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US 4,060,227 AGranted
Folder
AssigneeGold Thread Machinery Co.
InventorsGlenn A. Landgraf, Fred H. Ebel
Life of this patent
Estimating the term…
Abstract
A small piece folder capable of forming both a French fold and cross fold includes a feed belt on which the unfolded articles are initially placed. Adjustable width control blades overlie the feed belt, and the margins of the article are pneumatically blown over the edges of the blades in sequence to form the French fold. The cross fold is also pneumatically initiated at the end of the feed belt.
Claims7
A small piece folder comprising
- a frame and means for continuously moving articles to be folded including a continuously moving feed conveyor mounted on the frame,
- a pair of width control blades mounted on the frame and overlying the continuously moving feed conveyor,
- means for feeding articles to be folded onto one end of the conveyor beneath the control blades,
- a pair of air tubes positioned to underly the margins of articles carried by the conveyor and having exhaust ports adapted to direct a blast of air upwardly to the side margins of articles as the articles are being moved by the feed conveyor to longitudinally fold the margins over the blades as the articles move,
- and control means including a valve for each of the tubes for sequentially directing compressed air to each to cause the folds to be made in sequence.
2 more elements
Dependencies are inferred from the claim text.