US2203513A - Apparatus for and method of making containers - Google Patents

Description

w. EEEEEE RG 2,203,513

R AND AK File d Jan. 15, 1936 Y 7 Sheets-Sheet 1 EM 51775 5 f1?! te/ffi/f/myy.

June 4, w. E. AMBERG 2,203,513

APPARATUS FOR AND METHOD OF MAKING CONTAINERS Filed Jan. 15, 1936 7 sheets sheet 2 June 4, 1940. w AMBERG 2,203,513

APPARATUS FOR AND ammo OF MAKING cormmnns Filed Jan. 15. 1936 "1 Sheets-Sheet s June 4, 1940. w. E. AMBERG' APPARATUS FOR AKD' METHOD OF MAKING CONTAINERS '7 Sheets-Sheet 4 FiIed' Jan. 15, 1936 June 4, 1940. w. E, AMBERG 2,203,513

APPARATUS FOR AND METHOD OF MAKING CONTAINERS Filed Jan. 15, 1956 7 Sheets-Sheet 5 50 Z 1 E g. l9

June 4, 1940. w. E. AMBERG 2,203,513

APPARATUS FOR AND ammo OF MAKING conummns Filed Jan. 15, 1956. 7 Sheets-Sheet 6 1. ML 66 1 [Mull]: /6 /35 171 1 5 170 June 4, 1940. w. E. AMBERG 2,203,513

APPARATUS FOR AND METHOD OF MAKING CONTAINERS Filed Jan. 15, 1956 7 Sheets-Sheet 1 Patented June 4, 1940 UNITED STATES PATENT OFFICE APPARATUS FOR AND METHOD OF MAKING CONTAINERS Application January 15, 1936, Serial No. 59,218

41 Claims.

This invention relates to improvements in apparatus for making containers, and also to a new and novel method of making the same, the invention being highly desirable for use in connection with the manufacture of drinking and confection cups of paper or similar material, the cups being of the character discarded after a single usage, although the invention will have other uses and purposes, as will be apparent to one skilled in the art.

In the manufacture of containers of paper or similar material, such as paper drinking or ice cream cups, economy is one of the essentials. Economy is determined by several different factors, among which are the speed of producing containers, number of operations necessary to form a container, and the amount of stock or material which must be wasted during the manufacture of a container. Another factor is the efficiency of operation of the container making apparatus, particularly with respect to the continuity of a run without a jamming of the paper stock or the production of improperly formed containers. Of course, accurate timing of the various operating parts is necessary and the paper stock must be prevented from varying from its prescribed courseof travel both before and after cutting of the blanks from the stock.

With the foregoing in mind, it is an important object of this-invention to provide a containermaking machine which is compact and simple in construction, economical to manufacture, and capable of operating at a relatively high speed.

Another object of the invention is the provision of a container-making wherein a continuous sheet of paper stock is fed directly to the container-forming elements as distinguished from the other individual mechanisms embodied in the machine.

It is also an object of this invention to provide a container-making machine wherein container blanks are cut from a continuous sheet of material, the cutting of each blank occurring contemporaneously with the end of the sheet being grabbed by the container-forming elements.

It is also a feature of this invention to provide a container-forming machine wherein a single sheet of stock is continuously fed to the machine and directly into engagement with the forming elements, contemporaneously with the cutting of the individual blanks from the sheet.

A further feature of the invention resides in the provision of a container-making machine wherein a strip of stock is continuously fed into the machine, glue applied thereto, the stock being fed directly through the forming elements, a blank cut from the stock rearwardly of the forming elements, a container formed and ejected from said elements in time for the approaching edge of the stock sheet to be picked up by said elements.

It is a further object of this invention to provide a machine of the character set forth herein which need embody only a single pair of feed rolls between and by which the stock may be advanced or moved through the machine.

It is also an object of the invention to provide a novel container-receiving mechanism for use in conjunction with a machine of the character described herein.

Another aim of the invention is the provision of a machine of the character described which minimizes the stock waste in the making of a container.

A further object of the invention is the provision of a new and novel method of making a container.

While some of the more salient features, characteristics and advantages of the present invention have been above pointed out, others will become apparent from the following disclosures taken in conjunction with the accompanying drawings, in which:

Figure 1 is a fragmentary side elevational view, with parts omitted, of a machine embodying principles of the present invention, illustrating more specifically the general drive of the machine.

Figure 2 is an enlarged fragmentary top plan view of the machine.

Figure 3 is an enlarged fragmentary vertical sectional view, illustrating the container forming unit and trimming cutter, taken substantially as indicated by the line III-III of Figure 2, with the trimming cutter appearing below the section line of Figure 2 theoretically rotated 90 degrees so that it may be shown in section in Figure 3.

Figure 4 is an enlarged fragmentary sectional view through the forming mandrel, taken substantially as indicated by the line IV-IV of Figure 3.

Figure 5 is a transverse vertical sectional view through the structure of Figure 4, taken substantially as indicated by the line V-V of Figure 4.

