Abstract: An electrical impulse hot hole punch apparatus is presented herein for making a tear-resistant hole in a sheet of thermoplastic film. The apparatus includes an electric heating element which is supported for selective reciprocal movement transverse to a sheet of film between a first position, remote from the film, and a film melt position at which the heating element is positioned proximate to the film. An impulse generating circuit is operative in response to the heating element being moved to its film melt position for purposes of supplying an electric current pulse to the heating element. The current pulse has a time duration on the order of one half cycle of an AC voltage pulse and is of a magnitude sufficient to heat the heating element to a temperature in excess of the melting point of the film.

Abstract: Apparatus for cutting vegetation comprising a disc mounted for rotation in a generally horizontal plane, a support member protruding from the disc for receiving a cutting blade, an elongated, rigid plastic cutting blade pivotally mounted on the support member and a counterbalance to the cutting blade on the disc for stabilizing the apparatus; the cutting blade extending radially as the disc rotates, to cut vegetation in its path.