UNT Libraries Government Documents Department - 18,569 Matching Results

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Acetylene Gas Generator
Patent for "a new and useful acetylene-gas generator" (lines 5-6), including illustrations and instructions.
Acetylene-Gas Generator.
Patent for improving an Acetylene-Gas Generator. To eliminate a check valve between the generator and the gasometer, this will purify the gas and keep siphoning off of water from occurring.
Acetylene Gas Generator
Patent for an acetylene gas generator. illustration included.
Acetylene Gas Generator
Patent for an acetylene gas generator. Illustrations included.
Acetylene Gas Generator.
Patent for a new and improved acetylene gas generating machine, including instructions and illustrations.
Acetylene-Gas Generator.
Patent for a new and improved acetylene gas generator, including instructions and illustrations.
Acetylene-Gas Generator.
Patent for a new and useful acetylene gas generator, including instructions and illustrations.
Acetylene-Gas Generator.
Patent for certain new an useful improvements in acetylene gas apparatus, including instructions and illustrations.
Acetylene-Gas Generator
Patent for an improved automatic acetylene-gas generator which allows the carbid vessel to recharge with carbid without permitting the escape of gas, and also to simplify the construction of the generator.
Acetylene-Gas Generator.
Patent for certain new and useful improvements in acetylene gas generators, including instructions and illustrations.
Acetylene-Gas Generator
Patent for an acetylene-gas generator. Illustrations included.
Acetylene-Gas Generator.
Patent for an acetylene gas generator, which claims to improve upon this device by simplifying the "means for feeding carbid to the water," (line 14) hence making it "more efficient and durable in use and less expensive to manufacture." (lines 19-21)
Acetylene-Gas Generator.
Patent for a new and useful acetylene gas generator, including instructions and illustrations.
Acetylene-Gas Generator
Patent for an acetylene gas generator which automatically regulates the feeding of carbide into the generator.
Acetylene-Gas Generator
Makes gas generators more automatic making them less dangerous and less likely to cause an explosion.
Acetylene-Gas Generator.
Patent for certain new and useful improvement sin acetylene gas generators, including instructions and illustrations.
Acetylene-Gas Generator
Patent for a generator that runs on acetylene gas with a component that releases excess gas in the event the gasometer is overcharged, including illustrations.
Acetylene Gas Generator
Patent for acetylene gas generator. Illustration included.
Acetylene Gas Generator
Patent for an acetylene gas generator. This invention is designed to be automatic, use non-freezing fluids, and work on railway trains or ships. Illustrations included.
Acetylene Gas Generator
Patent for improving acetylene gas generator designs with the use of an added specification in the form of a new apparatus. Illustrations and instructions are included.
Acetylene-Gas Generator.
Patent for improving acetylene gas generators.
Acetylene-Gas Generator
Patent for an acetylene gas generator designed to prevent from being overcharged with carbide. Illustrations included.
Acetylene-Gas Generator.
Patent for an acetylene-gas generator that provides an apparatus in which the parts may be readily detached for convenience in making repairs.
Acetylene-Gas Generator.
Patent for "an improved apparatus for generating acetylene gas" (lines 12-13). The apparatus includes a carbid receptacle with a conical bottom and a cylindrical valve for better control of the carbid, as well as a gas tank with a gasometer-bell which operates the system.
Acetylene-Gas Generator.
Patent for an acetylene gas generator that automatically feeds carbide into the water tank and cleans the feed valve.
Acetylene-Gas Lamp.
Patent for a new and improved acetylene gas lamp, including instructions and illustrations.
Acetylene-Gas Lamp.
Patent for certain new and useful improvements in acetylene gas lamps, including instructions and illustrations.
Acetylene Gas Machine
Patent for a new and useful improvement in gas-machines.
Acetylene-Gas Machine
Patent for a acetylene gas machine that automatically controls the flow of carbid or gas producing material into the generator "by means of a float and lever connection with the valve of the carbid hopper" (lines 19-21).