Figure 6 is an enlarged fragmentary vertical sectional view, taken substantially as indicated by the line VI-VI of Figure 2.

Figure 7 is substantially a diagrammatic plan view of the die or plate cutter in the bed of the machine.

Figure 8 is a diagrammatic plan view of the movable cutting knife operating in conJunction with the structure of Fig. 7.

Figure 9 is an enlarged fragmentary vertical sectional view, taken substantially as indicated by the line 13-43 of Figure 2, illustrating the receiving mechanism for the finished containers.

Figure 10 is a fragmentary plan view of the structure shown in Figure 9.

Figure 11 isa fragmentary vertical sectional view, taken substantially as indicated by the line XI-XI of Fi ure 10.

Figure 12 is an enlarged fragmentary vertical sectional view illustrating the air and vacuum control means, taken substantially as indicated by the line XIII-XII of Figure 2.

Figure 13 is a fragmentary plan sectional view, taken substantially as indicated by the staggered section line XIII-XIII of Figure 12.

Figure 14 is a fragmentary transverse vertical sectional view, taken substantially as indicated by the line X[VX[V of Figure 13.

Figure 15 is a diagrammatic view illustrating the initial steps in the making of a container.

Figure 16 is a somewhat imaginary view, illustrating a further step in the making of a container and showing how the container would appear if completely formed before the excess shock was trimmed from around the mouth of the container.

Figure 1'7 is a view in elevation of the finished container;

Figure 18 is a plan view of the finished container.

As shown on the drawings:

In the illustrated embodiment of this invention, a machine isshown and described capable of making a container in the form of a paper drinking cup, or ice cream cup, of conical shape, the container being made from a single blank of stock. While the completed container is of substantially true conical shape and is illustrated with no special formations therein, it will be understood that by equipping the machine with suitable forming dies or similar mechanism to add a further operation to the making of the container, the apex of the conical container may be blunted or otherwise shaped, and a downwardly turned drinking rim may be provided around the mouth of the container, if so desired. It will be further appreciated that the invention is not strictly limited to the makingof a paper drinking cup of conical form, but diflerent shapes and styles of containers may be provided with the use of differently shaped forming mandrels and dies.

TH]: Mlrrnon m Gunman.

Briefly, the method of making a container as embodied in the present invention includes the continuous feeding of a strip or sheet of stock directly'to the container forming elements. During the course of its travel, spaced patches of adhesive are provided on the sheet of stock, and contemporaneously with the forward end of the sheet being gripped by the forming elements, a blank is cut from the sheet. This blank is formed into a container by the forming elements, after which it is ejected into a container-receiving mechanism, in time for the forming elements to grip the approaching edge of the stock sheet contemporaneously with the cutting of the next blank. During this procedure, the feeding of the stock sheet is not interrupted.

The general steps of the method are best illus-'- trated in Figures 15, 16, 17 and 18. In these figures, the stock sheet, blank and container, respectively, are illustrated in full lines. while the various operating units co-jointly making up the machine are illustrated diagrammatically in dotted lines.

An indefinitely long strip I of stock from any,

suitable source, such as a roll I (Figure 1), is continuously advanced by a feeding unit generally indicated by numeral I. 'Ihe stock is preferably a paper of the general character suitable for paper drinking cups, ice cream cups and the like, and it may be rendered liquid-proof to a desired extent either initiallyor after the forming of the container, as may be deemed most feasible.

During the course of its travel, in this instance prior to the feeding mechanism I, a gluing unit generally indicated by numeral I, applies spaced dabs or patches of glue I to the strip I. Continuing its source of travel, the forward edge of the strip is eventually gripped by a forming unit generally indicated by numeral I. Preferably very shortly before the edge of the strip is gripped, a cutting unit generally indicated by numeral I severs a blank I from the strip, the cutting operation being relatively quick and sharp so as not to interfere with the continuous feed of the strip. The line of cut is such as to include a rearwardly extending diagonal part I terminating at one end of a forwardly extending arcuate part III. This form of cut provides a tab II on the forward end of the blank which is wound around the apex of the cup after the same is formed.

The forming unit I preferably does not stop motion during any part of the operation, and accordingly the relative units of the machine must be properly timed, since certain of these units operate at a faster speed than do the others.

whereupon the severed blank I is wound around a mandrel in the forming unit to provide a conical cup I2.

During the winding of the blank into cup form, the surplus edge portion II of the blank is trimmed along'a line indicated at II by a trimming unit II. To this extent, Figure 16 is imaginary in that it discloses a formed cup having the excess marginal portion II thereupon, but this excess marginal portion is trimmed off during the forming of the blank into cup shape, in the preferable embodiment of the machine.

