t, s, 1946. 2,408,729 J.‘ w. BRACKETT CUTTING MACHINE 5 Sheets-Sheet 1 .Fv‘iled April 14, 1944 hang-l152K BY 7 ATTORNEYS Oct. 8, 1946. _ 2,408,729 J. W. BRACKETT CUTTING MACHINE 5 Sheets-Sheet Filed April 14, 1944 : Ila-_“F.lin; BY ' 'A‘FIDRNEYS Oct. 8, I946. ' J}. w. BRACKETTY ' 2,408,729‘ CUTTING MACHINE Filed April 14, 1944 5 Sheets-Sheet s R‘ \l , \x, E Q Q Q \ v ' l ,v Q _ w _ I “a ‘“ \ y ‘ “‘ WNW ' 1 v " 7 9% _ ‘B ‘ _ Rs 1: - v \3 ml?“ “ - I ¥ l & \x b“ \ - - J u i \ i ‘ Q H w 38 \0 3. Q \ ‘a N N N Q, “\5 . ‘ A __ I i; I:= \ . - E \ I l N § g E’ ‘38% 3"‘ \~ - (/6666 ' \ T . ‘ J v f _ d 0%6/LZ INVENTOR. ' ATTD R N EYE oct- 8, 1945- '.J. w.‘ BRACKETT CUTTING MACHINE I Filed April 14, 1944 2,408,729 Y ‘ - 5 Sheets-Sheet 4 \\\\\ \\\\\\\ \\ \\ m ATTORNEYS Oct. 8, 1946. J. w. BRACKETT 21,498,729 CUTTING MACHINE Filed April 14, 1944 5 Sheets-Sheet I -: I . Z -I 2: w . a} * (/6688 MBra 0%61! INVENTOA BY 3 to the axis of the clutch ring 18 so that the clutch part may rotate freely in one direction relatively to the clutch ring 18 but is restrained from ro- v part I56. These two shaft parts may be con nected as a unit by moving the clutch member I60 into engagement with the clutch disk I68. A plate like frame member I10 is provided with tation in the opposite direction so as to prevent reverse rotation ‘of vthe feeding rollers 26. The an opening I12 loosely receiving the; clutch mem clutch part 80 is also provided with recesses 90 ber I60 and the disk I68. for housing spring pressed roller elements 92.; The bottom faces of these recesses are also tan To the plate I10 is - bolted a cam ring I14 having a groove I16 pro vided with an offset run I18. This ring is of gentially arranged so that the clutch ring 82 may ‘such internal diameter as to permit the clutch turn freely in one direction relatively to the 10 member I60 to rotate and shift axially relatively clutch part 80 but becomes ?xedly related thereto’ to the ring. A pin I80 is attached to the clutch when the clutch collar is turned-in the opposite member I60 and rides in the groove I16 to shift the clutch member longitudinally on the shaft direction. In Figure 1, counterclockwise rotation. of the arm 84 imparts clockwise motion to they ' section I58 into and out of engagement with the feeding rollers 26 for- advancing the slab, while clutch disk I68. ~ v“clockwise rotation of the arm is consummated Circumferential ribs I82 are provided on the independently of the gear 66 by reason of the clutch member I60 having‘meshing engagement *clutch 68 so as not to- impart any reverse rotation vrith ribs I84-on a bar I86 slidably mounted in *to the feeding rollers 26. » aligned openings I88 in the member I10 and the _One end of a link 94 is pivotally connected 20. ring I14. To the bar I86 isattached a jaw I90 with-the arm 84 by a bolt 96 extending through a engageable with teeth I92 on the face of the disk "slot- 98 in the arm. This link is slidably guided I68 opposite the teeth I66 in one position of the ' in bearings I00 attached to the hood I6 and is clutch member I60. In the other position of the " provided with a cam I02 attached to the link by clutch member I60 the jaw I90 is clear of the bolts I04. This cam is actuated by two rotary 25 teeth I92 to permit free rotation of the disk. The ‘cams (I06 respectively attached to shafts I08. jaw I90 functions as a momentum arrester upon i‘Ea'chl'shaft I 08 is provided with a gear IIO, see disengagement of the shaft sections I56 and I58. vI-Figure 3, meshing with a gear H2. The cam I02 A sprocket I94 is attached to the lower shaft ' is located in the plane of the rotary cams I06, - and includes two projections II4 respectively en I08 and connects with a chain I96 passing around -_gaged ‘by the ‘rotary cams. Figure 1 illustrates a relatively large sprocket I98 attached to the section I58 of the upper shaft I08. The upper - the upper rotary cam I06 in a position to pass gear IIO rotates as a unit with the upper cam ‘I over the upper projection II4 to position the link ' jection II4 positioned for engagement with the lower rotary cam I06 to slide the link' 94 to its I06'Ibut is freely mounted on the upper shaft I08.: The chain I96 drives the upper shaft I08, while the intermediate gear II2 supplies power to the upper gear IIO, the two gears I I0 being ‘ other extreme position. Thus the projections I I4 of the same size so that the two cams I06 will - 94 in one extreme position, with the lower pro are successively engaged by the respective ro :‘ tary cams I06 to impart reciprocatory motion to maintain the same relative positions at all times. While the cams I06 rotate continuously, the - the link 94 and oscillatory motion to the arm 84. 