Acetylene-Gas Machine
Patent for an acetylene gas machine designed to " automatically feed different grades of carbid successfully in variable quantities according to the amount required" (lines 9-11).
Acetylene Gas Torch
Patent for a acetylene gas torch. Illustration included.
Acetylene Generator
Patent for an acetylene generator. Illustration included.
Activated-Sludge Treatment.
Patent for a method that dehydrates sewage for easier removal.
Actuating Device for Circuit Closers
Patent for an actuating device for circuit closers. Illustration included.
Adding and Subtracting Machine
Patent for an improved adding and subtracting machine adapted to be attached to the end of a lead pencil. It is readily manufactured and simple in construction.
Adding-Machine
Patent for disk to make calculations.
Adding-Machine
Patent for "a simple, cheap, and efficient device of this character which may accomplish with facility and case all the purposes for which it is intended" (lines 13-16).
Adding-Machine.
Patent for an inexpensive, simple, easily operated, and improved registering machine that is meant to add numbers without mistakes. It uses revoluble number wheels and a spring-returned shaft among other materials.
Adding-Machine
Patent for "an adding-machine which, while being constructed of but comparatively few parts, will be so adjusted as arranged as to allow an operator to make rapid and correct calculations; furthermore, to produce an adding-machine in which the operator will be enabled to detect immediately any mistake which he may have made, and, finally, to produce a simple, efficient, and effective adding-machine" (lines 13-22).
Adding Machine.
Patent for a new and improved adding machine. This design "consists in the combination, with a box, of a spindle in the same, a sleeve surrounding the spindle, a hand on the spindle, a hand on the sleeve, devices for turning the spindle from the sleeve, a cog-wheel revolving from the spindle, and an extra hand in connection with the cog-wheel" (lines 10-16).
Adding-Machine.
Patent for am adding machine by using two disks, one a units-disk with pins in multiples of ten, one a tens-disk, is an annular disk with pin surrounding the units disk, an outwardly spring-pressed holder having a beveled outer end frictionally engaging the pins of the tens-disk and a carrier having oppositely-beveled ends engaged a supplemental pin and one pin on the tens-disks, teeth in the adjacent faces of the holder and carrier, and an idle-gear between them to enable the adding operation. (Lines 50-62) Illustration is included.
Adding-Machine.
Patent for a new and improvement in adding-machines in which a mechanical wheel has teeth. " The object of the invention is to provide the means for adding columns of figures by machinery"(lines 13-15), with instruction and illustration
Adding-Machine.
Patent for an adding-machine meant to "add fixed amounts of money received or to calculate the number of days a laborer has worked or the number of fractions of days" (lines 14-17). Mounted keys have mechanisms that rotate a ratchet wheel or disk. "Secured to the shaft upon which this ratchet wheel or disk is mounted is a rate-indicator, consisting of a disk divided off into radial sections, and also divided by lines running parallel to the circumference of said disk, dividing the same up into sections, which indicate money advanced on pay-roll, addition column, total amount at a fixed rate, and the number of days worked by any workman" (lines 25-34).
Adding-Machine
Patent for adding machine that has improvements such as a controllable disk to avoid over or under rotation and simpler means of adding and removing adding disks.
Adding-Machine
Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Adding-Machine
Patent for an adding machine that is simple and can be manufactured at a small cost.
Adding Machine.
Patent for a new and improved adding machine using rotating discs.
Adding Machine
Patent for a machine that adds numbers together using "key actuated accumulating wheels" to reach the desired sum, including illustrations.
Addressing-Machine.
Patent for an improved addressing machine, which will "paste, cut, and attach the slip simultaneously, or with one operation" (lines 26-27), with instructions and illustrations.
Adhesive and Method of Making the Same
Patent for starch used for paper that can act as an adhesive coating. Illustrations included.
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