US2420417A - Cone jacket forming machine - Google Patents

Description

May 13, 1947. J. CUTLER 2,420,417

CONE JACKET FORMING MACHINE Filed July 10, 1943 ll Sheets-Sheet l icTL m /Jacob Cutler May 13, 1947. J. CUTLER 1 CONE JACKET FORMING MACHINE Filed July 10, 1943 ll Sheets-Sheet 2 iii. v I B 156 I60 I Jzmz cuzzer May 13, 1947. J. CUTLER 2,420,417

CONE JACKET FORMING- MACHINE v Filed July 10, 194: 11 Sheeiis-Sheet 5 1 .5- I If [29 y 1947- J. CUTLER CONE JACKET FORMING MACHINE Filed July 10, 1943 ll Sheets-Sheet 4 May 13, 1947. J. CUTLER CONE JACKET FORMING MACHINE Filed July l0, 1943 ll Sheets-Sheet 5 Jacob Cu/ZZ er [May 13, 1947. J. CUTLER GONE JACKET FORMING MACHINE v ll Sheets-Sheet 6 Filed July 10, 1943 awe/whoa Zer u c gcob Cui M y 1947. J. CUTLER 2,420,417

CONE JACKET FORMING MACHINE Filed July 10, 1943 11 Sheets-Sheet 7 gwua/wbom JacoZ CuZZer y 1947- J. CUTLER 2,420,417

CONE JACKET FORMING MACHINE Filed July 10, 1943 ll Sheets-Sheet 8 D5. 5/. T155115. I V

| 139 14/ .I: 1 m I 16 2 I l l [I 43:

Jclcoz CuZZer May 13, 1947. J. CUTLER CONE JACKET FORMING MACHINE Filed July 10, 1945 ll Sheets-Sheet 9 y 1947. J. CUTLER CONE JACKET FORMING MACHINE 11 Sheets-Sheet 10' Filed July 10, 1943 JacaZ 'CuZZer May 13, 1947.,

jwua/wtom Jacob CuZZer Patented May 13, 1947 CONE JACKET FORIVIING MACHINE Jacob Cutler, Matapan, Mass., assignor to Maryland Baking Company, Inc., Baltimore, Md., a corporation of Maryland Application July 10, 1943, Serial No. 494,239

6 Claims.

My invention relates .to machines for folding paper blanks into conical form and sealing the overlapped edges together.

More specifically, the invention relates to machines for forming frustro-conical jackets for covering the stems of ice cream cones.

Primarily, the present invention has for its object to provide a simple, portable, single-unit machine that can be manufactured at a relatively low cost and sold at a reasonable price to the smaller ice cream cone manufacturers and dealers who may wish to make their own jackets.

The invention further has for its objects to improve the several mechanisms employed in such machines, as, for example, the blank transfer mechanism, the blank forming mechanism, and the formed-jacket discharging mechanism.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following detailed description, and then be particularly pointed out in the appended claims, reference being had to the accompanying drawings, in which:

1 is a top plan view of the machine which embodies my invention.

Fig. 2 is a side elevation thereof.

Fig. 3 is a side elevation of the side opposite that of Fig. 2.

Fig. 4 is an enlarged detail vertical sectional view on the line 4- of Fig. 5.

Fig. 5 is a horizontal sectional view on the line 55 of Fi 4.

6 is a detail plan view below the line 66 in Fig. 4.

Fig. '7 is an enlarged plan view of the glueapplying unit.

Fig. 8 is a sectional view on the line 8-8 of Fig. 7.

Fig. 9 to Fig. 13, inclusive, are detail sections on the line 99 of Fig. 5, showing the different positions of the parts during the forming, pasting. and discharging of the jacket.

Fig. 14 to Fig. 22, inclusive, are detail views of the cams and cam levers for operating the several moving parts of the transfer, folding, and

discharging mechanisms and the vacuum controls.

Fig. 23 is an enlarged detail elevation of the one-way clutch drive for the discharge mechamsm.

Fig. 24 is a"detail view, partly in section, with the leaf-spring l9ll removed.

Fig. 25 is an enlarged detail section on the line 25-25 of Fig. 1.

Fig. 26 is a vertical cross section on the line 26-26 of Fig. 25.

Fig. 27 is a detail cross-sectional view through one of the brake devices.

Fig. 28 is a detail elevation of the glue applicator shaft and its fingers and cam.

