US 2936557 A
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Description (OCR text may contain errors)
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SANDWICH ASSEMBLY AND PACKAGING MACHINE l6 Sheets-Sheet 12 Filed July 21, 1958 INVENTOR. RUDOLPH J. FAY
ATTO RNEYS May 17, 1960 R. J. FAY 2,936,557
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RUDOLPH ATTO RN EYS United States Patent 2,936,557 SANDWICH ASSEMBLY AND PACKAGING MACHINE Rudolph J. Fay, Villa Park, Ill., assignor to Peters Machinery Company, Chicago, 111., a corporation of Illinois Application July 21, 1958, Serial No. 750,012
24 Claims. (Cl. 53-159) provided with projecting prongs affording cells or pockets for the reception of the sandwiches which permits them to be arranged in groups and stacks, the chains combined with control mechanism wherein the sandwiches being conveyed along a path of delivery are directed into ways of passage for automatic packaging in suitable containers available to the consumer.
Another primary object of this invention is to provide a sandwich machine for assembling cooky sandwiches and conveying them as flat objects in'a row, or plurality of rows, to suitable endless feeder chains or conveyors where they are indexed in groups, repositioned in a vertical manner and arranged into horizontal stacks, conveyed to an auxiliary conveyor, or a plurality of auxiliary conveyors which are arranged to extend at right angles to the main conveyor, removed from the main conveyor to the auxiliary conveyor, or conveyors, by power driven paddles moving transversely above the main conveyor, moved continuously in a side manner along the auxiliary conveyor, divided into pairs of stacks, or any suitable number of stacks, and finally conveyed onto a movable loading tray by which they are loaded pneumatically into the suitable containers arranged therewith for disposition as desired.
One of the objects of the present invention is the provision of novel synchronizing means whereby all of the moving parts are actuated in timed relation with each other in accordance to some circumstance or condition.
A further object of the invention is to provide novel means for removing the completed cooky sandwiches from the cooky sandwich assembly conveyor means, conveying the sandwiches along as flat objects to suitable means to index the same into groups of desired numbers, then indexing the groups to travel in upper and lower flights of travel for stacking and again lowering all the stacks to a common level for packaging at a plurality of stations.
A still further object of the invention is to provide means for repositioning sandwiches while they are moving as individual flat objects in groups on one conveyor,
' transferring them and arranging them upon a second conveyor in a vertical manner with contacting sides, and forming horizontally positioned stacks of sandwiches for traveling longitudinally thereon.
Another and more specific object of the invention is the provision of demountable buckets upon a continuously .running endless chain whereby the presence or absence 2,936,557 Patented May 17, 1960 "ice of the buckets running in a continuous manner will determine the number of sandwiches arranged into stacks for packaging.
Other objects and advantages, more or less ancillary of the foregoing and the manner in which all the various objects are realized will appear in the following description and accompanying drawings wherein there is assembled and pointed out certain details of structure and aggroupment of parts connotative of the scope of the invention.
Figure 1 is a perspective top view of a cooky sandwich assembly and packaging machine constructed according to this invention;
Figure 2 is a diagrammatic plan view of the machine shown in Figure 1;
Figure 3 is a fragmentary plan view of the upper section of the forward end portion of the main conveyor frame which joins the discharge end of the cooky assembly machine;
Figure 4 is a fragmentary plan view of the central section of the main conveyor frame taken substantially on line 44 of Figure 5 and showing the power driving shafts in position of operation;
Figure 5 is a side elevational view of main conveyor unit shown in Figures 3 and 4 with operating shafts, gears and associated parts shown dotted in position of operation;
Figure 6 is a fragmentary top plan view of the mechanism interposed between the main conveyor and the auxiliary conveyors arranged at right angles therewith, for removing the stacks of cooky sandwiches from said main conveyor and depositing them on the second conveyor, parts omitted for clearness of observing parts in position of operation;
Figure 7 is a fragmentary vertical sectional view of the main conveyor showing the mechanism for repositioning flat objects into a vertical position;
Figure 8 is a somewhat enlarged detail view of the article repositioning means shown in Figure 7, and with cooky sandwiches arranged therein;
Figure 9 is a fragmentary plan view of the entrance end of one of the auxiliary conveyors showing rods and associated means for moving stacks of cooky sandwiches in sidewise manner, combined with means for dividing them into pairs of stacks for dual packaging;
Figure 10 is a fragmentary side elevational View of the auxiliary conveyor, parts removed, showing the details of mechanism for moving the stacks of cooky sandwiches toward the packing end of the machine;
Figure 11 is a fragmentary top plan view of the mechanism shown in Figure 10, some parts omitted;
Figure 12 is a fragmentary side elevational view of the auxiliary conveyor shown in Fig. 9, some parts omitted;
Figure 13 is a fragmentary plan view of the packaging end of one of the auxiliary conveyors, showing the air cylinders and parts associated therewith for ejecting pairs of stacks of sandwiches into separate containers;
Figure 14 illustrates diagrammatically a circuit diagram of the electrical control system employed with this machine; a
Figure 15 is a fragmentary, diagrammatic, perspective view of the cams and chains for effecting oscillation of the shaft supporting fork means for moving stacks of cooky sandwiches;
Figure 16 is a fragmentary, diagrammatic, perspective view, similar to Figure 15, showing the stack straightening bridge members with clamping means associated therewith;
Figure 17 is a fragmentary, diagrammatic, perspective view showing the operating mechanism disclosed in Fig ure 12;
Figure 18 is a diagrammatic, perspective view, showing the operative mechanism disclosed in Figure 5;
seesaw Figure 19 is a diagrammatic, perspective view, showing the driving mechanism for parts shown by Figure and Figure 20 is a diagrammatic, perspective view, showing the driving mechanism as disclosed in Figure 7.
