US640791A - Drying-kiln. - Google Patents

Description

No. 640,79l. Patented Ian. 9, I900.

' F. R. MORRIS.

(Application filed. July 17, 1899.)

(No modal.)

THE NORRIS PETERS 40.. PNDTO-LITNQ. wasnmuton, o c.

UNITED STATES P TENT FFICE.

FULTON R. MORRIS, OF MILIVAUKEE, \VISGONSIN.

DRYlNG- KlLN.

SPECIFICATION forming part of Letters Patent No. 640,791, dated January 9, 1900.

Application filed July 17,1899. Serial No. 724,085. (No model.)

- Milwaukee, in the county of Milwaukee and State of Visconsin, have invented a new and usefullmprovementin Drying-Kilns,of which the following is a description, reference being bad to the accompanyingdrawings, which are a part of this specification.

My invention relates to improvements in means for drying grain, malt, or analogous material.

The improved devices are employed in a drying-kiln and combined therewith, the kiln being especially adapted for use in connection with a grain-elevator, alongside of which the kiln may be located and into which kiln the grain or malt to be dried may be discharged from the elevator.

The present invention relates to improvements that are especially adapted for use in a kiln like the one for which I applied for a patent by my application, Serial No. 697,010, filed in the Patent Office on November 21, 1898, though the present improvements may be employed in kilns of a different construction from those shown in that application.

The invention consists of the drying-kiln, its parts and combinations of parts, as herein described and claimed, or the equivalent thereof.

In the drawings, Figure 1 is an elevation of the side of a bin in the kiln, with which bin my improved construction is embodied. Parts are broken away for convenience of illustration. Fig. 2 is a horizontal section of the kiln on line 2 2 of Fig. 1, only the parts belowand adjacent to the plane of the section being illustrated, the features of the construction at a greater distance below the plane of the section being omitted.

In a kiln buildingadapted for drying grain, malt, 850., a number of drying-kilns may be employed; but I have deemed it sufficient to illustrate only one kiln, as this is sufficient to exhibit my improvements. As considerable heat is sometimes required in these kilns, it is desirable to construct them principally of metal to obviate their destruction by fire.

A grain-bin in a kiln embodying my improvements is conveniently constructed with imperforate side walls 5 5 and end Walls 6 6 of heavy sheet metal; also, end walls of the kiln 6 6, at a distance from and opposite the walls 6 6, are continued at the sides of the kiln around to the walls 5 5, forming continuations thereof, and form a supply air-passage A and exhaust air-passages B at the respective ends of the bin. The side walls near their lower extremities are inclined inwardly, forming a hopper-like construction provided with a discharging-mouth having a slidable gate '7. Such a kiln is conveniently supported at a distance above the floor of the dry-kiln building by posts or framing 8 8, resting onany suitable foundation. In a bin constructed substantially in the manner described in my previous application for a patent, hereinbefore mentioned, a large number of air-ducts 9 9' are provided, extending from end to end or from side to side of the bin, which airducts are constructed with perforated sides and tops and open at the bottom, these airducts being adapted to permit of the passage of air therethrough, coming in at one end of the ducts and passing therefrom through their perforated walls and tops into the surroundair from the grain through alternate series of these ducts 9 9, the ducts 9 9 being open at one end into a supply air-passage A and the system of steam or hot-air pipes 10 10, leading from a source of steam or hot-air supply into and through the air-ducts 9 9, whereby heat by radiation from these pipes is supplied in the air-ducts 9 9 for Warming the incoming air as it enters these ducts and passes therefrom into the surrounding grain.

My present invention consists in further means for ventilating and drying the material in the bin, and these means are provided in and by a lining 12 to the side Walls of the bin. This lining consists of a sheet of open fine-mesh woven wire or perforated metal opposite the inner surface of the side walls and secured thereto at a distance therefrom, conveniently by means of metal bars 13 13, pref= erably flanged bars,secured to the walls of themg grain and permitting of the escape of the it up againstthe pressure thereon of the grain or other material in the bin. These stnddingbars extend from the bottom of the bin upwardly, forming exhaust air-ducts 14 between the walls 5 of the bin and the lining 12 and these studding-bars. These air-duets are open at their upper ends, the upper edges of the perforated lining 12 being turned over and secured to the walls 5 5 for holding the upper edges of the lining in position, the perforations providing ample passages or escape for the air therethrough. If this perforated lining 12 were employed in this manner in a bin not having the air-ducts 9 9 and 9' 9' or similar air-ducts through the bin medially, it might be desirable to provide air-ports into the air-duets 14:, near the lower extremity of the bin, to provide for a supply of fresh air and a draft upwardly through the ducts 14 or the spaces between the walls of the bin and the lining, and also in such a bin not having air-ducts medially thereof it would be desirable to provide this lining at the vends of the bin also, so that the entire bin would be lined, and thus provided with an air space entirely around it; but as this method of lining the bin in a grain-drying kiln is most desirably employed in connection with meat those sides, because the air-duets 9 9 andv 9' 9 extend through the end walls, so that: there will be no considerable amount of grain f or material lying against the end walls of the 'bin that will not be sufficiently ventilated by The flat vertical and inclined side walls of the bin 1 that are not thus pierced by the air-ducts 99; and 9 9' (and alongside of which grain or other materialin the bin is likely to become massed l and being nnventilated will retain moisture and is liable tobe spoiled) are, by providing this perforated lining 12 at a distance from means of the ducts 9 9 and 9 9'.

the walls, made to serve as a means of ventilation in connection with the ducts 9 9, whereby air taken into the bin centrally by these ducts 9 9 is permitted to escape through spoiled against the otherwise flat impervious walls of the bin.

In the drawings,15 15 are doors hinged to the bin and connected together by the rod 16, whereby they are adapted to close or partially open the ducts 9 9', thus providing means for regulating the supply of air through those ducts. i

What Iclaim as my invention is- 1. In a drying-kiln, the combination with a bin having imperforateovertical and inwardlyinclined downward walls of a perforated lining, parallel with and at a little distance from and secured to said walls providing an airspace between such imperforate walls of the bin and said perforated lining into which air eanescape through said perforated lining from within the bin.

2. In a drying-kiln, the combination with the imperforate vertical and obliquely-dis posed wallsof a bin, of a perforated lining on the inside of said imperforate bin-walls secured thereto at a little distance therefrom, and upwardly-extending bars at short distances apart serving as partitions and sup ports in the space between said walls and said lining and forming upwardly-extending exhaust-air ducts in said space.

3. A bin in a drying-kiln, comprising imperforate side walls, perforate linings at a little distance on the inside from but adjacent to said imperforate walls forming air-spaces between said'imperforate walls and said linings, and intakeair-ducts across said bin extending at one end or the other through the end walls of the bin, said ducts being perforated to permit air to-escape therefrom into the bin. p

In testimony whereof I aiiix my signature in presence of two witnesses.

' FULTON R.l\jlORRlS.

Witnesses:

0. T. BENEDICT, ANNA V. FAUST.

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