UNT Libraries Government Documents Department - 3 Matching Results

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Improvement in Carriage-Axles.
Patent for improvements to carriage axles which include the addition of a sleeve, bearing, and linch-pin device.
Improvement in Current-Wheels.
Patent for improvements in current-wheels, consisting of an improved arrangement of feathering-buckets, the gate, and opening devices. It includes a description and illustration.
Improvement in Elevators.
Patent for improvements in elevators, for lifting heavy objects. It includes a description and illustration.
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