US2024438A - Wrapping machine - Google Patents

Description

Dec. 1'7v,l 1935. H. L, EVANS Er AL wRAPPINo MACHINE Filed May 19, 19334 6 Sheets-Sheet l Dec. 17, 1935. H. EVANS ET A1.

K WRAPPING MACHINE 6 Sheets-Sheet 2 Filed May 19, i933 ATTORNEY Dec. 17, 1935.

H. l.. EvANs ET AL 2,0245438 WRAPPING MACHINE Filed May 19, 1953 6 Sheets-Sheet 3 |NVENTOR5- 17, 1935. H L. EVANS ETAL WRAPPING MACHINE Filed May 19, 1933 'e sheets-sheet 4 "s vez i HIIN INVENTORS ATTORNEY 17, 1935. Al-l. I .VANS E'rAl.

WRAPPING MACHINE Filed May 19. 1953 6 Sheets-Sheet 5 E i ATTORNEY Patented Dec. 1;?, 1935 UNITED STATESI PATENT OFFICE 2,024,438 WRAPPING MACHINE.

poration of New Jersey Application May 19, 1933, Serial No. 671,836

6 Claims.

This invention relates to improvements in wrapping machines; and the invention has reference, more. particularly, to improvements in automatic machines adapted to apply an external enveloping wrapper or jacket'about cartons, boxes and like symmetrical packages; the machine being further especially adapted to form andapply a wrapper or jacket of cellulosic sheet material of the kind known to industry and commerce under the trade name Cellophane,

This invention has for its principal object to provide an automatic machine adapted to apply and secure a wrapper upon cartons and the like smoothly and tightly, notwithstanding slight variations in size or inequalities in the contours of the latter; and, furthermore,to accomplish these operations with rapidity and efciency.

This invention has for more specific objects, to provide novel means for producing the various folds necessary to the formation of the wrapper in such manner that complete and ecient control of the wrapper material is maintained throughout the entire operations.

Other objects of this invention, not at'this time more particularly enumerated, will be understood from the following detailed description of the same.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which:-

Fig. 1 is a side elevation of a wrapping machine according to this invention; Fig. 2 is a plan view of the same; fFig. 3 is a plan view showing the arrangement of transmission means actuated by a power shaft operating in properly timed relation the various mechanisms making up the wrapping machine; Fig. 4 is a longitudinal vertical section of parts of the machine adapted to apply the wrappers to the articles to be enveloped thereby, the same showing the folding roll positioned to receive a carton to be wrapped together with a section of wrapper material; Fig. 5 is a similar .view showing the carton ,and wrapper material operatively entered into the folding roll; and Fig. 6 is a similar View showing. the operation of the means for effecting the side folds of the wrapper; Fig. 7 isa fragmentary plan view of means for receiving and stacking the wrapped cartons; ,and Fig. 8 is a longitudinal vertical section through said Wrapped carton receiving and stacking means. Fig.' 9 is a fragmentary view showing the means for producing the first side fold of the wrapper relative to the carton, said means being shown in normal initial position; Fig, l is a similar ,and wrapper section operatively positioned within said folding roll; .and Fig. 12 is a side elevation of the folding roll.

Figs. 13 to 18 inclusive show the successive stages in the folding operations by which a wrapper section is applied to and around a carton to be enveloped thereby.

Similar characters of reference are employed in the above described views, to indicate corresponding parts.

Referring to the drawings, the reference char- 15 acter I indicates the base of the machine, upon which are mounted the frame-work 2 in connection with which the wrapping mechanism is supported. At one end of the frame-work is a vertical magazine 3 in which are piled or stacked 20 cartons C to be wrapped. Beneath the lower discharge endof said magazine 3 lis a platform 4 upon which the stack of cartons rests, so that the lowermost carton initially lies in the path of a reciprocable plunger 5, the timed reciprocations of which successively feed the cartons to the wrapping mechanism. The plunger 5 is .actuated from the main power shaft 6 of the machine by an eccentric 1, the connecting rod 'I' of which is connected with the actuating lever, 8 of a rock- 30 shaft 9, and said rock-shaft 9 oscillates lever arms I0 which are connected by links II to the plunger 5, whereby the latter is reciprocated in its guides I2.

