st bench H, andD are screws for making it fast and firm at anydesired point to accommodate the size of thework to be morticed. On the top of the cy-linder is a slender rod with an orifice throughit whereby an additional spring can be addedto the machine passing over a pulley behindthe machine and… … This apparatus is the invention of Mr. J as,Harvey, of Craigsville, Orange Co., N. Y.—It is the application of a double pneumaticpump to supersede the use of the governorfor water wheels, especially for factories,where so much damage is often done to ma-chinery by the breaking of some shaft,…
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