562

DYEING AND CALICO PRINTING.

mixtures. The pan is then emptied, and the colour carefully strained into asuitable tub or bowl. The objedt of straining is to remove all gritty particlesintroduced by any of the materials, which would have a very injurious effedlif suffered to remain.

A straining machine, invented and patented by Dollfus and Mieg, has beenintroduced into this country, and is used with success. It is represented in

Fig. 34. Fig. 35.

Figs. 34 and 35, the former giving the side and the latter the front elevation.a is the cylinder, strengthened above and below by the belts, B and a. Thebottom plate of the cylinder, which is movable, is supported by the hooks, c.This plate is removed when required by means of springs fitting on D, andadting on two of the hooks, c, so as to withdraw them from under the grating,b. Upon a lies a second ring, d, supporting the handle, e. The tops of the