US204137A

US204137A - Improvement in oatmeal-machines

Info

Publication number: US204137A
Authority: US
Publication date: 1878-05-28
Anticipated expiration: 1895-05-28

Description

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G. H. G ORMAUK.

Oatmeal-Machine.

No. 204,137. Patented May 28,1878.

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G. H OORMAOK. Oatmeal-Machine.

Nd. 204,137. Patented May' 28,1878,

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UNITED STATES PA ENT OFFICE.

GEORGE H. OORMAOK, OF ROCKFORD, ILLINOIS, ASSIGNOR TO A. M. JOHNSTON & OO.,'OF SAME PLACE IMPROVEMENT IN OATMEAL-MACHINES.

Specification forming part of Letters Patent No. 204,137, dated May 28, 1878 application filed April 8, 1878. 7

To all whom it may concern:

Be it known that I, GEORGE H. GORMAOK, of the city of Rockford, in the county of Winnebago and State of Illinois, have invented a new and useful Improvement in Oat-Milling Machines, of which the following is a specificatiou:

This invention relates to that class of machines employed in the manufacture of oat-- meal or grits, and is employed to cut the oatgrains, after the chaffy hull or shuck has been removed there from, into small sections, forming clean sharp grits with but little waste.

To this end I have devised and constructed the machine represented in the accompanying drawings, in which Figure 1 is an isometrical representation of my improved oatmeal-cutter. Fig. 2 is a diagonal vertical section on dotted line X on the plan view. Fig. 3 is a plan view, in which the hopper is omitted to show the upper surface of the cap and the cutters secured to. Fig. 4 is also a plan view, in which the cap is omitted to show the inner grooved surface of the conicformed cup. Fig. 5 is a side elevation of the conic-formed cup and the cap.

In the drawings, Arepresents a conic-formed cup with large end open, and is fixed to the vertical shaft B with large open end upward. The inner inclined walls of this cup, forming its inner surface, are grooved radially, as at a, resembling somewhat in general appearance an internal bevel tooth gear- Wheel. 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 cup, so as to present a perpendicular wall on the forward-moving side of the teeth.

0 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-formed cup A mounted thereon, and in the direction indicated by the arrow. This shaft, with the conic-formed cup and belt-pulley secured thereto, 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 crosspermit the shaft to revolve in it freely This cap is formed with a rim, 1;, on its .under face and outer edge, beveled to drop freelyiinto the upper end of the cup. The outer rim hot 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-formed cup A. This beveled surface is 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 c are 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 in the conic cup; and that portion of the cutters which overlaps the outer grooved edge of the conic cup 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, d, by which it is held in a fixed position relatively with the frame, and in such amanner that the conic cup will revolve freely under it. This cap H is provided-centrally on its upper side with a cup, 6, which receives the lower end of the hopper I, the outer corners of which are supported on stahohions resting on the corner-posts of the frame. The (mp e is pro vided with openings it through its bottom to admit the grain from the hopper to the conicformed cup.

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 h in its bottom into the conic-formed cup 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 cup causes the oat-grain to slide endwise up the grooves in the inclined inner walls of the cup, and is carried against the edge of the cutters, and is cut into sections the inclined steps on the upper beveled sur-' face of the outer rim of the cap H.

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

This, perhaps, would be best accomplished by I varying the angle of the steps which form the seat of the cutters. By reason of the 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-formed (cup 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 vgrain up the grooves in the cup, 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 cup,but at, a less velocity, regulated to move at such relative velocity with the cup so. as to produce the largest quantity and best quality of'meal from the gram.

In the foregoing I have employed a conicformed cup, grooved on its inner inclined walls, instead of which a cup having concave or convex inner surfaces radially grooved, or, instead of the cup form, a disk radially grooved, or any other known form capable of such use, may be employed without departing from the gist of my invention, so long as the grain is carried to the cutters by centrifugal force in grooves in a revolving surface.

. I claim as my invention 1 In an oatmeal-cutter, the combination, with a'hopper or 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. 1 t

2. In an oatmeal-cutter, the combination, with a hopper or 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 adjust- GEORGE H. GORMAGK.

Witnesses:

A. 0. BEHEL, J AMES FERGUSON.