Advancing material of indeterminate length – By orbitally traveling material-engaging surface – On endless belt or chain
Patent
1974-04-26
1976-03-23
Schacher, Richard A.
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
On endless belt or chain
198179, 226173, 226188, B65h 1724
Patent
active
039455475
ABSTRACT:
Tractive apparatus for longitudinally moving elongated material providing opposed tractive assemblies for gripping material therebetween by opposed and balanced gripping forces. Each tractive assembly provides a plurality of tractive members in end-to-end relation confined to circulation in a closed path and the apparatus is characterized by the provision of means for holding the tractive members in abutting relationship at least during the time they grip the material.
The apparatus is further characterized by the reduction of frictional forces on the tractive members by forcing the latter against the elongated material by sets of rolling bodies, each set of which circulates in a closed path within a respective tractive member path. Each tractive member has a material gripping face and each face is maintained in assembled relation with its tractive member by magnetic attraction to provide for ready removal and replacement of such faces.
REFERENCES:
patent: 1321463 (1919-11-01), Lloyd
patent: 2789683 (1957-04-01), Stahl
Schacher Richard A,.
Wean United Inc.
Williams Michael
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