y 0d» l, 1946-- F. F. F'ELDMANN 2,408,510 NUTCR-ACKING MAQHINE Filed Nov. 22, l1945 2 sheets-sheet `:L INVENTOR Nè A Tr'y Oct'. 1, 1946. FfF. FELDMANN f 2,408,510v ` NUTCRACKING MACHINE Filed Nov. 22, 1943 __ _ ' L@ 7 \ \ L _ _ _ 2 Sheets-Sheet 2 __ 6 «à u / I - FIG. 4 )27. @Éîîy w l5 . , . l . lNVENTOR 2,408,510 Patented Oct. 1,l 1_946 UNITED STATES PATENT *OFFICE ' 2,408,510 Nur CRACKING MACHINE Fred F; Feldmann, San Jose, Calif. Applicata@ November z2, 1943, serial No. 511,370 y 1 Claim. (c1. 14s-12) ' discharge upon the inclined surface 5; vand vthe chute I4 passes through the hopper 9 to discharge upon the inclined surface 6. will receive a continuous ñow of nuts of y‘a suit Disposed on the top edges of the several hop able kind, grade them as to size, and crack a pers, and consequently lying in a horizontal plane, number of them at the same time. and extending outwardly from the center there It is another object of the invention to provide of, are a number of substantially >radially dis a machine constructed and arranged to roll the posed involutely curved elements as I7 .to form vnut during the cracking operation in such a man a number of paths of travel for nuts deposited ner as to spread ‘the cracking operation over a greater area 'than 'is ordinarily the case, and to 10 on the center. Since the spacing Vof these ele ments gradually increases toward the edge of -increase the ‘area of 'cracking' by gradually in the outer hopper, .it follows that the smaller nuts creasing the pressure as the 'nut is rolled. Finally, it is 'an object to provide 'a ’machine . will drop into the hopper I3 and thence through the chute I8 to the inclined surface i; "the .nuts of the character indicated that “will effectually dropping >into the next larger hopper n I2 are ‘dis crack an unusually high percentage of 'nuts _with charged on to the surface 5, the .larger nuts drop out breaking up the ‘meat’ïth'e‘reim one that will It `-is one object of the present invention to pro vide a machine ofthe character indicated that ping into the next-to-the-largest Ahopper II and be extremely simple in vcohstruction and opera thence to surface '6; and the largest nuts drop tion; and one that will be economical to con ping into the largest hopper 9 and thence to the struct and operate, Strong, durable, and highly ` 20 inclined surface 4. efficient in its .practical operation. Since the nuts are deposited yin any suitable manner upon the center of the grading device it is necessary to spread them over the same by In the drawings: Figure 1 is a side elevationalview of a device embodying my invention, with parts broken away. means of some suitable mechanical device. For `Figure 2 is a top plan View on line 2-2 of 25 this purpose I provide a rod I8 positioned to Figure 1 of one half of the grading structure. overlie the grading surface and curved in the Figure 3 is a View taken on line 3-3 of Figure direction opposite to elements Il as shown, and 1, parts being broken away. y extending downwardly through a centrally dis Figure 4 is a plan view on line 4-4 of Fig ure 3. posed supporting tube I9 to the bottom portion ` _ Figure 5 is a diagrammatical illustration of the 30 of block 3 where it is fitted with a bevel gear 2U. The gear 20 meshes with a bevel gear 2| on a nut feed chutes relative to the center of the ma The machine shown in the drawings comprises shaft 22 journaled in block 3, the outer end of shaft, 22 being. provided with a bevel gear 23 a base member I, this member being an I beam which meshes with a bevel gear 24 on the shaft fitted with end plates as at 2. On the member I is mounted an oblong block as 3 having its top surface formed to present two inclined sur faces as 4 and 5 sloping downwardly to one side, and two other inclined surfaces as 6 and 'I sloping 25 of a motor 26. The result of this arrange ment is that when the motor 23 is in operation the curved rod I8 is rotated about the center of the device and caused to push the'nuts outwardly chine. downwardly to the other side. , ~ , on the grader until they drop into the hoppers 40 for which they are fitted. Mounted on supports 8 arising vertically from the two ends of the block 3 is a hopper 9 dis charging through chute I0 on to the inclined sur ‘From the several inclined surfaces the nuts roll down into the cracking mechanism which will now be described. Arranged along on oppo site sides of the parts l, 2 and 3 and in spaced face 4, said hopper in the present case being hemispherical in form and having its top edge 45 relation thereto, are a pair of crushing plates as 2ï and 28 joined by links 29 and 30 at their ends, lying in a horizontal plane, as shown. Concen the said links being pivotally attached to the trically mounted within said hopper v9 and with plates as at 3| and32, and also pivotally con their top edges al1 lying in the saine horizontal plane as the top edge of hopper 9, are three pro gressively smaller hoppers as indicated at II, nected at the center to the centers of the end platesZ, as at 33 and 34.