US284405A

US284405A - pendebgast

Info

Publication number: US284405A
Authority: US
Publication date: 1883-09-04
Anticipated expiration: 1900-09-04

Description

(No Model.)

'M FORDER 8u T. H. PENDERGAST.

. GRAIN SEPARATOR.

No. 284,405. Patented Sept. 4, 1883.

INVENTOR =V ATToRNBxs.

WITNESSES: f@ l 4 l N. Pneu Phare-umugnpmr, wnsmngm". D. c

v UNITED STATES 4PATENT OFFICE.

MILTON FORDER AND TIMOTHY H. PENDERGAST, OF DASSEL, MINNESOTA.

GAlN-SEPARATOR.

SPECIFICATION formingpart of` Letters Patent No. 284,405, dated September 4, 1'883.

To all whom it may conocerle,

Be it known that we, MILTON FoRDER ,an TIMOTHY H. PENDERGAs'r, both of Dassel, in

the county of Meeker and State of Minnesota,

having a series of annular compartments, and

obliquely-arranged chutes adapted to gather the grain in one part ofthe revolution of `the screen in one compartment and discharge it in a different part of its revolution in another compartment; and it consists, also, in ascreen of the aforesaid construction, in combination with an inner apertured cylinder and a return imperforate cylinder, substantially as hereinafter `more 'fully set forth and claimed. i Reference is to be'had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts inall the figures.

Figure l is alongitudinal sectional elevation of our improved screen and the case, the latter being in dotted lines. Fig. 2 is a longitudinal section of the outer `screen-cylinder, and Fig. 3 is a transverse section of the screen o n line The rst part of the screen consists ofthe inner screen-cylinder, a, of' perforated sheet metal or other approved material, into which the grain is discharged atthe upper andsmall-V `er end, b, from the spout c by the conveyer d or other approved means. This cylinder a and discharges the grain into cylinder e, to be carried back and discharged into the upper end of the outer screen, while the heads,

` straws, and` other large matter separated by the cylinder a from the grain are discharged from the end-g, outside of the screen-case separately from the grain.

We divide the outer screen into four or more sections by means of the internal annular iianges, h, to cause thegrain to'make one complete circuit of the screen in each section,

Application filed January 10, 1883. (No model.)

for more effectual action of the screen on it,

also for greater uniformity of action, which is attained by the confinement of the grain in the sections separately until the due measure of actiontherein,while in the ordinary screens, where the whole amount in the screen mixes together indiscriminately,some portions may pass along sooner than others, and thereby fail ofthe same measure of treatment.

In each section of the outer screen, f, we

arrange an oblique chute or bucket, i, in such .cockleand other matters smaller than the wheat, which matters are discharged into the hopper j, while the good grain is discharged throughthe spout k.

It will be seen that a screen of this improved construction will have nearly double the carangement of the outer screen makes it much i more efficient for separating the grain than the ordinary form.

We make the screen a slightly increasing in size from the receiving end outward, for causing the descent of the grain along it, and we increase the size of the returning-cylinder e in Vpacity Afor a given space than screens of the ordinary kind, and, besides, the sectional ar- 7 5 the opposite direction, for carrying the grain back to the head of screen j'. Thislatter screen we make cylindrical in form, relying on the chutes to convey the grain along it; but it maybe in taper,form; or the whole may be set with a downward inclination from the head, in which arrangement the inner screen may be cylindrical also; but the taper of the returning-cylinder would have to be greater.

Having thus described our invention, we claim as new and desire to secure by Letters Patent y y 1. In a grain-separator, the screen having a series of annular compartments, and obliquelyarranged chutes adapted, to gather the grainl apertured cylinder and the return imperforate 1o in one part of the revolution of the screen in cylinder, substantially as and for the purpose one compartment and discharge it in a differset forth. ent part of its revolution in another compartment, substantially as set forth. l glDERGA/ST V2. In a grain-separator7 the screen provided y with annular compartments or sections7 formed Witnesses: by annular flanges7 and with the oblquely-ar- L. W. LEIGHTON, ranged chutes7 in combination With the inner f W.BEASAW.