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Self-actuating reactor-shutdown system. [LMFBR]
A control system for the automatic or self-actuated shutdown or scram of a nuclear reactor is described. The system is capable of initiating scram insertion by a signal from the plant protection system or by independent action directly sensing reactor conditions of low-flow or over-power. Self-actuation due to a loss of reactor coolant flow results from a decrease of pressure differential between the upper and lower ends of an absorber element. When the force due to this differential falls below the weight of the element, the element will fall by gravitational force to scram the reactor. Self-actuation due to high neutron flux is accomplished via a valve controlled by an electromagnet and a thermionic diode. In a reactor over-power, the diode will be heated to a change of state causing the electromagnet to be shorted thereby actuating the valve which provides the changed flow and pressure conditions required for scramming the absorber element.
Date:
June 4, 1981
Creator:
Barrus, D.M.; Brummond, W.A. & Peterson, L.F.
System:
The UNT Digital Library
Cotton and Corn Planter.
Patent for a cotton and corn planter that does not put as much pressure on the tongue of the machine as previous models and that allows the plow attachment to be lifted higher off the ground to avoid obstacles.
Date:
June 4, 1907
Creator:
Goodnight, Frank H.
System:
The Portal to Texas History
Coop or Crate.
Patent for crates or coops for poultry that are easily assembled and disassembled, pack tightly, and are cheap and lightweight.
Date:
June 4, 1907
Creator:
La Bauve, Odelon Joseph
System:
The Portal to Texas History
Buggy-Top Support.
Patent for buggy-top support by providing a device that can “secure the folding top of any vehicle and will protect the bows from strain and breakage, when in lowered position and will also prevent all rattling of and shocks of the folding top.” (Lines 11-15) Illustration is included.
Date:
June 4, 1901
Creator:
Mason, Everett H.
System:
The Portal to Texas History
Cleaner for Cotton-Gin Saws
Patent for "a new and improved cleaner for removing gummy and other matter from the saws of cotton-gins while the latter are running, thus permitting the saws to work very effectively in removing the lint from the seed" (lines 8-13).
Date:
June 4, 1889
Creator:
Godwin, John C.
System:
The Portal to Texas History
Block and Tying Mechanism for Baling Presses.
Patent for blocks and tying mechanism for baling presses, which include "a hollow block, a plurality of which may be used in a press, and a tying mechanism including transversely operating needles or plungers entering the the blocks and cooperating with the means therein for tying the bale wires" (lines 17-23) including an illustration and instructions.
Date:
June 4, 1918
Creator:
Ezell, Uberto D.
System:
The Portal to Texas History
Churn.
Patent for working body-churn "which is mounted between springs and is adapted to be worked up and down by the contraction and expansion of the springs so as to thoroughly agitate the cream within the receptacle thereof" (lines 16-20) including illustration.
Date:
June 4, 1918
Creator:
Payne, Luther Maxie; Robert Asbury Thompson & Lute Percy Morris
System:
The Portal to Texas History
Boll-Weevil Destroyer.
Patent for woll weevil destroyer that is an attachment that can be applied to the frame and beams of a cultivator and may knock weevil and insects from plants standing in a row.
Date:
June 4, 1918
Creator:
Young, Troy W.
System:
The Portal to Texas History
Communion-Service Cabinet.
Patent for an improved communion service cabinet meant to distribute communion service to parishioners "quickly and noiselessly" (lines 5-6). The shelves contain grooves to hold wine glasses and small loafs of bread.
Date:
June 4, 1918
Creator:
Howard, Jewell
System:
The Portal to Texas History
Chimney Cowl.
Patent for a chimney cowl with a manually controlled spark outlet
Date:
June 4, 1920
Creator:
Jezova, Mary
System:
The Portal to Texas History
Thermionic switched self-actuating reactor shutdown system
A self-actuating reactor shutdown system is described which has a thermionic switched electromagnetic latch arrangement which is responsive to reactor neutron flux changes and to reactor coolant temperature changes. The system is self-actuating in that the sensing thermionic device acts directly to release (scram) the control rod (absorber) without reference or signal from the main reactor plant protective and control systems. To be responsive to both temperature and neutron flux effects, two detectors are used, one responsive to reactor coolant temperatures, and the other responsive to reactor neutron flux increase. The detectors are incorporated into a thermionic diode connected electrically with an electromagnetic mechanism which under normal reactor operating conditions holds the control rod in its ready position (exterior of the reactor core).
