. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. which a finof wood on the return edge hides the the tenons and mortises. 803. MORTISING DOVETAIL MACHINE. The upper bedsurface consists of two equally but oppositely incHned planes, B, B, whose slope corresponds with thechamfer of the desired , C ar
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. which a finof wood on the return edge hides the the tenons and mortises. 803. MORTISING DOVETAIL MACHINE. The upper bedsurface consists of two equally but oppositely incHned planes, B, B, whose slope corresponds with thechamfer of the desired , C are standards guiding in avertical path gate D, in whichis fixed a series of chisels whosecutting ends are at such an un-equal elevation as to correspondwith the obliquity of the planes,B, B. These chisels are readilyadjusted to any height and degreeof separation, and are fixed to theirproper positions by screw gate is elevated and depressed by means of a lever, F, and isgauged or arrested in its descent by a stop or shoulder. Stops on theplanes, B, B, gauge the stuff. I is a gauge for the edge of the stuff. The board containing the heading pins already sawed is placed onone of the inclines, B, B, and the chisels, being caused to descend, oper-ate to excavate on one side the intervening stuff between the pins. The. MILL AND FACTORY APPLIANCES AND TOOLS, ETC. 305 stuff being then placed on the other incline, and the gate again depressed,the excavation is completed by cutting away the opposite sides. For excavating the mortises, the doubly incHned block, B, is removed,and another gate substituted for the gate, D, in which substitute gatethe chisels are so secured as to have their lower ends in a horizontal stuff being placed on the horizontal bed and the chisels depressed,the surplus timber is excavated at a single stroke. 804. FILE-CUTTING MACHINE. The sliding head to whichthe shank of the blank is clamped is actuated by a feed screw and half nut, the latter bei
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
