US2350576A

US2350576A - Machine for packaging gum

Info

Publication number: US2350576A
Application number: US386420A
Authority: US
Inventors: John Van Buren
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-04-02
Filing date: 1941-04-02
Publication date: 1944-06-06
Anticipated expiration: 1961-06-06

Description

June 6, 1944. J. VAN BUREN MACHINE FOR PACKAGING GUM Filed April 2, 1941 ll Sheets-Sheet 1 INVENTOR John UwnBwren BY ATTORNEYS J1me 1944- J. VAN BUREN MACHINE FOR PACKAGING GUM ll Sheets-Sheet 2 Filed April 2 1941 Nu mm un l N V E NTO R John WwzzBuren BY Aroma? June 6, 1944. J. VAN BUREN 2,350,576

MACHINE Fon PACKAGING GUM Filed April 2, -1941 11 Shets-Sheet s VENTOR mm John a/nliwz'en m BY Arraeuavs June 6, 1944. J. VAN BUREN MACHINE FOR PACKAGING GUM Filed April 2, 1941 11 Sheets-Sheet 4 l N V E N TOR John UmBwren BY Frag: -r

June 6, 1944. J VAN BUREN 2,350,576

MACHINE FOR PACKAGING GUM Filed April 2, 19 41 11 Sheets-Sheet 5 VENTOR BY ATTORNEYS June 6, 1944. J. VAN BUREN 2,350,576

MACHINE FOR PACKAGING GUM Filed April 2, 1941 ll Sheets-Sheet 6 INVENTOR June 6, 1944. J. VAN BUREN MACHINE FOR PACKAGING GUM Filed April 2, 1941 11 Sheets-Sheet 7 0 0 00000000000Q0O0O0 H m a Em.

I I lll HU I HV H HH l h. ooooooooo ooo INVENTOR Jvhn UanBwfem BY AORN"? June 1944- J. VAN BUREN 2,350,576

MACHINE FOR PACKAGING GUM Filed April 2, 1941 ll Sheets-Sheet 8 IQZQCE'M? OQQQQQQQB 1 257 26 1 9 Z59 INVENTOR hnUanBumerz June 6, 1944. J. VAN BUREN MACHINE FOR PACKAGING GUM Filed April 2, 1941 ll Sheets-Sheet 9 A i, V//

I NVENTOR JohnUmBurew INVENTOR John Um Bil/rm L O Iv w 11 Sheets-Sheet 10 Filed April 2, 1941 J VAN BUREN MACHINE FOR PACKAGING GUM Jun; 6, 1944.

11 Sheets-Sheet ll INVENTOR Uanliwren/ BY ATTORNEYSI 32 Ema m ne ZOZ J. VAN BUREN MACHINE FOR PACKAGING GUM Filed April 2, 1941 w m .2 M i m [m m w W mm m M? m 1 MW ;L. r Y v 0 u w June 6, 1944.

Patented June 6, 1944 UNITED STATES PATENT OFFICE MACHINE FOR- PACKAGJNG GUM John Van Bnren, Brooklyn, N. Y.

Application April 2, 1941, Serial No. 386,420

6 Claims.

positioned thereon.

Further objects of the invention will appear from the following specification taken in connection with the drawings which form a part of this application, and in which Fig. 1 is a top plan view of the machine constructed in accordance with the invention;

Fig. 2 is a front elevation of the machine shown in Fig. 1;

. a Fig. 2A is a detail sectional elevation of the feed bar mechanism;

Fig. 3 is a detail sectional elevation taken substantially on line 3-3 of Fig. 4 showing differential gearing used in connection with the adjustment of the paper feed rolls;

Fig. 4 is a sectional elevation taken at right angles to Fig. 3;

Fig. 5 is an end elevation of the left hand end of the machine shown in Fig. 1;

Fig.6 is a top plan view on an enlarged scale of the wrapper used for wrapping the gum;

Fig. 7 is a rear elevation of the machine shown in Fig. 1;

Fig. 8 is an end elevation of the machine shown in Fig, 1 looking at the right hand end of the machine;