Date:
June 4, 1981
Creator:
Barrus, Donald M.; Shires, Charles D. & Brummond, William A.
System:
The UNT Digital Library
Brush.
Patent for a brush that provides adjustable handle for variety of uses and great saving of time and labor. The brush is durable and not excessively heavy.
Date:
June 4, 1918
Creator:
Lay, William C.
System:
The Portal to Texas History
Combination Motion-Picture and Sound-Reproducing Mechanism.
Patent for a connecting mechanism between the motion picture and sound reproducing mechanisms. If the two get out of sync, there are manually operable means to halting one until the other has caught up.
Date:
June 4, 1918
Creator:
Kirkwood, Abraham L.
System:
The Portal to Texas History
Leather-Working Machine
Patent for a leather-working machine which performs the many steps involved in finishing leather straps and related items into one easy step, with illustrations.
Date:
June 4, 1918
Creator:
Russell, Frank K.
System:
The Portal to Texas History
Machine for making mattresses.
Patent for a machine for making mattresses with compressed lint-cotton inserted into a tick.
Date:
June 4, 1901
Creator:
Morgan, John W.
System:
The Portal to Texas History
Mail-Box
Patent for "a mail-box adapted to be placed at or on the house of the person receiving the mail, so as to facilitate a house-to-house delivery" (lines 8-11).
Date:
June 4, 1901
Creator:
Myer, Clayton Pittinger
System:
The Portal to Texas History
Improvement in Paper-Clips.
Patent for the improvement of paper-clips, made out of a single piece of metal. It includes a description and illustration.
Date:
June 4, 1872
Creator:
Franklin, Edward A.
System:
The Portal to Texas History
Improvement in Fences
Patent for an improvement in fences through the manufacturing of a fence or fence-paneling of hoop-iron, so that it may be sold in sections of any desired length, rolled up in compact form, easily and cheaply transported to any distance, and put up by the farmer with rapidity and facility.
Date:
June 4, 1872
Creator:
Brown, Floyd G.
System:
The Portal to Texas History
Improvement in Machines for Oiling Slides and Glides.
Patent for a new machine to be used for oiling slides and glides for engines, &c., includes illustration.
Date:
June 4, 1878
Creator:
Bates, Asa N.
System:
The Portal to Texas History
Improvement in Lock-Faucets.
Patent for a improvement in lock faucets, includes instructions and illustration.
Date:
June 4, 1878
Creator:
Seward, Marion F.
System:
The Portal to Texas History
Vacuum-Energized Make-and-Break Spark-Plug.
Patent for a vacuum-energized make-and-break spark plug that "relates to new and useful improvements in ignition apparatus for internal combustion engines" (lines 16-18) including instructions and illustrations.
Date:
June 4, 1918
Creator:
Irwin, Herbert Glen
System:
The Portal to Texas History
Transmission-Gearing.
Patent for "improvements in variable speed transmission gearing, adapted for use upon automobiles or the like, while not necessarily restricted to such use. An important object of the invention is to provide apparatus of the above mentioned character, which is so constructed that the various speeds may be obtained in a highly expeditious and convenient manner" (lines 11-17) including an illustration and instructions.
Date:
June 4, 1918
Creator:
Pilcher, Newton R.
System:
The Portal to Texas History
Water-Closet Attachment.
Patent for an attachment for water closets in outhouses without running water that blocks odors from escaping the pit by closing off the pit when not in use and automatically opens by a pressure bar behind the seat when the water closet is in use.
Date:
June 4, 1907
Creator:
Bradford, McDuffee
System:
The Portal to Texas History
Huller-Gin
Patent for a huller gin that sends the cotton hulls out of the gin machine automatically and runs continuously.
Date:
June 4, 1912
Creator:
Murray, Stephen D.
System:
The Portal to Texas History