Abstract: A hydrometallurgical process for the treatment of complex silver-bearing sulfide ores and concentrates that recovers substantially all silver, lead, antimony, zinc, copper and sulfur, along with the chemical reagents utilized during the process. Finely ground ores and concentrates are leached under heat and pressure with water, sulfuric acid, nitric acid, oxygen, and a catalyst, and are further treated to recover silver in the form of silver chloride; iron in the form of iron hydroxide; copper and all traces of soluble toxic metals as sulfides; zinc as zinc ammonium sulfate and specifically nitric acid, sulfuric acid, oxygen, ammonia, and ammonium compounds as valuable fertilizer products.

Abstract: An electrical socket with a safety feature that prevents accidental shock due to insertion of an object or objects other than a typical electrical plug configuration. The socket ‘hot’ side conductor is not energized if an object is inserted into any single plug tang location, or if multiple objects are inserted independently, in any combination, of the socket plug tang locations.

Abstract: A fan blade having a hollow housing allowing air to enter into the front or rear opening of the fan blade and directed to exit out the side opening of the fan blade after having passed through a filter. Use of this fan blade is a method for removing particulates from the air.

Abstract: A mobile intra-operative microscopic diagnosis laboratory capable of analyzing fresh tissue specimens and providing intra-operative consultation within 20 minutes is described. The mobile laboratory is preferably a van and contains a cryostat for freezing the fresh tissue specimens and a means for cutting the specimens. In addition, it also contains the means for reading the slides to make microscopic diagnosis and a means for handling for fresh tissue and a means for indicating various locations in the specimen, preferably by inking them. It preferably contains a stainer for staining the samples and an intercom for communicating the microscopic diagnosis back to the operating room.

Abstract: A wood splitting attachment primarily for use with a skid steer loader that allows the wood splitter to be operated in the horizontal or vertical mode, can be easily connected to a skid steer loader and with a wedge extractor that allows the splitting wedge to be easily extracted from the wood is the subject of the present invention.

Abstract: An economical step shelter is disclosed for use with mobile homes, modular homes, or other homes not incorporating basements. The step shelter is manufactured by modifying the existing molds for making steps and adding an opening large enough for a human being to enter and exit and a means for closing said opening, typically a steel door. The step shelter is economical and efficient and practical for use with existing or new homes.

Abstract: A decorative simulated automobile hood light is disclosed. The hood light contains a light source with light passing through the front and the rear of the enclosure for the light source, which is a simulated automobile hood. The hood can be raised or lowered, permitting access to the light source and simulating the opening and closing of an automobile hood.

Abstract: Embodiments of a new woodpecker feeder are disclosed, each effectively preventing undesirable pest birds and squirrels from feeding yet allowing woodpeckers to feed by providing slotted access to the feed that is 6-12 mm. wide and more than 50 mm. in length and further by including a hard textured coating to dissuade squirrels from feeding. The method of feeding woodpeckers by restricting access to the food source based on the bill size and tongue length of the woodpecker as opposed to the pest birds is also disclosed.

Abstract: The present invention is an ultrasonic cylinder arm machine which includes a combination of the use of ultrasonics with a cylindrical arm that extends out from the ultrasonic unit and back toward the horn of the ultrasonic unit whereby the machine is especially suited for the manufacture of tube shaped or cylindrical shaped articles such as trouser legs and long sleeved shirt sleeves.

Abstract: This invention is an apparatus and process for the reinforcing of concrete, wood, or steel columns, beams, or structures. The apparatus includes pre-made reinforcing layers constructed of engineering materials having a high tensile strength and a high modulus that are attached, via an adhesive, or fitted to the element in question to create a reinforcing shell exoskeleton thus increasing the column's compressive, shear, bending, ductility, and/or seismic load carrying capacity.

Abstract: A low pressure relief valve made of elastomeric material is capable of relieving pressure in fixed and movable systems and is both economical and reliable.

Abstract: Antimony oxo-metalate complexes having anti-viral activity are disclosed. The disclosed complexes are organic derivatives of tungstoantimonate or molybdoantimonate.

Abstract: A combination seat cushion and carrying bag having two opposed padded compartments and a pocket for storing articles in between. The articles are cushioned by the padded compartment when the article is used as a seat cushion.

Abstract: A gas pressure regulator useful in controlling low pressures in the range of 0 to 100 psig is economical, effective and efficient and can be used to control fixed or variable outlet pressures.

Abstract: An apparatus, and process for insulating a splice with a heat shrinkable tube. The spliced wires and tube are transferred inside an oven by moving means, and after the tube is heat shrunk in the oven the wire assembly is then removed from the oven and automatically ejected.

Abstract: High temperature resistant pressboard having a desirable combination of compression set values and oil absorption is prepared by a process whereby a low density pressboard is first prepared by forming a wet lap of multiple layers of a waterleaf containing 50-95% by weight water and pressing the wet lap at 100-200.degree. C. under a pressure of 10-60 kg/cm.sup.2, drying, ultimately at 270.degree.-320.degree. C. until substantially no further moisture is evolved and finally pressing at 270.degree.-320.degree. C. under a pressure of 8-350 kg/cm.sup.2 and optionally cooling under restraint.