Fig. 29 is a cross section on the line 29-29 of Fig. 28.

Fig. 30 is a vertical section of the suction control valve.

In the drawings, like numerals and letters of reference indicate like parts in all the figures.

In general In general, the machine embodies a support ing frame, a drive motor, a Vacuum pump, a magazine for jacket blanks, a. glue-applying device to apply glue or paste to the blanks, a means for conveying the blanks from the magazine, a mandrel and a means to fold the blanks around the mandrel, and a mechanism for stripping the jackets from the mandrel and discharging the same from the machine.

The frame of the machine comprises vertical corner angle bars 1, bottom side and end angle bars 2, top angle bars 3, intermediate side angle bars 4, vertical supports 5 and horizontal supports 6, 6a, 6b, 6c, 6d.

Mounted on the support 6 is a driving electric motor I and a vacuum pump H. The motor 1 has a drive pulley 9 and a smaller drive pulley i0 secured to its shaft 8 (see Fig. 3), while the pump shaft l2 carries a large driven pulley l3. The pulleys 9 and I3 are connected by a belt l4, thereby constituting a reduction-speed drive for the pump. The small pulley I0 is connected by a belt I! to a large pulley IE on a stub shaft l5.

The pulley I6 is secured to the stub shaft l5 as is also a pinion I8 which meshes with a master gear 20 on a cam-shaft I9.

The cam-shaft i9 is journale'd in suitable bearings 2| that are mounted on supports 22 which are carried by the side bars 2 of the frame.

Secured to the bars 4 is a transverse angle bar 23, there being another such bar 23 mounted below and secured to the supports 22. Secured, at suitably spaced intervals, to the bars 23 are vertical supports 24 for the pivots 255 of the several cam levers shown in detail in Figs. 14 to 22 inclusive.

The operating cams Referring now particularly to Figs. 14 to 22 inclusive, it will be seen that the several cams comprise split clamps that carry the various cam rollers. In Fig. 14 is shown the edge lapper cam 25 and its cooperating lever 21. shown the cam 29 and its lever 38 which effect the raising and lowering of the device which lifts the blank to and partly folds it around. the man drel. Fig. 16 shows the cam 3| and lever 32 which effect the operation of the glue-applicator. Fig. 1'1 shows the cam 33 and its lever 34 which operate the throw-off belt lifting and lowering means. Fig. 17 also indicates the cam 35 and shows its lever 36 which operate the throw-off and discharge belts drive.

Fig. 18 shows the jacket blank carrier advancing cam 31, th jacket blank carrier retracting cam 39 and the respective arms 38 and 40 of the lever 4| which cooperate with the cams 31 and 39.

Fig. 19 shows the cam 42 and its lever 43 which serve to effect the raising and lowerin of the jacket blank carrier when the carrier is beneath the magazine. Fig. 20 show the vacuum control cam 44 and its lever 45. Fig. 21 shows the blade-operating cam 46 and its lever 41, while Fig. 22 shows the edge sealer operating cam 28 and its lever 28.

The blank-folding mechanism On a base plate 48, which is secured. to the frame of the machine, are pairs of spaced standards 49 and 59. A cross bar (see Figs. 2, 3

and 4) is borne on the tops of the standards 49.

On the bar 5| there is secured plates 52 on which spaced angle guides 53 (see Figs. 1 and 5) are mounted so as to provide T-slots in which slides 54 and 56 are operatab-le.

A forked blade 55 is rigidly secured to the slide 68 and an adjusting nut constantly to exert a downward pressure on plate 58 for a purpose later to appear.

At the respective sides of the machine and on the top bars 3 are mounted bearing brackets 6|, 6Ia carrying shafts 62, 82a. Secured to the respective shafts are arms 63, 63a which are con nected to the respective slides 54, 58 by connect ing rods 64, 6.4a (Fig. 1). To the shafts 62, 62a are respectively secured arms 65, 65a to which theconnecting rods 66, 66a are respectively connected. The rod 66 connects to cam lever 21, while the rod 66a connectsv to cam lever 28, hereinbefcre referred to.