Located adjacent to the forward end of said platform 4 is a rotatable folding roll I5, the structure and functioning of which will be presently set forth. Said folding roll is provided with journal portions I3 mounted in bearings I4 which are supported by the frame-work 2. Said fold- 40 ing roll is actuated in timed relation to the carton delivery plunger 5 and from the power shaft 6 through a train of gears including an intermittent or Geneva gear movement I6.

Means are provided for feeding wrapping material W from a source of supply, preferably comprising a-supply roll carrier or reel I'l, downwardly between the forward en d of said platform 4 andthe adjacent folding roll I5. Said wrapping material feed means comprises a suitable bearing housing I8 in which are journaled a pair of feed rolls, one of which, viz. the roll I9, is driven by a transmission chain 20 from a sprocket 2| on a journal I3 of said folding roll I5, in properly timed relation to the movements of the latter, and

pressed toward the roll I8 in pinching relation to the wrapping material passed between said rolls. Beneath said feed rolls |8-22 is a shear means for severing a downwardly fed section of the wrapping material preparatory to the delivery thereof, with a carton to be wrapped, into the folding roll I5. Said shear means comprises a stationary shear blade 23 and a movable shear blade 24, the latter being actuated at proper times by any suitable arrangement of operating means, including the reciprocable slide 24' and actuating lever 24".

- Arranged beneath said folding roll I upon a 1 supporting plate 25, suitably affixed to the framework 2, is an applicator mechanism 28 adapted to coat a longitudinally foldable end of the wrapper section withl glue or adhesive preparatory to folding operations. This glue or vadhesive applicatormeans includes a rotatable dauber21 and a resilient backer plate 28, between which parts the lower end portion of the .wrapper sec.- tion is initially disposed subject to glue or adhesive applying engagement of said dauber 21. 'Ihe said glue or adhesive applicator mechanism -is driven from the power shaft 6. by a chain and sprocket transmission 28 and gearing 38.

The folding roll l5 comprises a frame or body arrangedto provide a transverse diametrically open passage 3| extending from side to side thereof. Secured to the respective ends of said frame or body so as to projectinto said passageu3| along each side thereof 'are xed tucker blocks 32.v Movable .back and forth through the passage 3| between the open sides or mouths thereof is an ejector member 33 having bifurcate ends to straddle the tucker blocks 32. Said tucker blocks 32 are provided with slots 34 which serve as ways for guide pins 35 carried by the bifurcate ends of said transfer member. The faces of the transfer member are cut away between, the bifurcate ends thereof to thus reduce the thickness of the central portion of the transfer member, and allow room for play of the tension plate sets of the folding roll. The tension plate sets are horizontally disposed in spaced apart'relation within the passage 3| to bound the path of movement of cartons into and out of the latter. Each tension plate set comprises two separate plate members 38 and 36 lying in acommon plane and arranged to be independently yieldable, each such member being movably supported by a pair of suspension .studs 31 which extend outwardly through supporting brackets 38 afilxed to the frame or body of the folding roll; said studs having stop nuts 3 8 on their exterior ends to engage said brackets 38 so as to determine the normal initial positions of the tension plate members. Compression ,springs 48, disposed around the studs 31 between the brackets 33 and the tension plate members, yieldably press the latter into operative engaged relation to a carton entered into the folding roll. Each tension plate member 38 and 38'l extends from one open side or mouth of the passage 3| to the other. One or both sets of tension plates are provided at their middles with inwardly projecting carton stop pins 4|.