Referring to the drawings, there is disclosed therein a cookysandwich assembling machine and. conveyors coordinating together forcounting, stacking, dividing and packaging cooky sandwiches.
Briefly the sandwich machine of this invention includes a cooky sandwich assembly machine 20, a main sandwich conveyor unit 21 adjacent said sandwich assembly machine 20, two auxiliary sandwich conveyor units 22 and 23 adjacent the exit end of the main conveyor unit, positioned and extending at right angles thereto, each of said auxiliary conveyor units embodying two pneumatic packaging devices, each designated by the nu metal 25. The cooky sandwich assembling machine 20 includes a creme hopper 24, a depositor 26, four cookie troughs 27, a carrier chain 28 in the right side of the machine, a second carrier chain 29 in the left half thereof as shown in Figures 1 and 2; the present machine being designed to simultaneously assemble two rows of sandwiches. The carrier chains 23 and 29 have suitable cooky carrying pockets and are supported by shafts and sprockets not shown herein. Said cooky sandwich assembling machine is power operated by the intermediation of a timing belt 39 trained around a pulley 31 keyed on the common drive shaft 32 extending between the sides of the frame Work 36 and suitably journaled in bearings 33 and 34 therein for rotative movement, as shown by Figure 4. The common drive shaft 32 is shown as being driven by a motor 35, said motor made to be arranged in any suitable place and connected to said shaft 32 by any satisfactory means. Located above said pair of carrier chains 28 and 29 are assembled four cooky troughs 27 for holding a quantity of cookies C; two of the troughs 27 being arranged near the inlet end of the cooky sandwich assembling machine and two of the troughs 27 located near the outlet end of said machine. Between said pairs of troughs 27 is located the creme depositor 26. Cookies C are fed from the first pair of troughs 27 upon the traveling chains and thereupon they travel beneath the creme depositor 26 including an auger feed for depositing creme from two creme outlets to simultaneously deposit the creme on the cooky traveling at the same time in each of the two rows. The second pair of troughs 27 allows a cooky to be deposited upon the creme coated cooky, after which they are compressed together to spread out the creme located therebetween. After being compressed the two rows of cooky sandwiches S are moved by the two traveling chains 28 and 29 to the end of the as- V sembly unit 24} for transfer to the main conveyor unit 21 arranged and secured adjacent thereto.
The main conveyor unit 21 includes a suitable frame work 36 with side wall 37 for enclosing the same. Said power shaft 32 is located in the lower section of the main conveyor unit 21 as is clearly shown in Figure 5. A pulley 38 is keyed upon said shaft 32 adjacent said pulley 31 for transmitting power to said rnain conveyor unit 21. A speed reducing pulley 39 is secured to a shaft 46 extending transversely of the unit and rotatable in bearings 41 and 42 supported by a frame work 36. For driving said shaft 49, a timing belt is provided extending around said pulley 3% on shaft 32 and around said pulley 39 on shaft 4% for this purpose.
The cooky sandwich assembling machine 2t and the main conveyor unit 21 are driven'by the timing belts 36 and 43 on said common shaft 32 and maintain in synchronism.
