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Nuclear reactor control apparatus. [FBR]
Nuclear reactor safety rod release apparatus comprises a ring which carries detents normally positioned in an annular recess in outer side of the rod, the ring being held against the lower end of a drive shaft by magnetic force exerted by a solenoid carried by the drive shaft. When the solenoid is de-energized, the detent-carrying ring drops until the detents contact a cam surface associated with the lower end of the drive shaft, at which point the detents are cammed out of the recess in the safety rod to release the rod from the drive shaft. In preferred embodiments of the invention, an additional latch is provided to release a lower portion of a safety rod under conditions that may interfere with movement of the entire rod.
Date:
April 16, 1981
Creator:
Sridhar, B.N.
System:
The UNT Digital Library
Gamma-thermometer-based reactor-core liquid-level detector. [PWR]
A system is provided which employs a modified gamma thermometer for determining the liquid coolant level within a nuclear reactor core. The gamma thermometer which normally is employed to monitor local core heat generation rate (reactor power), is modified by thermocouple junctions and leads to obtain an unambiguous indication of the presence or absence of coolant liquid at the gamma thermometer location. A signal processor generates a signal based on the thermometer surface heat transfer coefficient by comparing the signals from the thermocouples at the thermometer location. The generated signal is a direct indication of loss of coolant due to the change in surface heat transfer when coolant liquid drops below the thermometer location. The loss of coolant indication is independent of reactor power at the thermometer location. Further, the same thermometer may still be used for the normal power monitoring function.
Date:
June 16, 1981
Creator:
Burns, T.J.
System:
The UNT Digital Library
Bed-Slat Fastener.
Patent for a new and useful bed slat fastener, including instructions and illustrations.
Date:
August 16, 1898
Creator:
Sonntag, Edwin C.
System:
The Portal to Texas History
Cotton Compress
Patent for improvements to the cutting mechanism in cotton compresses to "provide positive and reliable means for severing the full-grown or completed bale from the remaining column of compressed material and yieldingly supporting the said remaining column of compressed material under pressure to permit the baling operation to continue" (lines 21-27).
Date:
March 26, 1900
Creator:
Griffin, Thomas J.
System:
The Portal to Texas History
Artificial Bait
Patent for an artificial bait. Illustration included.
Date:
June 16, 1908
Creator:
Caldwell, Charley D.
System:
The Portal to Texas History
Automatic Dumping-Elevator
Patent for an automatic dumping elevator for supplies which can stop at different heights and dump the contents of the elevator.
Date:
November 16, 1909
Creator:
Richmond, George E.
System:
The Portal to Texas History
Cotton-Condenser and Lint-Flue.
Patent for a cotton condenser and lint flue for use in cotton gins.
Date:
April 16, 1912
Creator:
Summerrow, Willie Price
System:
The Portal to Texas History
Combined Cotton-Seed and Corn Planter
Patent for a new and improved combined cotton seed and corn planter. The invention has "relation to improved means for adjusting the wheels laterally to provide for increasing or diminishing the width of the rows" (lines 13-16).
Date:
August 16, 1898
Creator:
Kile, William A.
System:
The Portal to Texas History
Check-Valve for Locomotive-Boilers and the Like.
Patent for "an improvement in check valves particularly adapted for use on locomotive boilers" (lines 9-11) with illustrations.
Date:
November 16, 1909
Creator:
Fondren, Theodore Robert ; T. R. Fondren
System:
The Portal to Texas History
Dirt-Tamping Tool.
Patent for a dirt tamping tool, which is strong and simple to use.
Date:
November 16, 1909
Creator:
Sherman, Henry A.
System:
The Portal to Texas History
Animal-Poke
Patent for an animal poke worn on the head of cattle to prevent jumping outside the field which allows the cow to graze freely while wearing the poke.
Date:
July 16, 1907
Creator:
Seay, Mark Machel
System:
The Portal to Texas History
Box.
Patent for a metal, rural, mail carrier supply box with various compartments for different supplies.
Date:
February 16, 1909
Creator:
Dullye, August V. & Woodrome, George H.
System:
The Portal to Texas History
Cotton-Cultivator.
Patent for a cotton cultivator, which scratches the stalks of each cotton plant to stunt the plants growth and increase its cotton yield.
Date:
March 16, 1909
Creator:
Pacha, Anton
System:
The Portal to Texas History
Angle-Bending Machine
Patent for angle-bending machine.
Date:
December 16, 1902
Creator:
Dillon, Ivy Hancock
System:
The Portal to Texas History
Draft-Equalizer.
Patent for "devices for equalizing the draft where three or more draft-animals are used" (lines 8-10) to pull machinery, carriages, or wagons with illustrations included.
Date:
September 16, 1902
Creator:
Hayden, Jefferson B.
System:
The Portal to Texas History
Automatic Cut-Out for Windmills
Patent for a windmill part which stops the windmill from running when the water tank is full.
Date:
July 16, 1907
Creator:
Roesler, John
System:
The Portal to Texas History
Boat-Propeller
Patent for a boat propeller that runs more efficiently by turning in such a way that the load of water on the propeller is taken off when its blades are going up.
Date:
July 16, 1912
Creator:
Reames, Charles H.
System:
The Portal to Texas History
Boiler Stay Bolt
Patent for a boiler stay bolt. This design is made of flexible stay-bolts for boiler allowing for movement bracing sheets. Illustration included.
Date:
June 16, 1908
Creator:
Borneman, Lewis
System:
The Portal to Texas History
Composition for Removing Boiler-Scale
Patent for "an extract of the plant know to botanists by the name 'Larrea Mexican,' to be used in removing boiler-scale and in preventing the reformation of the same" (lines 9-13).
Date:
April 16, 1901
Creator:
Pena, Benjamin
System:
The Portal to Texas History
Adjustable Headlight-Reflector
Patent for an adjustable headlight reflector for train engines which will shine the light straight in front of the train.
Date:
March 16, 1909
Creator:
Pratt, James R.
System:
The Portal to Texas History
Caster.
Patent for "casters, and more especially to those of that type employing a ball and anti-friction rollers," (lines 8-10) including instructions and illustrations.
Date:
May 16, 1911
Creator:
Taylor, Henry William
System:
The Portal to Texas History
Coin-Controlled Vending Machine
Patent for a coin operated vending machine for selling cigars or other objects in round or square packages which can deliver the correct number of products regardless of how many coins are inserted into the machine to equal the selling price.
Date:
July 16, 1907
Creator:
Wilson, John C.
System:
The Portal to Texas History
Door-Stop.
Patent for a door stop, which is made of metal and attaches easily to the door.
Date:
March 16, 1909
Creator:
Snowden, Rene Ravenel
System:
The Portal to Texas History
Cotton - Chopper.
Patent for a new and useful improvement in cotton choppers machine as the attachment to cultivators, including instructions and illustrations.
Date:
November 16, 1897
Creator:
Richter, Frank L.
System:
The Portal to Texas History