Fig. 9 is a plan view on an enlarged scale and partly in section showing the central portion of the machine, including the feed pocket, plunger for feeding the sticks into the pocket and the correlated parts;

Fig. 10 is a. vertical sectional elevation taken substantially on line Ill-Ill of Fig. 9;

Fig. 11 is a vertical sectional elevation on an enlarged scale taken through the paper feeding mechanism, package receiving pocket and correlated parts;

Fig. 12 is a sectional elevation of the discharge end of the second feed carrier which carries the gum through the end folding mechanism to the stacker;

Figs. 13 and 14 are sectional elevations taken substantially on lines 13-" and l|ll of Fig. 12;

Fig. 13A is a sectional elevation taken substantially on line I3A-I3A o1 F18. l3;

Fig. 15 is a sectional elevation of the control for the electric eye taken substantially on line l5-i5 of Fig. 16;

Fig. 16 is a sectional elevation of the structure shown in Fig. 15 taken at right angles thereto;

Fig. 17 is an enlarged plan view illustrating the correction mechanism for coacting with the electric eye to correct the feed of the paper;

Fig. 18 is a view taken at right angles to Fig. 1'7;

Fig. 19 is a sectional elevation taken substantially on line dB-l9 of Fig. 18;

Figs. 20 and 21 are sectional elevations illustrating two positions of the solenoid controlled member and the parts coacting therewith to turn the feed roll through an increment of movement to correct the feeding operation, these parts being shown in Fig, 20 in coa'cting position and in 24-24 of Fig. 9, this view being shown on an enlarged scale;

Fig. 25 is a diagrammatic view illustrating the circuit for the photo-electric cell; and

Fig. 26 is a perspective view of the completed package. I

The invention briefly described consists of a simple and practical machine including means for feeding a plurality of superposed pairs of sticks of gum from a hopper to a wrapper, the wrapper being positioned in the path of movement of the plurality of pairs of superposed sticks, means for folding the wrapper around the gum and securing the ends together and means operative thereafter to feed the wrapped gum through the folding mechanism, constructed and arranged to fold the projecting ends of the wrapper against the sides of the superposed sticks. After the wrapper has been closed the packages are discharged into a stacker and are successively stacked therein. 1

In carrying out the invention the sets of superposed sticks and wrapper are fed first into a pocket which causes the wrapper to be folded across the top, rear end and bottom of the sets of pairs and the pocket is then moved to another position in which the projecting ends of the wrapper are closed around the advance end of the package and from which position the package is discharged into the folding mechanism by means of which the ends of the wrapper are folded.

Further details of the invention will appear from the following description.

Gum stick feed mechanism mounted on a fixed pivot and pivoted at 36 to a link 31. Link 31 is connected at its opposite end to a pin 30 carried by an eccentric 39 mounted on a shaft 40. Shaft 40 has secured thereto a gear 4| which meshes with a gear 42 mounted on the main drive shaft 43. Shaft 43 is driven from any suitable source of power through clutch mechanism indicated at 45.

As the plunger 30 is reciprocated each forward movement thereof will discharge the two lower sticks from the stack in the hopper H onto a table 46 and between

guide members

41 and 48 which form a channel for receiving the sticks.

The sticks are fed along the table or support 40 by means of apair of feed bars 50 and 5| having upwardly extending feed fingers 52. table 40 is longitudinally slotted to permit the fingers to project upwardly and engage behind the set of sticks as they are fed into position for engagement by the-fingers by the reciprocating plunger 30.

The bars 50 and SI are carried by vertically extending bars 53 and 54 which are connected by a crow member 55. The member 55 is connected to a vertical post or bar 55 which is vertically reclprocatable in a block 51 which in turn is slidably mounted on a horizontal bar 58 (Fig. 2A). The vertical post 56 has secured to its lower end a roller 53 which is mounted in a horizontal guidcway 6| vertically reciprocatable on a post M. The guideway is reciprocated by means of a link 02 which is connected at 63 to an arm 64 mounted on'a pivot 65. This arm 64 has connected thereto an arm 06 so that the

arms

64 and 66 form abell crank lever about the axis of the pivot 65. The upper end of the arm 66 is connected at I to a pitman 68. One end of the pitman 00 is connected at B9 to a roller I0 which is ppdtioned in the groove of a cam II on a shaft 32.

