Sack net for printing press anti-smear transfer cylinder
First Claim
1. An antismear covering in combination with a transfer cylinder in a printing press, said cylinder having a longitudinal slot in the surface thereof defined by two arcuately spaced edges, said cylinder having a rim portion at each end thereof, said covering comprising a sack formed of an open weave fabric material, said sack having an opening, an elastic string attached to and surrounding said opening, said sack receiving said cylinder through said opening with said elastic string embracing said slot edges at internal cylindrical portions and extending around said rim portions internally spaced therefrom whereby said sack covers said cylinder external surface providing a smooth resilient fabric covering.
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Accused Products
Abstract
A ready-made fabric sack with an elastic string around the periphery of the sack opening to be placed over a transfer cylinder in a printing press. When placed over the transfer cylinder, the inherent resiliency of the fabric and string causes the sack to envelop the cylinder to provide a resilient fabric surface which prevents smearing and streaking of wet printed sheets.
13 Citations
10 Claims
- 1. An antismear covering in combination with a transfer cylinder in a printing press, said cylinder having a longitudinal slot in the surface thereof defined by two arcuately spaced edges, said cylinder having a rim portion at each end thereof, said covering comprising a sack formed of an open weave fabric material, said sack having an opening, an elastic string attached to and surrounding said opening, said sack receiving said cylinder through said opening with said elastic string embracing said slot edges at internal cylindrical portions and extending around said rim portions internally spaced therefrom whereby said sack covers said cylinder external surface providing a smooth resilient fabric covering.
- 9. A method of making an antismear transfer cylinder for a printing press, said method comprising the step of forming a circular cylinder with spaced rims and an arcuate slot defined by two parallel edge portions, the step of providing a resilient fabric sack having an opening to receive the cylinder and sized to fit the surface of the cylinder, providing the sack with an elastic string affixed to the periphery of the opening of the sack and placing the sack over the cylinder with the elastic string coming to rest coextensively with the edge portions and spaced rims of the cylinder.
Specification