Patent ID: 8327583

Claim:
A pulley assembly comprising: a base plate; a support arrangement carried on and spaced from the base plate so that the base plate and support arrangement face toward one another; a shaft carried on the base plate and the support arrangement to extend therebetween; a pulley supported on the shaft between the base plate and the support arrangement for rotation about an axis defined by the shaft; and a plurality of wall sections extending between the base plate and the support arrangement to establish connection therebetween radially outward from the shaft beyond an outer periphery of the pulley; wherein the wall sections each have a selectively adjustable length in a direction in which said wall section extends between the base plate and the support arrangement so as to enable adjustment of a distance between the base plate and the support to select a different spacing therebetween; wherein the plurality of wall sections extending between the base plate and the support arrangement consists of four wall sections that are disposed on four respective sides of the pulley and that each extend less than a diameter of the pulley along said respective side to leave a gap between adjacent wall sections at each corner of the base plate for feeding of the pulley from any said corner.