Aneccentrlc 08' at the forward end of the shaft 32 has the link 12 connected to a 1ever '|3 mounted on a fixed pivot, I4 and having pivoted to its upper end a link 15 which is pivoted at I6 to the reciprocatable block 51.

Thus. by the cam operation of the links 68 and eccentric 69' the bars 50 and SI will be raised and lowered and also moved longitudinally to successively feed the pairs of sticks of gum forwardly through the

channels

41 and 48. It will be understood without further description that the plunger 30 is so timed as to position five pairs of sticks on the table 46 between the

channels

41 and 48 and in the path of movement of the right hand fingers 52 (viewing Fig. 2). These fingers first engage the grouped pairs of sticks and feed them forwardly and are thereafter retracted. 0n the next movement of the bars the sticks are en- The' asmsvc viewing Fig. 2 and are in this manner intermittently fed through the channels.

After the mechanism just described has fed a plurality of pairs of sticks forwardly, and in the embodiment of the invention shown, five pairs are fed, to the forward end of the table 46 these five pairs of sticks are fed at right angles to their first path of movement into a pocket P by means of a reciprocatable plunger or plunger plate 80. In this connection attention is directed particularly to Figs. 1, 5, 9, l0 and 11. The plate 90 is carried by a bracket 8| to which is connected a link 92 which is connected to a lever 83 (Figs.'5 and 10). Lever 83 is mounted on a fixed pivot 8d and is operated by a pitman 85 having on its rear end a yoke 86 which straddles a shaft M (Fig. 9). The yoke 88 carries a roller 08 which is positioned in a cam groove in a cam 89 mounted on the shaft 81.

The shaft 8! has secured thereto a bevel gear 90 which meshes with a bevel gear 9| carried by the shaft 40'. Shaft 40' is driven from shaft 43 by spur gears shown in Fig. 7.

The cam if and eccentric 68' which control the operation of the feed bars 50 and 5| is mounted on a shaft 92 which is connected by a bevel gear connections 93, 94 with the shaft 81.

The shafts are so timed and the cams are so designed that the feed plate or plunger 80 will be operated to feed five sets of superposed pairs of sticks of gum from the table 46 into the pocket P after these five sets have been assembled in position for engagement by the plate or plunger 80.

Paper feed Before describing the folding operation in the pocket P or the movements of this pocket from receiving to discharge position the paper feeding mechanism for feeding the paper strip or wrapper into the path of movement of the five pairs of sticks as these sticks are pushed into the pocket by the plunger 80. will be described. In this connection attention is directed particularly to Figs. 1, 5, 7, 8 and 11. The paper strip is carried by a supply roll S mounted on a roll. From the bracket 95 the strip is led beneath an idler roll 96 and through an electric eye regulat ing device shown at 91, 98 to the paper feeding mechanism. The electric eye mechanism which will be described later, is provided for the purpose of regulating the feed of the strip in order to correctly cut the wrapper so that the printing will be properly positioned on the wrapper. The wrapper which is shown in plan view in Fig. 6 is provided with printed matter shown at 99 and it is essential for the proper appearance of the wrapper on the package thatvjahis printed matter be correctly positioned.

The strip I 00 from the supply roll S first passes between a pair of rolls I01 and I02, the roll |0I having a pair of knife blades I03 which slit the wrapper as shown at I04 in Fig. 6. After the strip passes around the roll I02 it is led between a pair of feed rolls I05, I00 and downwardly between guide members I01 and between a stationary knife blade I08 and a rotary knife blade I09, the latter blade being carried by a knife roll H0. The cutting mechanism just described is carried by a bracket III which carries a gear 2 which meshes with a rack Informed on the vertical post II4. By rotating the gear II2 manually the cutting mechanism and bracket Ill can be vertically adjusted.

