USRE104E - Improvement in wheat-fans - Google Patents

Description

W O L G D Fanning Mill.

Re issued 0m 30. ,1847.

JIUNITED STATES PATENT OF ICE.

DANIEL oLoW, OF PORT BYRON, NEW YORK.

IMPROVEMENT m WHEAT-FANS.

Specification forming part of Letters Patent No. 4,582, dated June 16, 1846; Reissue No. 104, dated October 30, 1847.

To all whom it may concern:

Be it known that I, DANIEL 01.0w, of Port Byron, in the county of Cayuga and State of 5 New York, have invented and added sundry Improvements to the Fanning-Mill, by the aid.

of which grain of different kinds can be thoroughly cleaned and separated from every foreign substance.

* I denominate my invention Glows Com- I bined Rotary and Vibratory Screen Fanning- Mill; and I do hereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

Figure 1 is a vertical longitudinal section through my improved fanning-mill; Fig. 2, a

ning-mill is constructed in the usual manner.

My first improvement consists in giving the face of the wings a a of the fanner a concave form, for the purpose of adding to the strength of the blast without increasing the number of revolutions of the fanner.

b b are the arms, and c is the shaft, of the inner.

My second improvement is the introduction ,of a regulator, J, between the fan and the vibrating shoe B, for the purpose of guiding and directing the current of wind from the fan onto whichever screen in the vibrating shoe that may be desired in the cleaning of different kinds of seeds or grains. The whole blast may be thrown onto the upper or onto the lower screen, or the greater portion onto one or the I other, as circumstances may require.

The regulator j is constructed of a plank having its edges beveled to a point. r

k is the shaft or journal on which the regulator j is vibrated.

Zisalever for moving and indicating the position of the regulator. My third improvement consists in the manner of constructing the shoe B, and so securing the screens 1 2 3 4 in the same that their position be easily changed and adjusted.

I generally construct the sides of the shoe of metallic plates, and connect them to each other by rods 0 o and pp.

On one end of the rods p p, I place screwscreens can be placed in a horizontal position or at any angleof inclination with each other that may be desired in cleaning different kinds of seeds or grains, or for combining the vibratory screens with the double rotary screens.

When I construct the sides of the shoe of wood, I make the grooves for the reception of the screens of the form represented in Fig. 4 viz., at their centers they closely embrace the sides of the frames of the screens, and each way from this point they are enlarged-by which form I am enabled to place the screens in any position desired and firmly secure them by means of the screw-bolts p p, as in the other modification of the shoe, with metallic sides.

My fourth improvement consists in placing a double rotating cylindrical screen in the fanning-mill under the shoe B, extending in an inclining position from the rear to front of the mill. The double rotating screen consists of two cylindrical screens, 0 and D,placed concentrically the one within the other, secured to annular heads t t, which heads are secured to a shaft, m, by the arms n n. The grain is first acted upon by the vibrating screens 1 2 3 4 in the usual manner, and from these it is conducted into the rear or highest end of the inner rotating screen, I). The inner screen, D, is of a coarse, and the outer screen, 0, of a 'fine, texture. The meshes of the inner screen,

D, are of such a size that they will allow the grains of wheat or rye to pass through them onto the outer screen, 0, and retain every coarser substance. The meshes in the outer screen, 0, are just fine enough to retain the kernels of wheat or rye and allow the cockle and every smaller substance to pass through them as the screen is revolved. The rotary motion of the double screens and their inclined positions carry the grain forward on the screen '0 and discharge the same through the enlarged meshes or openings at its front end onto the front side of the division-board H, the same motion carrying forward the coarser substances and trash in the inner screen, D, and discharges them in the spout i, which conducts the same to the rear of the division-board H under the mill. The double cylindrical screen is revolved by a bevel cog-wheel, e, on a horizontal shaft, d, working into a bevel-wheel, h, on the shaft m. 7 The shaft d isdriy en bya band, e, connecting the pulley f on the same with the pulley g on the main driving-shaft E.

c is a nut on the shaft m, for stretching the double screens 0 D. yis acrank on the driving-shaft E.

F is a cog-wheel on the driving-shaft E, working into and communicating motion to the cog-wheel 2 on the fan-shaft 0.

0 is a crank on the fan-shaft c, which communieates a vibratory movement to the shoe upon while passing through and over the vibrating screens 1 2 3 4 in the shoe B, is discharged from the screen-4 into the space between the cross-board h and the guideboard b, and passes through the aperture a. in the cross-board it, over the spout d, into the 0y.-

lindrical screen D.

On the rear annular head, t, of the double cylindrical screen there is a flange, u, projecting inward, which prevents the grain from falling out of the rear end of thesame. \Vhen it is unnecessary to pass the grain through the double cylindrical screen, the vibrating screen securing the screens firmly in any desired por 's'ition hythe rods 1) p and screw-nuts q q, substantiallyinthe manner and for the purpose herein set forth. a

2. The arrangement of the vibrating and rotating screens with each other in such a manner that by tilting the screen 4 (or its equivalent) in one direction the vibrating screens will be brought into combination with the rotating screens, and by tilting the screen 4 in an opposite direction the vibrating screens will. be disconnected from the rota-ting screens and brought into combination with the tailboard G, substantially as herein set forth.

DANIEL cLoW.

Witnesses:

J AMES GLOW. ABM. OLoW.

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