380 



BLEACHING 



or agitated. This may be dono by putting it in a revolving barrel with water, until 

 complete saturation of the powder with moisture ; the amount required is then thrown 

 into the cistern, and the insoluble matter allowed to sink. This insoluble matter must 

 not be allowed to come into contact with the cloth, as it will be equal of course to a con- 

 centrated solution of the liquor, and will produce rottenness, or burn the cloth, so as to 

 leave holes. When removing from the trough, the cloth is drawn through squeezing 

 rollers, which press out any excess of chloride of lime. 



Squeezing. The squeezing rollers or squeezers, for discharging the greater part of 

 the water or any liquid from the yarns and goods in the process of bleaching, are re- 

 presented in figs. 126, 127, the former being a side view, to show how the roller 



126 



127 



gudgeons lie in the slots of the frame, and how the shaft of the upper roller is pressed 

 downward by a weighted lever, through a vertical junction rod, joined at the bottom 

 to a nearly horizontal bar, on whoso end the proper weight is hung. In fig. 128, 

 these rollers, of birch-wood, are shown in face ; the under one receiving motion through 



128 