plies glue or adhesive to the lower endA of the wrapper material. As the advancing carton engages the wrappingmaterlal, the 23-24 there the other of which, viz. the roll 22, is yieldably are actuated to sever a wrapper section from the latte Continued advance of the plunger 5 n pushes the carton withfthe engaged wrapper section into the passage 3| of the folding roll and between the tension plate sets 36e 5 38', whereby the wrapper section is folded into transverse U-shape about the carton, and at the same time the 'tucker blocks 32 produce the first end tucks t at the folded side of the wrapper section. The advance of the carton and wrapper section into the `folding roll is arrested by the carton stop pins 4|, whereby the carton can not, under momentum, advance into the folding roll beyonid a desired predetermined position, or cant out of proper alignment to the roll, and consequently the projecting lever and upper side foldsf and fof the wrapper section are disposed exteriorly of the roll in correct positions to be properly engaged by the side fold forming devices to be subsequently described; The divided or separate and independently yieldable sections 38-36'- of the sets of tension plates assure propergripping of the entered carton and wrapper section notwithstanding any variation in thicknesses of the carton or inequalities of contour thereof, thus obtaining equal distribution of pressure upon the upper and lower faces of the carton so that the wrapper section is assured of being smoothly spread or laid over such face areas without Wrinkles, buiges or displacement from proper symso metrical relation to the carton. For example, if a carton should be bulged out a little near one end, as frequently happens, especially when the con- .tent of the carton is hand packed, the divided and automatically adjust themselves to such conditions. Again it sometimes occurs that the cartons vary in thickness from end to end, one end sometimes being as much as one-sixteenth of an inch 'thicker than the other, consequently, 40 with single or one-piece tension plates. the cartori would have a tendency to switch or cant out of alignment by pivoting on the thicker part thereof. This is avoided by the compensating pressure effect by the divided and independently yieldable sections 38-36', while at the same time a -rmer holding grip against displacement is exercised upon the cartons and the wrapper section folded around the same.

,The means for effecting the side folds of the wrapper section comprises the following devices:

at the free ends of said forwardly projecting arms I8 are carrier members 41 to which the ends of the folder spade 42 are afllxed so that the 60 latter extends transversely thercbctweenadjacent to the rear side of thefolding roll. Said carrie: members 41 are provided with rearwardly projecting arms 48, and engaged between the undersides of said arms 48 and seating lugs 48, with 65 which said bell crank arms 48 are provided, arc compression springs I8 which yieldably rock said can'ier members on their pivotal connections to normallyswing said folder spade 42 toward the raming m11. Adjustably mounted in supporting lugs 8|, with which said bell crank arms 48 arc also provided, are stop-screws 52 disposed above the ends of said carrier member arms 48 so as to be engaged by the' latter, whereby the normal u r lations of said bell-crank levers 44, and consequent operation of the folder spade 42, comprises a transverse rock-shaft 53 journaled in bearings 54 mounted on the base I of the machine. A cam wheel 55, actuated by the main power shaft 6, has its connecting rod 56 pivoted to a crank arm 51 aiiixed to said rock-shaft. Also affixed to said rock-shaft in proper locations are levers 58, the free ends of which are connecten with the arms 45 of said bell-crank levers 44 by links 59. v v

Suitably fixed in stationary relation and con- V centric to the folding roll I5, and so as to extend over the upper sideA thereof, is a curved folderguard 60. Pivotally connected with the rearward end of said folder guard GII is a set of spring pressed tensional folder leaves. comprising two separate leaf elements 6I and 6I' arranged side by side and so as to be independently yieldable.

rPhe free margin of each leaf element is formed to provide an insturned angular lip 62.

