Rau discloses a hollow drum connected to a vacuum line and having a pattern of holes formed in the peripheral surface thereof. The above prior rollers have holes which extend through the roller wall and which are distributed over the entire peripheral surface of the roller. In operation, the web being transported by the roller overlies only a limited number of holes. Since a majority of the holes are open to the atmosphere, an exceptionally high vacuum must be maintained within the roller in order to effectively draw the web against the roller surface.
US4277010A - Vacuum roller for transporting a web - Google Patents
John dusenbery co inc wear strip - Porn Images. Comments: 1
What is claimed is: A method of slitting elongated rolls of web material rolled upon a tubular core comprising the steps of: The method of claim 1 further including the step of rotating the circular knife blade to a circumferential speed approximately equal to the surface speed of said rotating web of material prior to cutting through said web of material. The method of claim 1 further including the step of rotating the circular knife blade in a direction opposite the direction of rotation of said rotating web of material prior to cutting through said web of material. A machine for slitting elongated rolls of web material rolled upon a tubular core comprising: The machine as recited in claim 4 further comprising second motor means for independently rotating said circular knife blade and adapted to rotate said circular knife blade at the same or different speed and direction as said circular saw blade.
US3749328A - Apparatus for winding thin film into a roll - Google Patents
The tube is connected to a source of air under pressure and the tape passes around a peripheral surface of the airpermeable member and onto hub, thereby eliminating air occlusions between the tape convolutions and resulting in a smoothly wound roll of tape. Dusenbery, Christopher St. Mautz Assistant ExaminerEdward B. A variable factor which effects the winding of the tape strips into uniformly tight rolls is the normal variations in the thickness of the web.