This improvement in planing machines has especial reference to the shape of the bed and bed rollers, and its construction will be understood by reference to the engravings and the following description :— Fig. 1 is a perspective view of the whole, and Figs. 2, 3 and 4 will be hereafter described. In Fig, 1, A is the frame ; B is the planer, and C the driving wheel of the feed motion; D D are the feed and delivering rollers, ; E is the bed, and F the roller to render the passage of the stuff easy from the bed. The bed is supported in two movable pieces, G, one on each side, which can be raised or lowered to accommodate the thickness of the stuff by the screws, H H H H, and chains, I. J J J J are slats having their outer ends attached to springs, so that they keep a pressure on the feed rollers. Planing machines are generally open to the objection that they will only smooth the kind of work for which they are specially constructed, and are not capable of being altered to various applica- tions ; in fact, they are not like the majority of machines now manufactured—perfect specimens of multum-in-parvos—capable of doing a great number of things with the one piece of mechanism. Now, the great advantage of this machine is, that it can be inadfc to plane either flat pieces of wood or beveled, as will be seen by reference to Fig. 2, which is a vertical section of the bed plate, E; the fiat or horizontal top, e, can be removed by loosening the screws, a a, when the beveled part, b, will form the bed, thus placing the stuff at an angle with the planer, B, and will allow two beveled slats to bo planed at once. Fig. 3 is a section of the bed roller, F, which consists of an outer case, /*, that can be slid off, leaving a corresponding shaped roller, c, to the bed plate. Fig. 4 shows these two separate. It was patented July 28, 1857, and further particulars may be obtained from the inventors and patentees, Geo. Darby, of Richmond, Va., or J. E. Young, of Augusta, Me.
This article was originally published with the title "Darby & Young's Planing Machine" in Scientific American 13, 14, 105 (December 1857)