USRE9558E - cormack - Google Patents

Description

2 Sheets- Sheet 2.

v G. HJ'GORMAG K,

Assignorto A' M. Jopms'ron & C0 Oatmeal Machine.

No. 9,558. Reissued Feb. 8,1881.

. UNITED STATES I PATENT O FICE.

eto-Rea II. common, or ROCKFORD, ILLINOIS, ssrenon TO A. M.

onNsToN & 00., or SAME PLACE.

OATMEAL-MFACHI'N E.

SPECIFICATION forming part of Beissued Letters Patent No..9,558, dated February 8, 1881. Originalflo. 204,137, dated May 28,1878. Application for reissue'filcd December-2,1880.

To all whom it may concern:

Be it known-that I, GEORGE H. Common,

. of the city of Rockford, in the county of \Vincation. v

. wheel.

ing clean sharp grits, with V Thisinvention relates to that class of machines employed in the manufacture of oatmeal or grits, and is employed to cut-the oatgrains, after the chaify hull or sh uck has been removed therefrom, into small sections, formut little waste.

To this end I have devised and constructed the machine represented in the accompanying drawings, in which i Figure 1 is an isometricalmeprescntation of my-improved oatmeal-cutter. Fig. 2 is a diagonal vertical section on dotted line X on the plan view. Fig. 3 is aplan view, in which the hopper is omitted to show the upper surface of the cap and the cutters secured thereto. Fig. 4 is also a plan view, in which the cap is omitted to show the inner grooved surface of the conic cup-formed carrier. elevation of the conic cup-formed carrier.

In the drawings, A represents a conic cupformed carrier with large end open, and is fixed to the "ertical shaft B with large open end upward. The inner inclined walls of this carrier, forming its inner surface, are grooved radially, as at a, resembling, somewhat in general appearance an internal bevel-tooth gear- The' grooves, however, are preferably made with curved or circular bottoms, and the teeth are preferably inclined slightly in the direction of the rotation of the carrier, so as to present a perpendicular wall on the forward moving side of the teeth.

(J is a pulley fixed to the shaft B, and is designed to receive a belt from a driving-pulley to impart rotary motion to the shaft and the conic cup-formed carrier A mounted thereon, and in the direction indicated by the arrow. This shaft, with the conic cup-formed carrier and belt-pulley securedthereto, is mounted in a vertical position to revolve in suitable bearings centrally in the rectangular frame, composed of posts D, sills E, girts F, and center cross-beams G, framed together, as represented in the drawings.

Fig. 5 is a side H is a cap, of the form represented in the drawings, and is fitted to the upper reduced portion of the shaft 13, resting on a shoulder on the shaft in the carrier in such a manner as to permit the shaft to revolve in it freely.

.This capis formed with a rim, 1), on its under face and outer edge, beveled to drop freely intothe 'upperlend of the carrier.

The outer rim,b, of the cap H is beveled on its upper side, so that its beveled surface-will be about at a right angle with the bottom of the grooves in the inner inclined face of the conic carrier A. This beveled su'rfaceis formed in inclined steps at proper intervals to receive the cutters c in such a manner that the rear edge of each cutter will overlap the front edge of the cutter in its rear. The cutters care secured one on each inclined step of the outer rim of the cap, by means of rivets or screws, in such a manner that their outer cutting ends overlap the outer ends of the grooves inthe conic carrier, and that portion of the cutters which overlaps the outer grooved edge of the conic carrier is beveled on their upper side and forward edge, forming a cutting-edge. In-this instance, the

-cap, with the cutters secured thereto, is connected with the rectangular frame by means of a bar, (I, by which it is held in a fixed position relatively with the frame, and in such a manner that the'conic carrier will revolve freely under it. This cap 11 is provided centrally on its upper side with a cup, 0, which receives the lower end, of the hopper I, the

outer corners of whichare supported on stan= chions resting on the corner posts of the frame. The cup 6 is provided with openings it through its bottom to admit the grain from the hopper to the conic cup-formed carrier.

in the manufacture of oatmeal with my improved machine the operation is as' follows: The shelled oats, being placed. in the hopper I, enter the cup 6 and pass through the opening it in its bottom into the conic cup-formed carrier A, which is made to revolve at a high speed by means of a suitable connection with a motor. The centrifugal force produced by the high speed of the conic carrier causes the oat-grains to slide endwise up the grooves in the inclined inner walls of the carrier, and is carried against the edge of the cutters, and is cut into sections of a length about equal to the depth between the under sides of the cutters at the point where the cutters come in contact with the grain, which is about equal to the vertical distance between the front and rear edges of the inclined steps on the upper beveled surface of the outer rim of the cap H.

In the construction of machines the length of the cuts-of the grits maybe varied by varying the inclination of the cutters on the cap.

This perhaps would be best accomplished by varying the angle of thesteps which form the seat of the cutters. By reason ofthe square cut produced with fine-edged cutters, a better quality and an increased quantity of grits is produced from an equal quantity of grain than with other machines now in use.

In this instance I have represented my machine with the open end of the conic carrier A upward; but my machine is capable of use inverted, and I have represented my machine with the cap to which the cutters are secured as stationary; but when a very high velocity is necessary to insure the ascent of the grain up the grooves in the carrier, the stroke of the grain against the'cutter-edges might be such as to break the grits into small particles, which would tend to lessen the quantity and impair the quality of the meal produced. In such instances the cap to which the cutters are secured may be made to revolve in the same direction as the conic carrier, but at a' departing from the gist of my invention, so long as the grainis carried to the cutters by centrifugal force in grooves in a revolving surface.

I claim as my invention 1. In an oatmeal -c'utter, the combination,

with a hopperor carrier adapted to be rotated in a horizontal plane, the inner surface of said hopper being provided with radial grooves which lead to the outer edge thereof, of suitable cutters, located in close proximity to the edge of said carrier or hopper, substantially as set forth.

2. In an oatmeal-cutter, the combination, with a hopperor carrier adapted to be rotated in a horizontal plane, the inner surface of the hopper being provided with radial grooves which extend to the outer edge thereof, of a series of inclined cutters, located and adjustably secured in close proximity to the outer edge of said grooved carrier or hopper, substantiallyas set forth.

3. The combination, with a rotary carrier provided with carrying grooves leading from its central portion outward, and operating to of cutters constructed and arranged to sever the grains simultaneously at different points on the periphery of the rotary carrier, substantiallyas set forth.

4. The co1nbination,-with a rotary carrier provided with grain carrying and guiding grooves leading from its central portion outward, and adapted to feed the grain by centrifugal force, of stationary cutters, located in carry the grains outward by centrifugal force,

close proximity to the delivery ends of the grooves to divide the grains into sections, substantially as set forth.

GEORGE H. CORMAGK.

Witnesses:

J. S. SMITH, A. 0. BEHEL.

Images