UNT Libraries Government Documents Department - 56 Matching Results

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Cooler.

Patent for an "iceless cooler" (line 13) with key features such as low manufacturing cost, easy assembly, and the capability to be collapsed for compact storage when not in use, including illustrations.

Date: January 26, 1918

Creator: Chapman, T. M.

Four-Wheel Drive

Patent for a four-wheel drive with a combined central driving unit and differential that simplifies construction and improves efficiency in operation.

Date: January 25, 1921

Creator: Littlejohn, Lonzo B.

Spring Motor

Patent for a device being used as a propulsion for some forms of machine.

Date: June 16, 1917

Creator: Sims, Taylor J.

Four Wheel Drive Mechanism

Patent for giving engine power equally to all four wheels of a vehicle.

Date: February 25, 1919

Creator: Littlejohn, Lonzo B.

Cattle-Guard.

Patent for improvements on a cattle-guard used on railways. Improvements include a novel method of attaching the guard to rails.

Date: December 16, 1913

Creator: Solomon, George N.

Pump.

Patent for "a pneumatically actuated nozzle for elevating water, in which the parts are readily assembled and adjusted for both shallow and deep work" (lines 19-22).

Date: June 29, 1915

Creator: Meier, Fred H.

Switch Stand and Lock

Patent for an improvement in switch-stand and locks, being that they cannot be picked or tampered with.

Date: July 21, 1914

Creator: Maupin, John D.; Allen, Harry E. & Baldwin, Springfield

Tire-Bolting Machine

Patent for new tire-bolting machine with "a unique assemblage of component parts, to enhance the utility of the structure, and the apparatus being improved generally to increase the efficiency thereof." (lines 16-19) , including instructions and illustrations.

Date: May 4, 1915

Creator: McCullough, Benjamin F.

Fish-Line Bob

Patent for a fish bob that can clamp and grip the fishing line. The fish bob can also be moved at will to any position with the users thumb or fingers.

Date: December 29, 1914

Creator: Bissett, Caleb

Non-Refillable Bottle.

Patent for a non-refillable bottle

Date: June 23, 1914

Creator: Red, John E.

Plow

Patent for plow improvements, including a "novelly adjusted stock" and "adjustable colter knife," with illustration (lines 10-15).

Date: February 16, 1915

Creator: Hankins, Elias

Gas Producer

Patent for a new invention of a "reverse draft gas producer in which a clean and pure dry gas can be obtained from lignite or low grade fuel, and especially adapted for use in connection with explosive engines" (lines 11-14).

Date: May 26, 1914

Creator: Guggolz, John F.

Baling-Press.

Patent for improvements in baling-presses by making baling-presses into a hand held portable press which includes a head block that could be released easily and quickly. Illustration is included.

Date: October 7, 1913

Creator: Nicholas, Joseph W.

Pneumatic Tool

Patent for a Pneumatic Tool that is capable of operating automatically at a very high speed." (line 20)

Date: May 27, 1913

Creator: Townsend, Isaac W.

Brick-Machine.

Patent for a brick machine that is "effective, yet simple and durable, machine especially adapted to receive bricks from a stiff-mud mill and re-press them and also to provide a means whereby the machine will be automatic in its action." (Lines 7-12) Illustrations included.

Date: May 15, 1900

Creator: Anthony, Russell