GB740946A - - Google Patents

Abstract

740,946. Fibre drafting mechanism. SACOLOWELL SHOPS. Oct. 14, 1953 [Nov. 7, 1952], No. 28373/53. Class 120 (2). Fibre drafting mechanism comprises two pairs of drafting rollers 8, 9, 10, 11, an apron 30 looped around the lower roller 11 of the second pair, a first apron supporting bar 26 disposed in advance of the'apron roller 11 and within the apron loop and a second apron supporting bar 29 disposed in the apron loop in advance of the first bar 26, the two apron-supporting bars being mounted independently of each other on the roll stand 15. The apron 30 is driven by the roller 11 and tensioned by a roller 31. Preferably, the bar 26 is mounted in slots in an adjustable bearing block 27 and the bar 29 is mounted in a cap 19 on a bearing block 14 for the lower delivery roller 9. Alternatively, the bar 29 may be separately mounted on a bearing block that is adjustable on the roller stand 15 so that the distance between the bar 29 and the delivery rollers 8, 9 may be varied. A selfweighted control roller 40 preferably rests upon the apron 30 as it passes over the bar 29. Either single-zone or two-zone drafting may be effected according to whether the pressure roller 10 is lightly or heavily weighted through a saddle 57 connected by a weight hook 56, levers 54, 53, 48 with a spring-urged pusher rod 47. A weight hook 55 loads the front delivery roller 8. Specifications 524,666 and 740,082 are referred to.