US24016A - Improvement in apparatus for evaporating saccharine juices - Google Patents

Description

D. l. DURFEY.

Evaporating Pan.

n Patented May 17, 1859.

Inventor: `@faQ/.Zag

PHOTO-L THO.CU.N.Y. (OSBORNE'S PROCESS l Witnesses,

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@Ntra raras PATENT eine DANIEL INGHAM DURFEY, OF ORO'ION, OHIO.

IMPROVEMENT IN APPARATUS FOR EVAPORATING SYACCHARINE JUICES.

Spccilication forming part of Letters Patent No. :MAPRQL dated May 17, 1559.

Z'o alt' whom if; 71mg/ concer. I: i

Be it known that I, DANIEL INGHAM DUR- FEY, of Groton, Licking county, Ohio, have invented new and useful Improvements in4 j tion thereof.

The pans A l 2 3 4t 5 are rectangular in form, and are so set in the masonry ofthe furnace G as to form an inclined range, commencing with the final concentrator or teache7 5, and thence rising, step by step, to the clariiier A, which receives the crude juice from the mill. Sluices E, placed alternately on the right and left, down the range, enable the concentrated sirup to be drawn off from the bottom of each pan to that of its immediate successer in the range, their alternate arrangement preventing a too direct discharge of sirup in ease several slnices should be open at once. A small portion of thebottom of each pan on its discharging side is made of equal depth with its immediate successor in the range, so as to create a circulation in which the more concentrated juice, as fast as formed, flows into the well thus provided, and, having only a very small portion or surface of its' volume presented to the action of the fire, is thereby saved from being burned or caramelized, while at the same time the less concentrated juice may be exposed in a thin or shallow sheet or film to the action of the llame ih often or eonstantlyrenewed installments, which is, under the conditions or circumstances, found most effective for uniform evaporation. The juice, in passing from the clarifier A to the pan l, is caught in a strainer, D, which, arresting the grosser portions of the scum and feculent matters, enables them to be ladled back again into the clarifier.

G is the nre-place; G, its doors.

H is a damper adapted to be slid beneath the bottom ot' the teache 5. This damper is 1 used in several different ways, according to the changing requirements of the siru p. When an excessive heat is required to the bottom of the teaehe, as at the first commencement, the damper H is withdrawn entirely and its place of insertion in the fire-front closed by a door,

Vhen the damper is inserted inversely to the position represented in the drawings, it modifies the heat and presents it to the bottom of the pan at a uniform temperature throughout the entire surface. Vhen it is necessary for the juice or sirup in the teache to be protected wholly from the action of the fire-as for cooling down before drawing offthe damper is inserted in the position shown in the sectional View, so as, while excluding the fire, to admit astream of cold air between the damper and the teache bottom, as indicated by arrow. The damper H can also be used to contract the mouth ot' the flue K, so as to damp the fire and to reduce the temperature of the flue beneath the upper pans. The top of the flue K is formed by the gradually-ascending surfaces of the bottoms of the upper pans, and

the bottom ofthe liuc K, being parallel there-v to, has a corresponding shape. This form and arrangement of the l'lue facilitates the draft and holds the heated products of combustion well up to the pans. The upper part of the iue, immediately beneath the clarifier, has a transverse partiti-on, L. It has also on each side a rectangular opening or passage, O, to the external air. Each opening O is guarded by a valve, I), which may be hinged to the outside of the flue, as shown.

Hinged to the partition L is a damper, Q, corresponding to the Whole area of the flue at thisplace. The air-valves P and damper Q are connected together by links R, so that an opening of the air-passage O is, by means ot' the rods S, accompanied by a corresponding closure or. partial closure of the damper Q, and vice versa. These simultaneous movements of the damper Q and air-valves P act very effectually to cool down the contents of the clarifier, so as, as much as possible, to discharge only clear liquor into the pan 2.

M is a flue-door.

N is the smoke-stack.

This apparatus under careful management produces sirup free from all taint of scorching, being of a pale amber or golden hue,comparable to new honey. f

I claim herein as new and of my inventionl. Adeseending` series of evaporating-pans, 3. The strainer D in the described combieaeh having n Well or depression on the side nation with the clarifier A, operating in the next its immediate successor in the range, manner and for the purpose set forth.

eloszrble by sluiees, substantially as set forth. In testimony of which invention I hereunto 2. The arrangement of the sluiees B alterset my hand.

nately on the right and left of the range,when DANIEL I.- DURFEY. used in the described combination with the Nitnessesz wells or depressions above referred to, for the l WM. F. SCOVEL,

\ ANsoN CLARK.

purpose set forth.

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