While the carton C isv being delivered into the folding roll I5, as above described, the folder spade 42 occupies its lowered initial position, and when so disposed, the wrapper material W, when fed down, will pass behind the same and between the bell-crank armsl 44. After the carton C and the section of wrapper material is entered into the folding roll I5, the lower side fold f will lie horizontally across the edge of the folder spade 42, as shown in Fig. 9. Before rotary movement is imparted to the folding roll' I5, the bell-crank arms 44 are timed to swing forward, whereby the folder spade 42 is caused to rise. ,By such rising movement, and by reason of the yieldable support of the folder spade, the upper edge thereof will lift the side fold so as to turn the same upward against the rearward side of the carton C as exposed at the mouth of the folding roll, while at the same time the folder spade will tensionally move over/the upturned side fold f thereby smoothly pressing and stretching the same along the carton side, as shown in Fig. 10'. The marginal portion of thev side fold ,f to which adhesive has been applied will be now disposed with the adhesive exposed on its outwardly facing surface. When the lower side fold f has thus been upfolded against the carton side, and before the folder spa-de is returned to lowered normal initial position, the operation of the folding roll actuating means is timed to turn the roll anti-clockwise. Such rotary movement of the folding roll carries theupper side fold f into upwardly movmg engagement with the lips 62 of the tensional folder leaves 6I and BI', whereby the latter operate to down-turn said upper side fold f over the 11p-turned side fold f. As soon as the downturned fold adjacent the angle of bend thereof engages the free edge of the up-turned side fold f, the folder spade 42 is retracted to its normal lowered position. In the meantime, the folding roll I5 is turned a half-revolution, whereby the side fold f' is pressed firmly and smoothly spread against the adhesive treated face of the side fold f, and as the roll comes to rest upon completion of a half revolution, the side folds of the wrapper will be completed, and the position of the carton will be reversed with folded sides ofthe wrapper' forwardly presented ifor movement of the carton y cut of the folding roll and into engagement with end folding devices to be subsequently described. The successive stages of the side folding of the wrapper are illustrated in Figs. 13, 14 and- 15 of the drawings.

It will be noticed that by regulating the position stop-screws 52 that the folder spade 42 may be adjusted toward and .from the face of the carton as initially disposed in the folding roll. By such adjustability the folder spade 42 may 10 be initially set the correct distance for properly engaging the lower side foldf and the carton face,

to not only smoothly spread the fold against the carton face when the folder spade 42 is actuated, butalso to hold the fold during the initial' 15 roll turning movement until engaged by the downturned upper side fold f. Should the carton vary Slightly in Width, the `exible or yieldable support of the folder spade 42 will render the latter self-compensating as to any such variations.

The divided or separate folder leaves 6I and 6I', by reason of their ability for independent yieldable movement, will be self-compensating relative to any variation in width of a given carton end to end, when the latter is positioned against the stop pins 4I.. For example, it sometimes happens that a filled carton is somewhat wider at its ends than at the portions intermediate the ends, but in such event, the separate folder leaves (il-6I' will conform to such vari- 30 ations, consequently assuring complete and firm engagement of the wrapper side folds throughout lthe entire area of the latter, with resultant assurance of smooth spreading of the folds upon the carton side without production of wrinkles or other displacement.

Upon completion of the wrapper side folds in the manner described, the carton C aspartially enveloped in the wrapper section is ready to be discharged from the folding roll I5, and delivered 40 to and carried through wrapper end folding means. The discharge of the partially wrapped carton from the folding roll is accomplished as follows:-

As a succeeding carton is entered into the rear side-of the folding roll by the advancing plunger 5, the partially wrapped carton, now disposed at theforward side of the folding roll, is pushed out by the forward movement of the ejector member 33 which is engaged by push fingers 53 carried by 50 the plunger 5 so as to be positively pushed forward from the rear side to the forward side of the folding roll. On such forward movement of the ejector member 33, the same engages the partially wrapped carton and ejects the same from the folding roll. In order to assure that the ejected partially wrapped carton completely clears the mouth of the folding roll, the operation of the push-fingers 63 is such that the ejector member 33 is projected somewhat beyond the 'mouth of 60 the folding roll, and against yieldable spring pressed buffers 64 suitably housed in portions of vtucker blocks 65 to be later referred to (see Fig.

11 of the drawings). When the. plunger 5 and push fingers 63 are retracted, the spring pressed 65 buffers 64 will push back the ejector member 33 flush with mouth of the folding roll I5 preparatory to rotary movement of the latter.

The ejected partially wrapped carton is deposited upon a slideway 66, and as it mov'es on to "0 the latter it passes between the stationary tucker blocks 55 which are respectively located at opposite sides of the receiving end of said slideway. In Passing between the tucker blocks 65, the second end tucks t are produced, thus completing at each end of the carton wrapper outwardly and horizontally projecting lower and upper end folds e and e' respectively.

