in place. The member selected for expanding the conical portion comprises a spring pin. In some embodiments novel apex contacting means are interposed between the spring pin and the apex of the conical portion. The apex contacting means is either formed integrally with one end of the spring pin or as a separate piece disposed between the spring pin and the apex of the conical portion. One important advantage of using a spring pin as the setting means is that its resilience retains it within the outer member despite vibrations, temperature changes, or other conditions which might tend to dislodge the setting means. Other advantages are lighter weight and greater strength at no more cost than previous solid setting pins.

Abstract: A device for cutting string cheese at a precise length as the string cheese is extruded. The device is comprised of a trip lever, a pivoting counterweight attached to the trip lever, a support bracket having an upper and lower stop to limit the movement of the pivoting counterweight, a plastic rod connected to the pressure release valve, the pressure release valve which operates the valve actuator when the pressure release valve is displaced from its rest position by the counterweight deflecting the plastic rod as the counterweight pivots, a valve actuator connected to an air supply, a valve connected to the valve actuator by tubing, a pneumatic cylinder connected to a valve by tubing and having a piston, and a knife attached to the piston of the pneumatic cylinder. When the desired length of cheese is reached, the weight of cheese on the trip lever activates the device causing the knife to intersect the path of the cheese and cut it.