Patent GB-190700780-A (GB)
Title: Improvements in or relating to Dyeing Bleaching or Washing Apparatus
Inventor: DESTREE LOUIS
Filed: 1907-01-11
Granted: 1907-07-18
Abstract: 780. DestrÚe, L., and Wiescher, A. Jan. 11. Bleaching; dyeing; washing.-Apparatus for treating, in particular, a continuous band of hanks comprises a vat, which contains a series of skeleton compartments and is provided with intermediate guiding-rollers, mechanical arrangements to move the band to and fro, and squeezing-rollers; the band accumulates in the compartments. A modification for indigo dyeing &c. is described, and comprises an arrangement of rollers for air oxidation. The apparatus is stated further to be applicable as a "roller- "tank," permitting of dyeing the band by a continuous passage in a stretched condition on the guidmg-rollers ; as a dipping and washing tank; as a " double jigger " ; and for use for bleaching and dyeing with alizarin, aniline colours, indigo, wood, and extracts &c. In the tank 1, two apertured or perforated partitions are arranged parallel to, and separated by small spaces from, the side walls thereof. These spaces may contain heating-pipes, and the dyeing-bath may be introduced through them. To these partitions are fixed, by means of bolts 11, a number of apertured transverse partitions 4, which may be formed of vertical bars connected at the bottom by curved closing-pieces 5. Each compartment so formed is divided into two parts 7, 8 by a partial partition 9, terminating above the bottom in an edge either rounded or provided with a roller. The whole structure can be easily removed from the vat 1 for cleaning &c. Rounded wooden pieces or rollers are fixed to the perforated sides near the top to guide the connecting clips of the band of hanks, and to keep it in position on rollers 13, each journaled above a partition 4. The rollers 13 are driven through attached pulleys or chainwheels 16 by belts or chains 17 from a pulley or chain-wheel on the main shaft 19 carried on a frame 21. The shaft 19 carries a squeezing-roller 22 which works with a superimposed roller 23, journaled in two levers 24 pivotally connected to vertically guided and weighted rods 27. The squeezing-rollers may be put out of operation by turning a hand-wheel 29, the shaft 30 of which carries two cams 31 adapted to engage lugs 32 on the rods 27 and so raise the upper roller 23. The main shaft 19 carries two loose pulleys 33, 35 and a fast pulley 34, over which run two driving belts, one straight and one crossed, controlled by forks 40, 41 attached to a cross-bar 38 which runs between pairs of rollers 39 on guides 37. The squeezing- roller 22 and guide-rollers 13 are rotated in one direction or the other, according to which belt is on the fast pulley 34. The belts may be shifted automatically at predetermined intervals by a device which consists essentially of a screw spindle 47, and a traveller 46 which rides thereon and engages with adjustable lugs 45 upon a movable graduated rail 44, connected with the cross-bar 38 by balanced levers 42 which oscillate on horizontal pins 43. The screw spindle is driven by a belt 50 connecting a fixed pulley 49 with a fixed pulley 52 on the main shaft 19. Loose pulleys 48, 51 are also provided. To commence operations, the reversing-device is thrown out of action, either by removing one of the lugs 45 and disengaging the traveller 46 from the screw-thread of the spindle 47, or by placing the be'ts 50 on the two loose pulleys 49, 52. A cord is attached to the end of the band a of banks, and by its use a regular accumulation of the band of hanks is caused to occupy the first part 7 of each compartment, the correct belt being placed on the driving-pulley 34 to drive the rollers 13 in the forward direction. The machine is then stopped, the traveller 46 placed in position, and the two lugs 45 are adjusted upon the rail 45 according to the length of the band a accumulated in each compartment. The second belt is placed on the driving-pulley 34, causing the rollers 13 to be rotated backward and to move the accumulations slowly and regnlarly from the first halves of the compartments 7 into the second halves 8. When this is done, the traveller 46 engages with one of the lugs 45 and so, by means of the rails 44, 38, levers 42, and forks 40, 41, shifts the belts on the pulleys 33, 34, 35 and reverses the motion. The hanks then return to their first locations 7. These to-and-fro movements are repeated until the dyeing or other operation is finished; the hanks then being folded in the second parts 8 of the compartments, the band a is pulled over the last roller 13 and between the squeezing-rollers 22, 23, below which is arranged a suitable pan 55, and is conducted to a mechanical folding device or other apparatus for further treatment. In a modification adapted for cases where the hanks remain in the liquid during the whole operation, e.g. indigo dyeing, the upper edges of the partitions 4 and the rollers 13 are arranged to be constantly immersed. The rollers 13 are also combined with squeezing-rollers. Above the tank is arranged a frame carrying upper and lower rollers, the former being driven from the main shaft. When dyeing is complete, the band of banks passes slowly over these rollers and is subjected to the action of the air, to produce the necessary oxidation of the dye, and then passes to a folding-device &c.