Beyond the tucker blocks 65 are upwardly inclined lower end fold turning blocks 61, which, as the partially wrapped carton is propelled along the slideway 66, first engage the lower end folds e so as to up-turn the same in folded relation against the ends of the carton.v While the lower end folds e are thus being folded home, the upper end folds e' v remain in horizontally extending position, and as the carton is propelled onward the underside of these upper end folds e'- are carried in passing contact with continuously rotated adhesive applicator rolls or wheels $8, which are mounted on counter shafts 69 and driven from said power shaft 6 by chainand sprocket transmission means 10. These adhesive applicator rolls or wheels 98 are disposed over glue pans 1| in which the periphery or the mus or wheen tuv dip so as to pick up and transfer'the adhesive to the underside of said outwardly projecting upper end folds e'. Beyond the point of application of the adhesive to said upper end folds e' are downwardly inclined upper end fold turning blocks 12, which, as the carton is propelled along the slideway 99, engage and down-turn said upper end folds e'. into overlying and adhering relation to the up-turned end folds e, thus completing the wrappingof the wrapper section in desired enveloping relation to the carton C. The successive stages of the end lfolding of the wrapper are illustrated in Figs. 16, 17 and 18 of the drawings.

Beyond the fold turning blocks 12, and borderv. ing the sides of said slideway 68, are heater blocks 13 served by electrical heater elements- 14. These heater blocks 19 engage the end folds of the carton wrapper and serve to rapidly dry and set the adhesive holding said end folds in position preparatory to discharge of the wrapped cartons to the stacking mechanism. The means for propelling the cartons through the slideway 99 and thereupon delivering the same tqstacking mechanism, comprises a reciprocablek propeller bar'19 having`upstanding push-pieces V19. This propeller bar 15 reciprocates in a channeled guidel cradle 11 which is supported by levers 19 mounted on rock-shafts 19. Timed oscillations are imparted to said rock-shafts 19 by a cam drive means 99 on the power shaft 9, through a connecting rod 9| the end of which is connected withV ya rocking lever 92 a'illxed to oneV of said rockshafts 19. The rock-shafts are `connected for 'l simultaneous movement by means' of levers Il 'and an interconecting link 99. The propeller bar 15 is longitudinally reciprpcated in the cradle 11 by means of a rock-shaft 95 hav- 'ing lever arms 99 connected by links 91 to a erom-strap 99 carried by the propeller bar 19. The rock-shaft si is escalated in properly timed relation by an eccentric 99 actuated by the power shaft 9, the connecting rod 99 of said eccentric being connected with an actuating lever 9| amxed to said rock-shaft 99. vIn theoperation of the cradle 11 .the`same is raised to elevate the propeller b ar s as to bring thel push-pieces 19 into operative propelling engagement with the cartons bar. At the end of the driving, stroke of the propeller bar, the cradle is lowered to disengage the push-pieces 19 from the cartons Cpso that the same pass beneath said cartons while the 4propeller bar is being retracted preparatory to a succeeding carton propelling stroke.

.wise between said guide plates 92-93.