Secured to the cross bar 5|. is a. mandrel 18 having a shank 1| and a longitudinally disposed blade groove 12. The blade groove is located on top of the mandrel and receives the blade 16. A pair of vertical slotted guides 15 extend alongside of the shank TI and a part. of the mandrel and have lugs 83 whichpass into, holes in. the

In Fig. is

4 mandrel and are secured to the bar 5| by screws 84 (Figs. 4 and 5), Adjustably mounted on the bar 5| are bracket bars 69 which carry the bracket 68 on which the magazine 61 is mounted (see Fig. 5)

The mandrel and shank have a bore 13 from which ports 14 lead to atmosphere. The blade 16, which is longitudinally slidable in the groove 12, is secured at its rear end to a carrier 11. The ends of the carrier pass through the slots in the member 15 and carry rollers 18 and collars 19. The blade 16 has holes 254 which register with certain of the ports 14 when the blade is drawn back.

The forked ends of the lever arms 89 that are secured to a shaft 8| (Figs. 1 and 4) engage the rollers 18. The shaft 8| is journaled in bearing standards 82 that are secured to the cross bar 5|. An arm 81 forms with the arms a bell-crank lever, to the arm 81 of which a connecting rod 88 (-Fig. 3) is pivoted. The rod 88 is also pivoted to the cam lever 41, hereinbefore referred to.

The guides 15 are joined, at their forward ends, by a bridge 85 that carries an adjusting screw 88 for holding the blade 16 down in its groove 12. It will be noticed that the groove 12 does not extend to the apex or outer end of the mandrel 10, but tapers off about one-third the distance between the outer end of the mandrel and the bridge 85 (Figs. 4 and 5). Therefore, when the blade 16 advances, it will ride up over the top of the tip end of the mandrel for a purpose presently made clear.

The blank transfer-mechanism slidably mounted on rigid guide rods 90 is a carriage 9| (Fig. 1) which carries a bracket 89. Oil pads 92 are located on the rods 90 between furcations of the sliding carriage 9| and slide with it along the rods to lubricate the bearing surfaces. .93 is a back-stop for the carriage and is secured to the frame adjustably.

Vertically, slidably mounted in suitable bearings in the. bracket 89 (Figs. 3, 4 and 6) is a rod 95 to the top of Which is rigidly secured an offset. bracket 98, to which the blank removing and carrying forked member (or transfer member) 99 is rigidly fastened, as at I00. The rod 95, between the upper and lower bearings 94, carries a spring 91 and a spring-tensioneadjusting collar 95. The shaft or rod 95 is held from turning on its axis by means of an arm 258 whose end is slidable in a vertically slotted stud 256 that is secured to the bracket 89 (Fig. 3).

The jacket blank transfer member 99 includes converging arms IIII having along their upper faces longitudinal grooved portions I82. Ducts I84, I05 are formed in the membe 99 and communicate with ports I03 in the grooved portions I02 (Fig. 6). The duct I05 is connected to a flexible duct I81 by means of a nipple I88. The duct I 01 is connected to the suction regulating valve I25 that communicates withthe suction pump I via fitting I21, flexible duct I24, rigid duct I23, suction control valve H9, and flexible duct I22 (Figs. 2 and 3).

Brackets I68, secured to the frame of the machine, carry a rock shaft I09 and an arm I I8. A connecting. rod II4. connects. arm I I 9 with cam lever 43 (Figs. 2 and 19), Secured to the shaft I89 is a lever or rocker arm I I I having a beveled edge I I2, The lever I II lies in the plane in which the rod 95 is moved by the carriage 9| so that when. the carriage is in its retracted or back position. the rod 95 will have. ridden. up onto. the end of lever III (Fig. 3). A spring H3 connects the rear end of lever III with the framev of the machine and constantly tends to urge the lever- II I to lowe its beveled end.

The sliding carriage 9| also has a slotted lug H5 to which is pivoted one end of a link H6, the other end of which is pivoted to the cam lever M.

The suction control and regulating valves The suction control (on and oif) valve H9 has its stem I29 linked to a lever H8. One end of the lever H8 is pivoted to a bracket II'I, While the other end thereof is joined bya spring I32, constituting a yieldable connection, to the connecting rod I 3: that joins to cam lever 55 (Figs. 2 and The valve IE9 (Figs. 2 and 3G) is of a special kind in order to effect properly the timely action of the suction means. This valve comprises a casing having a valve seat 259 for controhing the main passage. The neck 262 of the valve has an annular groove 233 from which leads a port 285 to the nipple 2-5? to which the flexible duct I 33 connects.