It will be noted that the trimming line II terminates substantially in the middle or in an intermediate portion of the arcuate part II of the line or cut so that a part of this arcuate cut II will appear in the finished cup as seen in Figure 1'1 in such a location as not to interfere with or lessen the capacity of the cup. ,In the finished cup, marginal portions of the blank are overlapped, as indicated at I I in Figures 1'! and 18, and one of these overlapped marginal portions carries the aforesaid patch of adhesive I which adheres to the other margin to hold the cup in shape. A suitable heating element is preferably disposed beneath the forming unit so that during the forming and immediately before the cup is ejected from the forming unit, the 'adhmive will be subjected to heat so as to dry sufiicientlyrapidly for high speed production, since each cup is formed and discharged in time for the forming unit 9 to pick up the forward edge of the approaching stock strip I.

TnxmcmiumGmr.

With reference especially to Figures 1 and 2, it will be seen that the machine includes a suitable frame I! having a bed foundation I9 thereupon and including a lower deck 29. On the bed foundation I9, a bed plate 2I is disposed at one side of the course of travel of the strip I. Adjacent thebed plate 2I, a pair of complemental vertically extending side plates 22 having laterally extending base flanges bolted to the bed foundation I9, roughly define the course of travel for the stock strip I (Figures 2 and 6).

Disposed adjacent the frame It of the machine (Figure 1), is a cradle 23 for carrying the aforesaid stock roll 2, this cradle carrying a pivotal lever 24 having a free roll 25 on the outer end there of to act as a tensioning member for the strip I. Adjacent the upper portion thereof. the frame II also carries a laterally extending arm 28 equipped with a free guiding roll over which the strip I passes so that the strip will enter the working parts of the machine at the proper angle.

Mounted on the deck 29 of the frame is a main drive unit, such as an electric motor 21, connected by a belt 28 to a main drive pulley 29 carried on a transversely extending shaft 30 journaled as at M in Figure 2. Also carried on the shaft 99 is a gear 32 indirectly driving a pinion 32 disposed obliquely therebeneath and carried on a stub shaft 34 through a pinion 930 on a stub shaft 341:, both stub shafts being journaled in the bed foundation I9. This stub shaft 34 carries a sprocket wheel 35 connected through a suitable chain 36 to drive another sprocket wheel 31 carried on a shaft 38 suitably joumaled in an upstanding bearing bracket 99. This arrangement is preferably such that the sprocket wheel 31 together with its shaft 38 will be driven at four revolutions to one of the drive pulley 29, this being a highly satisfactory operating ratio.

Caried by a pair of spaced supporting arms 40 projecting rearwardly from the bed foundation I9 is the aforesaid gluing mechanism generally indicated by numeral 4.

The. feeding mechanism, generally indicated by numeral 9, is carried by the side plates 22. A blank cutting mechanism, generally indicated by numeral 1, is also carried by the side plates 22.

As seen best in Figure 2, a bracket H is bolted to the bed plate 2| and is provided with a pair of spaced supporting arms 42 extending obliquely upwardly in position to support the aforesaid container-forming mechanism generally indicated by numeral 5. Between these arms, a bearing bracket 49 extends outwardly in position to support shafting to be later described in connection with the forming mechanism, this bearing bracket 43 being bolted to a depending front face 44 of the bracket 4| (Figures 2 and 3). The spaced arms 42 also carry the aforesaid trimming mechanism generally indicated by numeral II.

Mounted on the bed plate 2I in advance of the bracket H is an air and vacuum control mechanism generally indicated by numeral 45, which will be further described later herein.

Mounted on the side of the machine frame and disposed directly opposite the container-forming mechanism 5 is a container-receiving unit generally indicated by numeral 46 to be further described herein.

The stock-feeding With reference particularly to Figures 2 and 6, it will be seen that the feed mechanism for the present invention need only embody a single pair of feeding rolls, an upper roll 41 carried on the aforesaid shaft 99 driven by the main drive pulley 29, and a lower feed roll 49 carried on a shaft 49. Outside the track defined by the two side plates 22, the shaft 99 also carries a gear 59 which is meshed with a similar gear 5| carried by the shaft 49, whereby the lower feed roll is driven by the shaft ill but in the opposite direction.

Each of the side plates 22 is apertured as at 52 to accommodate a floating bearing 59, in which bearings the shaft 49 is journaled. A stud bolt 54 extending vertically through the respective side plates beneath the openings 52 has a spring 55 associated with its inner end in an adjustable manner, these springs supporting the floating bearings 53 and providing suitable pressure for the proper feeding of the strip I through the machine. Of course, the springs may be adjusted in an obvious manner to vary this pressure, as may be required.

The gluing mechanism The gluing mechanism is best seen in Figures 2 and 6. I In this instance, the mechanism includes a glue container 59 having a removable cover and supported by the aforesaid arms 49. The'forward wall of the glue box 56 is sloping and the stock strip I passes upwardly beneath this wall from the aforesaid guide roller carried on the arm 26 (Figure 1) Adjacent the forward end of the glue box and therebeneath is a suitable heater 51, which preferably contains an electric heating element and which may be secured to the frame of the machine in any desirable manner. This heater maintains the glue in the box 56 in a suitable molten state for application to the stock strip I.

