. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. uantities, and in the above proportions, along withevery successive two or three dozens of hats, suspended upon the dipping set of hats, after being exposed to the bath with occasional airings during 40minutes, is taken off the pegs, and laid out upon the ground to be more completelyblackened by the peroxydizement of the iron with the atmospheric oxygen. In 3 or 4hours the dyeing is completed. When fully dyed, the hats are well washed in runningwater. Mr. Buffum states
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. uantities, and in the above proportions, along withevery successive two or three dozens of hats, suspended upon the dipping set of hats, after being exposed to the bath with occasional airings during 40minutes, is taken off the pegs, and laid out upon the ground to be more completelyblackened by the peroxydizement of the iron with the atmospheric oxygen. In 3 or 4hours the dyeing is completed. When fully dyed, the hats are well washed in runningwater. Mr. Buffum states that there are four principal objects accomplished by his patent inven-tion for dyeing hats. 1. in the operation ; 2. the production of a better color; • 3. the prevention of any of the damages to which hats are liable in the dyeing; 4. the accomplishment of the dyeing process in a much shorter time than by the usualmethods, and consequently lessening the injurious effects of the dye-bath upon the textureof the hat. Fig. 544 shows one method of constructing the apparatus, a a is a semi-cylindrical 544 545. shaped copper vessel, with flat ends, in which the dyeing process is carried on. bbbi%a wheel with several circular rims mounted upon arms, which revolve upon an axle the face of .these rims a number of pegs or blocks are set at nearly equal distancesapart, upon each of which pegs or blocks it is intended to place a hat, and as the wheel 648 HAT MANUFACTURE. revolves, to pass it into and out of the dyein? liquor in the vat or copper. This wheelmay be kept revolving with a very slow motion, either by gear connecting its axle, c,with any moving power, or it may be turned round by hand, at intervals of ten minutes;whereby the hats hung upon the pegs, will be alternately immersed for the space of tenminutes in the dyeing liquor, and then for the same space exposed to the atmosphericair. In this way, the process of dyeing, it is supposed, may be greatly facilitated andimpro
Size: 2461px × 1016px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
