US491075A - Drier - Google Patents

Description

(No Model.) I 2 sheetssheet 1. W. C. BYRNE.

I DRIER. y No. 491,075. n n Patented Peb. .7 1898.

l n l l n (No Model.) 2 Sheets-Sh t 2 W. o. BYRNE. ee

DRIERf Patented Feb. '7, 1893.

Ni m VM@ N UNITED STATES rIP..T1:1\TT Ormel-3.'I

WILLAM C. BY RNE, F CHICAGO, ILLINOIS.

DRIER.

SPECIFICATION forming part of Letters Patent N o. 491,075, dated February 7, 1893.

Application filed March `19, 1892. Serial No. 425,568. (No model.)

To @ZZ-whom t may concern.-

Be it known that I, WILLIAM C. BYRNE, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois,

have invented certain new and useful Improvements in Driers, which are fully set-forth in the following specification, reference being had to the accompanying drawings, forming a part thereof. Y

This invention relates to dryinghouses, or apparatus for trying brick, lumber or any other-material, and belongs to that class ot" driers in which the material to be dried is loaded upon a truck or car which passes r 5 through the drying house slowlyon tracks provided tor that purpose, the intended method .of use being that a continuous succession of loaded trucks are passed through the drier, so that its drying capacity is utilized to the utzo mostand withoutinterruption, the air passing continuously into and out of the house consists in details of construction which are set out in the claims.

In the drawings, Figure 1 is a longitudinal z5 vertical section through a drier or drying .house embodying my invention. Fig. 2 is a transverse section through the same at the line 2-.2 on Figl. Fig. 3isan endelevation A on a reduced scale. Fig. et is aground plan. 3o The house illustrated in the drawings comprises a space A, which I call the heating room, which is occupied by any desiredor necessary number of steam heating pipes B B &c., all substantially or "approximately in horizontal plane, orin a plane slightly sloping to correspond to the slight slope of the track on which the cars run, as hereinafter indicated. Midwayin the length of this heat- -ing room it has the cold air supplyfopening 4^ 4o or openings A A through its side walls to admit a su ppl-y of exterior fresh air. This heating room is not separated from the room which I will now describe, except by the im'- aginary plane in which are'loeate'd the tracks A C C C, on which the cars run, the rails for said tracks being supported on the cross ties' C2, the space between the ties being left open,

so that .they do not constitute a partition or ceiling to separate the heating room A from 5o the drying room D, by which t'erm I designate the space above the tracks, through which the cars pass in their longitudinal travel.

the drying honse,.and is;"'therefore, substanvtially in the same vertical plane as the cold air supply openings A A,and midway in the .length of the baiile plate E. This chimney ispreferably divided into two tiues G G by a partition Giras illustrated. rlhe bali-le plate E is located at a comparatively short distance below the ceiling H, whereby there is formed above the baffle plate and below the ceiling, the horizontal flue or tlues J J, leading from the extreme'portions of the drying room bach with the chimney.

structure for the baffle plate E, which may be toward the' center, where they communicate J represents a stiffening or supportingI I dispensed with when the width of the drier is. not such as to require it for strength.

Usual precautions against loss of hea-t by radiation and against absorbing moisture are employed,-such as making the baiie plate E with upper Aand 'lower walls E E and -an intervening space E2 packed with sawdust, and similarly constructing the ceiling 1l', and end and side walls K K and K K. The end walls K are constructed with doorways,which are provided with vertically sliding doors L L L. Any suitable means maybe provided to operate these doors, and said means are therefore not herein illustrated.

The operation of this deviceis that the cars being admitted at the more elevated end, which, in the drawings, is the left-hand-eud, through the doors L L, and moving by gravity along the very slight incline of the track, or moving by other means desired Whether assisted or not by gravity, enter at first a moderat-ely heated and moderately dry air, which has first entered through the cold air supply openings A A', and has moved from the said openings toward the two ends of the IOO chamber, passingover the steam coils and bef coming dried and heated by them, while at the same time, it has absorbed moisture and been cooled by the loaded cars which it has passed during the same time-assuming that the entering car, to which this description relates, is not the firstI car which has entered, but one which has entered while the house is in continuous operation and occupied from end to end. Theair, thus encountered bythe entering cai-,is therefore, as stated, only moderately-warm and moderately dry. As the car advances under the bafie-plate orceiling E, toward the middle of the building, the air which it encounters and through which it moves is steadily increasing in dryness and temperature until it passes the middle, and

as it moves-from the middle toward the farther end, the air is gradually cooler and emerge from the far-ther end of the drying' chamber into the outer air without experiencing any more abrupt change in respectto the conditions of moisture and temperature than when it entered the chamber at the other end, all the changes through which it has passed having been gradual and so not liable to cause the material to warp or crack. This description will" vapply equally to lumber, brick, pottery or vother articles commonly treated in driers of this class. advantage of the construction which causes the air to circulatev from the middle to the ends and return toward the middle to emerge at the chimney, and of causing the warmest and dryest placeto beat 'or near the' middle rather than at either end, is that thereby the entire length of the car is equally and evenly dried, theforward half of the car being exposed to the most drying air for a. greater portion of time during its passage through the first halfl of the chamber, and the rear end of the car having similar advantageous exposure during its passage through the second half of the chamber.

It is not of vitalimportance that the steam pipes or othermeans of heating should be located below the plane of the tracks and crossvties, but it is a convenient arrangement. Practically, as above stated, the heating room and the drying room are one room, referred to by these two terms merely for convenience 4in description.

opportunity to rise, and this may be accom-- plished by iooring over the 'ties for a short distance atl'the middle, and suchl a construc- A particular.

the ends of the baffie plate E,-to regulate 7o the proportion of the air which passes through either half of the length of the drying room, or the speed of the drying current through either half. The same. effect maybe accomplished by locating dampers S Sin the said lues at any point of their length,as, for example,just at their point of communication with` the chimney.

I claim:-

1. A drying house having suitable entrances 8o and exits at the opposite ends respectively, and the chimney for the egress of the'drying\ currentl substantially midway between the X ends; and the horizontal baflie plate lor ceil ing-extending through the middle portion of the length of the drying chamber andA to within a comparatively short distance of .both ends: in combination with heating pipes occupying the lower part of the drying chamber throughout the length thereof, Vand suitable 9.o

air induction openings at" or. belowthe level of the heating pipes midway between theA ends of the drier, substantially as andfor thepurpose set forth.

y2. In combination with the drying chamber having its fresh air supply at substantially the middle point of its length at the bottom,

and' the'chimney for ,theegressof the air cnn.-

rents communicating at substantially fthe middle point of said length at the top, and a zoo n horizontal baffle plate or ceiling extending over the middle portion of the chamber wherebythe air is compelled to pass from its ingress both Ways toward the ends respectively ot' the chamber and return' from both direc- :o5

tions toward the middle for egress through the chimney: substantially as set forth.

3. In a drying house, in combination with the heating and drying room having longitudinal tracks for thepassage of cars loaded iro with thev material -to be dried; and having fresh airinduction apertures at the middle of its length, heating pipes extending throughout the length of the chamber .at the bottom,

a horizontal iue extendingV longitudinally abovesuch room and communicating therewith at both. ends, and the chimney-with"\ which said .horizontal line communicates inter'mediate 'its said end ,communications with the drying room; and dampers in said hori- 12o zontal flues respectively: substantially as set forth.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at

Chicago,lllinois, this 12thday vof March, 1892. :2 5

WM. C. BYRNE.

Witnessesp '-CHAs. S. BURTON,

JEAN ELLIOTT.

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