The stem 2% of the valve has the valve plug ZEI which cooperates with the seat 253. The stem also has a bore 255 entering its lower end. Ports 265 effect communication between the bore 2% and the groove 263 when the plug ZBI is seated, i. e. when the stem 2% is pressed down by the lever H8, thereby cutting off the suction to the fork fingers IGI and the mandrel and establishing suction in the pipe I56.

The valve stem is held down only for a short time, namely only While head I1 3 is taking a blank off the blank transfer member 93 (Fig. 14) and elevating it to-the mandrel it. As soon as pipe I39 contacts the mandrel and is depressed to the bottom of the groove I38, valve H3 returns to normal position i. e., with passage via seat 25.9 open and passage via 2%, 263, and 2.65 closed.

The vacuum regulating valve I25, hereinhefore referred to, regulates the degree of vacuum in the transfer fork, while a valve i223. that is connected to fitting I27 controls the degree of vacuum in the mandrel. A rigid pipe I28 has one end connected to valve I25 and the other end". to a flexible pipe I 29 that is in turn connected to the rigid pipe I30, which is secured. to theshank ii of the mandrel Iii and communicates'with the bore 73 thereof (Fig. i). adjusting the valves I25 and IE5, the proper degree of suction at each place may be had when Valve H9 is open.

The blank folding mechanism This mechanism includes the forked. blade 55', the roller carrying plate 58, and the mechanism which is best shown in Figs. 4 and 9- to 13 inelusive.

Located for up and down movement beneath the operative part of the mandrel i8 is a grooved folding head I 33 that. is carried by a vertically reciprocatable rod The rod I3 5. is mounted in a bearing boss 935 (Fig. 3) depending from the plate t3 and is pivoted at its lower end' to a lever I35 that is fulcruzned in a second boss I44, also depending from the plate 43. The le ver I 35 is connected, by a connecting rod I31, with cam lever 3i"! (Fig. 16).

The groove I38 in the head i133 conformsto the shape of the mandrel it. The head has a bore I39, intersecting the groove I38. through which bore a pipe ltd projects. The pipe I40 is held with its upper or free end located on a. level preferably slightly below the level of the 6 top of the head; by means of a spring I42 and a stop collar IAI The lower end of the pipe I 35 is connected to a flexible duct I 43 (Figs. 2 and 3 which: in turn connects to and is controlledhy the. valve I I 9.

The jacket throw-017 mechanism Mounted in suitable bearings on the standards is a shaft I45 on which is secured a grooved belt pulley I59 and on which is pivoted a pair of arms I43 whosefree ends carry a shaft I50. Connected arms I56 are pivoted to shaft I56 and in turn carry a shaft I on which is journaled a grooved pulley I58 (Fig. 25). A grooved pulley I5! is journaled to turn freely on shaft I50, which shaft is also free to be rocked in. its bearings in arms I49. Arms I56, however, are secured to and turn with shaft I50.

An arm I52 (Fig. 2) is also secured to shaft I59. A connecting rod I 53 (made in two parts, slidably and spring loaded as at I55, connected together) i'oins arm I 52 to cam lever 34 Areturn spring I5 3 (Figs. 2 and 17) servesv constantly to return pulley I58 to the full-line position in Figs. 2 and 3 (dotted-line position, Fig. 25) when cam lever 34 is disengaged by cam roller 35. Cam roller 35' is behind roller 33' and not. visible in Fig. 17. A V-type belt I60 takes around pulleys. I 58-, I51 and I59.

A belt tightener is provided to keep belt IEB taut. It comprises a pair of arms pivoted respectively to the arms I49 at I62. and carrying be tween them a. grooved. roller IBI which rides on the belt I58 under pressure of the spring I53.

A pair of bars I645; adjustable and depending by links [Bl-IE8 from arms I49, carry spaced, grooved, belt-engaging rollers I'IB for engaging andholding straight the lower flight of belt Hill.

The links. I 57 are pivoted at I62, while links I68 are slotted and secured by screws 5% to the arms I49.

Blocks I l-8 are adjustably secured to the uprights 50 on the opposing faces thereof and carry a shaft I41 on which is secured a grooved pulley I14 and a gear wheel I46 which meshes with a similar. gear wheel I46 secured to shaft It'll so that motion imparted to shaft M5 is transmittedto shaft Ml.