From the cutting mechanism the severed strip gazed by the second set of fingers from the left 75 passes downwardly between a pair of feed rolls machine to be engaged by the five sets of sticks of gum as these sticks are fed by the plate 00. Q

The feed rolls H6 and H6 are carried by a bracket III! which has mounted thereon a gear H9 which engages-teeth I in the vertical post 4. Thus, these feed rolls are vertically adjusted with the post and also relative to the post.

The driving connections for the paper feeding mechanism will now be described. The left hand end of the shaft 81, viewing Fig. 1, has connected thereto a bevel gear I which meshes with a bevel gear I26 carried by a shaft I21. This shaft has secured thereto a bevel gear I 28 which meshes with a bevel gear I29 secured to a vertical shaft I30. (See Figs. 1, 2 and 5.)

Shaft I30 has secured thereto a. gear I3I which meshes with a gear I32 on a parallel shaft I33. Shaft I33 has also secured thereto a gear I34 which meshes with a gear I35 carried by a sleeve I36 rotatably mounted on the shaft I30. Sleeve I36 has also secured thereto a gear I31 which meshes with a gear I36 which is mounted on a shaft I39 which carries the feed roll H5.

The shaft I30 has also secured thereto a bevel gear I40 which meshes with a bevel gear I4I carried by a shaft I42 which also has secured thereto the roll IIO which carries the rotary knife I09.

Shaft I42 has also mounted thereon a gear I43 which meshes with an idler gear I44 which in turn drives a gear I45 mounted on shaft I46.

This shaft carries a spider I41 having planet gears I48 which mesh with a pinion gear I49 fixed to a shaft I50 on which feed roll I05 is mounted. Planet gears I40 also mesh with a ring gear I5I carried by a ring gear housing I5IA on which is fixed a worm wheel I52, (see'Figs. 3 and 4).

A worm I53 meshes with the worm wheel I52, the worm being carried by a shaft I54 (Figs. 17, 18 and 19). Shaft I54 has secured thereto a ratchet wheel I55 which is engaged by a pawl I56 carried by an arm I51 pivotally mounted on the shaft I54. A holding pawl I56 mounted on a fixed arm I51 also engages the ratchet wheel. The arm I51 has secured thereto and extending therefrom on the opposite side of the axis of the shaft I54 a bracket I58 to which is pivoted a bell crank lever comprising arms I59 and I60. The arm I59 is positioned in the path of movement of an adjustable screw I6I carried by an arm I62 fixed to a reciprocatable or slidable rod I63. The arm I59 is held in engagement with the screw I6I by means of a spring I64 which engages the arm I60.

One end of the rod I63 is pivotally connected at I10 to an armature arm I1I mounted on a pivot I12 and controllable by a solenoid I13. As the solenoid isenergized in the manner hereinafter described the armature "I will be moved to the left or in an anticlockwise direction about its pivot I12, thus causing the rod I63 to move to the left and in turn causing the screw I 6I to move bell crank lever I59, I about its pivot in a clockwise direction fromthe dotted line position shown in Fig. 17 to the full line position shown therein.

The arm I60 has secured to its end a pla I15 having a knife edge I16 at its upper end. When the solenoid is energized and the bell crank lever I59, I60 is moved in a clockwise direction to the III position shown in full lines in Figs. 11 and 20. the plate I15 and the knife edge I16 will be positioned. in the path of movement of the lower end of a notched screw I60 carried by an arm I6I' mounted on a pivot I82. The arm IOI is connected to a sleeve I83 to whichjs also con- I nected a downwardly extending arm I04 having a roller I85 which engages a cam I06 carried by a shaft I81. Shaft I01 has secured thereto a gear I88 which meshes with a gear I45 carried by the shaft I46.

Rdiler I85 is held in engagement with the cam I86 by means of the spring I which engages the arm I84. The I151 is held in its position of rest by means of aspring I96.

