GB490498A - Improvements in or relating to the milling or scouring of textile fabrics - Google Patents

Abstract

<PICT:0490498/IV/1> The pressure-regulating device of a machine for milling and scouring textile fabrics is adjusted according to the highest permissible pressure which may be given to the fabric and the minimum permissible width of the gap between the pressure rollers is positively regulated by adjustable stops. The yielding top pressure roll d, Figs. 1, 2, of an apparatus for use in milling or scouring textile fabrics is carried by levers e pivoted at f to the main machine framing and pivotally attached to their free ends are rods i guided near their upper and lower ends for movement in a vertical direction. The rods i are screw-threaded along the centre portions and are fitted with bushes k which by means of worm wheels m, worms n and a shaft o can be moved vertically in guides l along the rods to control the action of upper and lower springs t, s disposed respectively between the bushes k and the upper and lower guides u, r for the rods, the arrangement being such that when the bushes k are pressing against the lower springs s, the upper springs t do not press against the upper guides u. A pointer v moving over a scale w indicates the pressure exerted by the upper roll per unit width of the felt f1. This scale w is graduated on its inner edge for soft fabrics and successively outwards come scales for medium soft, hard fabrics and, on the outer edge, absolute pressure of top roller in tons. Wedge-shaped keys y bearing scales e1 may be moved in and out between collars x at the top of the rods i and the tops of the upper guides u by means of a transverse shaft g1, worms and worm wheels d1, b1 and sleeves c1 on screwed rods a1 which are attached to the keys y to indicate the width of the gap between the upper and lower press rollers a, d, which gap is positively set in accordance with the minimum permissible for the fabric to be treated.