Inside the glue box is a transverse shaft 59 journaled in the side walls of, the box. This shaft carries a glue-dipping wheel 59 thereon having a pair of opposed transversely arcuate slots 60 therein. The dipping wheel 59 extends through a suitable slot in the cover of the glue box in position to directly contact a glue applying wheel 6| of substantially identical construction. The opposed slots 50 in the applying wheel 5| are so arranged as to coincide with the slots 50 in the dipping wheel 59, so that in the region of these slots no glue will be picked up by the dipping wheel and consequently no glue transferred to the applying wheel. Of course, the applying wheel contacts the stock strip I passing thereby and applies the aforesaid patches 5 of glue (Figure 15) to the stock strip, the arcuate form of the slots 50 in both the wheels 59 and BI providing the arcuate forward and rear edges on the patches 5.

The applying wheel SI is mounted on a transverse shaft 62 journaled in suitable bushings projecting from the side plates 22. Outside the glue box, the shaft 58 carries a gear 92 which meshes with a similar gear 64 carried by the shaft 52 outside the respective side plates 22, whereby the shaft 58 is driven by the shaft 52. The shaft 52 is driven by the main drive pulley 29 through the shaft 39 by means of a sprocket wheel 95 carried on the shaft 30 and connected by means of a suitable chain 55 to another and larger sprocket wheel 61 carried on the end of the shaft 62.

To properly position the stock strip I for the application of the glue, a transverse freely rotatable guide roll 88 is provided, this guide roll being mounted upon a shaft 68 journaled in the side plates 22. It will be noted that the shaft 88 is disposed higher than the contact points of the feeding rolls 4! and 48, so that the stock strip is made to continue its obliquely upward line of travel until after the glue patches 5 have been applied thereto.

Preferably, a suitable backing is provided for the applying wheel II. In this instance, a fixed pivot shaft 18 (Figure 6) is secured to one of the side plates 22 in any suitable manner. An arm II is pivotal relatively to the shaft 18 and may .be fixed in any position of adjustment by means of a set screw 12 engaging the shaft to the arm. On its lower end, the arm ll carries a free roller ",jud the stock strip I must pass between this roller and the glue applying wheel 5i. Adjacent,

the arm II, a boss ll isprovidedon the respective 20 side plates 22, which boss contains an adjustable pin 18 to prevent the raising of the arm ll beyond a predetermined point. In the event one of the slots il in the face of the applying wheel 6| is positioned adjacent the roller 18 when it is desired :5 to feed a new strip of stock through the machine,

the pin Ii effectively prevents an operator from raising the roller 13 too far and breaking the stock strip inside the notch in a slot 88.

As stated hereinabove, the entire feeding of the stock strip is accomplished by the aforesaid feed rolls 1 and 48, and since the glue patches 5 are applied to the stock strip in advance of these feeding rolls, the upper roll 41 is stepped down or reduced, as indicated at Ii, so as not to contact the stock strip in that region carrying the glue patches 8.-

The blank-cutting mechanism With reference to Figures 2, 6, 7, 8 and 9, itv

will be seen that the cutting mechanism is supported by a transverse yoke or plate 11 bolted to the upper edges of the side plates 22. As seen in Figure 6, each of these side plates is shaped as indicated at 18 to provide a track in which a cutter carrier 18 is vertically reciprocable. A pair of elongated bolts 88 are threaded engaged in the upper end of the carrier and extend freely through suitable apertures in the yoke 11. Between the head of each of these bolts and the upper surface of the yoke Tl, a coil spring 8| is positioned, and these springs normally hold the carrier 18 in its uppermost position.

On the lower end thereof, the carrier 19 is provided with an enlarged head 82 to the under'face of which is attached a knife 83 positioned as seen in Figure 8 relatively to the stock strip I. This knife is provided with a straight cutting edge 9a disposed rearwardly obliquely to the stock strip, and an arcuate cutting edge lid to provide a line of cut as defined hereinafter in connection with the showing in Figure 15. The rear edge of the knife is preferably beveled as at 84 to provide a sharp cutting edge. on the underface thereof, the forward portion of the knife is preferably upwardly beveled as indicated at 85 (Fig. 6), so that only a single cutting line is provided for contact with the stock strip l.

Of course, an understructure must be provided to work in conjunction with the knife 83. This structure includes a pad member 88 disposed upon the bed foundation l8 and bolted to the side plates 22. Mounted upon the pad member 88 in any suitable manner is a bed plate 81. A pair of dies 88 and 88 are bolted to the bed plate 81 as indicated at 88 (Figure 7), and these two members together define a cutting edge similar,

to that upon the knife 88. The forward edges of the elements 88 and 88 are rearwardly beveled as indicated at 9| in Figure 6. The die member 88 is dovetailed in the bed plate 81 as indicated at 82, and immediately adjacent the dovetail connection, a pair of bolts 93 are firmly secured in position, the shanks of these bolts abutting the rear edge of the die 88 so that a very fine adjustment of the die may be made relatively to the bolts 90 upon the loosening of the bolts 93.

