Importance

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Abstract

An end pivot webguide which may be economically fabricated from stock material and eliminating many cast components is disclosed including pivot arms formed from bar stock and roller frames formed from angle stock. The pivot arms are formed by drilling passages including annular shoulders for receiving radial ball bearings in the bar stock for rotatably mounting first and second pivot pins. The use of radial ball bearings allows the pivot pins to accept thrust forces in an axial direction such that the webguide of the present invention utilizes four bearings of identical type rater than six bearings of three different types as in prior webguides. The pivot arm is symetrical such that one of the pivot pins may be nonrotatably secured to the webguide base and the other pivot pin may be nonrotatably secured to the roller frame. Bearings in the guide rolls rotatably mount the guide rolls on screws removably and nonrotatably secured to the roller frames. Different sized guide rolls may then be utilized by simply selecting corresponding sized angle stock forming the roller frames.

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First Claim