As it is well known that small quantities of liquid, frequently renewed and thoroughly drained off each time, effect the most complete and economical washing, and in the shortest time, S. Rideal recommends the use of pits or vats with proper arrangements for stirring, draining and inspection. The lime scum from the pits can be used in the manufacture of fertilizers.
The glue-stock washer shown in Figs. 2 to 5, is the invention of W. A. Hoeveler (American patent), and it relates to the construction of apparatus for washing glue-stock.
In apparatus for this purpose the stock is very commonly damaged by being broken up too much, and considerable loss results, besides, from the fact that the small particles are allowed to escape with the wash-water. By the present construction and arrangement these defects are remedied and other advantages derived.
Fig. 2 is a transverse vertical section on line x-x of Fig. 3 of this apparatus;
Fig. 3 is a longitudinal vertical section of the same;
Fig. 4 is an enlarged plan illustrating the screen and hinged covers, one being opened and one closed; and
Fig. 5 is a detail of the hub, stems and part of one paddle.
The apparatus is constructed in the form of a rectangular trough-like structure, with its sides and ends, _A_, substantially water-tight by means of the double walls, _a a_. The upper portion of the interior is occupied by the swinging wash-box, _B_, semicircular in shape, with flat sides and rounded bottom throughout, the bottom being perforated.