Arms III are pivoted to shaft I47 and at their free ends, carry a grooved pulley H3. An endless V -type belt 15. takes over pulleys I23, I14 and over a guide. I'I'fi whose bracket arms ii! are adjustably secured. by screws I78 to the arms I'II (Figs. 25, 26). The upper flight of belt 5'55 is held up against the lower flight of belt I631 by means of the. spring I63 and a second spring H9 that connects an arm I49 with an arm Ill]. The pulley I13 lies below pulley 51, while arms IE6 and pulley I58 overhang pulley I13.

Collars i5I on shaft I58 engage adjustable stop screws I80 secured. to plates 52, for lining up the throw-oh. device with the mandrel.

The shaft [4:5- is turned. at proper intervals by means of a oneway friction clutch device which will now' he explained by reference, particularly, to Fi s. 2,23 and 24.

Secured to the shaft M5 is a clutch wheel IBI having a lateral flange. over which is loosely fitted the slotted ends of arms I64. The arms I have their inner ends resting in recesses I 83 in a collar 182 loose on shaft I 4.5, the collar having an arm IQI that. has a T-slot to receive the T-Iol-ock I22 to which is pivoted, at I93, the connecting rod 18.4 that. connects with the cam lever 36 (Fig. 1'7).

Each arm I84 carries a, leaf spring I825. To

7 the collar I82 is fastened rigid arms I86 having threaded slotted ends I81 to receive the adjusting screws I88. Clamp screws I89 are provided for the split ends I81. A leaf-spring I90, held on the shaft by a collar I9I, keeps the arms I 84 in place (Fig. 23).

A bracket I95 supports a trough I96 into which the finished jackets are delivered.

The adhesive-applying mechanism Referring now more particularly to Figs. 1, 2, 7 and 8, it will be observed that a plate I9! is mounted on the frame of the machine. The pot I98 for adhesive is secured on this plate and the power transmitting mechanism therefor is also mounted on the plate.

The pot I98 has a cover I99 which is cut away, at 20I, to provide a filling opening and at 290 to allow clearance of the adhesive rollers.

Journaled in suitable bearings 206 is a shaft 203 which passes through the pot and carries the lower adhesive-gathering roller 202. Outside the pot the shaft 203 carries a gear 204 and a driven gear 205, the latter gear meshing with a gear 201 on a shaft 209 which is journaled in a bearing 209.

Journaled in a bearing 2 I2 is a. drive shaft 2| I. The shafts 2H and 293 are connected by bevel gears 2| and are driven by a sprocket and chain connection 2 I3, 2I4, 2I5 from cam shaft I9.

Cast with the pot I98 are side posts 2I3 between which, at 2", is pivoted a skeleton frame 2I8 which carries the shaft 222 of the upper adhesive-spreading roller 223. The frame 2I8 has an ear 2I9 which is adjustably connected to the rigid threaded post 22I to hold the rollers 202 and 223 in contact or so close together as to provide a thin layer of adhesive on the surface of roller 223. The post 22I is secured to the base extension 220 of the adhesive pot I 98, as best shown in Fig. 8.

A gear 224, fast to shaft 222, meshes constantly with gear 204.

Standards 225 are fastened to the pot I98 and carry a shaft 221 on which is secured a skeleton frame 229, in the free ends of whose arms is journaled a shaft 232 which has a back 233'and a clamp plate 234 between which the applicator finger-plates 236 are secured by means of screws 235 (Fig. 28). The frame 226 has an arm 228 to which is pivoted a connecting rod 229 that connects to the cam lever 32 (Figs. 3 and 16). A spring 280 connected to lever 32 and anchored to the frame of the machine continuously tends to swing the frame 229 counterclockwise in Fig. 8.

The frame 226 has lugs 230 carrying adjustable stop screws 23I that rest on the top ends of the posts 2| 6,

The shaft 232 carries a gear 23! that normally meshes with gear 234. A cam 238, fixed to the shaft 232, cooperates with the fixed cam track 239 that is mounted on the posts 2 I6.

As the blank transfer member is raised to contact the lowest blank in the magazine, the applicator 238, 226 is also raised and the fingers 235 move alongside the adjacent furcation IOI of the member 99 so as to contact the blank as it is being pulled down by suction onto the member 99 in order to give a wiping action of the blank over the edges of the applicator fingers to brush on the adhesive. If desired the fingers may be timed to apply the paste before the blank is sucked down.

