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in subjects: "Science and Technology - Tools"

Pipe of Concrete and the Like

Patent for bell and spigot concrete pipes with a slip joint. This eliminates the potential for wear of the slipping joints, thus mimicking a metal pipe.

Date: May 29, 1920

Creator: Trammell, Jefferson D.

Partner: UNT Libraries Government Documents Department

Battery-Plate and Terminal Connection

Patent for improvements on a battery plate and terminal connections. Plate lugs and the terminal for the battery are a solid piece to fit more battery sizes and prevent the lugs from breaking off.

Date: May 4, 1920

Creator: Hawkins, Alda F.

Partner: UNT Libraries Government Documents Department

Carbon-Brush Holder

Patent for a carbon-brush holder that provides the user with novel means of holding a carbon brush. Through this device, users can more efficiently transmit an electric current from the brush to motors, dynamos, or commutators.

Date: May 28, 1918

Creator: Knight, James H.

Partner: UNT Libraries Government Documents Department

Head for Hammers and Other Tools.

Patent for heads for hammers, hatchets, axes, and other similar tools that prevents the handles from becoming loose in the heads, and that can also tighten the handles in the heads. Includes illustration.

Date: May 28, 1918

Creator: Mosley, Noah S.

Partner: UNT Libraries Government Documents Department

Matrix Molding Device

Patent for matrix molding devices can be use in linotype or intertype or line casting machines for molding printers' slugs.

Date: May 15, 1917

Creator: Markwell, Andrew E.

Partner: UNT Libraries Government Documents Department

Pin-Holder

Patent for mechanism that will encase and dispense pins. It holds a roll of pins and its paper and guides "the removal of pins without manipulation of any apparatus, and without requiring mechanism for checking the pins individually" (lines 20-23).

Date: May 23, 1916

Creator: Bowman, Levi M.

Partner: UNT Libraries Government Documents Department

Dental Tool

Patent for a series of dental cleaning tools to remove deposits from teeth and smooth rough surfaces. This design inflicts minimal damage to the gum tissue while both a guide and blade are in contact with the tooth.

Date: May 4, 1915

Creator: Carr, Cassius M.

Partner: UNT Libraries Government Documents Department

Safety Switch-Chain

Patent for a safety chain "comprising a cuff and integral diverging lever-arms."

Date: May 5, 1914

Creator: Gerlach, Harry C.

Partner: UNT Libraries Government Documents Department

Fly-Trap.

Patent for a fly/insect trap with a unique construction that includes an upright cylindrical casing, a peripheral rib, a transparent funnel, and a mesh bait holder, including illustrations.

Date: May 27, 1913

Creator: Buck, Daniel Luther

Partner: UNT Libraries Government Documents Department

Puncture-Closing Compound.

Patent for closing the punctures or blow-outs in tires for automobiles or other vehicles using inflatable tires.

Date: May 20, 1913

Creator: Watkins, William J.

Partner: UNT Libraries Government Documents Department

Clock.

Patent for self-winding secondary clocks that are "connected in series to be timed by a master clock and more particularly to tower clocks" (lines 10-12) with the objectives of keeping perfect time and winding periodically, including instructions and illustrations.

Date: May 6, 1913

Creator: Friedman, Bernhard Z.

Partner: UNT Libraries Government Documents Department

Moistening and Sprinkling Attachment for Brooms.

Patent for attachment to brooms which enables the moistening of the broom during use to prevent the spreading of dust. One part regulates the flow of liquid to the broom and another provides a container for the liquid. In effect the attachment to the broom makes it into a convertible mop.

Date: May 23, 1905

Creator: Taylor, James P.

Partner: UNT Libraries Government Documents Department

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