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US 4,378,822 AGranted
Spiral binding machine for spirally feeding a spiral binding element
AssigneeMorris Brothers (Aldershot) Limited
InventorLeslie J. Morris
Life of this patent
Estimating the term…
Abstract
A machine is disclosed for spirally feeding a spiral binding element. A mandrel guides the element. A driving wheel rotates the element on the mandrel. A location member engages in the element's spiral whereby the element is fed along the mandrel when the driving wheel rotates the element.
Claims13
A spiral binding machine for spirally feeding a spiral binding element, said machine comprising:
- a fixed structure, a stationary mandrel supported on said fixed structure for supporting a spiral binding element received thereon;
- a driving wheel mounted in said machine for rotating a spiral binding element on said mandrel by gripping said element between the periphery of said driving wheel and said mandrel, the periphery of said driving wheel being frictionally engagable with said element;
- a single support pin connected to said mandrel and by which the mandrel is supported on said fixed structure, said mandrel having a plain ungrooved cylindrical external surface, said pin extending between adjacent turns of the spiral binding element for, in operation of the machine, being in direct contact with a turn of the element and providing the entire axial reaction contact of the machine with the element;
- said machine having an open unobstructured space on the opposite side of said pin from said driving wheel for accommodating different size spiral binding elements;
- and means for rotating said driving wheel.
2 more elements
Dependencies are inferred from the claim text.