Apparatus for making window patches

Apparatus for severing window patches from a web of patch material

• having a first surface and a second surface;
• said apparatus defining a linear feed path having an upstream end and a downstream end;
• web feeding means at said upstream end of said linear feed path;
• adhesive applying means located along said linear feed path beyond said web feeding means for applying adhesive to selected portions of said first surface of said web of patch material;
• a vacuum roll located along said linear feed path beyond said adhesive applying means and having a peripheral surface for engaging said second surface of successive said window patches with said adhesive on said first surface thereof;
• severing means positioned along said linear feed path between said adhesive applying means and said vacuum roll for severing said successive window patches of a preselected length from a leading end of said web while a portion of said leading end of said web is engaged with said surface of said vacuum roll;
• said severing means being positioned in a linear feed path between said adhesive applying means and said vacuum roll;
• and
• web positioning means located adjacent said linear movement path for positioning said web of patch material within said severing means to prevent contact between said severing means and said adhesive on said selected portions of said first surface of said web of patch material;
• and
• a vacuum conveyor positioned between said adhesive applying means and said severing means, said vacuum conveyor being operable to advance said web with said adhesive on said first surface of said web along said linear feed path from said adhesive applying means toward said severing means.

Apparatus for severing window patches from a web of patch material

• having a first surface and a second surface;
• said apparatus defining a linear feed path having an upstream end and a downstream end;
• web feeding means at said upstream end of said linear feed path;
• adhesive applying means located along said linear feed path beyond said web feeding means for applying adhesive to selected portions of said first surface of said web of patch material;
• a vacuum roll located along said linear feed path beyond said adhesive applying means and having a peripheral surface for engaging said second surface of successive said window patches with said adhesive on said first surface thereof;
• severing means positioned along said linear feed path between said adhesive applying means and said vacuum roll for severing said successive window patches of a preselected length from a leading end of said web while a portion of said leading end of said web is engaged with said surface of said vacuum roll;
• said severing means being positioned along said linear feed path between said adhsive applying means and said vacuum roll;
• said severing means including a fixed blade and a moveable blade for severing said successive window patches as said web of patch material passes therebetween;
• said fixed blade being adjacent a side of said linear feed path taken by said second surface of said web;
• said moveable blade being adjacent the side of said linear feed path taken by said first surface of said web;
• web positioning means along said linear feed path for positioning said web within said severing means relatively toward said fixed blade;
• and
• a vacuum conveyor positioned adjacent said linear feed path between said adhesive applying means and said severing means, said vacuum conveyor being operable to advance said web with said adhesive on said first surface of said web along said linear feed path from said adhesive applying means toward said severing means.