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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
Car Coupling
Patent for a rail car coupling. Illustration included.
Date:
December 4, 1906
Creator:
Yeiser, John Clarke & Story, Leonidas J.
System:
The Portal to Texas History
Beauty-Pillow.
Patent for improvement in beauty pillow which is slanted to draw the skin back toward the scalp to prevent wrinkling. Illustration is included.
Date:
May 4, 1909
Creator:
Fitze, Eloise
System:
The Portal to Texas History
Automatic Weighing Machine
Patent for an automatic weighing machine. Illustration included.
Date:
August 4, 1908
Creator:
Carter, Edward D.
System:
The Portal to Texas History
Cotton Chopper
Patent for a cotton chopper. Illustration included.
Date:
August 4, 1908
Creator:
Gresham, Louis David
System:
The Portal to Texas History
Bed - Slat.
Patent for a new and useful improvements in bed-slates to provide a strong brace.
Date:
January 4, 1898
Creator:
Pickett, Mollie
System:
The Portal to Texas History
Automatic Feed-Water Steam-Generator
Patent for a steam generator for hydrocarbon burners. Illustrations included.
Date:
February 4, 1913
Creator:
Mills, John H. T. & Mills, Virgil H.
System:
The Portal to Texas History
Cash-Box
Patent for "a device adapted for persons making a great number of small collections, such as railway conductors" (lines 8-10).
Date:
March 4, 1902
Creator:
Peetz, John J.
System:
The Portal to Texas History
Combined Billing and Journal Sheet.
Patent for improvements in combined billing and journal sheets there by each sheet in the journal will serve as a billing sheet, a duplicate billing sheet, and a journal page at the same time. (Lines 18-20) Further, the bound book will serve as a permanent journal after the bills have been removed. (Lines 25-26) Illustration is included.
Date:
January 4, 1910
Creator:
Hartley, James William
System:
The Portal to Texas History
Automobile-Pump
Patent for an automobile tire pump that can be used with any size tire.
Date:
March 4, 1913
Creator:
Goeth, Richard Anton; Rodgers, Robert B. & Dittmar, John Albert
System:
The Portal to Texas History
Coach-Equalizing Suspender.
Patent for a coach-equalizing suspender.
Date:
March 4, 1902
Creator:
Best, William Newton
System:
The Portal to Texas History
Coin-Holder.
Patent for improvement in coin-holder “to be use on a belt to be worn by a person or on a stand placed on a counter, desk, or the like, and arranged to hold coins of desired denominations and to permit the user to conveniently and quickly remove coins of various denominations for making changes.” (Lines 10-16) Illustration is included.
Date:
December 4, 1900
Creator:
Miller, Thomas Octavus
System:
The Portal to Texas History
Couch
Patent for a couch. Illustration included.
Date:
April 4, 1905
Creator:
Hartshorn, Guy C.
System:
The Portal to Texas History
Boiler-Flue Cleaner.
Patent for a new and useful boiler flue cleaner, including instructions and illustrations.
Date:
September 4, 1898
Creator:
Hamilton, Ninian B.
System:
The Portal to Texas History
Antifriction Decive for Sucker-rods and Couplings
Patent for an improved method of connecting sucker-rods, couplings, or ropes so as to minimize wear and extend the life of the materials, with illustrations.
Date:
November 4, 1902
Creator:
Black, William L.
System:
The Portal to Texas History
Apparatus for Expressing the Fluids Out of Paraffin Compositions and Separating the Scale Therefrom
Patent for an apparatus for expressing the fluids out of paraffin compositions and separating the scale therefrom. Illustrations included.
Date:
March 4, 1913
Creator:
Hansen, Julius
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
Corn or Cotton Planter.
Patent for a new, improved combined corn and cotton planter, including illustrations.
Date:
February 4, 1902
Creator:
Ferriott, Charles L.
System:
The Portal to Texas History
Automatic Vehicle Brake
Patent for automatic vehicle brake. The invention "provides a spring controlled rack cooperating with a gear or pinion or a vehicle wheel." (line 18-20). Illustrations included.
Date:
April 4, 1911
Creator:
Uhl, Edgar G.
System:
The Portal to Texas History
Adjustable Nailless Horseshoe.
Patent for an adjustable horseshoe with cost efficient, replaceable fittings. Illustrations included.
Date:
September 4, 1900
Creator:
Fenley, Harriet R.
System:
The Portal to Texas History
Churn Dasher
Patent for a churn dasher. Illustration included.
Date:
April 4, 1905
Creator:
Simons, Silas C.; Clark, Samuel H. & Clark, Louther M.
System:
The Portal to Texas History
Billiard Cue
Patent for a billiard cue. This invention is designed with removable tips. Illustration included.
Date:
April 4, 1911
Creator:
Borroughs, John Vertie
System:
The Portal to Texas History
Antifriction Device for Sucker-Rods.
Patent for a rod sleeve to protect the rod joints from damage or bending. The design also includes rollers to keep the rods centered in the casing to eliminate rubbing.
Date:
August 4, 1903
Creator:
Black, William L.
System:
The Portal to Texas History