Referring now to Figures 2, 3, 4, and 5, the preferred embodiment of the cooky sandwich conveyor, counting and stacking mechanism is disclosed wherein the parts are suitably operated and driven'from the common power shaft 32. In ordertocount thesandwiches and separate them for stacking, bucket type means are rotatably mounted intermediate the side walls of the conveyor unit. As a means to clarify the description of the machine, as viewed from above, in Fig. 1, the left side is marked LS. while the right side of the machine ising said shaft 45, a chain is provided extending around sprocket 44 and around sprocket 48 for this purpose. A shaft 50 is arranged transversely of the conveyor unit, the ends thereof slidably mounted in angularly arranged slot 58 provided in the side wall 37 with suitable locking means. Intermediate the ends of said shaft 50 are mounted thereon a pair of sprockets 51 and 52 spaced a suitable distance apart. An idler shaft 53 is located below and between said shafts 40 and 45, and arranged with a pair of idler sprockets such as sprocket 54 thereon, as shown by Figure 5. A pair of sprockets 56 and 57 are mounted upon shaft 45 and spaced transversely in line with sprockets 51, 52, and 54 associated therewith, each pair of sprockets equally spaced apart. A pair of endless bucket type chains 60 and 61 are provided with cross bar 62 -therebetween, the chains extending over said sprockets 51, 52, 54, 56 and 57. By adjusting the location of the end of shaft 50 within said slot 58 the endless bucket chains 60 and 61 can be maintained under desired tension. Said endless chains 6% and 61 have elevating buckets 63 spaced in pairs upon said rod 62, said rods being mountably secured with and between said endless chains as desired. The buckets are continuously arranged, and/ or removed, for counting the sandwiches traveling along sandwich troughs 64 and 65 shown by Figures 3 and 5.
The troughs 64 and 65 are constructed of pairs of angle irons suitably positioned adjacent each other with desired space therebetween. For moving sandwiches longitudinally within said troughs 64 and 65, movable flight chains 68 and 69'with depending pins 76 thereon are movably arranged thereabove, later to be described. The mechanism for driving the flight chains 6% and .69 willnow be described. A shaft 72 is transversely arranged "above said shaft 50 and parallel with said bucket counting shaft '45. A drive sprocket 73 is secured near the end .of shaft 45 adjacent the inner wall. 37 at the right 'side'of the conveyor unit 21. Asprocket 74 is xsecurednear the end of shaft 72 and in line with said sprocket 73. A drive chain 75 is disposed around each of said sprockets 73 and 74 for driving the shafts 72. An idler gear 76 is pivotally mounted upon a swinging arm which is secured to the side wall 37 to provide means tightening .gear 81 is pivotally mounted adjacent said chain for removing the slack therein. Intermediate the-ends of said shaft 77 is mounted a drive sprocket '82. Substantially vertically above said shaft 77 is rotatably mounted a short shaft 83 in bearings suitably spaced'and "secured to a wall'panclvertically arranged transversely of the :unit 21-and between the side walls 37 thereof,-.as ShOWn'iby Fig. 5. shaft 83 is'secured a sprocket 84 substantially vertically Intermediate the ends of"-saidishort above-said sprocket '82. For driving saidshaft 83, a chain 85 is provided extending around sprockets '82Eand 84. At the opposite ends of said shaft 83"a1' e:securcd sprockets86 and 87. Between the side panel 37 is -zsecured 'taa-supporting bar 88, said-bar beingarrangedforwardly of said. shaft 83 and in a plane substantially horizontal herewith. Two right angles drive units 89 and 90 are mounted upon said bar 88 as shown by Figure 1. Said drive units embody a housing of inverted L shape configuration, a vertical portion of each having base portion securedto said bar 88. The upper short horizontal portions of said housing extend towards the center of the unit 21. Each housing provided with suitable bearings for supporting short shafts embodied therein, said shafts having end portions extending outwardly from the housings and projecting inwardly of the machine. One sprocket is mounted upon each of said outwardly extending shaft end portions and are designated 91 and 92 respectively, shown by Figure 3. Two short chains 93 and 94 are trained over said sprockets 86, 87, 91 and 92 for driving short verticalshafts 95 and 96 mounted in and extending downwardly from said drive units 89 and 90 and projecting through an aperture in said bar 88.