- One of the plates, as I2 and I3, suitably spaced from each other and ' provided with discharge chutes at I4, I5 and I6. The chute I6 passes through hoppers 9, II and I2 to discharge upon the inclined surface 1; the chute I5 passes through the hoppers 9 and II‘to 55 thereof as at 36, the other end of the link being connected to a crank 31 on shaft 25 of motor 26. When the motor is in operation the plate 21 21, has a -link 35 pivotally connected to one end is reciprocated through the medium of the crank 3 2,408,510 31 and link 35. But since the plates 21--28 are connected by the links 29 and 30 which are in turn pivotally mounted at their centers on the base I---2, it follows that the reciprocation of plate 21 will also effect the reciprocatîon of plate 28, at the same rate of speed but in the opposite direction. This mounting of the plates 21-28 causes them to be spaced furthest from the cen ter base l when the links 2.3-30 are at right 4 and thereby be caused to drop into their proper hoppers. The nuts passing through hopper 9 and falling upon surface 4 roll down between plates 2l and 43. If plate 21 has just completed its crushing movement and starts to swing outward ly again the nut merely settles further down be tween the two plates, but when the plate swings inwardly again it travels in an arcuate path and simultaneously ,rolls the nut and increases its angles to the longitudinal plane of the base I, 10 pressure thereon in such a manner as to crack it as shown in solid lines in Figure 4, and to ap over a large area, and so permit complete removal proach the said base when moved in either di of the shell without injury to the meat. rection from said last mentioned position. If, In this machine the nuts may ñoW continuous for instance, the links 29-30 swing in the direc ly down between the crushing plates, and a large tion indicated by arrows 38, the pivots 32 move 15 number may be cracked at each closingmove through the arc 39 and the working faces of the ment of the crushing plate, but since they are ac two plates 21-28 are swung to the position indi curately graded as to size they all receive the cated in dotted lines at 40. When the movement same treatment, and drop into a waiting con is reversed and the links 29-30 swing in the op tainer ready for ñnal cleaning. In moving from posite direction the Working faces of the plates 20 the extended position tothe contracted position 21-28 are Withdrawn from the plate I and then and back again the crusher plate rolls the nut swung back toward the same to the position indi twice, giving it a preliminary cracking and then cated in dotted lines at 4I. a finishing cracking which completely releases Opposite each plate ‘2l-28, and swingably the shell from the meat. mounted in the base structure as at 42 are ad 25 Having thus described my invention, what I justable plates 43, 44, 45 and 46, each plate be claim as new and desire to secure by Letters Pat ing adjusted about its pivotal mounting by means ent is: of cams as 4l on a rotatable shaft 48 and operat In a machine for cracking nuts the combina ing against its lower rear edge. This latter ad tion of, a fixed horizontal supporting member, justment is desirable so that the space between 30 plates adjustable for vertical inclination mounted the plates 2l-28 and plates 43-44-45-46 may on each side of said member and means for ef be quickly and accurately adjusted to the par fecting said adjustment, crusher plates disposed ticular type of nut to be cracked. in spaced and opposed relation to said ñrst men Assuming that soft-shell walnuts are to be tioned plates, rocker arms pivotally mounted at cracked preliminary trials will quickly indicate their centers on said supporting member and piv the exact setting for the several plates 43 to 46 otally connected at their ends to said crusher with relation to the plates 2'§-28, the movement plates to support and actuate the same simul of said plates being determined by the length of taneously, >and means operative to actuate the the crank 3l. Walnuts flowing upon the center rocker arms and crusher plates. of the grading device will quickly be distributed 40 over the same by means of the rotating arm I3 FRED' F. FELDMANN.