US327900A - William h - Google Patents

Description

W. H. ROGERS.

(No Model..

DRU-3R.

Patented Oct. 6, 1885..

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UNTTE STATES PATENT OEEIcE.

VILLIAM H. ROGERS, OF WILLIAMSON, NEV YORK.

DRIER.

v SPECIFICATION forming part of Letters Patent No. 327,900, dated October 6, 1885.

Application filed February 24, 1885. Serial No. 156,715.

.T0 all whom it may concern:

Beit known that I, VILLIAM H. BoGERs, of Villiamson, in the county of W'ayne and State of New York, have invented a certain new and useful Improvement in Driers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which- Figure l is a longitudinal vertical section of a drier showing my improvement. Fig. 2 is a horizontal section of the same in line x n: of Fig. 1.

My improvement relates to driers for fruits, vegetables, and other uses, and is of that kind where the heated air is carried up vertically through flues on opposite sides of two dryingchambers, thence horizontally through and between the trays located in said drying-chambers, thence downward to the bottom of the drying-chambers, and thence upward through a central flue or exit-pipe, where it finally escapes, carrying the moisture off with it.

Heretofore in this class of driers the ability to pass off the moisture and perform the drying operation has depended on the natural' draft ofthe heated air through the apparatus, which, owing to the want of power in the draft, and the indirect and circuitous passage through the apparatus has rendered the operation ineffective.

My invention consists in combining 4with such an apparatus fans or blowers located in the vertical flues that receive the heat, and forcing the air forward under pressure, whereby an active current is produced through all parts of the apparatus, and the moisture removed, producing an effective drying action, all as hereinafter more fully described.

In the drawings, A shows a casing, which may be of any desired form and construction. B B are two drying-chambers in the opposite sides of the case, and O .is a central due or (No model.)

chambers, the trays being placed at such a distance apart that sufficient space is left between the trays for the passage of the draft. In the drawings three sets of chambers are shown in each chamber. These trays are so arranged that a vertical flue-space, G, is left outside the trays, and a corresponding vertical fiue-space, H, inside the trays, next to the escape-flue C. The bottom of flue C is open, but is provided with valves or dampers b b, by which it may be closed at any time. Beneath the trays in each chamber is a clear passage, c, which allows the passage of such vapor as collects there and has a tendency to remain at the bottom of the chambers. Such vapors will be carried off from the passages c c through the escape-Hue.

f is a partition in the escapeilue O, the same extending up from the bottom of the case to a point above the top of the chamber, and dividing the center flue into two distinct passages at the bottom, but uniting at the top, as shown.

L L are vertical fans or blowers, located in the outside flue-space, G, of each chamber. Two or more may be used in each due-space. They extend the whole height of the charnber, covering all the trays, and are so feathered as to inipel the air forward to the exitflue.

The heat from the furnace will rise by natural draft into the fiue space G. At this point the fans take and force it forward hori- Zontall y through and between the trays into the inner flue-space, H, and thence downward into the exit-fiue O, when it finally escapes. By this means the heated air is under constant pressure at all parts of the chamber, and creates a regular and uniform draft through all the trays from bottom to top, and effectually carries off all the moisture. It obviates the difficulties heretofore experienced in the passing of the heat through the apparatus, which has solely been done, so far as I know, simply by the natural draft, and this is not sufficient to establish proper circulation to do drying. By using the fans or blowers at the sides of the chambers, and producing a posi tive blast inward, the proper circulation is established and maintained.

This apparatus is specially adapted to drying fruits and vegetables, but may be used for IOO

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