The arm IBI and screw I80 carried thereby are vertically oscillated by the cam I06, but unless the solenoid I13 is energized to cause the rod I63 to move the pin I6I' and thus swing the bell crank lever I59 and I60 to a position in which the knife edge I16 on the plate I15 will be positioned in the path of movement of the notched lower end of the screw I80, the operation of the arm I0-I will, be ineifective. However, when these two parts are disposed in alinement, as shown in Fig. 20 the downward movement of the arm I8 I will. cause the arm I51 to move in a clockwise direction and the pawl I56 will engage the ratchet. wheel I55 and cause this wheel to rotate the shaft I54, thus turning the worm I53, the worm wheel I52. As the worm wheel is rotated the ring gear I5I will also be rotated and through the planet gears which engage the pinion I49: shaft [46 and the spider I41 will be rotated through an increment of movement. The spider I41 is carried by a shaft I46 and the feed roll I05 is mounted on shaft I50.

The photoelectric cell circuit for controlling the energizing of the solenoid [13 will be later described.

The sticks of disposed at the end of the table 46 are fed into the pocket P (Fig. 11) over the top of a block 200 by by means of the feed plate or plunger 80. In moving into the pocket they engage the wrapper which is disposed in the path of movement thereof and the wrapper is forced into the pocket and around the advance end, top and bottom of the articles to be wrapped. The two ends of the wrapper project beyond the open end of the pocket, as shown in Fig. 23.

A bracket 20f is mounted above the pocket P on the vertical post 202 on which the bracket 203 carrying the pocket is also mounted. These two brackets are vertically reciprocatable or movable in a manner which will now be described.

The bracket ZIlI has mounted on the outer end thereof a, roller 204 whichis carried by a spindle 205. The roller receives adhesive or moistening material for the wrapper from a. wick 206 which is adapted to engage the roller. A plate 201 is also carried by the bracket adjacent the roller.

Shaft 205 is driven from shaft I39 through gears 2I6, 2I9 drive shaft 209 which in turn is connected through a universal joint 209A to the shaft 205,

The shaft IN on which the knife blades I53 are carried is driven from the shaft I46. An idler gear I02 meshes with gear I45 on sh ft I46 and drives the gear 03 mounted on the knife blade shaft IIII' (Fig. 5).

When the ends of the wrapper project from the pocket P the bracket 201 is lowered, causing theliquidtoengagetheoutersurfaceof the upper flap or end and to render this surface adhesive. The downward movement of the plate also folds this upper projecting end downwardly.

After this operation is completed the pocket P moves downwardly in a manner hereinafter described, causing the lower projectingend to be folded upwardly against the folded upper end, the lower projecting end being folded by engagement with an edge 288 formed on the block 299. This block encloses electric heating coils which engage the outer surface of the folded ends of the wrapper, drying and sealing the ends of the wrapper.

The bracket 28! is vertically moved in the mannerjustdescribed byrneans ofalink2lll which is connected to a bell crank lever 2, 212, the arm 2|2 of the bell crank lever being pivoted at 2" to a link 2 (Fig. 11). The lower end of the link 2 is bifurcated or has connected thereto a bifurcated yoke 2!! which straddles the shaft 81 and carries a roller 2l6 which is actuated by a cam 2" fixed to the shaft 81 (Fig. 9).

The pocket bracket 293 has connected thereto a link 228 which is pivoted to an arm 22i secured to a shaft 222. The shaft 222 has secured thereto an arm 223 to which is pivoted at 224 a pitman 225 which has a roller 226 operated by a cam 221 mounted on the shaft 92.

The cam 221' is so designed that when the load has been pushed with the wrapper into the pocket P and the upper projecting end has been moistened and lowered or folded, the pocket is moved downwardly causing the lower projecting end to fold over the other down-turned end moving the overlapping ends over the heater and thus sealing the folded ends of the wrapper. The pocket moves downwardly to a position opposite a receiving platform230 which receives the package from the pocket in the following manner:

The feeding means for ejecting the package from the pocket is particularly illustrated in Figs.