The structure for reciprocating the cutter carrier 18 includes a transverse shaft ll journaled in the side plates 22. Connected to each end of this shaft outside the respective side plates is a crank arm 85 carrying a roller 86 on the free end thereof. Each of the rollers 98 rides upon the surface of a cam 81 which is preferably cylindrical in form with the exception of a relatively narraw hump 88 projecting therefrom. The dam members are carried by the aforesaid shaft 38. On each side thereof, the carrier 18 is provided with a pair of outwardly extending lugs 99, shown in dotted lines in Figure 6, and between these lugs is an operating element I08 carried by the respective crank arm 85.

It will thus be seen that when the cam projection 88 elevates the free end of the crank arm 95, and due to the narrowness of the projection 88 this elevation is substantially momentary, the carrier 18 is lowered causing the knife 83 to sever a blank from the forward end of the traveling stock strip l. Due to the speed with which the out is made, the continuous feeding of the stock strip I need not be interrupted. In order to prevent the forward edge of the stock strip rising with the return movement of the knife 83, a presser member is provided to the rear of the knife. This member includes a double headed pin IOI freely movable in the head 82 of the carrier 19. A spring member I82 seated in a suitable socket in the head 82 urges this pin downwardly at all times. Therefore, upon the cutting stroke, the lower head of the pin will strike the stock strip together with the cutting knife, but upon the return stroke, the cutting knife will reach its elevated position before the lower head of the pin leaves the stock strip. Of course, due to its continuous feed, the stock strip will buckle momentarily behind the presser member II, but this buckling will not interfere with the operation of the machine, the stock strip straightening out in usual form immediately upon the raising of the presser member.

Container-forming mechanism The container-forming mechanism or unit, generally indicated by numeral 6, is best seen in Figures 2, 3, 4 and 5. As explained above, the forming unit is driven through the sprocket 85, the chain 36, the sprocket 81, and shaft 38 (Figure 1). With reference to Figures 2 and 3, it will be seen that theaforesaid arms 42 and the bracket 4| support a shaft I03, and the shafts I82 and "are connected by a universal joint I, since the shaft I88 is disposed at an angle to the shaft 38. Each of the arms 42 is arranged to accommodate a ball bearing assembly I05 disposed in a bearing housing I I6. On the outer end of the shaft is a forming mandrel Ill.

Beneath the depending apron It on the bracket 4|, another supporting member I88 is disposed, this supporting member having a pair of arms I88 projecting therefrom each arranged to accommodate a ball bearing assembly Ill disposed In a bearing housing III substantially as above described. These two bearings III adequately journal another shaft II2 disposed at an angle to the aforesaid shaft I03, the shaft II2 carrying on its outer end a cone member I I3 which acts as a rider or presser roll in connection with the mandrel II'I, these two elements being so disposed as to grip the forward end of the stock strip I therebetween just prior to the severance of a blank from the strip by the cutting mechanism I. The shaft H2 and cone II3 are driven by means of a gear II4.keyed to the shaft I03 and a gear Ili keyed to the shaft II2.-'These gears are of the same size so that both the mandrel and cone are driven at the same speed but in opposite directions.

In order to provide the proper pressure between the cone and mandrel, the support I03 is slidably mounted on a main support II3, it being held in proper position relatively-to the support II3 by means of bolts III which are engageable in elongated apertures in the plate H3, not shown in the drawings. When the bolts III are loosened, a bolt and lock nut adjustment IIO may be utilized to vary the pressure of the cone against the mandrel.

The specific construction of the mandrel I0! is best seen in Figure 4. The body portion of the mandrel is provided with an external elongated double slot II3 communicating with an interior transverse bore I closed on the opposite side of the mandrel by a plug I2I. The shaft I03 upon which the body portion of the mandrel is threaded is hollow, as indicated at I22, and the bore I23 communicates with the hollow I22 by means of a relatively small passage I23 in the shaft. .The rear or larger end of the mandrel is formed by. means of a hardened steel cap I24 bolted to the body portion as indicated at I23, this cap being provided with a knife-edge to cooperate with the trimming mechanism I3 to be later described.

At the forward end thereof, the mandrel is completed by a conical tip I23 having an elongated-hollow shank l2'l'freely slidable in a sleeve I23 threaded into the body of the mandrel. The rear end of the shank is provided with a fixed collar I23, and between the collar and the sleeve a coil spring I normally urges the tip into tight association with the mandrel vbody.

To hold a severed blank in tight association with the mandrel so that it will twirl therearound, vacuum is provided in the double slot I I! so that the edge of the stock strip just prior to the severance of a blank is not only engaged between the mandrel and cone, but is also held to the mandrel by suction. With the continued rotation of the mandrel and cone, the blank immediately after its severance will be wound around the mandrel into container form, the respective parts being so timed in their movement that after a container is completed and ejected from the mandrel the double slot H9 will be in position to lie over the edge of the stock strip.

