UNT Libraries Government Documents Department - 10 Matching Results

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Float Valve
Patent for improvements on float valves that will "resupply the tank with water when it is withdrawn to a certain lower level and also operate to cut off the inflow when the water will have reached a predetermined height in the trough" (lines 14-18).
Fort McKavett Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Hair-Cutting Register.
Patent for a counting device for use by barber shops activated by taking on and off the head rest of a barbers chair, so that the shop owner knows how many hair cuts were given in each chair that day and can cross check the money taken in each day against the numbers of haircuts given.
Pump-Valve Mechanism.
Patent for a pump valve mechanism for use in deep wells, which can be easily removed for cleaning and repair,
Rock Springs Sheet
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
Shampoo-Registering Device.
Patent for a shelf for shampoos in barber shops that counts how many times shampoos are taken off and put back on the shelf for the purpose of counting customers.
Shave-Registering Device.
Patent for a shave registering device for use in barber shops, which is activated by the movement of the chair up and down.
Valve
Patent for a water pipe valve. Illustrations included.
Valve.
Patent for a valve, which attaches easily to all sorts of liquid-filled reservoirs and is durable.
Valve
Patent for a valve. This design is for use with tanks. Illustration included.
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