Five hundred and seven mechanical movements (1903)
Brown, Henry T. [from old catalog] · New York, Brown & Seward · leaf 119
r Heros steam toy, describedby Hero, of Alexandria, 130 years e.g., and nowregarded as the first steam engine, the rotaryform of which it may be considered to represent.From the lower vessel, or boiler, rise two pipesconducting steam to globular vessel above, andforming pivots on which the said… … 47S ^ D,
Mechanical movements
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