With reference to Figure 3, it will be seen that the bracket 43 is provided with abearing holder I3I containing a pair of bearing members I32 within which the shaftl03 is rotatable. Inside the holder I3I, the shaft I03 is provided with a transverse aperture I33 adapted for communication between the hollow I22 in the shaft and an opening I34 in the holder. A tube I35 threaded into the holder adjacent said opening provides communication from the air and vacuum control generally indicatcd by numeral 45.

In operation, a vacuum is first set up in the tube I 33 and consequently in the double slot II! to hold the severed blank on the mandrel. After the blank has been wound around the mandrel and the container formed, compressed air is sent through thetube I33 in lieu of the vacuum, and this compressed airnot only contacts the interior of the container through the double slot II3, but also forcibly projects the mandrel tip I23 against the action of the spring I30 to provide a positive push against the formed container, and compressed air will also contact the container adjacent the point thereof through lateral passages I33 in the mandrel 3. Die container is thus forcibly expelled from the mandrel into the receiving mechanism 43 to be later described.

, To permit the ready expulsion of the container from the mandrel, the cone H3 is moved rearwardly slightly at the time of expulsion, so that the cone H3 is free from engagement with the container. The shaft I I2 together with the gear II5 may be moved axially rearwardly relatively to the bearing IIO. A coil spring "I disposed between the outer bearing housing III and a bushing assembly I33 in abutment with the gear II5 normally urges the cone II3 into engagement with the mandrel I through the stock strip. However, at the outer end thereof the shaft H2 is provided with a collar I33 around which a flange bushing I40'is disposed. Opposed pins I4I extend into the bushing and these pins are engaged by the forked ends I 42 of a lever I43. With reference to Figure 2, it will be seen that this lever is pivoted, as at I44, to a boss extending from the side of one of the arms 42 of the bracket H. The lever extends rearwardly into engagement with a cam I43 carried by the main drive shaft 30, and a spring I43 holds the lever in engagement with the cam. The cam is provided at one side thereof with a sloping wall or cam surface which periodically urgesthe rear end of the lever in a direction towards the stock strip, thereby causing the cone shaft II2 to be retracted and disengaging the cone II 3 from the container formed on the mandrel, permitting free ejection of the container from the mandrel.

To insure the adequate drying'of the adhesive patches before the container is ejected from the mandrel, a heater I" which may be similar to the aforesaid heater 5'', is disposed adjacent the mandrel I0'I, as seen best in Figure 6.

Trimming mechanism As stated hereinabove, an excess margin of stock is occurrent on that part of a severed blank forming the mouth or open larger end of the conical container. 01. course, this excess margin must be trimmed from the blank, and this operation preferably occurs during the winding of the blank around the mandrel I01.

The trimming mechanism is shown best in Figures 2 and 3, the mechanism being in its nor-- mal position in Figure 2, but being shown as revolved 90 degrees out of its normal position in Figure 3, for the purpose of clarity. This mechanism includes a shaft I43 carried in suitable bearings held by the arms 42 of the bracket H. The shaft carries a gear I43 on the outer end thereof which is in mesh with a similar gear I30 carried by the shaft I03,this latter shaft driving the trimming mechanism. On the forward end of the trimmer shaft I 43 is a; cutting wheel I5I operating in conjunction with the hardened cap I24 on the mandrel.

A hollow sleeve I32 is keyed to the trimmer Air and vacuum control The control means for alternately providing a suction and an air blast in the mandrel I01 is bestseeninFiguresZ,12,13 and 14.

The rear end of the tube I3! is connected, as

at III, to a block I mounted on a pad I" seated on the bed plate ii. The tube communicates inside the block with a transverse pe III which in turn communicates with a pair of spaced vertical es It! and I, respectively. The passage III communicates with a vacuum tube I OI connected at one end to the block and at the other end to any suitable source of vacuum. In similar manner, the passage Iil is in communication with an air pressure tube The block I" is internally bored longitudinally thereof to accommodate a pair of spaced plungers Ill and I, respectively. These plungers are similar in construction, and each is urged outwardly by a coiled spring I" disposed in the respective bore in advance of the plunger. The phmger III is provided with a vertical passage I" therethrough for communication with the passage III in the block, and the plunger I is provided with a similar passage I 61 for communication with the block e I OI.

Of course, these plungers function as valves,

and in the drawings the plunger Ill is shown in its innermost position to establish communication between the tube I 3! leading to the mandrel and the vacuum line I"; the plunger I 46 being retracted or in its outermost position to close communication between the tube Ill and the air pressure line III.

The plungers I63 and I are controlled by a pair of cams Ill and I09, respectively, both mounted upon the aforesaid main driving shaft 30. Adjacent each cam, a suitable bearing block "I is provided. For contacting the cam, each of the plungers I" and I is provided with a wheel "I and I12,respectively, on the outer end thereof. It will be noted that the vacuum control cam III is provided with a cam surface I13 in excess of half its circumference so that the vacuum necessary to hold the container on the mandrel is present the major portion of the time that the container is on the mandrel. 0n the other hand, the air pressure control cam I" is.

provided with a relatively short or narrow' cam surface I14 to provide substantially momentary air pressure for the ejection of the container.

