US26717A - Improvement in apparatus for evaporating - Google Patents

Description

J. SUTTON.

Evaporating Apparatus.

Patented y 3,

:Yr/es ses MLM N. PETERS Phalo-Lhugnyw. Wllhinglun. ILC.

UNrTnio STATES PATENT Ottica. j 0

JOHN SUTTON, OF NEV YORK, N. Y.`

l IMPROVEMENT IN APPARATUS `FORl EVAPORATIiCaz` Specification forming part of Letters Patent No. 26,717, dated .zlnuary 3, ISCO.

To all whom it may concern,.- I

Be it known that I, JOHN SUTTON, of the city, county, and State of New York, have in,- vented certain new and useful Improvements in Apparatus for Evaporating Juices and .Solutions; and I do hereby declarethat the following is afull, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specih'cation, in which- Figure 1 is a vertical section of an evaporating apparatus With my invention applied. Fig. 2 is a plan of the same with the portion above the pan removed.

Similar letters of reference'indicate corresponding parts in both figures.

My invention consists in so applying asteamcoil or other heater, in combination with an evaporating pan or vessel, that it shall be capable of iloating upon or in and at or as nearas may be desiredl to the surface of the liquid, and hence of causing the evaporation to take place constantly at the surface or at the same distance therefrom, Whatever may be the depth or quantity of the liquid in the vessel, by which means some important advantages are obtained over the usual mode of applying steam coils or heaters for evaporating purposes.

My invention further consistsin the employment, in combination with a steamcoil or other i heater that is. capable of floating upon or in the liquid in an evaporating-vessel, of means of elevating the same above the surface of the contents of the vessel, or of sustaining the same at various distances below the surface of the contents of the vessel, to permit such manipu`` lations or produce such effects as may be dei sirable. A i

To enable others skilled in the art to'which my invention is applicable to apply and use my invention, I will proceed to describe its Vconstruction and operation.

In the apparatus represented, the evaporatingvessel A consists of an open pan, and the heater B consists of a steam-coil. C is the steam-pipe, and D the pipe forletting off the Water of condensation from the heater, both made of flexible material, to permit the rising andfalling of the heater, thepipe C entering the vessel at the top, and being furnished With a cock, D, to regulate the supply of steam, and

the pipe D connecting with an outlet-cock, F,

close to the bottom ofthe vessel, for regulating y the escape of the Water of condensation. The

heater is represented as beiugifurnished with f y hollow metal floats G G, of circular form,which keep it fioati ng just below; the surface ofthe liquid; but instead of being `thus furnished` with floats, it may be made of itself buoyant' enough to float or be suspended and balanced, by- Weights or any suitable means to keep it at` the surface of theliquid, orat a desirable dis-i, i tance above or below the said surface. H is i a cock near the bottom of the pan, for dravvlV 1 ing ofi its contents.

The heater may be heated by steam, hot air, or hot Water, according` to the nature of the o liquid substance to be evaporated. It may be .y of other forms besides thatlof the coil`-as,fforI instance, a gridiron series of pipes or a hollow` circular disk.

In applying the floating heater to a close b evaporating-vessel-a vacuum pan or still, for instance-the portion of the steam-pipe C im mediately connected with the heater may be` straight, and passvertically through a stuff# ing-box in the center ofthe` head of the pan,`f i l and the portion of the Water-pipe D iirlmedi-I ately connected with it may pass vertically through a stuffing-box in the bottom of the" pan. Instead of the pipes of flexible material, metal pipes with Working elbewjoints may be .T

used. 4

Among the advantages of making the heater' d float near the surface of the liquorthe followf` ing may be enumerated: First, theevaporation may be commenced almost immediately when the steam or other heating medium islet into x the heater, thus economizingtime; second, less fuel is required to evaporate a given quantity of liquid than by a heater that is stationary. near the bottom of the vessel, asthe liquid is` y b boiling only near the surface, While the lower i i strata are comparatively cool, and thus com-1 i paratively little heat `is lost by radiation froml the sides and bottom of the vessel; third,`in

cannot be affected by a too great heat, or be reboiled. A

I,.Fig. 1,is a windlass arranged over the pan with a rope or chain, J, to connect the heater, which is represented as being made with a bow, K, to attach the said cord or chain.. This windlass is furnished with a ratchet-wheel, L, to be engaged by a properly-applied pawl, M. This windlass serves to Withdraw the heater out of the liquid, or to raise it entirely above the p an, if necessary for the purpose of facilitating the discharge of the contents of the pan, or the cleaning out ofthe pan or of the heater, or of permitting the repair of the pan or heater or their connections. It may also serve, if the hea-ter be properly loaded, to prevent it iioating, to suspend the heater at any desired distance below the surface of theliquid or above the bottom of the pan, as may be desirable in certain processes or at a certain stageof any process.

Instead of the windlass l and rope J, an endless ehain or band may be arranged to run over a pulley above the vessel, and a pulley within and near the bottom thereof, and the heater, so connected with the said band or chain that by working the upper pulley it (the heater) may be elevated above or depressed as far as desirable below the surface ofthe liquid, and so secured by a properly-applied ratchet and pawl. This chain or band, when the pawl is disengaged from its pulley, need not interfere with the floating of the heater when it is dcsired to loat. Other arrangements of hoist ing apparatus may be employed in connection with the heater. l

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

l. Se applying a steam-coil or other heater, in combination with an evaporating-vessel, that it may be independent ofthe vessel in its action, and may `float in and rise and fall with the surface of theliqnid in the vessel, substantially as and for the purpose herein described.

2. The employment, in combination With a so-applied heater, of means of elevating` it wholly above and depressing it Wholly below the surface of the liquid, as may be desired, substantif-illy as and for the purposes herein specified.

JOHN SUTTON.

XVilnessses lt. S. SrnNonn, \VM. TUseH.

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