A pair of horizontally arranged sprockets 97, 98 are arranged upon the lower end of said short vertical shafts 95 and 96 extending below said bar 88. Forwardly of said bar 88 is arranged and secured between the side wall 37 a wide horizontal bar 111, said bar 111 spaced above all of the forward flight chains and embodied therewith for conveying the sandwiches. .Four gear drive housings 99, 100, 101, 102 of the inverted T shape configuration have their base portions mounted upon the upper side of said bar 111; each housing having a vertical shaft mounted in suitable bearings therein. The upper ends of the vertical shafts 103, 104, 105 and 106 extend above the housings 99, 108, 101 and 102 and support gears 112, 113, 114 and 115 secured thereto, the lower ends of said four vertical shafts extending downwardly through said bar 111 have attached thereto flight sprockets 107, 108, 109 and 110, as shown by Figures 3 and 5. Flight chains 116 and 117 are trained about said flight sprocket 97, 98, 108 and 109 for conveying sandwiches as flat objects in the angular upper flight troughs 121 and 122. Two sprocket drive housings 123 and 125 -of inverted T shape configuration are mounted upon a wide horizontal bar 125, said bar mounted near the forward end portion of said conveyor unit 21 and in the same horizontal plane which embodies said bar 111. Vertical shafts 126, 127 are rotatably secured in said housings 123 and 124, the lower ends thereof extending through said bar 125 and supporting flight change sprockets 128 and 129 thereon. Said two flight chains 68 and 69 are trained about said sprockets 107, 110, 128 and 129 forconveying sandwiches as flat objects in the straight sandwich troughs 64 and 65 described above. 1
Dual troughs 135 and 136 extend rearwardly in the unit 21 as continuations of troughs 64 and 65, and are provided with an upper flight deck providingtroughs 64' and 65. The dual troughs extend from a .point directly above counting shaft and rearwardly therefrom. The
upper troughs 64 and 65' angle outwardly towards the side walls 37 of the unit 21 to a point above said bar 88 and then parallel with said side walls to the transfer unit 140 assembled at the end of the conveyor unit 21. The lower troughs 135 and 136 continue rearwardly paral- .lel to the side walls of the transfer unit 140. Therefore, said flight chains 68 and 69 will convey cooky sandwiches from the entrance ends of troughs 64 and 65 to the bucket counting means with bucket chains and 61 where a suitable number of cookies are elevated to the upper troughs 64' and after which the same number .of sandwiches are allowed to travel in troughs and 136. A pair of flight chains such as indicated at 116 (Figure 18) will convey the sandwiches in the angular position of the upper troughs 64 and 65' where they meet the continued straight portions 647 and 65' thereof.
p The driving means for conveying thesandwiches from the angular portions of troughs 64' and 65 to the sandwich stackers 141 and 142 on shaft 172 at the end there;-
scribed above. Two flight chain sprockets 145 and 146 are secured upon said shaft 77 in line with troughs 64" and 65". Forwardly of said shafts 79 are arranged two shafts 147 and 148 extending transversely of the con veyor unit 21 and mounted in suitable bearings in the side walls 37; shaft 147 arranged substantially below the exit end portion of troughs 64 and 65 while shaft 148 is arranged substantially midway between said shafts 45 and said shaft 147. Two flight chain sprockets 149 and 150 are mounted upon said shaft 147 and in alignment with said sprockets 145 and 146 on shaft 77. Flight chains 151 and 152 are trained over said sprockets 145, 146, 149 and 150 for driving said shaft 147. Said flight chains 152 and 153 are provided with outwardly extending flight pins 153 which project upwardly through the troughs 64" and 65" to convey the sandwiches to the outer stackers 141 and 142. To drive the shaft 148 a sprocket 155 is rigidly mounted upon shaft 147 intermediate sprockets 150 and the left end thereof, as shown by Fig. 3. A sprocket 156 is rigidly mounted upon shaft 148 and in longitudinal alignment with sprocket 155. A chain 197 is trained over said sprockets 155 and 156 driving said shaft 148. For conveying the sandwiches to stackers 143 and 144 two flight chain sprockets 158 and 159 are rigidly mounted upon said shaft 148 below the lower flight troughs 135 and 136. A short flight chain sprocket shaft parallel with shaft 148 is suitably mounted in bearings mounted upon a vertical wallin the transfer unit 140, as shown by Figs. 6 and 7. Two flight chain sprockets 163 and 164 are rigidly mounted upon the ends of said shaft 170 in longitudinal alignment with said sprockets 158 and 159 mounted on shaft 148. Two flight chain sprockets 167 and 168 are freely rotatively mounted upon shafts 77 and are aligned with sprockets 158, 159, 163, and 164. Two flight chains 165 and 166 with flight pins 160 thereon are trained over said sprockets 153, 159, 163, 164, 167 and 168 whereby said pins 160 project upwardly through the troughs 135 and 136 will convey the sandwiches in said troughs to stackers 143 and 144 adjacent the end thereof.