- Container-receiving unit inabove by numeral 46 includes a bracket I15 bolted to the frame ll of the machine and provided with a pair of outstanding bosses I16 to adjustably hold a supporting rod I11. Attached to this rod I11 is an arcuate supporting stirrup I10 welded or otherwisesecured to arecelving cylinder I 19. This cylinder is so positioned that a finished container is blown directly from the mandrel I01 into the cylinder, and the cylinder is of such a size as to nicely receive the completed containers in stacked relationship. In the'upper rear portion thereof, the cylinder is provided with an elongated slot- II. therein, through which an operator may insert a finger to remove a desired number of finished cups through the open end of the cylinder. At the receiving end thereof, the cylinder is provided with a pair of opposed toothed members Iii positioned so that their toothed edges are spaced apart a distance slightly less than the diameter of the mouth of a container. Accordingly, when a container is blown into the cylinder, the upper rim thereof will flex slightly in passing-the members III and expand behind certain of the teeth so that the container cannot leave th cylinder through theend which it enters.

Adjacent its forward end, the cylinder is provided with a slidable sleeve It! slotted on the underside thereof, as indicated at Illa (Figure 11) ,so that the stln'up I18 does not interfere with the reciprocation of the sleeve, but will, together with the inner edges of the members I ll, serve to limit the forward movement of the sleeve.

The sleeve carries a pair of spaced bosses I" projecting therefrom, and in the rearmost of these bosses, the end of a rod I I4 is threadedly engaged, this rod'being reciprocable with the sleeve through a, bearing boss III (Figure 2) carried by the cylinder. Disposed around the rod I between the boss I and a collar I 86 on the rod, is a coil spring I81 normally urging the sleeve to its rearmost position, opposite to that seen in Figure 11. Immediately in front of the boss I", the rod is provided with a loose shock absorbing sleeve I 88 of rubber or some equivalent material.

At the forward end thereof, the sleeve carries a barb I" extending radially inwardly sufliciently so that the larger margin of a container must flex in passing over the barb when the container is blown into the cylinder. The mechanism is so timed that contemporaneously with the ejection of a cup from the mandrel I01, the sleeve together with the barb I89 is moved forwardly towards the oncoming cup against the action of the spring I81, and when the moving force is released, the spring I81 forcibly returns the sleeve to its rearmost position, thereby pulling the received cup into the cylinder in stacked relationship with the cups previously received.

The mechanism for actuating the sleeve I82 includes a bell crank I90, pivoted as at I 8i on the upper end of the bracket I15. This bell crank is provided with an outstanding head I 92 disposed between the aforesaid brackets I83 on the sleeve, and also a head I93 for engagement with an actuating cam I 94- carried on the outer end of the main drive shaft 30. This cam I 9| is provided with an oblique cam edge I 95 for periodically pivoting the bell crank I to move the sleeve I82 against the action of the spring I81 to stack the cups and urge them towards the rear end of the receiving cylinder I19 in the manner above described.

\ Operation 4 In view of the detailed descriptions of th operation of the individual units given hereinabove, only a general operation of the machine need now be explained.

At the outset, a roll 2 of paper is mounted in the cradle 23 and the free end of the stock is threaded through the machine up to the cutting mechanism. A cut is made by this mechanism and the piece cut off thrown away. The machine may thenbe started and operated until the roll gives out. In threading the stock strip through the machine, the set screw I2 may be loosened to permit the downward shifting of the backing roller I3 away from the glue applying wheel 6| until the paper is put therebetween, and the bolt adjustment 54 permits a temporary dropping of the lower feeding roll 48 in order to insert the paper between these rolls.

When the machine is started, the feeding rolls 4'! and 48 pull the paper from the roll 2 through the machine. As it passes the glue applying wheel 6|, spaced patches 5 of glue or other adhesive are applied to the stock strip as seen in Figure 15. The paper strip is then fed until the forward edge thereof is engaged between the forming mandrel I01 and the cone I I3, and preferably just after the paper is gripped by these elements and held to the mandrel by the vacuum contemporaneously established by the cam I68, the cutter control cam 91 drops the carrier 19 and severs a blank from the strip. This blank is wound around the mandrel into container shape, the heater I" drying the adhesive, the trimming cutter I5I trimming the excess margins from the blank during the winding operation, and as soon as the container is formed, the pressure control cam I69 provides air pressure to blow the finished container from the mandrel into the receiving cylinder I19. Just before the applica tion of the air pressure, the cone H3 is moved away from engagement with the container. In the meanwhile, the cam I68 has released its respective plunger I63 so that the vacuum has been cut off. Contemporaneously with the reception of a completed container by the cylinder I19, the sleeve I82 together with its barb I89 is reciprocated so as to move the completed container towards the rear end of the receiving cylinder.