40 slab 38 is advanced forwardly at spaced intervals The stroke of the linkv 94 may befvaried through and the clutch 68 disengages during the descend substitution of .cams having larger or smaller ing and ascending movement of the blade I26. throw of projection arrangements. The cam I02 At the same time, the clutch structure of Figure 6 ' is detachably connected with thelink to facilitate . iThe :lower-shaft I 88 . functions to arrest movement of the cutting blade in its uppermost position while the slab is being Lsuchtsubstitution. . drivenbyr a speed re ducer I18 operated by a shaft I20 to which is reconnected a drive pulley I22 for connection with ‘ a motor, not shown. Vertical guides I24 are 10 " cated at ‘opposite sides of the machine for slid- . advanced into position for cutting another strip therefrom. Figure 7 illustrates the offset run I18 as being of relatively short length with respect to the circumference of the groove I16. The _;clutch structure of Figure 6 is engaged while the ably guiding a cutting blade I26, see Figures 2, 9 pin I80 is riding in the groove I16 outside the and 10. This knife is supported between b-ars ‘run. I18, which groove is of sufficient length to -_ l28secured into a unitary structure by. bolts I30, permit the strip cut from the slab to be cut into one-of? the bars 128 being provided with two the requisite number of pieces. » z?angelike bodies ‘I32 slidable inthe guides I24. 55 Means for cutting the strip 200 of Figure 1 ~Tol.each.fiange .I32 vis pivotally connected the into cubes comprises a right angular ?ange 202 '3 lower .end of an arm I 34 having its upper end ‘.,pivotally. connected at I36 with a wheel. I38 con vistituting a crank for operating its arm I34 to I on the blade I26. This strip lies on a line of horizontal rollers 204, see Figures 14 and 15. An upper line of rollers 206 hold the strip in position ‘impart reciproc’atory motion .‘to the blade I26. 60 'on the upward stroke ‘of the ?ange 202. The ‘Each wheel I38 is attached to a rotative shaft. I 40 table I 0‘ affords support for the rollers 204, While provided with a sprocket I42 for connectionwith the rollers 206 are mounted in a frame 208 car -~a‘chain I44; These chains pass, around sprockets ried by arms 2I0 adjustably mounted on upright ; I46;keyed'to arotative shaft I48. This shaft is supports 2I'2 through the medium of bolts 2I4 ‘provided with a sprocket I 50 connected with a extending through slots 2I6 in ‘both the supports ‘chain I52 passing'around a sprocket I54 driven ' and the . arms. A row of rollers 2I8 is arranged ' by'the upper shaft I08. ' . in a straight line for rotation about verticalvaxes a‘ The'up‘per shaft I08 comprises co-axial shaft > in a common plane; and arranged to engage one sections I56 and-I58. In Figure 6, a clutch mem » side of. the strip: 200. These rollers are also ~berLI60'isUsplined tothe shaftl58, as at I62, so mounted in a frame 220 carried by arms 222 ad thatthe clutch ‘part may be shifted longitudinal iustably mounted on the upright supports 2I2 .~ly of the shaft but is keyed ‘for rotationthere ‘through the medium of bolts - 224 vextending with.‘ One face of the member I60 is provided through the slots 2 I 6 in'the supports'2 I 2 and slots with teeth I64 engageable with teeth I66 on one .226 in the arms 222. ifaceof aclutch disk I68 attachedto' the shaft 15. . As the material is advanced intermittently, the 2,408,729 5 knife I26 reciprocates and severs a strip there from which has been designated as 200. The horizontal rollers then feed the severed strip laterally under the angular portion of the blade and the knife and the angular blade portion vcon tinuously reciprocate whereupon the angular blade portion severs into small sections the later ally fed strip. " In Figures 14 and 15 ahead 228 is provided 6 The greater length of the slab is supported on the conveyor 20, the rolls 26 and 28. The upper rolls are adjustable so that the slab may be formed to the desired thickness. The conveyor 20 operates to support the slab for easy move ment and to move the 'slab material uniformly throughout its entire width, because of the pins 24. The rolls 34 are preferably ribbed longitu dinally and are relatively heavy to perform the with pins 230 arranged to be projected into the 10 bulk of the pressing action. Without further elaboration, the foregoing will body of the strip 200 for advancing the strip step so fully explain my invention. that others may, by step to be severed by the ?ange 202. This by applying current knowledge, readily adapt the head is slidably guided by a bar 232 slidable in a bearing 234 and reciprocated through the 'me dium of a link 236. This link is provided with a 15 slot 238 for the reception of a pin 240 carried by the bar 232. The link 236 is pivotally con nected intermediate its ends, as at 242, with the table l0. A rotary cam 244 actuates the link for positively pivoting the same to the full line posi tion of Figure 15. As the end 246 of the, link same for use under various conditions of service. I claim: 1. In a machine as described, the combination of means for intermittently advancing a body of nlastic material. means for pressing the mate rial into a slab of predetermined thickness, a knife comprising a straight blade and