UNT Libraries Government Documents Department - 12 Matching Results

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Animated Sign

Description: Patent for a display apparatus to be implemented as animated advertising signs which successively display different images by controlling the timing of changes in the colors of light used to flood the front and to backlight the display surfaces. The images are created in such a way that certain elements created in certain colors become absorbed or are made invisible when illuminated by certain colors of light. An apparatus controls the cyclical changes of the colored lights used by the sign.
Date: September 5, 1922
Creator: Craig, Richard M.
Item Type: Refine your search to only Patent

Brake.

Description: Patent for a brake (as it pertains to vehicles), that is operated by hand and that employs the use of brake bands and a drum to alter the momentum of a vehicle.
Date: May 23, 1922
Creator: White, John W.
Item Type: Refine your search to only Patent

Can Opener

Description: Patent for a can opener which cuts cleanly and rapidly around the outside wall of the can, so as to avoid jagged edges.
Date: February 14, 1922
Creator: Minor, Robert B.
Item Type: Refine your search to only Patent

Fuse carrier.

Description: Patent for a fuse "holder which carries a number of fuses, capable of being brought into proper position to provide a fresh fuse in the event of the burning or blowing out of one of the fuses" (lines 9-13). The carrier inside the holder is removable (line 15); as carried in this holder, the fuses are "held under strong tension," with a mechanism allowing easy retrieval of a "fresh fuse" if necessary (line 18).
Date: January 31, 1922
Creator: Burton, Frank M.
Item Type: Refine your search to only Patent

Method of and Apparatus for Producing Transformation Effects

Description: Patent for a method of creating transformation effects through the use of particular colors of illumination, to be used in the theater, amusement houses, or other performances. The invention involves using lights whose colors can either "absorb" or "wash out" certain objects or designs of the same color while revealing objects of a complementary color.
Date: September 5, 1922
Creator: Craig, Richard M.
Item Type: Refine your search to only Patent

Molding Apparatus.

Description: Patent for a molding apparatus for forming precast concrete units used for constructing monolithic straight and curved walls, floors, ceilings, and other building structures.
Date: October 31, 1922
Creator: Nelson, William E.
Item Type: Refine your search to only Patent

Semaphore

Description: Patent for a semaphore in the form of a rotatable tubular post for the purpose of signaling traffic conditions at an intersection. The semaphore communicates signals in the form of red or green plates, red or green colored lamplight, and pneumatic whistles, which are triggered by vehicles passing over platforms installed on the road surface near the intersection by means of underground tubes containing chains and pulleys. The actuation of the semaphore is detailed in "parent" application, seria… more
Date: October 31, 1922
Creator: Durán, Arturo
Item Type: Refine your search to only Patent

Speed-Regulating Device.

Description: Patent for speed-regulating devices that gradually increase or decrease the speed of a driven member automatically. This invention is applicable to motion picture film devices to increase or decrease the speed of the reel.
Date: May 16, 1922
Creator: McNeel, William Pinkney
Item Type: Refine your search to only Patent

Valve-Grinding Implement

Description: Patent for improvements in Valve-Grinding implements. This improvement is applicable to practically any type of engine or motor and to the different types of valves employed therein. This valve relates to the rotating of the valves of internal combustion engines and the like when the same is being ground to effect a proper seating action.
Date: April 18, 1922
Creator: Hood, William S.
Item Type: Refine your search to only Patent
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