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Explosive double salts and preparation. [Patent application]
A new composition of matter has been discovered which is an explosive addition compound of ammonium nitrate (AN) and diethylenetriamine trinitrate (DETN) in a 50:50 molar ratio. the compound is stable over extended periods of time only at temperatures higher than 46/sup 0/C, decomposing to a fine-grained eutectic mixture (which is also believed to be new) of AN and DETN at temperatures lower than 46/sup 0/C. The compound of the invention has an x-ray density of 1.61 g/cm/sup 3/, explodes to form essentially only gaseous products, has higher detonation properties (i.e., detonation velocity and pressure) than those of any mechanical mixture having the same density and composition as the compound of the invention, is a quite insensitive explosive material, can be cast at temperatures attainable by high pressure steam, and is prepared from inexpensive ingredients. Methods of preparing the compound and the fine-grained eutectic composition of the invention are given.
Date:
February 3, 1982
Creator:
Cady, H. H. & Lee, K. Y.
System:
The UNT Digital Library
Silicon tetrafluoride generation. [Patent application; from hexafluorosilicic acid]
This invention is directed to a process of generating silicon tetrafluoride (SiF/sub 4/) from aqueous solutions of hexafluorosilicic acid (H/sub 2/SiF/sub 6/), comprising reacting an aqueous solution of H/sub 2/SiF/sub 6/ with a concentrated aqueous salt solution to produce a precipitate, separating and drying the precipitate, and heating the precipitate in an inert atmosphere to decompose the precipitate producing SiF/sub 4/.
Date:
January 3, 1982
Creator:
Hansen, K. C. & Yaws, C. L.
System:
The UNT Digital Library
Coffin.
Patent for "a coffin of improved construction and composition, to so construct the same as to render it impervious to the action of water or moisture, and to render said coffin strong and durable and admit of the same being produced in a neat and ornamental form." (Lines 10-15) Includes instructions and illustrations.
Date:
March 3, 1896
Creator:
Handshy, Henry M.
System:
The Portal to Texas History
Cloth Measuring Reel.
Patent for a new and improved cloth-measuring wheel. This design "consists in the peculiar combination and arrangement of the cutting-board with two standards, whereby the said cutting-board is made to act as a sufficient brace for the frame, as well as to perform the offices of a cutting board. The invention also consists in means for producing a variable tension on the cloth as it passes from the roll to the reel, whereby the tendency of different thicknesses of cloth to wind the cloth in greater or lesser lengths than the register indicates is compensated for and corrected" (lines 27-39).
Date:
January 3, 1882
Creator:
Peters, James H.
System:
The Portal to Texas History
Car-Coupling.
Patent for a simple and reliable car-coupling that embodies "novel features of construction that adapt[s] said coupling for an automatic coupled engagement with a similar coupling, and that may be safely uncoupled from the side of the car whereon the improvement is secured" (lines 11-16).
Date:
September 3, 1895
Creator:
Tiner, John F.
System:
The Portal to Texas History
Baling-Press.
Patent for "certain new and useful improvements in baling-presses." (Lines 5-6) Illustrations are included.
Date:
April 3, 1888
Creator:
Archer, Roger W.
System:
The Portal to Texas History
Carriage Top.
Patent for a new and improved carriage top. This design consists in "the combination, with a vehicle-seat, a series of top-supporting bows pivoted thereto, and a jointed brace having its lower end pivoted to the seat and its upper end to one of the bows, of a rigid operating-lever having its upper end pivoted to said jointed brace and its lower end adjustably connected with the seat, whereby the position of the lower end of said lever may be varied and the brace and top secured in any desired position" (lines 51-60).
Date:
July 3, 1888
Creator:
Goelet, Edward Buncombe
System:
The Portal to Texas History
Shearing and Punching Machine.
Patent for punches and shears combined to cut metal longitudinally.
Date:
July 3, 1888
Creator:
Echols, Christaphor Columbus
System:
The Portal to Texas History
Bit for Well-Drilling Apparatus.
Patent for an expansion bit for a well-drilling apparatus that can be "adjusted and removed without without withdrawing the well tubing, and to provide means whereby a bit capable of drilling a hole sufficiently larger than the well tubing to accommodate a casing may be introduced through the tubing" (lines 11-16).
Date:
April 3, 1894
Creator:
Horton, Stephen A.
System:
The Portal to Texas History
Bicycle.
Patent for a bicycle that can be operated by the operator's hands or feet or both, and the motion used to operate the bicycle is that of rowing. "the rider must assume a position upon the machine corresponding to that assumed by an oarsman in a boat, and as the rider can work with both hands and feet all the energy and strength he is capable of exerting can be brought to bear upon the propelling mechanism in a most effective manner, and the seat can be rendered much more comfortable than at present and in no wise interfere with the rider's movements" (lines 18-27).
Date:
April 3, 1894
Creator:
Hyde, Thomas B.
System:
The Portal to Texas History
Combined Stalk-Cutter and Rake.
