gas employed. The former is substituted by atmospheric air, the practical arrangement for effecting the combustion Improved Apparatus for Punching Shoe Uppers. being the following : The gases are admitted into one com. The machine illustrated in the engravings is intended for m on tube, frem thence… … the axes of the screws, D, are moved to any KEATING'S ADJUSTABLE GANG PUNCH position required, so as to correspond with the shape of the shoe to be punched. The machine is set for into many small jets ; these are delivered through a gauze of is obtained by immersing the work previously in a…
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