' 1, 9, 10 and 11. From Fig. 9 it will be seen that a plate 23l is disposed in the pocket P at the back end thereof, this plate being carried by a pair of posts or pins 232, 232. The rear ends of the pins '232 are provided with heads 233. These heads are disposed between

plates

234, 235 carried by a bracket 236, the plates being inclined toward each other, as shown in Fig. 10. The pins 232 extend through vertical slots in the plate 234.

after the pocket P has been lowered in the manner hereinbefore described, the bracket 236 is moved to the left in the following manner: The bracket has connected to the upper end thereof a rearwardly extending arm 231 which is pivoted at 238 and 239 to parallellinks248 and 2. These links are mounted on fixed pivots 242 and '243 at the lower ends thereof. The link 248 is pivotally connected at 244 to a yoke 245 which straddles shaft 81 and has a roller 246 which engages a cam 241 mounted on the shaft 91 and designed to reciprocate the bracket 236 and pins 232 actuated thereby at th proper sequence in the operation of the machine to eject the wrapped articles from the pocket P onto the table 238. The table 230 is provided at the side edges thereof with plates 258 having fold grooves 25l of the usual construction designed to fold the projecting side edges of the wrapper inwardly and to seal these projecting edges, suitable drying plates being provided to dry the sealed ends.

In order to render the projecting ends adhesive there are provided at the sides of the supporting plate or table 239 moistening wicks 255 which are carried by brackets 256 to which is connected a tank 251 for holding the moistening liquid. The wicks extend downwardly into the tank, as shown in Fig. 24. The tank 251 has extending downwardly therefrom lugs 258 carrying a pin 259 which is positioned in a forked arm 260 carried by the spindle 84. As the arm 83 oscillates the spindle 84 the tank 251 and the brackets 256 and wicks 255 will be raised and lowered so that the moistenlng liquid or adhesive will be applied to the inner surfaces of the lower side flaps 26l, 26l at the desired period in the sequence of operation of the machine, as shown in Fig. 24.

It will-be noted that the adhesive is applied when the flaps 26! have been partially folded and it will be understood that the folding slots in the side plates 258 will fold the upper flaps downwardly and then will fold the lower flaps upwardly in the usual manner. From the folding slots the packages pass between heating plates which complete the sealing operation.

Feed discharger, conveyor and stacking mechanism The packages discharged from the pocket P to the support or table 239 are fed along this table and through the folding mechanism which completes the folding operation by means of a plurality of feed bars Or members 265 which are carried by an endless conveyor or chain 266 which extends around a sprocket wheel 261, a guide wheel 268 and a guide member 269. (See Figs. 10 and 11.)

The sprocket wheel I61 is driven intermittently in the following manner: The sprocket wheel 261 is rotatably mounted on a shaft 210 on which is fixed a gear 2" which is engaged by teeth 212 formed in a rack bar 213. The rack bar is held in engagement with the gear 21! by means of a roller 214 mounted on a fixed bracket 215. The rack bar 213 extends rearwardly and has secured to its rear end an eccentric strap 216 which is mounted on an eccentric 211 carried by the shaft the rack bar 213 will be reciprocated. The shaft 218 has secured thereto an arm or bracket 218 on which is moimted a pawl 219 which engages a ratchet wheel 280 to which is fixed the sprocket wheel 261 (Fig. 13A). The pawl 219 under the operation of the shaft 210 will cause this ratchet wheel to be rotated as the rack bar 21: moves to the left viewing Fig. 10, thus causing the sprocket wheel to operate the feed chain 266 through one direction of its movement.

The wrapped packages are fed through the folding mechanism by the feeding members 285 by the movements of the feed chain and after the folding operations have been completed the packages are fed beneath a plate 288 which is positioned above the curved discharge end 28! of the table 239. (See Figs. 5, 8, 10 and 12.) From the end 28l the packages are discharged into stacking mechanism which is constructed and operated in the following manner: A reciprocatable plate 282 (see Fig. 5) is carried by a bracket 283 to which are pivoted

parallel links

284 and 285.

