UNT Libraries Government Documents Department - 5 Matching Results

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Cotter-Pin Puller: Patent for cottor-pin puller that is useful to pull cotter pins that are secured in shafts, fly wheels or any other devices without bending or twisting or damaging them.
Electric Prod Pole: Patent for electric prodding pole used for corraling animals.
Electrically-Operated Door.: Patent for am electrically-operated door. This device has mechanisms that are when stepped on automatically open and close the door.
Gearing: Patent for improvements in gearing, "especially adapted for use in connection with wind mills and other devices" (lines 9-11) including illustrations.
Marker.: Patent for improvement in markers "used in filing and card index cabinets" (lines 6-7).Meant to "provide a light, simply constructed V-shaped device" (lines 11-13), to mark the location of papers or files that have been temporarily moved from a filing system.