As the machine is quite rapid in its operation, I provide damping brakes on the shafts 02., 62a

and BI, the construction of which is best shown by way of example, in Fig. 2'7. Referring to that figure, it will be seen that two brake shoes I and 244 carry liners 242 for engaging the particular shaft whose movements are to be deadened; screw bolts 245, spring-loaded as at 246, pass loosely through the short block 244 into the long block MI. The long block is anchored against turning by means of a bolt 243 passing through it and threaded into a fixed support, as BIa for example. The degree of friction applied to the shaft may be regulated by screwing in or backing off the screws 245 as may be desired.

Electric power lines (not shown) are led into box 241 where the power is controlled by an on and off switch 248 of any approved kind. Armored cable 249 conveys current to the motor 1 from the switch box 241.

Air is discharged from pump II through a duct 250.

p The machine may be provided with casters 25I for transporting purposes.

The magazine 61 is provided with leaf-springs 253 and a finger 268 for holding the pack of blanks from falling out of the magazine, and for this purpose the springs 253 have their lower ends 251 bent inwardly (Figs. 4 and 5).

Operation Assume the parts to be in the position shown in Figs. 1, 2 and 3. At this time the blank transferring mechanism is in its retracted position, the fork 99 lying directly beneath the magazine 67.

Cam 42 is just about to engage lever 43 (Fig. 19) to cause lever III to lift rod 95 and the jacket-transferring member 99 in order to gather a jacket blank from the magazine. Continued operation of the machine causes the member 99 to be raised up to the magazine (see dotted lines, Fig. 4) causes plate 58 to advance in the direction of the arrow (Fig. 12) to the position shown in Fig. 13; causes valve II9 to open, allowing pump II to produce a suction in grooves I02 of the transfer fork, thereby to draw down the bottom blank from the magazine. As soon as the blank has adhered to the arms IOI of the fork 99, the fork is instantly lowered, whereupon the carriage 89 is advanced toward the mandrel I0. As the carriage advances, taking with it the blank, the head I33 remains at its lower position so that it will be straddled by the fork when the fork reaches its farthest advanced position (Fig. 9).

As soon as the fork 99 reaches the position shown in Fig. 9, the head I33 rises and the arms I56 are swun down to bring the belt I down into position to throw off the previously formed jacket w (Fig. 9),, from the mandrel 10; at the same time the jacket is lifted from the fork arms I 9|. By the time the head has risen from the position shown in Fig. 9 to that shown in Fig. 10 the previously formed jacket will have been thrown off and the fork 99 will have been retracted.

Further movement causes head I38 to continue rising until the position of Fig. 11 is reached, at which time the jacket blank will have been pressed to and partly about the mandrel by the head I33. As the blank is placed against the mandrel by the head I33 the blade 55 is advanced and as soon as the blade reaches the dotted line position of Fig. 11 the roller-carrying plate 55 starts to advance. First the blade 55 moves to its extreme advanced position (Figs. 1 and 12) and then the rollers 252 roll the blank so that the side edges of the blank overlap. The adhesive having been applied to the blank before or as it was gathered from the magazine (as will more fully appear later) the rollers cause adhesion to take place. When the rollers 252 have advanced far enough to press the blank edges together, blade 55 recedes (see arrow adjacent 55) and after rollers 52 have reached a position slightly in advance of that shown in Fig. 13 slide 56 and plate 58 recede.

As soon as rollers 252 recede, belt I60 is brought down (Fig. 4) on the jacket; blade I6 advances to press the jacket seam against the belt and the belt is turned to strip the jacket from the mandrel, convey it to the place of discharge while holding the lapped parts together in cooperation with belt I until adhesion ha been completed; the belts throw off the jackets into trough I96.

It should be understood that suction is maintained in the fork fingers from the time the fork takes a blank from the bottom of the stack and conveys it to the head I38 until the head takes up the blank; suction is maintained in duct 13 until the jacket has been applied to the mandrel and its edges lapped thereon.