As the shaft 81 and eccentric 211 are rotated I wheel 204 which is engaged by a pawl 205 carried by a bracket 290 having a hub 29! fixed to the shaft 210. This pawl and ratchet mechanism operates in a manner similar to the pain and ratchet drive for the sprocket wheel 261, but the pawl and ratchet drive for the sprocket wheel 26! operates 282 will be disposed in its lower position, as shown in Fig. 5, when a package is discharged between .the plate 280 and the curved end 28I of th support or table 230. Thereupon the pawl and ratchet drive for the stacking mechanism will move the plate 202 upwardly forcing the package upwardly between a pair of pivoted hook-shaped members 300 and 3M (see Fig. 14) These members have converging faces 302 on the outer surfaces of the hooks and as the packages move upwardly the members 300 and 3M are spread or move away from each other to permit the packages to pass between the members 300 and 30 I, as clearly shown in Fig. 14. The members 300 and 30I have

arms

303 and 304 at their upper ends, these arms being connected to the members through spindles 305. The

arms

303 and 304 ar engaged by a spring 306 which pulls the arms upwardly and holds the lower ends of the members 30I and 300 inwardly, as shown in Fig. 14.

As hereinbefore stated, the feed mechanism for the paper is regulated by photoelectric control mechanism designated on Fig. 5 as 91, 98. Fig. 25 illustrates diagrammatically and simply a circuit for the photoelectric mechanism. The P oto tube 91, as shown in Fig. 25, is connected by wires 3I0 and 3 to wires 3I2 and 3I3 which in turn are connected to wires 3I4 and 3I5. The wires 3 I4 and 3I5 are connected to terminals or contact members 3I6 and 3". The circuit through the members 3I6 and 3I'I is controlled by a plate 3I8 which is mounted to rotate with the shaft I21. This shaft has rings 320 and 32I (Figs. 15 and 16) on which the contact members 3I0 and 3II rest during the major operation of the revolution of the shaft, but the rings 320 and 32I are not electrically connected together. Thus, the circuit is completed through the members 3 I and 3| 1 only when these members are in engagement with the plate 3I8. The circuit from the plate 3I8 is conducted through

wires

322 and 323 to the solenoid I13. As hereinbefore explained, when the solenoid circuit is closed the solenoid is energized and actuates the feed correction mechanism. The extent of rotation of the feed rollerby this correction mechanism is determined by adjustment of the screws ISI and I8I and also it should be noted that the worm I53 can be rotated by a handle 325 mounted on the end of the spindle I54.

The shaft I21 and the contact plate 3I8 carried thereby are so operated that the circuit through the photoelectric cell will be closed only when a shaded portion 320 of the wrapper 99 is disposed in the range of the cell. When the beam of the cell strikes the shaded portion 320 the position of the feed roll I05 will be corrected if the wrapper strip is being incorrectly fed.

In Fig. 25 there is illustrated a suitable control box B for the photoelectric cell mechanism, the main line for supplying power r th s h nism being designated at 330 and 33 I.

Summary of operation The operation of the machine may be briefly summarized as follows: The sticks of gum are ejected or fed from the hopper H in pairs by the reciprocating plunger 30 to the supporting table 45. When five pairs have been fed by the plunger bars 50 and 5| and fingers 52 carried thereby are operated to feed this group of ten sticks or five pairs intermittently along the table 40 to successive positions until the group is fed to the end of the table in a position to be engaged by the feeding plate 00 which feeds the group or set of ten sticks into the pocket P. The wrapper is disposed in the path of movement of the group oi. ten sticks and is fed into the pocket with the load and is thereupon positioned around the end, top and bottom of the articles, the ends of the Wrapper projecting beyond the outer end of the pocket, as shown in Fig. 23. The moistening roll 204 then descends and moistens the outer surface of the upper projecting end and folds it downwardly, whereupon the pocket and load carried thereby is lowered from the position shown in Figs. 11 and 23 to a position opposite the receiving end of the table 230.

