Glue applying assembly for multiple web-fed paper handling apparatus

Claim 1

An applicator adapted to be interconnected to a supply of fluid substance for applying a strip of the latter to a moving web, said applicator comprising: an elongated applicator head adapted to be positioned proximal to said web and having a forward fluid substance applying section adjacent said web and a rearward section presenting a bearing surface, said forward section including a hollow chamber defined in part by a wall having an orifice therethrough of relatively small diameter for the application of said fluid substance; slidable means positioned on said bearing surface and axially shiftable therealong; relatively thin, apertured means in covering disposition to said fluid substance applying section and axially shiftable between a first operative position wherein said aperture is registered with said orifice, and a second flow-preventing position where said orifice is covered to preclude fluid flow therefrom; means coupling said apertured means and slidable means for axial movement thereof in unision, said coupling means precluding significant rotational movement of the apertured means relative to said forward section; and means for selectively shifting said slidable means, including: first fluid pressure means coupled to said slidable means for axially shifting said apertured means to said first position when fluid pressure is applied thereto; and second fLuid pressure means coupled to said slidable means for axially shifting said apertured means to said second position when fluid pressure is applied thereto.