The sandwiches have been conveyed as flat objects by four different series of troughs, and delivered to stackers 141, 142, 143 and 144 for vertical alignment, therefore means for operating the stackers and the stacking transfer paddles of the transfer unit 140 clearly shown by Figs. 6 and 7 will now be described.
The transfer unit 140 is assembled adjacent the end portion of the main conveyor unit 21 and is composed of four stack accumulating units 174, 175, 176 and 177 arranged at right angles to the upper and lower conveyor troughs thereof. Each accumulating unit has a stack dividing unit assembled adjacent thereto, referred to by numerals 178, 179, 180 and 181. The transfer unit 140 embodies vertical walls 182 and 183 forming a continuation of said side walls 37. Three vertical walls 184, 185, and 186, are transversely assembled upon suitable frame work between said walls 182 and 183 for supporting suitable shafts and mechanism for the stacking and the dividing of the stacks of sandwiches. The shaft 172 supporting stackers 141 and 142, and the shaft 188 supporting stackers 143 and 144 are rotated by suitable chains associated with the sprocket 190 rigidly mounted upon shaft 72, as shown by Figures 4 and 7. A sprocket 191 is rigidly secured upon shaft 172 intermediate said stackers 141 and 142, and a sprocket 192 is rigidly secured upon shaft 188 intermediate the stackers 143 and 144. A chain 198 is provided .to. travel over and around sprockets 190 onshaft 72, sprocket 191 on shaft .172 and sprocket192 on shaft 188 and backto sprocket 190 spears;
for driving shafts 172 and 188. A suitable chain tightening sprocket 173 is pivotally mounted between said sprockets 190 and 191, as shown by Figure 7. The stackers transfer the flat sandwiches from the troughs to horizontal accumulating surfaces 189 where they are arranged vertically thereon as shown by Figure 8. Each of the stackers consist of two or more disks 193, slightly spaced apart upon a shaft 172, said shaft supported in a plane at right angles to the plane of travel of the sandwiches on the flight chains. A pair of said disks 193 revolve in a vertical plane in longitudinal alignment with each of the sandwich troughs. Each pair of disks 193 are provided with slots 194 having parallel side walls 195, a closed end 196 and an open entrance portion at the peripheral edge of the disk, said slots are suitably arranged to receive a horizontally arranged sandwich at one side from a trough and thereafter, by turning the sandwich and disk 180, the sandwich will be positioned upon the stack accumulating surface 189 in a vertical position ready for stacking. A flight chain 214 with angle members 215 projecting therefrom is associated with each stacker and said members 215 travel ahead of the leading sandwich of each stack.
It is necessary to carrythe standwiches away at a fixed speed and is also necessary to provide means to prevent the sandwiches from again dropping rearwardly to EhOIiZOIlffll position once they are arranged for stacking ingroups. An oscillating, or rocking, arm with stack straightening bridges is provided as will now be described. A shaft 200 is transversely arranged in the lower rear end portion of the main conveyor unit 21, the left end of said shaft extending outside the wall 3 7 as shown by Figure 5. Shaft 200 receives its power from shaft 78 by gears and chains later to be described. A change gear 201 is'mountably secured to the end of said shaft 200. A stub shaft 202 is arranged parallel with and directly above said shaft 200 and with a spur gear 203 on the outer end thereof. An idler gear 204 is arranged between said gears 201 and 203 for rotating said shaft 282, in the same direction as shaft 280. A sprocket 205 is secured to said shaft 202. A shaft 206 for supporting accumulating chain sprockets 287' and 288 adjacent said stackers 143 and 144 is supported in suitable bearings mounted between the walls 182 and 183 of the accumulating unit as shown by Figures 6 and 7. A similar shaft 209 is mounted and secured between the walls and parallel with said shaft 206, said shaft having accumulating chain sprockets 210 and 211 mounted thereon. An endless accumulating chain 214 with outwardly projecting angle portions 215 secured thereto is trained around said sprockets 207 and 210. An endless accumulating chain 216 similar to chain 214 is trained around sprockets 208 and 211. A chain sprocket 217 is secured to the end of said shaft 206 whereby chain 220 is arranged to extend from sprocket 205 and cause said shaft 206 to rotate, thereby driving accumulating chains 214 and 216. Two shafts 218 and 219 are arranged in' suitable bearings at the rear end adjacent said stackers. 141 and 142. Accumulating sprockets 224 are arranged upon said shafts 218 and 219 over which accumulating chains 222 are trained. Shaft 219 has a chain sprocket 223 mounted on the end thereof and aligned with sprockets 205 and 217 whereby saidchain 220 will drive it and thereby drive both of said shafts 219 and 206. A pair of sprockets 224 are also mounted on said shafts 218 and 219 at the rear of said stacker 141, said sprockets having accumulating chain 221 traveling over and around said sprockets to assist in stacking sandwiches as is done by the accumulating chain 222. Therefore the stacking of sandwiches in a vertical manner can be done in a desirable manner and at a speed arranged by suitable gears such as gears 201, 203 and, 204 arranged and trained together.
