US1518516A - Lumber dry kiln - Google Patents

Description

Dec. 9, 1924. 1,518,516

P. T. JONES ET AL.

LUMBER DRY KILN Filed Dey. a, 1923 2 sheets-sheet 1 I a il 4 gi@ I l l l s l l ec. 9, N524. '1,518,516

F. T. JONES ET AL LUMBER DRY KILN Filed Deo. 8, 1925 2 Sheets-Sheet 2 Patented Dec. 9, 1924.

UNITED PAUL T. JONES, Off CQRINT-I, MISSSSIPP, AND ROY TAYLOR, 0F TEXAS,

ALABlll/A.

LUMBEB BEY KILN.

Application led December 1923.

a. lumber kiln wherein the products oi' combust-ion trom the usual burning of the slab pile are utilized tor drying the lumber, the kiln being termed a smoke kiln.

Smoke kilns have been used heretofore but they have generally been so constructed that there was considerable liability ot lire, the kiln being made ot wood and consequently the use ot' such smoke kilns, while very economical in construction and superior in many ways to steam kilns, has entailed frequent losses from the. destruction ot the kiln and its contents.

The principal and most important object of the present invention is to provide an improved construction of smoke kiln` wherein the lire loss will be eliminated.

A second important object of the invention is to provide an improved kiln arrangement in which sparks -from the smoke flue will be prevented from reaching the lumber in the kiln.

A third important object ot the invention is to provide a novel kiln arrangement wherein accident-al tire can be readily put` out.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details ot construction and combinations ot parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed.

Tn the accompanying drawings like characters of reference indicate like parts in the several views, and:

Figure l is an end view with part ot the front broken away and disclosing the construction 'f the improved kiln.

Figure 2 is a. side view with part ot the side broken away for the purpose of showing the interior ot the kiln.

Serial No. 579,3?8.

ln the present embodiment of the invention tliere is shown a kiln having a front wall l0, side wall ll and rear wall l2. ln the iront and rear wall are provided flue openings 13 that suitable flue may be connected at one end to admit the products of combustion from the slab pile and asimilar exhaust Hue or stack may be connecte-Cl at the other endq although this is not all essential feature as will be more clearly understood hereinafter. e

l/Vithin the casing thus formed there are provided spaced columns le which may be of desir d shape or construction but are preferably what is known as pipe columns. These columns support longitudinal I-beams 15 and between these beams and also between the outer beams and the casing are pipe spacers 16 through which extend the transverse tie rods 17 having the nuts 18 on their ends, These beams l5 form the supports for the lumber to be dried and preterably at one end of the kiln there is provided o-n each bea-m an upwardly extendingr inclined rail or support 19 against which the sorted lumber will be stacked edge wise as shown in Figure 2, successive layers 19 ot the lumber being held in spaced relation by spacing strips 20. ln this way a free circulation of air and the flue gases may take place between the layers ot lumber.

However, it no means were taken to pre Vent such action it is obvious that sparks would pass up in the spaces between .the laver ends and set fire to the lumber in the kiln. ln order to prevent this there is supported on the bottom liange of the beam a wire screen 2() and above this wire screen between the beams are inclined bales 21 having upper and rearward ends curved downwardly as at 22 to constrict the passage between adajacent baffles. Now under these conditions it will be obvious that the wire screen will prevent practicall,v all ot the sparks from passing up to the lumber but it any of the smaller sparks do work through the screen then the batlies will catch these sparks and prevent them from setting tire to the lumber. Nevertheless, it ever a spark should work past both screen and baiile and set the lumber on tire the manner in which it is stacked in the kiln permits the tire being attacked from above with the usual extinguishing means and readily` put out.

The entire structure may be held together With the tie rods or braces 23 and it will be obvious that such a kiln may be very economically constructed and that by the use of a screen the losses incident to the ordinary smoke kiln will be prevented.v

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that minor `changes may be made in the form and construction oi the invention without departingfrom the material spirit thereof. lt is not, therefore, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. In a kiln of the class described, a casing, supports extending in said casing in spaced relationy to the bottom of the casing, said supports constituting means to receive stacked lumber, and a wire screen extending across the casing between the supports to prevent upward passage of sparks.

2. In a kiln of the class described, a casing, supports extending in said casing in spaced relation to the bottom of the casing, saidsupports constituting means to receive stacked lumber, and a wire screen extendingacross the casing between the supports to prevent upward passage of sparks, inclined battles provided with downwardly turned upper ends and extending between the supports in spaced relation to each other.

3. In. a kiln of the class described, a casing, a plurality oflongitudinally extending beams in said casing, means to hold said beams spaced above the bottom of the casing, wire screen extending from beam to beam, and rearwardly inclined lumber supports at one end of the casing and having their lower ends carried upon the tops of said beams` fl. Ina kiln of the class described, a casing, a plurality'of longitudinally extending beams in Vsaid casing, means to hold said beams spaced above the bottom of the casing, a wire screen extending from beam to beam,rearwardly inclined lumber supports at one end of the casing and having their lower ends carried upon the tops of said beams, baiiie plates extending trans .f'ersly of the casing from beam to beam and each having its upper edge turned downward towards the adjacent baiile and terminating in spaced relation thereto.

In testimony whereof, we atliX our signatures.

PAUL 'r. Jonas.y .Y EDWARD nor TAYLOR.

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