The paper from the supply roll S is fed past the photoelectric cell mechanism, is slit-by the blades I03 and fed downwardly between rolls I05 and I06 to the cutting mechanism I08, I09 which severs the strip to the proper length. From this mechanism the wrapper is fed downwardly by the feed rolls H5 and H6 to a position in the path of movement of the load as the load is fed by the feeding plate into the pocket.

The electric eye operates in the manner hereinbefore described to rotate the ring gear I5I and through the planetary gearing to rotate the feed roll I05 in the proper direction to correct the position of the wrapper strip and properly feed the strip to the wrapping mechanism.

After the pocket P has been depressed to a position opposite table 230 the load is ejected from the pocket by the actuation of the pins 232 and the package is fed through the final wrapping mechanism by the feeding members 205 carried by the chain 260. During this movement the laterally projecting ends 26I, 20I are moistened or rendered adhesive and folded downwardly and the lower projecting edges are folded upwardly to close the package.

The completed package is discharged by the feeding members 205 to stacking mechanism, each package being received by the plate 282 and fed upwardly by this plate to a position between the hook-shaped retaining members 300, 30 I'.

-Although one specific embodiment of the invention has been particularly shown and described it will be understood that the invention is capable of modification and that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, as expressed in the following claims.

What I claim is:

1. In a wrapping machine, a pocket, means for moving a plurality of articles and a wrapper into said pocket with the ends of the wrapper projecting from the pocket, a vertically reciprocating roller adjacent the pocket arranged to apply liquid to one of the projecting ends of the wrapper and to fold said end of the wrapper, means for moving the pocket and means engageable with the other projecting end of the wrapper as the pocket is moved, for folding said other end against said first mentioned folded end.

2. In a wrapping machine, a pocket, means for moving a plurality of articles and a wrapper into said pocket with the ends of the wrapper projecting from the pocket, a vertically reciprocating roller adjacent the pocket arranged to apply liquid to one of the projecting ends of the wrapper and to fold said end of the wrapper, means for moving the pocket and means engageable with the other projecting end of the wrapper as the pocket is moved, for folding, heating and pressing said other end against said first mentioned folded end. i

am a wrapping machine, a pocket, means for moving a plurality of articles and a wrapper into said pocket with the ends of the wrapper projecting from the pocket one above the other. a vertically reciprocating roller adjacent the pocket arranged to apply liquid to the upper projecting end of the wrapper and to fold said ,upper end of the wrapper downwardly, means for moving the pocket and means engageable with the lower projecting end of the wrapper as the pocket is moved, for folding said lower end' upwardly against said upper folded end.

4. In a wrappin machine, a pocket,'means for moving a plurality of articles and a wrapper into said pocket with the ends of the wrapper projecting from the pocket one above the other, a vertically reciprocating roller adjacent the pocket arranged to'apply liquid to the upper projecting end of the wrapper and to fold said upper end of the wrapper downwardly, means for moving the pocket and means engageable with the lower projecting end of the wrapper as the pocket is moved, for folding, heating and pressing sa'id lower end against said upper end.

5. lnawranpingmachine,apocket,meansfor feeding articles and wrappers horizontally into said pocket, with the ends of the wrappers projecting from the pocket one above the other, a vertically reciprocating roller adjacmt the pocket arranged to apply liquid to the upper projecting ends ofthe wrappers and to fold said upper ends downwardly, means for moving the pocket downwardly and stationary means engageabie with the lower ends of the wrappers as the pocket is moved for folding said lower ends upwardly against said folded upper ends.

6. In a wrapping machine, a pocket, means for moving articles and wrappers horizontally into said pocket, with the ends of the wrappers projecting from the pocket one above the other, a vertically reciprocating roller adjacent the pocket arranged to apply liquid to the upper projecting ends of the wrappers and to fold said upper ends downwardly, means for moving the pocket downwardly to a second level. stationary means engageable with the lower ends of the wrappers during said movement of the pocket for folding said lower ends upwardly against the upper folded ends, means for discharging the articles and wrappers from the pocket at said second level, means for feeding the articles and wrappers at said second level and means for com- JOHN van amen.