The stacking of sandwiches on the accumulating chains 214, 216, 221 and 222 and retaining same at the far end of the stack by the lug or projection 215 thereof cycle.
8 also requires the embodiment and use of a stack straight;- ening bridge 225 located above and at the rear of each stacker. Directly above each stacker is suitably mounted a bridge member 225, said bridge members above the stackers 141, 142 being mounted upon the end of rotatable shafts 226 extending transversely of the machine and above the lower inner troughs, said shaft 226 being supported by hearings in suitable bearing support upon the vertical wall 184. The bridge members above the stackers 143 and 144 associate and in alignment with the lower troughs and 136 are mounted upon the ends of a short shaft 227 supported by bearings and bearing brackets mounted upon the vertical wall 185. The bridge members 225 consist of shaft clamping means 225' with a-fork-like member 228 depending downwardly therefrom. As a sandwich? is deposited by a stacker upon the support 189, the forward sandwich engages the lug '215 upon the accumulating chain. After a suitable number ofsandwiches are deposited by the stacker, the forklike member 228 is moved into contact with the back side of the last sandwich in the stack to keep it in a vertical position'and move the entire stack of sandwiches forwardly. The fork 228 cooperates with the accumulating chains to move the stack therealong. To give the fork the necessary oscillating movement, the shafts 226 and 227 must be rotated in a clockwise direction and then reversed and moved in a counterclockwise direction by suitable means now to be described. The shaft 200 described above, as shown by' Figure 5, has assembled therewith a pair of cams 229 and 230. Two shafts 237 and 238, shown by Figure 4, are mounted in suitablebearings in the side wall 37, each shaft having an arm extending outwardly and under said cams 229 and 230. A sprocket 231' is rigidly mounted and secured near the end of said shaft 200 and a sprocket 232 is rigidly mounted upon a power driven shaft 233 elevated'and secured in bearings upon the side wall 37. Two idler gears 234 and 235 are suitably arranged whereby a chain 236 can travel over and around sprockets 231, 232, 234 and 235 for driving sprocket 231 on driving. shaft 200. The intermediate section of each arm 239 and 240 is provided with a rollersuitable to ride upon the peripheral face of the cam associated therewith. The outer end of said arm- 239 has a chain 241 attached thereto. The outer end of said arm 240 has a chain 242 attached therewith. Said chain 241 extends upwardly and over a sprocket mounted intermediate the forks 228 upon said shaft 226 adjacent stackers 141 and 142, said chain having its opposite end attached to a coil spring 243 which has its opposite ends secured to a rigid support. Said shaft 200, with cams 229 and 230 thereon, makes one revolution during each cycle of the machine. The fork like members 228 will be moved forward and back once for each A cycle in time is equal to double the time it takes to place a group of sandwiches, such as 16, upon or in a trough, since a group of sandwiches must be arranged in the upper trough as well as in the lower trough during one cycle. Chain 242 extends upwardly and over a sprocket mounted intermediate the forks 228 mounted upon the ends of the short shaft 227 above the adjacent stackers 143 and 144 associated with the lower central troughs, said chain having its opposite end attached to a coil spring 244 which has its opposite end secured to a rigid support.
The removal of stacks of sandwiches must be in timed relation with respect to all moving parts of the machine. Above it was described how power was delivered to shaft 200. The drive shaft for the stack transfer paddles must be in timed relation with other devices driven by said shaft 200, therefore the paddles are driven by means connected with shaft 233, which is driven indirectly by shaft 78. A drive gear 250 is mounted upon shaft 78 which drives an idler gear 251 secured in a bearing mounted in one end of a pivoted arm which has its opposite end mounted with means pivoted on said shaft 78.