, mechanism therefor, since, in such case, the spring I would yield and allow the slotted link Beyond the heater elements 14, the sides of the slideway 66 are bounded by up-standing guide plates, one ofv which, viz. the guide plate 92 is stationary, and the other of which, viz. the guide plate 93 is spring-pressed toward the stationary I plate. As a consequence oftthis the wrapped cartons, as they are propelled along the slideway 66 to the 'discharge end thereof, are gripped end- Located at the discharge end of the slideway 66 is a stacking chute 99 which is disposed in a plane below that of the slideway 66, and which is connected with the latter by a curved skidway 95. The guide plates 92-93 extend outwardly over this skidway 95 so as to grip and hold a wrapped carton suspended above the same, until, such carton is positively engaged and moved by a turnover'paddle and thereby transferred to the stacking chute 99. Mounted in a bearing 96 is a spindle 91 having its free end extending trans- 20 versely above the skidway 95. Fixed on this spindle 91, so as to' be oscillated thereby, is a turn-over or carton transfer paddle 98 which is arranged to swing through said skidway 95. Means are provided for actuating said paddle 98 25 in timed relation to the movement of wrapped 1 cartons off of the slideway 66. Such actuating means comprises an actuating lever 99 which is aiilxed to the outer rock-shaft '|9'so as to be oscillated thereby. The spindle 91 is provided 30 with a lever arm |00. Connecting said actuating lever 99 with said lever arm IUI)l is a link IUI. 'I'his link has an elongated 'slot' |92 in which the pivoting pin |09 connecting said lever arm |99 thereto is engaged. A pull spring |09 anchored 35 at its lower end and having its upper end coupled to said pivoting pin |93, normally holds the latter in operative engagement with the lower end oi' said slot |92, but yieldable for movement in said slot,v to thereby yieldably engage the paddle rocking means with the actuating means therefor. Initially the paddle 99 is up-swung to substantially horizontal plane above the path of travel of the wrapped cartonsbetween the guideplates 92-93. As thewrapped cartons are intermittently moved outwardly'along -the slideway 99, one of the same vwill be moved off of slideway and suspended by the gripping pressure of theguide-plates 92-99 flat wise above the 5 0 skidgway 95 and beneath the paddle 9|. .Subsequent to such disposition of a wrapped carton. the paddle actuating means operated to swing down the paddle 99, whereby the same engages the suspended carton and sweeps the s e downward through the skidway 95, while a the same time turning the same sidewise softhat it is delivered upon the' stacking chute 94 upstanding on one side, the side at which the side folds f--f' of the wrapper VJare lo'cated being uppermost. If. for any reasona carton should become jammed' duringthe period of transfer thereof to the stacking chute,` the paddle will yield thereto without strain upon lthe'same or the actuating |9| to move relative to the lever arm |99 without 4imparting movement or undue strain to the .paddleas arrested by a jammed carton. This .arrangement provides a safety factor which eliminates any risk of accidental breakage of leither'the carton or the paddle mechanism.

As the paddle 99 successively delivers wrapped cartons' upon the stacking chute, such cartons will be Vstacked together and progressively moved 13 along the chute preparatory to removal thereof for packing or other purposes.

It will be observed, as above stated, that the adhered wrapper side folds f-f are disposed uppermost when the cartons are delivered upon the chute 94. In yorder-to assure thorough drying and setting of the adhesive applied between the side folds f-f, before the wrapped cartons are finally removed from the machine, a timed means for applying drying heat thereto is provided. This means comprises a heater block |05 equipped with an electrical heater element |06. Said heater block |05 is supported for up and down swinging movement by lever arms |01 whichv are pivotally connected with the sides of the stacking chute 94. As thus supported, said heater block |05 is normally transversely disposed above the cartons as delivered to said lstacking chute. Connected with said heater block |05 is a lift arm |08 provided at its free end with an anti-friction roller |09 which is operatively engaged by a cam 0 that is fixed on and oscillated by said vspindle 91. -The heater block, by timing control of said cam ||0, is lowered and temporarily held in contact with the side folds f-f o'f the carton wrappers, as the cartons are successively delivered upon the stacking chute and beneath the heater block. As the wrapped cartons are moved outwardly through the stacking chute, the same pass beneathand in contact that high speed operation of the machine ispossible and a maximum output of wrapped cartons continuously maintainable.

As many changes could Ibe made in the above described construction and many apparently l widely different embodiments o'f this invention could be made without departing from the scope thereof, as defined in the following claims, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limitingsense.

We claim: e

1. In a wrapping machine, an intermittently rotatable folding roll having a diametric article receiving passage containing an ejector member movable therein, tension plate sets respectively bounding both horizontal sides of said receiving passage, each set comprising a pair of springpressed independently yieldable plates each of a width approximating one-half of the mean width of said receiving passage, the plates of each pair being arranged side by side and normally occupying a common plane with their inner longitudinal A margins closely adjacent.

2. In a wrapping machine, an intermittently rotatable folding roll having a diametric article receiving passage containing an ejector member movable therein, tension plate sets respectively bounding the horizontal sides of said receiving passage, each set comprising a plurality of springplane, and article stop pins connected with said tension plates to limit the Amovement of an article and' wrapping material into said folding roll passage.

