A removable and reusable filter attachment system is disclosed. A filter medium is fixed to, and surrounded by, a filter frame having a coaxial, longitudinally extending, annular rim. The rim engages an annular groove which surrounds the opening of a filter housing. The annular groove contains a fusible material and a heating mechanism for melting the fusible material. Upon resolidifying, the fusible material forms a hermetic bond with the rim and groove. Remelting allows detachment and replacement of the filter frame.

A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode is described. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be merely air) between the inner and outer electrodes. The discharge provides a low impedance path between a high voltage charge placed on the outer electrode and a load (which may be a high power laser) coupled to the inner electrode. For high repetition rate the gas between the inner and outer electrodes may be continuously exchanged or refreshed under pressure.

An improved downhole steam injector has an angled water orifice to swirl the water through the device for improved heat transfer before it is converted to steam. The injector also has a sloped diameter reduction in the steam chamber to throw water that collects along the side of the chamber during slant drilling into the flame for conversion to steam. In addition, the output of the flame chamber is beveled to reduce hot spots and increase efficiency, and the fuel-oxidant inputs are arranged to minimize coking.

The present invention is directed to a fuel-air control system for a combustor in which coal-derived gas of varying heat content is used. To maintain the temperature in the combustor at an essentially constant value the fuel-to-air ratio is adjusted by using a temperature actuated variable pressure regulator in the gas feed line to compensate for the variability of the heat content of the gas. The velocity of the products of combustion is maintained at an essentially constant flow rate by controlling the mass flow of the air and fuel through linked valves on the gas and air feed lines.

Patent for an improved burglar alarm to attach to a door or window with a "simple locking device for the hammer" so that the alarm can be transported and reinstalled safely (lines 15-16).

Patent for a combined stove and steam cooker for which water can be added without opening the stove/cooker.

Patent for a broadcast seeder designed to "cultivate, plant, and subsequently roll or cover the seed, the elements for accomplishing the same being combined in a single device simply constructed" (lines 10-13).

Patent for a new and improved board game. This design "consists of a game-board marked out to represent a baseball field and provided with a series of marked depressions and a number of baffle-pins, guideways, or gutters being arranged in either side of the board, and a back-stop being arranged at the upper end of the board, provision being made for imparting a proper inclination to the board and for the propulsion of marbles through the gutters or troughs" (lines 13-22).

Patent for an animal brander with interchangeable characters and a holder for the characters.

Patent for a new and improved coupling for railroad cars. This design "has for its object the production of a coupling that can be easily and readily applied to the common construction of draw-heads for cars, in which the ordinary coupling link and pin are used, while combining simplicity and economy in construction and effectiveness in operation" (lines 13-19).

Patent for the automation of compression and creation of hay bales.

Patent for a vibrating churn design meant to improve the process of churning liquids.

Patent for an improved lemon and lime squeezer that can divide the lemon and lime into two halves and squeeze the halves in succession, or one half be left un-squeezed.

Patent for a stretching screw, turnbuckle. It adjusts the tension of cables and was used in early aeroplanes (airplanes).

Patent for a well-screen formed of perforated pipes for oil production to filter sand and detritus, including illustrations.

Patent for tool "which may be used for various purposes in connnection with wire fences" (lines 16-17) including an illustration.

Patent for an adaptation of burners to use semi-viscous liquids "such as, crude oil, coal or gas tar, and the like" (pg 1, 7-8).

Patent for "an organized machine adapted to compress charges of cotton-seed meal into cakes of sufficient solidity to bear handling and removing to the press which expresses the oil from the meal, and to carry said cakes from the point where they are compressed to a point or points in convenient proximity to the press or presses which express the meal" (lines 8-16).

Patent for a "machine for purifying the middlings in the process of making flour that will free them more completely from impurities that has heretofore been done, and to construct the parts of the machine so that air-blasts will be completely under control" (lines 8-13) including illustrations.

Patent for stronger, lighter construction of baskets frequently used in shipping fruit, although the improvement "may be used for any and all purposes of which it is capable" (lines 13-15).

Patent for "a machine for exterminating bed-bugs by steam." (Lines 11-12) Includes instructions and illustrations.

Patent for a new and useful seed-planter for corns and cottons, including instructions and illustrations.

Patent for Pneumatic Horse Collar. This collar's inner pockets contain air pockets, that will be more comfortable and the outer walls will be more flexible, allowing the animal more comfort.

Patent for an improvement to drive shafts used in automobiles, other motor vehicles, and machine tools that convert reciprocating into rotary motion, including instructions and illustrations.