1879 Article Roper Caloric Engine for Hoisting Sherrill Roper Air Co New MAB1 XAS6 This piece was illustrated by

This piece was illustrated by De Tejada

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1879 Article Roper Caloric Engine for Hoisting Sherrill Roper Air Co New MAB1 XAS6 This piece was illustrated byThis is an original 1879 one page print article about the Roper Caloric Engine for Hosting, manufactured by Sherrill Roper Air Engine Company, 91 Washington Street, New York. The engine is represented in Fig. 1, while the large engraving (Fig. 2) shows its mode of application to an elevator, which may be made to move upwards as well as downward from the floor on which the engine stands, so that the latter can as well be placed on the top floor of a