Cutter assembly for eavestrough-forming machine

Claim 1

A cutter assembly for an eavestrough-forming machine, said assembly comprising: a pair of support plates, each plate forming an aperture having a shape matching that of an eavestrough formed by the machine, said apertures being aligned in spaced relationship so that such eavestrough may extend therethrough and be supported by said plates; means for spacing the support plates apart, said spacing means cooperating with the support plates to form a channel having a bottom opening spaced below the apertures for the discharge of cut-outs, said spacing means forming a guillotine path extending across the apertures toward the bottom opening; a guillotine positioned between the plates and adapted to be moved along the path to remove cut-outs from an eavestrough extending through the apertures, said guillotine having a generally V-shaped blade providing first and second inclined cutting edges for severing the eavestrough; at least one of the support plates being undercut from immediately below its aperture to the bottom opening so that the cut-outs removed by the guillotine may drop freely through said opening without significant frictional contact with the plates; said guillotine having a radius formed in the upper end portion of each cutting edge for forming the upper end of the cut-out removed by the relevant cutting edge into a compact configuration so that the length of the cut-out is less than its fully extended straight length, whereby the upper end of said cut-out is not in frictional contact with the spacing means; and said V-shaped blade having a second more steeply inclined portion along each cutting edge, the second inclined portion being connected at its top edge to said radius formed in the upper end portion of each cutting edge.