Патент USA US2106341код для вставки
Jan. 25, 1938. F. W. CUTLER 2,106,341 y FRUIT SIZER Filed April 22, 1935 \\ 2 sheets-sheet 1 \\ A TTOR Y. Jan. >25, 1938. F. W. CUTLER 2,106,341 FRUIT SIZER Filed April 22, 1935 2 Sheèts-Sheelt 2 Patented Jan. 25, 1938 21,106,341' UNITED STATES PATENT OFFlCE` 2,106,341 FRUIT SIZER Frank W. Cutler, Portland, Oreg., assignor to Food Machinery Corporation, San Jose, C‘alif., a corporation of Delaware ` Application April 22, 1935, Serial No. 17,646 l 1 Claim. This invention relates generally to the grading art, and is particularly concerned with certain improvements in apparatus for grading articles according to size. 5 A general object of the invention is to provide a grading apparatus especially adapted for use in rapidly grading fruits or the like according to size with minimum or no injury thereto. A more specific object is to provide a grading apparatus in which the grading operations are confined to predetermined grading Zones sepa rated by intervening non-grading zones, and having associated means for collecting and dis charging the graded articles so arranged that 15 the grading and discharge are effected in sepa rate zones. . Further objects will become more apparent from the following detailed description of a conc-rete embodiment ’of the invention taken kin 20 connection with the accompanying drawings wherein like reference characters denotev like parts throughout the several views: Figure 1 is a plan view of a fruit sizing appa (Cl. 209-102) rail 6, and the’bars 5, 5’. The aprons are secured to, and driven by three endless chains 9, the two outermost of which are arranged to travel in channel rails I0, mounted above the sectional sizing rails, and the innermost of which runs in 5 a groove II, extending along the upper edge of the central grading rail 6. All three chains are trained around sprockets I 2 secured to idler shaft i3 at one end of the machine, and sprockets lll secured to driven shaftI I5 `at the other end of the 10y machine. The shaft I5 is driven yby means of a chain It from a power shaft Il which is provided with a driving pulleyl I8 `to which power may be supplied from any suitable source to drive the chains and aprons in the direction indicated by the arrows. - It Will be understood that, in operation the bars 5,v 5',' are so adjusted that the width of the grade-ways progressively increases from the re ceiving end of the machine toward the other end, so that as the fruit is carried along the grade ways the individual pieces arereleased at various points therealong according to their size. As the fruit is thus released, it is received' upon the ratus constructed in accordance with the present 25 invention.' conveyer belts I9 which extend- beneath the Figure 2 is a sectional elevation taken along gradeways, and are trained around pulleys 2li se the line 2-2 of Figure 1. cured to transverse shafts 2l and 22. The con- I Figure 3 is a plan view of a modiñed form of _ veyer belts I9 are driven in the same direction, construction. Figure 4 is a sectional elevation taken along 30 the line ¿3_4 of Figure 3. Referring to Figures 1 and 2, the machine illus and preferably at the same speed, as the aprons 8, by means of a chain 23 trained around-sprech ets secured to the shafts I5 and 22, and distribu tion of the fruit to the packing bins 255 is ef trated embodies a suitable frame-work includ fected by means of shunts` 25 extending diagonal ing the several supporting standards I, to which ` ly across the conveyer belts. For purposes of 35 are secured the longitudinally extending side rails 2 carrying a table 3 therebetween. Shelves 4, mounted on the side rails 2, form supports for convenience, only two packing bins are illustrated as associated with each gradeway, but it will be understood that additional bins may be, and gen two serie-s of adjustable bars 5, 5', arranged in erally would be provided in practice. end to end articulated relation to form sectional 40 grading rails. A central stationary grading rail 5, mounted on a standard l, carried by the table An important feature of the present invention resides in the mounting and arrangement of the' articulated bars 5, 5', whereby to establish and 3, extends intermediate the sectional grading rails formed by the bars 5, 5', and is of generally Zones along the gradeways intermediate the triangular cross section as shown to form in 45 clined faces cooperating with corresponding op posed inclined faces on the bars 5, 5', to form twin trough-like gradeways extending longitudi nally of the machine. The machine illustrated is designed to receive 50 the fruit to be lgraded at its left hand end as viewed in Figure 1, and as the fruit is deposited in the gradeways it is carried therealong by means of a plurality of endless flexible aprons 8, the upper runs of which overlie and ride along 55 the opposing inclined faces of the central grading , maintain a series of non-grading sections or grading sections or zones, whereby to conñne the grading action to certain predetermined zones 45 separated by non-grading zones. This may be accomplished by mounting the alternate bars 5', in parallel relation to the central. grading I rail 6, and providing associated adjusted mecha nism operable to maintain