Patent GB-885382-A (GB)
Title: Improvements in or relating to warp sizing machines
Inventor: HOLT FRANK
IPC: D06B23/00
Filed: 1958-11-01
Abstract: Yarn or thread or synthetic filaments are fed to a sizing machine from a multiplicity of beams rotated by surface contact with driving drums and having means for controlling the drum drive to ensure that the beams run at a speed consistent with the take-up speed of an independently driven additional beam, taking into consideration any contraction or expansion of the yarn which may occur during processing.  The sizing machine may include a size box having a roller system and adjustable squeeze rollers and being in operational association with a size supply system, a multiplicity of steam heated drying cylinders fitted with temperature control means, a draw-roller at the take-off end of the machine and an electric motor for driving the take-off beam, in combination with one or more of the multiplicity of beams-carrying and -driving units driven from a common shaft by the electric motor.  As shown in Figs. 1 and 2, a sizing machine of known construction is associated with a plurality of steam-heated drying cylinders, one of which is indicated at 15. An infinitely variable speed gear 16 is provided, the output shaft 16a of which is coupled to the driven shaft of a worm gear unit 17, the output shaft of which is coupled as shown at 18 to the driving shaft of a size roller 11 of the roller system.  The input shaft 16b of the variable speed gear 16 is furnished with a sprocket wheel 20 wrapped by a chain 21 which also wraps a sprocket wheel 22 on the shaft 23, driven by way of an infinitely variable speed gear from the main electric motor driving the take-off beam.  A beam driving unit may comprise two side frames 24, 25 spaced apart and a drum 29 faced with cork and mounted on a shaft 28.  Frames 24, 25 are provided with brackets 30, 31 which co-operate with other brackets 32, 33 to form slideways 34, 35 respectively, the latter affording a bearing for the shaft 36 of barrel 37.  Similarly, slideways 35 afford a bearing for shaft 38 of a second barrel 39.  Secured to the outer face of the side frame 24 is a bracket 40 upon which is supported a worm gear unit 41 which is in operative connection with the drum driving shaft 28 by means of a coupling 42.  Worm gear unit 41 is connected by chain and sprocket gearing 43 with the output shaft 44 of an infinitely variable gear 45, the input shaft 46 of which is connected by chain and sprocket gearing 47 with the shaft 23. Shaft 23 <PICT:0885382/IV (c)/1> <PICT:0885382/IV (c)/2> <PICT:0885382/IV (c)/3> is journalled in bearing brackets 48 secured to th side frame 24 and, as shown, is formed in sections coupled together as indicated at 49.  Side frames 24, 25 are each furnished at opposite top corners with vertical brackets 50, 51 respectively, each pair of brackets affording a bearing for a guide roller 52, 53 respectively.  Beams B1, B2 wound on beam barrels 37, 39 are maintained in driving contact with the surface of driving drum 29 by reason of the inclined slideways, 34, 35, which permit the beams to descend by gravity as their diameter decreases as the yarn is drawn off.  Yarn from beam B2 is first led around guide rollers 53, 52 and with yarn from beam B1 is led around a guide roll on the adjacent end of the sizing machine around rollers 11, 12 and between size rollers 13, 14 to the drying cylinders 15.  In a modification (not shown) the infinitely variable speed gear and worm gear unit are coupled to the shaft of the driving drum by a brake-operated clutch coupling comprising a cylindrical casing freely mounted on the shaft of the worm gear unit, a sun pinion fast on the projecting end of the shaft, a second cylindrical casing fast on the adjacent projecting end of the shaft of the driving drum and formed with an interval annulus of gear teeth, a set of planet pinions rotatably mounted on the first mentioned cylindrical casing and enmeshed with the sun pinion and with the toothed annulus, and a brake strap embracing the first mentioned cylindrical casing and adapted to be operated to prevent turning movement of the casing.