esigned, like most 4 inches, and diameter 18inches. The diameter of the en- satisfaction. But the comparison of the following descrip rotary pumps, fora steam engine. It was patented in En gine cylinder is 2% inches, stroke 44 inches, and about 300 tion (selected from Hngineering) with the… … ings that, as the shaft revolves in Snyder, of 84 Fulton street, New THE McFARLAND ROTARY PUMP, the direction of the arrows, the driv- York city, who may be addressed for ing drum carries round with it the further particulars. pertory of Arts, volume IX., second series.” Ewbank fur- arms turning on…
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