UNT Libraries Government Documents Department - 15 Matching Results

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Automatic Electric Switch
Patent for an automatic electric switch. Illustration included.
Buggy Top Support
Patent for a buggy top support. Illustration included.
Calendar
Patent for a calendar. This invention relates to a form of calendar known as "perpetual" calendars. Illustration included.
Car Door Fastener
Patent for a car door fastener. Illustration included.
Core Lifter For Diamond Drills
Patent for a core lifter for diamond drills. Illustration included.
Insect Trap
Patent for an insect trap. Illustration included.
Match Box
Patent for a match box. Illustration included.
Milk Cooler
Patent for a milk cooler. Illustration included.
Music Indicator
Patent for a music indicator. This device is readily applied to a piano or other keyed musical instruments in order to properly indicate the various chords, notes, scales, and the like. Illustration included.
Pump
Patent for a pump. This invention is a "class of pumps employing one or more rotary propellers for lifting the water" (line 11-13). Illustration included.
Self Setting Trap
Patent for self setting trap. Illustration included.
Shutter - Fastener
Patent for an improvement in shutter and blind fasteners. The invention provides a way for someone to lock or fasten blinds so they cannot be opened from the outside.
Spark-Arrester
Patent for an improved and simplified spark arrester, which deflects sparks and other products of combustion back into the furnace or into a designated receptacle.
Stalk Breaker Or Reducer
Patent for a stalk breaker or reducer. Illustration included.
Steam Engine
Patent for "useful improvements in Steam-Engines, of which the following is a specification" (lines 5-6). Includes description and illustrations.
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