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    • 6. 发明专利
    • Improvements in Rotary Cutters for Wood Planing Machines.
    • GB190625751A
    • 1907-01-03
    • GB190625751D
    • 1906-11-14
    • MADSEN PETER MARENTIUS
    • MADSEN PETER MARENTIUS
    • 25,751. Madsen, P. M. Nov. 15, 1905, [date applied for under Patents Act, 1901]. Planing; tools.-In a rotary cutter for tongueing and grooving boards, planks, &c. of the adjustable type, the cutting-edges are formed on the disks a, b, c, as shown, the width of the tongue or groove being varied by turning the central 'disk relatively to the two outer disks. In a modification, the central disk may be in one piece with one of the outer'disks, and the regulation may be effected by turning the other disk. In the tongueing-cutter shown in Figs. 1 and 2, the outer disks a have slanting faces c to engage the disk b, and the teeth on all the disks have an eccentric outer contour, so that as the disk b is turned relatively-to the outer disks, the width of the outer cutter may be varied. In the grooving-cutter shown in Fig. 5, the disks have teeth of a similar contour to those in Fig. 1, but the teeth on the disk b are made slightly elastic by being turned thinner at the root on both sides, and the slanting bearing-surfaces of the outer teeth slope also wave-like alternately to one.side and the other, so as to deviate the teeth of the disk b, as shown on Fig. 5, so that the groove is a little wider than the thickness of the teeth. The faces, as shown in Fig. 5, slant peripherally relatively to each other, so that the middle teeth are only pinched at the forward edge. To ensure agreement between the disks, the central disks has a series of holes to receive a peg, passing also through a hole in the outer disks.