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Propelling or Power-Generating Mechanism.

Description: Patent for the constructions of a propelling machine of a vessel, which is provided an electric motor in an engine as a power source for propelling the vessel.
Date: July 22, 1913
Creator: Caldwell, John C.
Partner: UNT Libraries Government Documents Department

Rotary Drilling Apparatus

Description: Patent for well drilling apparatus (commonly known as rotaries) with eliminated screws and nuts, and reduced minimum number of parts, and which provides a quickly and easily operable gripping device.
Date: June 22, 1915
Creator: Black, Lee J.
Partner: UNT Libraries Government Documents Department

Filling-Machine.

Description: Patent for an improved filling machine that automatically transfers predetermined quantities of liquids from one container to multiple other containers such as oils into cans.
Date: May 22, 1917
Creator: Smith, Frederick C.
Partner: UNT Libraries Government Documents Department

Automatic Slack-Take-Up and Cooling Device.

Description: Patent for new and useful improvements to Automatic Slack-Take-Up and Cooling Devices for the manufacturing of flexible roofing and other similar flexible materials, including illustrations.
Date: May 22, 1917
Creator: Smith, Frederick C.
Partner: UNT Libraries Government Documents Department

Chain Release for Logging Cars.

Description: Patent for new and useful improvements for a chain release for logging cars, including illustrations.
Date: May 22, 1917
Creator: Dodd, John
Partner: UNT Libraries Government Documents Department
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