DECOLORIZATION OP SUGAR, 
237 
ART. LI.— DECOLORIZATION OF SUGAR. 
Specification of Patent of Johann Arnold Steinkamp, of Leicester 
Square, Leicester Street, in the County of Middlesex, Gentle- 
man, for Improvement in the Manufacture of Sugar from the 
Cane, and in Refining Raw Sugar. Dated 18th July, 1848. 
Now know ye, that in compliance with the said proviso, 
I, the said Johann Arnold Steinkamp, do hereby declare 
the nature of my said invention, and the mode of carrying 
it into effect, of improvements in the manufacture of sugar 
from the cane, and in refining raw sugar, to consist in cla- 
rifying and purifying the juice of the sugar cane, as well as 
raw sugar, by means of raw cotton, and other vegetable 
fibres, cut up or otherwise divided into small lengths, vary- 
ing from about an eighth to a quarter of an inch long. 
The external gloss on the raw cotton is destroyed by 
pouring hot water upon it, turning it about, and thoroughly 
wetting it, allowing it to remain in the water about twelve 
hours; it is then ready for use. 
The apparatus required is a vessel (which I prefer to be 
rather wider in the top ;) a cock is placed just above the 
bottom to draw off the liquid ; above this there is a wooden 
frame crossed by thin strips of wood, over which a coarse 
cloth is stretched. In order to clean 100 pounds of raw 
sugar, two to two and a half pounds of raw cotton is re- 
quired, which having been prepared as before described, 
when taken from the water and pressed by the hand, will 
weigh about six or seven pounds. 
In order to clean a certain quantity of sugar, the requi- 
site weight of prepared cotton is placed in the filter, and as 
much water is poured therein as will distribute it smoothly 
and equally in the water. The water is let out of the filter 
by opening the cock, and the cotton will fall into its proper 
position. 
Upon this cotton a coarse cloth is laid, upon which a 
