US19984A - Cooling and drying meal - Google Patents

Description

.Patented Apri' 20. 1858.

J. DENCHFIELD.

Mill Bolt.

UNITED sTATEs 'PATENT OFFICE.

JOHN DEUCHFIELD, OF .'OSWEGO, NEW YORK.

COOLING AND DRYING MEAL.

Specication forming part of Letters Patent No. 19,984, dated April 20, 18158; Reissued January To all whom it may concern:

Be it known that I, J oHN DEUCHEIELD, of Oswego, in the county of Oswego and State of New York, have invented a new and Improved Arrangement of Means for Cooling and Drying Meal During its Passage from the Grinding-Stones to the Bolts; and I do hereby declare that the following is a full, clear, and eXact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a vertical section of my improvement taken in the line (0c), Fig. 2. Fig. 2, is also a vertical section taken in the line (y) (y) Fig. l.

Similar letters of reference indicate corresponding parts in the two figures.

This invention consists in the peculiar arrangement of a suction fan, conveyers and elevators, as hereinafter described whereby the meal during its passage from the grinding stones to the bolts is thoroughly cooled and dried within a limited space, the whole forming a simple and economical device.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents mill stones and A, are the curbs. The stones are arranged in the ordinary way.

B, represents the bed on which the stones are placed.

C, represents the spouts which convey the meal from the stones and D, is a chest which is placed horizontally on the flooring E, and with which the lower ends of the spouts C, communicate, as shown at (a) in both Iigures.

Within the chest D a longitudinal shaft F, is placed, said shaft having a spiral flanch (b), on it as shown clearly in Fig. 1. The chest D, is equal in length to the bed B, so that all the spouts C, of the several stones A, may communicate with it. Within the chest D, there is also placed a zig-zag partit-ion E provided with openings (c) having sides (d), and with one end of the chest D, elevators F,communicate,said elevators discharging their-contents at (c) as shown in Fig. 2.

G, is a fan which is placed within a suitable boX H. The boX I-I communicates with a spout I, the lower end of which communicates with one end of the chest D, as shown at (f). The upper end of the spout I, communicates with one end of a chest J, as shown at The chest J, contains a lo-nitudinal shaft K, having a screw o-r spiral' anch on it as plainly shown in Fig. l, and within the chest J, a series of vertical plates (i) is placed and arranged as clearly shown in Fig. l, to form a zig-zag passage as indicated by the arrows 1. The end of the chest J, opposite to that where the spout I, cognnunicates is provided with an opening y Both shafts F, K, are rotated by any proper means in the direction indicatedv by the arrows 2.

The operation is as follows: The meal passes from the stones A, down the spouts C, and into the lower part of the chest D, and is conveyed to the spirally ianched shaft F, into the elevators F the shaft F, which is .a conveyer moving the meal in the direction indicated by the arrows 3. The meal is carried up by the elevators and discharged .at (e) directly into the bolts or into troughs and may be conveyed by hopper-boys or any suitable conveying device into the bolts.

While the meal is thus passed through the' stones A, spouts C, and the chest D, a suction blast is produced bythe fan G, said blast absorbing the moisture or vapor which the meal contains and which is heated or warmed by the friction of the stones A. The meal therefore is dried and cooled and the meal in consequence o f the time consumed during its passage through the spouts C, and chest D, will be perfectlyacted upon by the blast so that all free moisture will be absorbed. A portion of the finer and lighter particles of flour will follow the blast and will be ejected up through the spout I, and through the serpentine or winding passage formed by the parts (i) and will settle 1n the outer end of the chest J, and conveyed by the conveyer or flanched shaft K, to a spout (j) through which it falls into the elevators F, and unites with the meal which is received by the elevators direct from the chest D.

I do not claim forcing a current of air between a pair of millstones while the same is in operation, for the purpose of keeping the stones in a e001 state and preventing the I claim therefore as new and desire to seheating of the grain for such means, cure by Letters Patentalthough not very efcient, have been previ- The arrangement and combination of the ously used, but I am not aware that parts chests D, J, shafts F, K, elevators F1, fan G,

5 arranged as herein shown so as to allow the and spout I, substantially as and for the 15 meal to be subjected to the blast during its purpose herein shown and described. ent-ire or nearly entire passage from the -JOHN DEUCHFIELD. stones to the bolts, and insure the perfect Witnesses: cooling and drying of the meal, have been y THOMAS WATERS,

10 previously used. MIGHL KELLY.

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