UNT Libraries Government Documents Department - 4 Matching Results

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Holder for Paper Bags and Other Articles
Patent for a holder for paper bags and other articles. Illustration included.
Map of the James River from Chaffin's Bluff to City Point
Map illustrating the Union and Confederate army lines west of the James River in Virginia. Rivers, swamps, cities, forts, and railroads are shown.
Rotary Reciprocating Engine
Patent for this invention has relation to the type of engines combining rotary and reciprocating movements in one structure, the purpose being to combine the working elements in such relation as to convert maximum percentage of force into available form for the performance of work.
Rotary Reciprocating Engine.
Patent for a rotary reciprocating engine that is smaller, has more horse-power, and has less friction than previous models.
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