said parallel relation 50 in all adjusted positions. In the illustrated embodiment, the bars 5’ are mounted in parallel relation to the central grad ing rail 6, and adjustment is effected by means of screw shafts 26, two of which are associated 55 2 2,106,341 with each of the bars 5', one at each end there of. The screw shafts 25 are rotatably journalled in bearings 21 carried on the shelves 4, and ex tended through threaded collars 28 secured to the bars 5', the latter being drilled to accommodate the inner ends of the shafts. Each pair of shafts is interconnected for simultaneous oper ation by means of a chaink 29 passing around sprocketslâ‘sß secured to the shafts, and one shaft 10 of each pair is provided With‘ a hand wheel 3|. for example, which require lextremely gentle handling to avoid injury thereto. The modified construction referred to is substantially the same as before except that the sized fruit is received by a series of short conveyer belts 32 extending beneath the grading sections of the gradeways, and is discharged by means of lateral conveyer belts 33 extending transversely of the machine beneath the non-grading sections of the grade ways. The conveyer belts 32 are supported by 10 . pulleys 34 secured to shafts 35, one of each pair It will be apparent that the hand wheels 3| constitute unitary controls for adjusting their asso- ' of which may be extended to one side of the ma ciated bars 5’ toward and away from the center - chine and provided with a gear 36 meshing with grading rail 6, whereby the angularity of the a corresponding gear 31 secured to a longitudinal The lateral conveyer belts 33 are 15 grading bars 5 may be adjusted to regulate the ' drive shaft 38. supportedby pulleys 39 secured to idler shafts 4|] and drive shaft 38. The several belts 32 and 33 sizing as desired, while at the‘same time the bars 5’ are maintained in parallel relation with the central grading rail at all times. ` ' may be driven by a chain 4I trained around Due to the parallel relation of the bars 5’ with sprockets secured to shaft I5 and one of the 20 respect to the centr-al grading rail, those portions r 20 shafts`35. ’ of the gradeways formed thereby obviously per It will be apparent that the modified construc form no grading functions so that the release of tion permits higher rapid operation Without fruit from the gradeways is conñned to those portions thereof formed by the angularly ar 25 ranged bars 5, and it will be observed that the arrangement is such that the non-grading sec tions of the gradeway are located above the shunts 25. ‘ Such construction and arrangement effectively 30 overcomes a serious difficulty heretofore en countered in the operation of divergent type fruit grader wherein the gradeways are continuously divergent throughout their entire length. It will be understood that in operation the fruit is car ried along the gradeways at considerable speeds, so that if it happens to be released at such a point as to cause it to strike any of the shunts it may do so with such force as to result in serious injury to the fruit, thereby rendering it unñt for 40 sale. It has accordingly heretofore been neces sary in the operation of such machines either to run the risk of injuring a considerable portion of the fruit or to limit the speed of the machine so as to prevent fruit from being-thrown against 45 the shunts with sufficient force to injure it. Ob " vìously, these difficulties are avoided by the use of my invention since the machine may be run at whatever speed desired with no danger of the fruit _falling from the gradeways on to the shunts, due to the latter being arranged under the non grading sections of the gradeways. The modified construction illustrated in Fig ures 3 and 4 is especially adapted for high speed operation with delicate fruits, such as ripe pears danger of injury even to very delicate fruit since due to the elimination of the shunts the fruit does not contact with any stationary structure 25 in being discharged from the machine,` and at the same time the arrangement of the lateral dis charge belts 32 beneath the non-grading sections of the gradeways prevents any mixing of the sizes discharged rfrom adjacent grading sections of 30 the gradeways. Having now described my invention and in what manner the same may be used, and what I claim to be new and desire to protect by Letters 35 Patent is: In a grading machine, a pair of longitudinally extending grading elements arranged in spaced apart relation to form a sizing gradeway, one of said grading elements comprising a series of sec tionsarranged in alternate parallel and angular 40 relation with the other grading element to form a series of grading sections separated by a plurality of intervening non-grading sections, a plurality of adjusting means associated with each of said parallel sections, a unitary control associated 45. with each set of said adjusting means for simul taneously operating the same to move their asso ciated section toward and away'from the other grading element, and in conñned parallel rela tion thereto, and means arranged beneath said non-grading sections for separating the fruit dis charged from the respective grading sections into segregated groups. - ` > ' FRANK W. CUTLER.