Патент USA US2105481код для вставки
Jan. 18, 1938. I 1.. JOHNSON ET AL 2,105,481 GRAIN SEPARATING DRUM Filed Feb. 11, 1956 LM En M “I NR]VRNEo?M?. u.Tm. SunMN . Patented Jan. 18, 1938 2,105,481‘: units!) states PATENT OFFICE 2,105,481 GRAIN SEPARATING DRUM Leonard Johnson and’ Martin A. Rieman, Minne apolis, Minn, assignors to Hart-Carter Com pany, Peoria, 111., a corporation of Delaware Application February 11, 1936, Serial No. 63,349 2 Claims. (Cl. 209-95) Our' invention relates to the separation of in which case with the improved compound val; grains and particularly to the’ separation of ley and ridge-forming corrugations‘ the different grains by the use of rotary drums; the invention type of separation above indicated, or hereinafter consists in providing the drum with corrugations more fully described, will take place. of‘novel‘ formation whereby novel and highly im As best shown in Fig. 3, the drum is corrugated :3 portant results are obtained. to form the valleys and intervening. ridges. The Hitherto grain separating drums have been valleys are deep and narrow and their walls di provided with indentations or pockets designed verge slightly so that the grain received therein to receive certain kinds of grains and to reject will be gravity held but not frictionally held. ‘ other kinds of grains, according to the varying The ridges 9 formed between the valleys 8 are lengths or general" formation thereof but not also of novel design, and they extend from lines solely by the thickness thereof. ‘In this speci? marked “a” to lines marked “b”. The valleys cation and’ in the claims we use the term “thick proper terminate on the lines “a” and the ridges I ness’f to indicate, or to mean, the narrowest or begin on these lines and converge to lines “D” smallest dimension‘ of the grain kernel. that form their salient angles. The width of 13 In accordance with our invention the drum the valleys 8 will vary in" di?erent' machines‘ac is corrugated longitudinally to form, on the inner cording to the kind of operations to be accom surface of the drum, long valleys and interven plished. If, for example, the function to be ing ridges. These ridges may, and preferably are, performed is the operation of thin or shrivelled or extended from end to end of the operative sur undeveloped oats from relatively thick and well a V face of the drum. The nature of these novel developed oats then the valleys should be just corrugations and the functions that they perform wide enough to receive the relatively thin grain will be more apparent after having ?rst described when the kernels are extended longitudinally in more in detail a commercial form of the im the valleys, but not wide enough to receive the 25 proved corrugated drum. relatively thick oats. Referring to the drawing which illustrates the When the mixed or commingled grains of vari invention and wherein like characters indicate ous thickness are fed into the drum, and the like parts throughout the several views: drum is rotated, the grain will be carried upward Fig. 1 is an elevation of the improved drum on the rising side of the drum and will roll back 30 some parts being broken away and some parts ward over the ridges under the action of gravity. in being sectioned. While the grain kernels, which we have assumed E Fig. 2 is a fragmentary plan view looking at the inner surface of the drum. Fig. 3 is an enlarged transverse section taken 35 on the line 3—3 of Fig. 1, and Fig. 4 is the section taken on the line 4-4 of Fig. 3, some parts being broken away. The drum illustrated comprises a sheet metal shell 5, and open heads 6 and 1. The drum, as is 40 obvious, may be supported and operated in var ious different ways but may be assumed to be a drum of a grain separating machine of the type disclosed and claimed in the Ingraham Patent to be oats, get parallel to the valleys, the rela tively thin cats will fall into the valleys and will be carried upward to a point high enough for the discharge into the receiving trough, not Ju ‘ shown, but which, as stated, would be provided in the machine of the type indicated. It is important to note that the ridges 9 slant back from their salient edges “1)” toward the two adjacent valleys, so that the oats or other grain rolling down the incline will tend to become par allel to the valleys. When the grain, assumed to #2,015,400, dated Sept. 24, 1935. The drum of be oats, get parallel to the valleys the shrivelled, poorly developed and relatively thin oats will drop pockets which reject long grain such as oats, for into the valleys while the thick oats will not enter the valleys but will be rolled back toward the bottom of the drum. The ridges formed, as de 45 that machine is provided with indentations or example, but pick up wheat and carry the same to a high elevation where the latter will be dis charged from the pockets into a receiving trough 50 thereby accomplishing the operation of relatively short from relatively long grain but irrespective of the thickness or smallest dimension of the grains. In a general way it may be assumed that the improved drum may be used as a sub 55 stitute for the drum of the Ingraham patent but scribed, carry the grain in such a way as to pre vent the grain caught in the valleys from being swept out of the valleys. The thin or narrow grain, regardless of length, lodged in the valleys at the lower portion of the drum will, under the action of gravity, be held in the valleys until the valleys have reached an elevation at which gravity, instead of holding the 2 2,105,481 grain in the valleys, will dislodge the grain and ' or for the operation of different commingled grains wherein it is desired to take out of the cause the same to be “poured ou ” of the valleys and into the trough or catch receptacle within mixture relatively thin grain irrespective of the drum. Under rotation of the drum, and length. What we claim is: Cr especially when the drum is rotated at consider 1. A grain separating drum having longitudi able speed, centrifugal force will also tend to hold the grain in the valleys; and in fact, the nally extended, relatively narrow but ?aring sub grain will be held in the valleys until the latter stantially symmetrical valleys adapted to receive have reached such elevation and their walls grains transversely of their length and relatively wide and shallow intervening ridge-like portions 10 changed their angular position in respect to ver adjoining the upper edges of the valley walls at tical, to such an extent that ‘gravity will over angles thereto and providing oppositely inclined come centrifugal force and the sliding friction relatively long and ?at rolling surfaces which of the grain and cause the same to slide or roll out of the valleys into the trough or receptacle. are substantially symmetrical and on which grains are caused to roll about their longitudinal The diverging walls of the valleys, however, pre vent the grain from being wedged and frictionally axes toward said valleys upon rotation of the held in the valleys, and hence, the discharge drum. 2. A grain separating drum having .two alter thereof will be as above stated. nate series of valleys and ribs which extend lon As has been stated,lthe valleys 8 actually ter gitudinally thereof, the walls de?ning the valleys minate on the lines “a”. It will be understood that the width of the valleys is determined by being substantially symmetrically arranged and the distance between the lines “a—al”, and that flaring apart a distance slightly greater than the the reversely beveled, or inclined surfaces of the transverse dimensions of grains to be received therebetween from adjoining ribs and said ribs ridges are beyond said lines “a”. having oppositely inclined substantially sym With the valleys and ridges extended from, or approximately from, end to end of the operating metrically arranged wall portions each being of surface of the drum, all of that drum surface is substantially greater width than the width of said valleys and of such heighth and inclination rendered effective for accomplishing. the opera with respect to the valley walls as to provide tion by the thickness above described. Obvi ously, length of the grain or material does not substantially flat wall surface portions on which enter into the operation, inasmuch as the thin grains are caused to roll about their longitudinal long grain kernel will get into a valley as readily axes toward the adjacent valleys depending from said portions upon rotation of the drum. as a shorter one of the same thickness. This type of operation is highly important for the ' operation of not only thin and thick oats but thin and thick barley and thin and thick wheat _LEONARD JOHNSON. MARTIN A. RIEMAN.