US107338A - Hezekiah cook - Google Patents

Description

H. COOK.

Grain Separator.

Patented Sept. 13, 1.870.

N. PETERS. Pmiolimgmpher. washingtnn. D. C.

HEZEKIAII 000K, OF .DILLSBURGn PENNSYLVANIA.

Letter-s Patent N o. 107,338, dated September 13., 1870.

IMPROVEMENT IN' GRAIN-SEPARATR.

The Schedule referred to nfthese Letters Patent and making part of the same To all whom it may concern Be it known 'that I, HnzEKrAH COOK, of Dillsburg, in the county of York and State of Pennsylvania, have invented anew and useful Improvement inGrain- Separatore; and I do hereby declare the following to be a full, clear, and exact description ot' the same, reference being had to the accompanying drawingin which` Figure 1 is a perspective view of my invention.

Figure 2 is a vertical longitudinal section of the same.

AMy invention relates toy that class of separators known as farming-mills, which is intended to separate t-hrashed' grain from the husks, straw, and chaff;

and

It consists of a peculiar arrangement otscreens, Ste., in a vibrating shoe, to be placed inthe ordinary fanning-mill, whereby the separatiou'is rendered almost or entirely perfect at one operation, so that it is not necessary to repass the tailings'though the machine. That others may 'fully understand myv invent-ion, I will'particularly describe it.

'lhe'shoe A is constructed and placed in the mill, in the same manner :1s-the ordinary shoe of a fanningmill. lt may also be vibrated by the'same appliances, so that there will be no dilculty experienced in replacing the ordinary shoe of Aany mill with one like my invention, hereindescribed.

Thesieves or. screens are, however, arranged inv a manner different from any other mill with which Iam acquainted.

In the first place, instead of employing a single screen at the top of the shoe, and extending its whole length, I employ 'two short or half screens, B G, the latter slightly below the other, and with the edges chamfered away, so as to vpermit the freest passage for air between the adjoining edges of said screens.

The blast comes into the shoe in the ordinarydirecticle-shown by arrows, and passes upward through the sieves B C, lifting thechal from the grain.

As the Vgrain falls over the lower edge of the upper sieve, it is exposed to a direct and free blast, coming between the 'adjoining edges of the screens, and said blast can, at that time, separate the chaff frein-the;

grain nuch more effectually than when' broken by passing through the meshes-ot' the screen. The chaff,l

-in short, is more electually loosened 'from the grain,

and more easily blown-over the tailof the-machine.

The grain which passes through the screeuilll` will be accompanied by a small quantity ofdirtand cl'lal, and will be returned to the front end ofthe screen E, by the return-board D.

vA slide, F, is placed below the screen E, to receive the grain as it passes through said screen, and by'said` slide the grain is returned to the long screen at the bottom ofthe machine, by means of which small forl eign seeds are separated from the good grain;

The inclined guard-sereen G receives a portion of the grain which falls through thenpper end of screen B, and causes it to pass down to the lower screen E. As;` shown in fig. 2, the screen E and slide-F are both made adjustable in their grooves, so as to secure the most eificientand satisfactory action. s,

Having described my invention, What I claim as new is l. The combinationand arrangement of the half sieves B 0,' the guard-screen G, and the lower screen E, as described and shown, and for the purposeset forth. V2. The combination' and arrangement of -thehalf- .sieves B C, guard-screen G, return-board D, screen E,and-riddleboaid F, as described and shown, and for the purpose set forth.

Witnesses:

. R. D. A0. SMITH,

J osEPH DEARDORFF.

HEZEKIAH coole

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