US108861A

US108861A - Improvement in the-manufacture of sugar

Info

Publication number: US108861A
Authority: US
Publication date: 1870-11-01
Anticipated expiration: 1887-11-01

Description

amt tatrt ARNOLD WEIOHERT,

or NEW YORK, NY,

Letters Patent-No. 108,861, dated November 1,1870,

IMPROVEMENT m THE-MANUFACTURE 0F SUGAR.

The Schedule referred to in these Letters Patent. and making part of the same To all whom it may concern:

Be it known that I, ARNOLD WEIGHERT, of the city, county, and State of New York, have invented a new and usefui Improvement in the illanufacture of Sugar; and I do hereby deelaregthat the following is a full, clear, and exact description of the same.

In the manufacture of raw. sugar from cane by the process or processes in common use on plantations, there is an enormous waste owing to so large a proportion of crystalline or erystallizable sugar beingvdegraded into non-crystalline sugar, and in that state remaining in the molasses.

. With a view to "obviate this waste, and to supply to the sugar-refiner the entire saccharine product of the sugar-cane, there has recently been adopted in some places,ito a limited extent, aplan of evaporating the juice'without attempting anything likelperfect or reg ular crystallization, orthe separation-of the crystal-' line and non-crystallineproducts, into aconglomerate mass which is known as concrete; and-in this state the sugar has been shipped to market. 7

The only apparatus which has heretofore, so far as I have known, been used successfully, or the only one which has been used to any extent for the manufacture of this concrete, has been one of English manufac: ture, specially contrived for-the purpose, and known as a concretor.

This apparatus performs the evaporation in the atmosphere, and. besides being somewhat complicated and difficult to manage, is very wasteful of fuel.

I have foundby experiment that. the concrete can I be successfuliy manufactured in the vacuum-pan, and that in all places where there is a plentiful supply of water it can be so manufactured more economically than by the concretor; and A This invention consists in the manufacture of conerete sugar by evaporation in thevacuum-pan.

In carrying out the process, any kind of vacuum-pan may be used, and the process may be performed throughout in a single pan or system of pans; but I find it better, on account of econonomy and expedition, to evaporate the cane-juicelto a density of about 30 Beanme, in onepan or system of pans, and then -.to transfer-it to'another pan or" system of pans, in

which I continue the evaporation until the concrete is obtained, and to fill up the first pan or series again with fresh juice, keeping ouepan or system of pans employed in the preparatory evaporation, and

the other in the final evaporation.

, I prefcrtouse for the preparatory evaporation the systemof vacuum-pans known in the manufacture of beet-root sugar as triple-effet, and, in thefi'nal evaporation, a simple vacuum-pan such as is commonly'used in the manufacture of cane-sugar.

The juice',"before being introduced to the first pan or series of pans, is simply subjected to the usual defeoating and clarifying process.

\VhatI'claim as my invention,.and desire to secure by Letters Patent, is-

' 1 The manufacture of concrete sugar by the evaporation of the juice in the vacuum-pan, substantially as herein described.

- ARNOLD W'EIOH-ERT.

\Vitnessesr FRED. HAYNES, Fern). Tusom