USRE6307E - Jesse b - Google Patents

Description

2,Sheets--Sheet I 1. B. WHEELER.

Grain-Drier.

No. 6,307. ReissuedFeb.23,1875.

lay 1.

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' TED JESSE B. WHEELER,- oF ."BoL'ro'N, MAss oHUsnrirs, Assumes;13,

ASSIGNMENTS, To? AME A. MALONEY, orgfenonenrown,

. Specification forming part of Letters Patent No. 38,191, dated reissue No. i e Y February 23, 1875; application filed February I0, 1875.

To all whom it may concern: 1 I

.Be it known .thatl, J ESSE B. WnE LER,of

i .130] ton, in the coun ty of Worcester and State of,

Massachusetts, have inventeda new and useful Improvement in Machines for Drying, Cooling, and Cleaning Grain, Flour, Meal, and other and I do hereby declare the full, clear, and exact description of the. same, reference being bad to the acfollowing to be'a companying drawings, making a part of this specification, in which-.-

Figure 1 represents a side elevation of the machine. [Fig.2 represents an .end view there of. Fig.3 represents a vertical, longitudinal,

anda central section through the machine. Fig.

4 represents a vertical transverse section; and Fig. 5 represents, on an enlarged scale, one of the stirreraand-its; connections and mode of adjustment. 1

similar letters of reference, where they occur in the several figures, denote like parts of the apparatus in all the drawings.

To enable others skilled in the art to make and use this invention, I will proceed to'describe the same withreference to the drawings.

A represents an air-tight case, which is furnished with suitable air inlet and exit passages, commanded by valves or registers, as will be hereinafter explained. At one end of this case there is a hopper or feeding-passage, B, the entire width of the screen, and commanded by a slide, a, by which said passage may be enlarged or diminished, as it may be desirable to feed in the grain or other material to be dried, cooled, and cleaned, in greater or less quantities. The material having passed through the feed-passage B, drops upon one end of a pertoratedbottom, (3, through the perforations of which heated ordried air is drawn by an exhaust-fan, D, arranged on top of he cover A of the case. The air thus drawn through the perforated bottom, and through the grain or other material passed along over it, is heated in a chamber, E, in the lower part of the case, by the heaters F and the flue-pipes G, extending therefrom through the said chamber E, the exhaust-fan creating the draft by which it circulates through the grain, &c. This heated air becomes charged with the moisture that it takes up from the rated. bottom 0, by

. rain, &c., and when expelled by the fan'other heated airltakes its place and becomes surcharged-withmoisture, and so on;v The. grain, .&c .,;is stirred .and advanced over the perfomeansof adjustable arms orstirrrs b,'arranged.on'cross shafts c, that are united at their ends to endless traveling chains or belts d at the sides of the case,'these chains havingguide-Wheels ee, that run on ways f connected tothe 'sldesof the case, and also sprocket wheels 9, around which they move, the sprocket wheels beinglorl shafts h, .whose'bearings run in adgustable boxes *i, so as to keep the chains properly strained up. On the outside of the case there may be acrapk, j, or a pulley, 'Ic', turougn or by means of which and of a pinion on their shaft, motion is communicated'to the cog wheel H, on one of the shafts h, and through this shaft to the endless chains and stirrer-s and movers thereon, for advancin gjand stirring the grain, 85c. V The stirrers, as more'distinctly seen in Fig. 5, are composed of four arms, 1 2 3 4, hinged to each other and connected to the shaft 0, and to a bar, I, so-that by means of a set-screw, 5, the arms 3 4 may be moved apart or drawn toward each other, to present more or less moving-surface to the grain or oth er material being dried, cooled, and cleaned; and these stirrers and movers may be run at a greater or less velocity for a similar purpose, viz., of advancing more or less rapidly the grain or other material. over the perforated bottom and through the air-chamber. I'natter heavy enough to pass through the perforated bottom, drops or is conducted through the open space I by the inclined overlapping hopper or deflecting boards J, whence it can be removed through a door at the end of the case, while the dust or impurities that rise abovethe perforated-bottom are drawn out by the exhaust fan D, so that it is also a cleansin g, as well as a drying and cooling-process.

The grain, &c., having been dried and passed over the and'movers b, drops through the passage m onto a perforated apron, K, which is hinged at its upper end, as at u, and can be raised or lowered at its lower end by the swivel-rodso o.

The object in raising and lowering this apron Any dirt, or other impure bottom O" by means of the stirrers i i are controlled by slides,

and to hasten or retard it, as the case may be.

at the lower end of the apron K there are boards 11 q, furnished with openings, one of these, q, being so arranged by slots andisetscrews as that it may be moved'register-fashion upon the other, p,'to open ,or close the passages through them, and thus limit the passage of the grain orother material through them. .When the passages are closed, then the grain, &c., must pass over the top of the board 10, and thence through the exitpassage r of the machine.

Underneath the. apron K there is a cold-air chamber, L, into which the cool air is blown by a fan-blower, M, and thence this air rises up through the perforated bottom, and through the material passing over it, which cools it.

At the lower end and under side of the apron Ktherc is a hinged valve, 8, which rests against the part t of the frame. This valve,

' asthe apron is raised or lowered, keeps the space under the apron closed, so that the only escape for the. cool air out of the chamber L is through the perforations in the apron K.

The main chamber E is furnished with air through the epenings u, Fig. 1, which are commanded by a register, 11, to regulate the quantity inlroduced.

All the inlet and exit openings or passages valves, or registers, except that, m, which is not so material; but even this may he commanded, if necessary, by a slide or valve.

' Having thus fully described my invention, what I claim as new, and desire to secure I by Letters Patent, is-

all substantially as and for 1. In combination with the heated-air cham" ber E, perforated bottom 0, and the stirring and moving arms traversing over it, the exhaust-fan D, for drawing the heated air up through the grain or other material, and through the machine, substantially as described.

'2. In combination with the hinged apron K, overlying the cool-air chamber L, the raising and lowering rods 0-0, and hinged yalve s, substantially as described, so that said apron may be raised or adjusted without opening the chamber L, as specified.

3. The stirrin and moving mechanism, consisting, essentia ly, of the hinged and adjustable arms b I), moved by endless chains, substantially as herein described, and for the pur-* poses set forth. v

4. In a machine for drying, cleaning, and purifying grain, meal, flour, and similar materials, the combination of ahorizontal screen, forming a diaphragm within a rectangular air-tight case, an exhaust-fan and discharge connected with the upper portion of said case, a feed-hopper and regulator to feed the material into the machine the entire width of the screen, and of even depth, and means foragitating'and moving the material in one direction, while the air drawn up by the fan passes in another direction, and hopper beneath said screen having inclined overlapping surfaces, the purpose set forth.

Jesse B. WHEELER. inst] In presence of-' I GEo. G. SUMNER, J. S. LAw ENcE.

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