US1415811A

US1415811A - dossor

Info

Publication number: US1415811A
Authority: US
Publication date: 1922-05-09
Anticipated expiration: 1939-05-09

Description

F. M. DOSSOR. APPARATUS FOR CLEANING AND SEPARATING SEEDS, GRAIN, AND THE LIKE.

APPLICATION FILED OCT. 4,1920.

Patented May 9, 1922.

SHEETS-SHEET I.

F. M. DOSSOR. APPARATUS FOR CLEANING AND SEPARATING SEEDS, GRAIN,AND THE LIKE.

APPLICATION FILED OCT. 4, I920 Patented May 9, 1922.

. 2 SHEETS-SHEET 2.

lkw

FI G1 4.

F Gg/ FIG:- 5. 1

. 1,- Q N/ Zip F P M L K/ Inventor. fieden'c/(IMDosson FREDERICK M. DOSSOR, Oil DONCASTER, ENGLAND,

APPARATUS FOR CLEANING AND SEPARATING SEEDS, GRAIN, AND THE LIKE.

Specification of Letters Patent.

Patented May 9, 1922.

Application filed October 4, 1920. Serial No. 414:,645.

'1 0 all whom it may concern Be it known that I, Fnnnnmcn h'lALooLiir Dosson, of Balby, Doncaster, in the county of York, England, a subject of the King of Great Britain and Ireland, have invented new and useful Improvements in Apparatus for Cleaning and Separating Seeds, Grain, and the like, (for which I have filed an application in England Sept. 3, 1919,) of which the following is a specification.

This invention relates to sieve apparatus for cleaning and separating seeds and grain, and also to combined sieve and belt apparatus for the same purpose, for example, of

the type described in the specification of my prior Patent No. 115 1102.

My present improvements are designed firstly, to obtain a more perfect or quivering upright vibratory separating motion of the sieves, and to combine such upright vibratory separating motion (continuously operating either at one or both ends of the sieve) with a percussive motion momentarily applied at predetermined and comparatively slow intervals preferably in an upright direction for the purpose of clearing the sieve of adhering particles; secondly to employ a rotary sieve-clearing brush carried by the driving chains; and thirdly to provide a driving gear in which the various speeds required for the sieve motions, for the feed device, and for any belt or other auxiliary separating apparatus that may be employed in conjunction with sieves are obtainable from a single main driving shaft.

Description 0/ accompanying drawing.

Figure 1 is a side elevation of my invention showing two sieves superimposed.

Figure 2 is an end view of the lower sieve of Figure 1 showing the means fortransmitting the drive and for creating the sieve motions.

Figure 3 is an elevation of rod mounted upon the driving chains and carrying rollers which operate to effect the percussive motion of the sieves.

Figure 4 is a part of one end of the lower sieve showing a portion of the vibrating percussive mechanism connected therewith.

Figure 5 is a side view of lever arm supporting the sieves and for giving the vibratory and percussive motions thereto.

According to my present invention the inclined sieve or pair of superposed sieves A A, are mounted within a suitable upright rectangular frame B. A pair of cross shatt'ts C C i provided beneath each sieve, at top and bottom respectively, each cross-shalt being fitted at opposite ends, beneath the side of the sieve, with a pair of wheels D having continuous rounded or compa 'atively shallow grooves E upon their peripheries to give the desired continuous upright vibratory separating motion to the sieve A by means of the roller F F, interposed between the escalloped wheels D D and the corners of the sieves A A. But these rollers instead of being carried by the sieve 0r sieves directly, are each carried at an intermediate point by a suitable lever arm (1' G, pivoted at H to the frame B or at J to a bracket K secured to the driving chain support or guide bar L supported indirectly by the frame 13 aforesaid. The arms G G, have terminal glOtbearings M adapted to support the sieve by means of slot pins or trunnions N fitting the said slots M, projecting from the sides of each sieve at each end. sieves are thus detachable and interchangeable without any way interfering with the arms G G, or the rollers F F, as all that is required i to raise the said sieves until the pins N clear the slots M aforesaid.

Each lever arm G is formed with a downwardly projecting nose or cam surface P P, l

as shown in Fig. 5, on its underside, each pair of noses being adapted to make contact with a pair of rollers R R at comparatively slow intervals, mounted on supporting rods S carried by the driving chains T '1. By this means a percussive clearing motion is imparted to the sieve at top and bottom alternately at intervals as aforesaid. Or in place of the rod and rollers, a cam projection, or triangular links, may be attached inside the chains so as to maize contact with the said noses P P, on the arms G G. 'A similar rod U also carried by the chains T T, supports a brush V constructed to rotate by contact with the underside of each sieve A A. The bristles or pile of this brush arev short in length so that as the brush revolves they pierce the perforations of the sieve and act vertically to dislodge anything therein which has not been affected by the percussive motion before described. Both the upright vibratory motion and the percussive The "1 and chain wheels motion of the sieves are controlled by means of suitable spiral or other springs W WV, connected to each corner of the sieve to the frame B.

The escalloped wheels D D, for imparting the upright vibratory motion to the sieves are driven in series by a single endless chain Y Y integral with the wheels D D on each side of the machine, these chains carrying the sieve clearing brush or brushes and part of the mechanism for imparting the percussive motion, as before described, and each chain has guide wheels Z for maintaining the chain T in driving contact with the upper surface of the lower chain wheels Y Y, one of which guide wheels (mounted in a slotted bearing X) serves also as a tension wheel. The machine haft C which first takes the drive (whether hand or power) has its combined, escalloped and chain wheels D D, and Y Y, running loose upon it. 2 is a pulley keyed to shaft C and driven from any convenient countershaft or the like. 3 is a chain wheel also keyed to said shaft and connected by the chain a: with a larger wheel 5 keyed to one of the upper pair of cross shafts C C, and the adjacent combined escalloped and chain wheels, being also keyed to said shaft, impart the necessary drive to the chains T T. 6, 6, are chain wheels and 7 a chain for operating the feed device. 8, 8, are chain wheels, and 9 a chain for operating the worm 10. The said shaft C may be run at any arranged fixed speed and be geared at one end direct to, any other selected speed of the machine, which other shaft becomes in turn the driving shatt- "l'or the sieve motions and the feed roller. The shatt C is further geared or has a step cone 1i keyed on the opposite end to drive at any appropriate speed the belt or other auxiliary separating apparatus where such is employed in conjunction with the sieves.

I claim 1. A sieve apparatus for cleaning and separating seeds, and the like of the type aforesaid, comprising a frame, escallopcd wheels on the frame having rounded or comparatively shallow scallops; pivoted lever arms on the frame carrying a small roller engaging said scallops, pins or trnnnions upon the sieves resting in slotted bearings in said arms, gears on the frame and driving chains to impart motion to the sieves.

2. A sieve apparatus for cleaning and separating seeds, and the like, as claimed in claim 1, characterized by the lever arms having a cam projection or nose on the underside, and rollers or the like carried by the driving chains of the sieve motions engaging said projections, as and for the purpose described.

3. A sieve apparatus for cleaning and separating seeds, and the like, as claimed in claim 1, characterized by cross rod carricigl by the driving chains of the sieve motions; and a brush mounted upon the said rod and revoluble on contact with the underside of the ieve as and for the purpose, shown and described.

F. M. DOSSOR.