US379145A - wyman - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1.

' J. A. R. WYMAN.

WOOD DRYING KILN. No. 379,145. Patented Mar. 6, 1888.

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WOOD DRYING KILN.

No. 379,145. Patented Mar. 6, 1888.

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(No Model.) I 4 Sheets-Sheet 3..

J. A; R. WYMAN.

WOOD DRYING KILN.

No. 379,145. Patented Mar. 6, 1888.

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4 Sheets-Sheet 4.

Patented Mar. 6, 1888.

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J. R. WYMAN.

WOOD DRYING KILN.

UNITED STATES PATENT OFFICE.

JOSEPH ADKINSON BITCH WVYMAN, OF SOUTH GARDIN ER, MAINE, ASSIGNOR TO THE WV. 0. HUNTLEY KINDLING WOOD COMPANY, OF SAME PLACE.

WOOD-DRYING KlLN.

SPECIFICATION forming part of Letters Application tiled October ll, 18256.

Patent No. 379,145, dated March 6, 1888.

Serial No. 215.972. (No model.)

To all whom, it may concern:

Be it known that I, Jos PH ADKINSON BITCH WYMAN, of South Gardiner, in the county of Kennebec, in the State of Maine,

have invented a new and useful Improvement in Wood-Drying Kilns; and I do hereby declare the same to be described in the following specification and represented in the ac-- companying drawings, of which Figure 1 is a plan of a duplex kiln, showing the arrangement of its severalchutes or eduction-mouths, 860. Fig. 2 is a vertical and transverse section; Fig. 3, a sectional view taken longitudinally of the kiln through one of its vertical chambers, and exhibiting the arrangement of the eduction-mouths at the lower part thereof. Fig. 4 is a vertical and longitudinal section, and Fig. 5 a top view, of

the distributer to be described. Fig. 6 is a view on line at of Fig. 5.

The main part of the kiln is a building, A, rectangular in its plan, it being provided on its opposite sides and near its bottom with two benches, E, (see Fig. 2,) they extending lengthwise of it, and serving to receive the dried wood in its passage from the kiln, the workmen who handle it standing or sitting at such benches.

A partition, 0, extending longitudinally through the building at its middle, together with sundry transverse partitions O, divide the interior of the structure into receivingchambers, opening out of the lower part of each of which is a pair of eduction hoppers or mouths, B, which are arranged as shown in Figs. 1, 2, and 3-that is, they are side by sidc and each extends entirely or substanially across the lower part of the chamber, one of themhavingitslowerend atthefront,whilethe other has its lower end at the rear, of the chamber. This arrangement of the said mouths prevents the wood from becoming improperly clogged or massed at the middle part of the chamber, and causes it to be discharged toward opposite ends of the chamber. From each eduction-mouth a spout, D, leads in an inclined direction, and opens through the side of the building and directly upon the bench E,

each spout as well as each eduction-mouth being formed of strips or bars of wood having spaces between them through which air can readily circulate or pass. Below each of the chambers and its eduction hoppers or months and their spouts is atubular heat-radiator, F, inclined as shown in Fig. 2, it being in practice provided with means of introducing steam into it for the purpose of heating it, in order to heat the currents of air that may pass up through it, such radiator being supported in part by rods G, extending down from the bottom of the chamber.

In front of each radiator is an inclined valve or door, H,which, arranged as shown in Fig.

2, serves to close or open more or less the pas sage a between the radiator and the median 5 wall or partition 1) below the door a, such paS- sage being for the introduction of more orless cool air into the heated air to reduce ils temperature as may be required. The air-inducts are shown at I in Figs. 2 and 3.

In the upper part of the kiln, and above the long partition C, is an attic, up to which the short pieces of wood to be dried are to be introduced by an elevator, 0, (see Fig. 4,) or by other suitable means, they being discharged upon an endless belt or carrier, M, supported on wheels N and extending lengthwise through the kiln or building and immediately over the partition 0. This belt or carrier is provided with a series of lags, L, of like size, arranged 8O on and fixed to it at equal distances apart.

There extends under the top as well as under the bottom portion of the belt or carrier a tapering platform, (I. (See Figs. 2 and 5.) These platforms, with the endless belt or car 8 rier, its lags and supporting wheels, I term the -distributer, its office being to conduct the pieces of wood along over the partition 0 and to discharge them into each of the chambers. As they are carried along the pieces of 0 wood fall from the distributor laterally and drop into the chambers.

In the sides of the attic are ventilators P, for allowing the escape of the moisture from the wood while being kilndried. In the operation of the kiln, while the chambers are charged with the small sticks or pieces of wood, air heated by the radiators passes upward through the eduction-mouths and their spouts andinto and through the charge of wood, fully escaproo ing through the ventilators, and carrying with it the moisture evaporated from the wood. As the dried wood may be extracted from the spouts, other wood will fall by the action of gravity into and through them. In proportion as the dried wood is discharged from the kiln, such kiln is to be supplied with fresh wood by means of the elevator.

Several days are usually required for the wood, after being introduced into the kiln, to be withdrawn therefrom, the workmen at the benches continuing in the meantime to withdraw and bundle the wood.

By having the interior of the kiln divided into chambers, as set forth, the heat is distributed to better advantage through the charges of wood than would be the case were the kiln not provided with partitions, as represented.

I do not claim a kiln, as shown in the United States Patent No. 260, 567, in whose lower part is a series of discharging-mouths, neither ofthe next adjacent two of which extends entirely across the kiln, nor does one discharge at the front and the other at the rear, as is the case with the pair of discharging-mouths of each chamber of the kiln heretofore described. Furthermore, neither of the disehargingmonths ofthe kiln shown in said Patent No. 260,567 has airpassages through its sides, but only an air-educt in its lower end. Nor do claim a kiln having in its upper part an endless apron or belt. as

, shown in the United States Patent No. 270,359,

which has no lags to it, nor any tapering platform arranged with it, as is the ease in the distributer as hereinbefore described.

I claim 1. A wood-drying kiln, substantially as described, consisting ofa chamber having in its lower part two eduction mouths provided with air-passages through the sides of each, and each extending entirely across the chamher, and both arranged side by side and so that one shall discharge toward the front and the other toward the rear of the lower part of such chamber, as set forth.

2. The combination of a wood-drying kiln, consisting of a chamber having in its lower part two eduction'mouths provided with airpassages through the sides of each, and each extendingentirelyacrossthechamber,audboth arranged side by side and so that one shall discharge toward the front and the other toward the rear of the lower part of such chamber, as set forth, with an inclined spout leading from each of them to and over a bench, as represented.

3. The distribnter, essentially as described, consisting of the endless belt or carrier, its sup ports and lags, and the tapering platform or platforms, arranged with such belt or carrier as represented.

4. The combination of the distributor, esselr tially as described,- composed of the endless belt or carrier, its supports and lugs, and the tapering platform or platforms, arranged as set forth, with one or a series of kilns, each consisting of the chamber, its dischargingmouths, and spouts, as and arranged substantially as set forth.

JOSEPH ADKINSON lll'lllll WYMAX.

Vi tnesses:

R. H. EDDY, R. B. TORREY.

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