Patent ID: 8302516
Filing Date: 2012-11-06
Classification: B26D,B26F,B42P,Y10T

Abstract:
1. An apparatus for punching at least one hole in a sheet such as of paper and attaching a reinforcing ring onto the sheet around the hole, comprising: a platform; a hole punch rod mounted to and extending outwardly from said platform positioned to match a desired location for a hole on a sheet, said hole punch rod having a rod cutting end extending away from said platform; a sheet panel having a ring passing hole positioned to register with the longitudinal axis of said punch rod and sized to pass a reinforcing ring; a hole punch plate generally parallel to and spaced forwardly from said sheet panel and having a hole punching port positioned to register with the longitudinal axis of said hole punch rod, said hole punching port being sized to pass said rod cutting end closely enough to cut a hole into a sheet placed between said rod cutting end and said punching port; return spring means biasing said sheet panel and said hole punch plate forwardly from said platform; and panel advancing means for advancing said sheet panel and said hole punch plate toward said platform against biasing of said return spring means a sufficient distance to pass said rod cutting end through a sheet between said rod cutting end and said punching port and through said punching port and along said punch rod toward said platform a sufficient distance to cause the sheet to contact a reinforcing ring fitted around said punch rod.