3. In a wrappingmachine, an intermittently 5 rotatable folding roll having a diametric' article receiving passage, an ejector member movable therein, tucker blocks fixed within said passage at the vertical sides thereof said ejector member l having bifurcated sides .to straddle said tucker 10 blocks, tension plate sets respectively bounding the horizontal sides of said passage, each set 'comprising a plurality of spring-pressed independently yieldable plates arranged side by side and normally occupying a common plane, and article l5 stop pins connected with said tension plates.

4.11m a wrapping machine, an intermittently rotatable folding roll having adiametric article receiving passage, an ejector member movable therein, tucker blocks fixed within said passage at 20 the vertical-sides thereof, said .ejector member having bifurcate sides to. straddle said tucker blocks; tension plate sets respectively bounding the ,horizontal sides of said passage', each set comprising a plurality of spring-pressed independ- 25 ently yieldable plates arrangedside by side and normally occupying a common plane, article stop pins connected with said tension plates, means for insertingv an article and wrapping material into the folding roll passage,a vertically oscil- 30 latable folder spade disposed exteriorlyv of said folding roll and adjacent to the receiving end of its passage, means timed to actuate said folder spade after the article and wrapping material areentered into said folding roll whereby said spade 35 folds upwardly against the outwardly exposed side of the article a lower projecting portion of said wrapping material to form a first side fold, means contiguous to said folding roll and operative when the latter is rotated Vfor down-folding an upper 40 projecting. portion of said wrapping material to form a secondside fold'overlapping said first side fold, and means through which the partially wrapped article is moved upon ejection from said folding roll for completing end folds' of the wrap- 45 per.

5. In a wrapping machine, an intermittently rotatable folding roll having a diametric article' receiving/,passage, an ejector member movable therein, tucker blocks iixed within said passage at 50 th-e vertical sides thereof, said ejector member having bifurcate sides to straddle said tucker blocks, tension plate sets respectively bounding the horizontal sides of said passage, each set comprising a plurality of spring-pressed independently yieldable plates arranged side by side and normally occupyin'ga common plane, article stop pins connectedl with said tension plates, means for inserting an articleand wrapping material into the folding roll passage, a vertically oscillatable folder spade disposed exteriorly of said folding roll and adjacent to the receiving end of its passage, means timed to actuate said folder spade after the article and wrapping material are entered into said folding roll whereby said spade folds upwardly against the outwardly exposed sidel of the article a lower projecting portion of said wrapping material' to form a, first side fold, la substantially semi-cylindrical folderv guardcontiguous to the upper half of said folding lroll, a plurality of spring-pressed independently yieldable folder leaves arranged side by side and each pivotally connected to said folder guard, said leaves having at their vfreev ends inwardly projected lips contiguous to the upper margin of 6 the receiving end of said folding roll passage, said folder leaves being adapted upon rotation of the folding roll to down-fold and smoothly stretch an upper projecting portion of said wrapping material to form a second side fold overlapping said first side fold, and means through which the partially wrapped article is moved upon ejection from said folding roll for completing end folds of the wrapper.

6. In a wrapping machine, a folding roll havi ing a diametrlcally disposed article receiving passage, means for inserting an article and wrapping material intosaid roll, and means for up-folding a lower projecting portion 0f the wrapping material against the exposed side of the article -to form a first side fold of a wrapper therefor,y

said means comprising a pair of pivoted bellcrank levers with their forward extensions in straddling relation to said roll,carrier members pivoted to said forward extensions of said bellcrank levers, an upstanding folder spade connected to and between said carrier members and normally disposed below and contiguous to the lower margin of the receiving end of said roll passage, said carrier members having rearwardly extending arms, spring means connected with said forward extensions of said bell-crank levers to yieldably press said folder spade toward the folding roll, adjustable stop-means also carried by said forward extensions of said bell-crank 10 levers and engageable by said carrier member arms to determine the normal initial position oi',A said folder spade relative to the receiving end of the folding roll passage, and means timed to actuate said bell-crank levers after; the article 15 and wrapping material are entered in said folding roll whereby said spade is raised to fold turning wiping and holding position.

' HARRY L. EVANS.

GEORGE Il HOHL.

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