UNT Libraries Government Documents Department - 5 Matching Results

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Automobile Block.
Patent for improvements to automobile blocks, specifically employed for pulling automobiles from muddy or other places where the power of the car cannot be utilized. The patent is for a small, portable device that can be conveniently carried in the vehicle.
Concrete Form.
Patent for a circular concrete form. The form is adjustable and allows nesting for storage and transport.
Gauge Cock.
Patent for steam gauge or test cocks that provides a simple and economical gauge cock for steam boilers by which the steam can be readily tested and which is adapted to close the orifice automatically to provide a constructions which will not be disarranged in operation.
Lawn-Mower Sharpener.
Patent for a new device that improves lawn mower sharpeners, including illustrations. It is a detachable device that attaches directly to the lawn mower and sharpens the blades while in use.
Railroad-Crossing Signal
Patent for signaling devices designed for use along railroads and grade crossings and meant to be automatically operated upon the approach of a train by giving a visible or audible signal at the crossing which will warn travelers of the approach of the train and calcuated to avoid the occurrence of accidents. The signal device includes a track associated train operated circuit closing device for energizing a bell, flashing light, or signal arm or any other equivalence or suitable signal device located at the crossing.
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