Upon the parts leaving the position shown in Figs. 1, 2 and 3, cam 3|, acting on lever 32, causes frame 226 to be moved on its pivot from the full line to the dotted line position of Fig. 8. In doing so gear 23'! is unmeshed from gear 224, cam 238 is engaged with track 239 and the blades 236, which were previously rotated to contact roller 223, are brought to vertical position and raised alongside an arm IBI of the fork 99 into contact with the bottom blank of the stack to deposit two spaced lines of adhesive on the blank. The fingers are so positioned that the lines of adhesive will register with the spaces between the furcations of the folding plate when the blank is on the mandrel. Having raised the applicator to the blank, the cam then releases lever 32 and the spring 240, assisted by the cam, restores the lever 32 to its rest position (Fig. 16) and permits gear 231 to drop into mesh again with gear 224. Gears 224 and 292 turn constantly during the operation of the machine.

By adjusting the connection between the ear M9 and the bolt 22 I, the distance between rollers 252 and 223 can be varied to adjust the thickness of the film of adhesive adhering to roller 223 and hence adjust the amount which will be taken oil on the ends of the applicator fingers.

From the foregoing description, taken in connection with the accompanying drawings, it is thought that the construction, operation and advantages of the invention will be clear to those skilled in the art.

While I have shown a practical and preferred embodiment of my invention I wish it understood that changes in the construction may be made without departing from the spirit of the invention within the scope of the appended claims.

I claim:

1. In a jacket forming machine wherein is provided a magazine for stacked blanks, a distant mandrel on which the jackets are formed, andmeans for folding the blanks about the mandrel and overlapping the sides of the blanks and cansing adhesion between the overlapped parts: the improvement which comprises blank folding and seam-lapping and pressing mechanism, said mechanism including a blank lifting and primary folding head for applying a blank to the side of the mandrel opposite that where the lapping takes place and partly folding the blank about the mandrel, and a secondary blank folding and edge lapping means comprising a blade operating against one side of the blank to carry it around the mandrel, and a roller carrying plate operating against the other side of the blank to fold it over the side engaged by the blade and press the folded parts together.

2. In a jacket forming machine: a mandrel; a reciprocating folding head; means to move said head to and from said mandrel; and means cooperating with said head to pick up a blank as the head is moved toward the mandrel and apply it to and partly around the mandrel, said last named means including a mandrel-conforming groove in the head and a yieldable suction means carried by the head and projecting into the groove thereof and adapted to engage the blank on the mandrel and recede as the head folds the blank partly about the mandrel.

3. In a jacket forming machine: a mandrel; a reciprocating folding head; means to move said head to and from said mandrel; means cooperating with said head to pick up a blank as the head is moved toward the mandrel and apply it to and partly around the mandrel, said last named means including a mandrel-conforming groove in the head and a yieldable suction means carried by the head and projecting into the groove thereof and adapted to engage the blank on the mandrel and recede as the head folds the blank partly about the mandrel; and other means operating to complete the fold and overlap the side edges of the blank on the mandrel While said head is still engaged with the mandrel.

4. In a jacket forming machine: a mandrel; a reciprocating folding head; means to move said head to and from said mandrel; means cooperating with said head to pick up a blank as the head is moved toward the mandrel and apply it to the mandrel and partly around the same, said last named means including a mandrel-conforming groove in the head and a yieldable suction means carried by the head and projecting into the groove thereof and adapted to engage the blank on the mandrel and recede as the head folds the blank partly about the mandrel; and other means operating to complete the fold and overlap the side edge of the blank on the mandrel while said head is still engaged with the mandrel, said other means including a first fold blade and a second or overfold roller and means to operate the same in timed relation,

5. In a jacket forming machine: a mandrel having a shank; a support to which said shank is fastened; two opposed slides operating at the sides of the mandrel and movable laterally of the mandrel toward and from the same; a furcated blank folding blade carried by one of said slides for movement across the face of the mandrel; a roller carrying plate carried by the other of said slides and having its rollers positioned to ride over the face of the mandrel between the furcations of the blank folding blade.

6. In a jacket forming machine: a mandrel having a shank; a support to which said shank is fastened; two opposed slides operating at the sides of the mandrel and movable laterally of the mandrel toward and from the same; a furcated blank folding blade carried by one of said slides for movement across the face of the mandrel; a roller carrying plate hinged to the other slide and having its rollers positioned to ride over the face of the mandrel between the furcations of the blank folding blade; and yieldable means urging the rollers into pressure contact with the mandrel.

JACOB CUTLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Burpee June 9, 1 914 Burpee et a1 July 25, 1916 Franke June 20, 1911 Caylor et a1 July 20, 1915 Moore Oct. 5, 1915 Number

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