an angu lar blade element attached thereto, means for imparting lateral movement to successive strips cut from the material ‘by saidstraight blade to bring successive strips underneath the angular tion for retracting the head 228 sufficiently far 25 blade element to be cut into pieces of predeter to bring the pins 230 clear of the strip. , passes over the corner 248 on the cam. a tension spring 250 snaps the link to the dotted line posi- ' mined size, means for actuating the knife. and means for actuating said advancing means in timed sequence with said knife. table Hi. This guide is slotted at 256 to provide 2. In a- machine as describedthe combination accommodation for a lateral projection 258 en gageable with the head 228 to afford additional 30 of means for intermittently advancing a body of material to be cut. pressure rollers reducing the support therefor when the strip is being pushed material to a predetermined thickness. a ver underneath the ?ange 202. A bearing 260 is tically reciprocating knife blade and an angular mounted on the table I0 to afford additional sup blade thereon. means for laterally moving a sev port'for the bar 252. To one face of the bar 252 The bearing 234 is attached to one end of a bar 252 slida‘ble in a guide 254 mounted on the ered strip of material in the path of movement is bolted a plate 262 through the medium of bolts of the angular blade to cut the strip into small 264. This plate is provided with two projections sections of predetermined size, means for remov 266 and 268 respectively engageable by cams 210 ing the sections from the angular blade, and a and 212. Shafts 214. 216 and 218 are connected with the cams 244, 210 and 212 and are rotatably 40 container receiving the removed section. 3. In a machine as described the combination journaled in the table l0. Gears 280 are respec of means for intermittently advancing a body of tively attached to the shafts and mesh to impart material to be cut. pressure rollers reducing the rotation to the cams. When viewing Figure 15, the cam 244 rotates counterclockwise. the cam 210 turns clockwise. while the cam 212 rotates counterclockwise. counterclockwise rotation of the cam 212 shifts the bar 252 to the left for im parting a feeding stroke to the head 228 and the pins 230. As the piece is cut from the strip 200, the cam 210 is brought into engagement with the projection 266 for moving the bar 252 to the right to bring the pins 230 to a position inwardly of the severed end of the strip. The cam 244 operates material to a predetermined thickness, a ver tically reciprocating knife blade and an angular blade portion located at one end thereof, means for laterally moving a'severed strip of material in the path of movement of the angular blade to cut the strip into small sections, means for re moving the strip from the angular blade, and a container receiving the removed sections. 4. In a machine as described the combination of means for intermittently advancing a body of material to be cut, pressure rollers reducing the material to a predetermined thickness, a ver in timed sequence with the action of the cams 210 and 212 so as to impart reciprocatory motion to the bar 232 at the proper time. , 55 tically reciprocating knife and an angular blade thereon, a roller conveyor for moving a severed To the shaft 218 is attached a bevel gear 282 portion of the material laterally in the path of meshing with a bevel gear 284 mounted on a movement of the angular blade to cut the sev shaft 286 provided with a sprocket 288 driving a ered portion into small pieces, means for re chain 290 passing around a sprocket 292 attached 60 moving the pieces from the angular blade, and to the shaft I48. a container receiving the removed pieces. Pieces severed by the ?ange 202 are pushed 5. In a machine as described the combination therefrom in the event of adherence through the of means for intermittently advancing a body of medium of a knocker 294 attached to a sprocket 296, see Figure 8, which sprocket is rotatably 65 material to be cut. pressure rollers reducing the material to a predetermined thickness, a ver mounted on one of the guides I24, see Figure 2, tically reciprocating knife having an end ?ange and driven by a chain 298. This chain passes forming an angular rblade portion, a roller con around a sprocket 300 attached to the shaft 286. veyor for moving a severed strip of material lat This knocker rotates in a counterclockwise di erally in the path of movement of the angular rection when viewing Figure 8 to remove the 70 blade portion to cut the severed strip into small piece 302 from the ?ange 202 and the short end pieces, means for removing the pieces from the length 304 of the blade I26. Both the blade and angular blade portion, and a container receivmg the ?ange are preferably toothed along. their the removed pieces. lower edges, as at 306. The cutting edges will of course depend upon the nature of the material 75 JESSE W. BRACKETT. being cut.