Patent for an improved combined stalk cutter and rake that has a main frame, a rake frame, a hanger attached to the axle-bar under the frame, arms at the back of the frame, a transverse rod in the hanger and slots in the arms, a rock-lever, connections for operating the frame, a rake at the end of the frame, and an operating lever.
Date:
April 3, 1894
Creator:
Priestley, Joseph
System:
The Portal to Texas History
Car-Replacer
Patent for invention for new and useful improvements in Car-Replacer. The invention relates to improvements in car replacers which can easily be applied to a track or rail which will quickly and easily cause the car to enter upon the track and which cannot possibly become displaced by the weight and strain of the car
Date:
January 3, 1892
Creator:
Moore, Francis A.
System:
The Portal to Texas History
Belt-Tightener
Patent for an improvement in belt fasteners, "especially adapted for use in connection with the running belts of planning, sizing, matching, molding and like machines" (lines 10-12) so that belts may be adjusted to tighten or loosen easily.
Date:
January 3, 1893
Creator:
Noble, John B. & Hensley, Joseph B.
System:
The Portal to Texas History
Broadcast Seeder.
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).
Date:
June 3, 1890
Creator:
Callaway, Johnathan Asa
System:
The Portal to Texas History
Base Ball Game.
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).
Date:
June 3, 1890
Creator:
Maxcy, John Wharton
System:
The Portal to Texas History
Bent for Suspension-Bridges.
Patent for improvements in bents for suspension-bridges by securing the columns with wire braces, cross-bar and anchor-pins. Illustration is included.
Date:
September 3, 1889
Creator:
Runyon, Edwin Elijah
System:
The Portal to Texas History
Bird-Cage
Patent for "bird-cages of the circular kind, wherein the main-frame wires have a band at their lower ends and a single tie-wire arranged diametrically across the band. . .to utilize the single diametrical tie-wire as a support for an inverted interiorly screw-threaded connecting-cap, and to combine with such a device a pan" (lines 10-12 and 17-23).
Date:
September 3, 1889
Creator:
Coffield, Charles Hunter
System:
The Portal to Texas History
Clasp.
Patent for a new and improved clasp. This design "is to make a fastener for pieces of leather by which bridles and other parts of harness may be made with less stitching and riveting, thereby lessening the labor and cost of manufacture" (lines 15-20). To this end, it consists in "two plates, [one] having key-hole slots with beveled side walls, and the [other] carrying studs undercut . . . and provided with top pin, in combination with the spring-plate perforated . . . to receive [the] pin to form the leather clasp or fastening described" (lines 77-83).
Date:
December 3, 1889
Creator:
Waters, Richard H.
System:
The Portal to Texas History
Baling Press.
Patent for a new and improved baling press. This design "comprise[s] a frame and case having aligned baling-chambers at opposite ends, a follower having two head-blocks working one in each of the baling-chambers, a shaft journaled between the baling-chambers, and two ropes connected at one end to the shaft and at their other ends to the opposite head-blocks" (lines 46-53).
Date:
May 3, 1887
Creator:
Green, William Robert & Green, Newton Jasper
System:
The Portal to Texas History
Bath Tub.
Patent for a new and improved bath tub. This design consists in "a removable bottom provided with perforations or openings, and with supports to sustain it above the permanent bottom of the tub, a single opening in said tub below the level of the removable bottom for inlet and outlet purposes, a valve for closing said opening, and a rod within reach of the head of the tub for operating the valve and the cover" (lines 9-16).
Date:
May 3, 1887
Creator:
Watson, David R.
System:
The Portal to Texas History
Apparatus for Handling Brick.
Patent for an apparatus for handling brick "whereby the number of brick handled by a single hand may be greatly increased" (lines 9-11) including illustrations.
Date:
January 3, 1888
Creator:
Aber, Edgar
System:
The Portal to Texas History
Apparatus For Emptying Barrels Or Other Receptacles Containing Liquids.
Patent for a device to empty barrels and other receptacles containing liquids, including illustrations.
Date:
March 3, 1885
Creator:
Hudson, Benjamin Franklin
System:
The Portal to Texas History
Caster and Insect Guard Combined.
Patent for a new and improved combined caster and insect guard for furniture. This design consists "[i]n a combined caster and insect guard, the combination, with a suitable spindle, of a segmented cup or vessel having a central upwardly-extending bearing for such spindle, and provided on its under side with a recess the edges of which are provided with bearings for a wheel or caster" (lines 95-101).
Date:
March 3, 1885
Creator:
Michalson, Lewis Abraham
System:
The Portal to Texas History
Combination Tool.
Patent for a new and improved multi-tool. This design "consists of a tool having a staple-holder, a driver, a chisel, a vise attachment, and a detachable driver adapted to be used with the vise to splice the ends of the wire in building wire fences, in which the tool is used for driving staples, cutting the wire, and splicing the wire, the several devices forming a combination-tool disposed for convenient use upon a stock or holder" (lines 9-17).
Date:
March 3, 1885
Creator:
Archer, Roger Williams
System:
The Portal to Texas History