The operation of the machine is very accurate and very rapid, it being quite feasible with this machine to produce containers in excess of 100 per minute. The timing arrangement of the machineis preferably such that one revolution of the shaft 30 and accordingly one revolution of the feeding rolls 41 and 48, is sufiicient to advance the stock strip sufficiently for the cutting of a container blank. On the other hand, the drive arrangement rotates the forming mandrel I01 at a'higher rate of speed. A satisfactory ,ratio between these parts is 4 revolutions of the mandrel to one revolution of the feeding rolls to produce a container.

An important feature of the invention resides in the fact that the continuous strip of stock is fed directly into the forming unitand is engaged between the mandrel and cone substantially at the same time a blank is severed from the strip. Accordingly, there is no opportunity for the blank to move out of its proper position prior to the forming of the container.

From the foregoing, it will be apparent that I have provided a container-making machine which is relatively simple in construction, minimizes the waste of material, and which need utilize but a single pair of feeding rollers to accurately produce containers at a high rate of speed.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted art.

- I claim as my'invention:

1. In a container making machine, a forming mandrel, a similarly shaped roller in such proximity thereto that a blank may be gripped there between, feeding means arranged to deliver a strip of stock directly to said mandrel and roller, driving means to continuously operate said inandrel and roller at a greater speed than said feeding means, and cutting means between said feeding means and said mandrel arranged to sever a blank from said strip contemporaneously with the time when the forward end of said strip is gripped between the mandrel and roller. 7

2. The method of making a container, including substantially continuously feeding a strip of stock into forming position, severing a blank from said stock contemporaneously with the arrival of the forward edge of said strip at forming position, thereafter forming said blank into container shape, and ejecting the formed blank from forming position in time to begin another forming hereon otherwise than is necessitated by the prior operation with the advancing edge of said strip.

3. The method of making a container, including feeding a strip of stock directly to a forming location, starting to form a container, contemporaneously severing a blank from said strip along a line of cut having a concave arcuate portion, thereafter completing the forming operation, and contemporaneously trimming a margin from said blank along a line of cut terminating intermediate the ends of said arcuate portion.

4. A container making machine wherein feeding means deliver stock to forming means which shape a container and forcibly eject it into a stationary receiver for finished containers, characterized by a reciprocable member adjacent the receiver having a barb so disposed that a container margin must flex in passing said bar during the ejectory 'flight of the container, said member pushing the container back into the re-' ceiver on a movement in that direction.

5. A container making machine wherein driving means actuate forming and ejecting means which latter eject finished containers into a stationary receiver cylinder, characterized by a reciprocable element associated with said receiver and having a projection extending in the path of ejected containers so a portion of a container must flex during the ejectory flight of the container to pass said element, and actuating means connected to said driving means to operate said element to successively urge containers towards the rear end of said cylinder.

6. A container making machine wherein continuously rotating forming mechanism successively shapes and forcibly ejects finished containers into a receiving cylinder in'stacked relationship, characterized by ratchet-toothed means associated with said cylinder and positioned to extend in the path of an ejected container sufficiently to cause a margin of the container to flex in passing thereby, and said cylinder being open-ended and having a slot therein to aid the removal of a stack of containers from the rear end of the cylinder.

'7. A container.making machine wherein forming mechanism successively forms andfforcibly throws oif finished containers into a receiver member, characterised by ratchet-toothed means positioned sufliciently in the path of an ejected container to catch the flying container and cause amarginofthecontainertoflexinpassingthereby, and means for periodically urging the received containers away fromthe receiving end of said member.

8. A container making machine wherein driving means operate forming means capable of forcibly ejecting a finished container into container receiving means, detent means associated with said receiving means and disposed in the path of .an ejected container to catch the flying containerand cause a flexing of a margin of the container in passing thereby, and pusher means operable by said driving means to periodically urge received containers towards the opposite end of said receiving means. 7

9. In a container making machine wherein driving means actuate forming means capable of forciby ejecting a finished container into container receiving means, detent means associated with said receiving means and disposed in the path of an elected container causing a flexing of a margin of the container in passing thereby. ciprocable means arranged to urge received containers towards the opposite end of said receiving means, resilient means tending to hold said reciprocable means in one direction, and cam means operable by said driving means to periodically actuate said reciprocable means against the action of said resilient means. I

10. In a container making machine wherein driving means continuously actuate forming mechanism arranged to form containers and forcibly eject finished containers into container receiving means, detent means associated with said receiving means to prevent containers leaving the receiving end of said receiving means, and pusher means periodically actuated by said driving means to urge containers towards the opposite end of said receiving means.

11. In a container making machine wherein driving means actuate forming mechanism arranged to form containers and forciby eject finished containers into receiving means for holding finished containeradetent means associated with said receiving means to prevent containers leaving the receiving end of said receiving means, and pusher means periodically actuated by said driving means to urge containers towards the opposite end of said receiving means, said pusher means being actuated periodically by cam mechanism connected with another part of said mechanism to be driven by said driving means.

12. In a cup making machine wherein feeding means advance a stripof stock from which cutting means sever blanks which are successively formed into cups and ejected into a receiving container, a reciprocable member adjacent said container having a barb positioned in the path of an ejected cup so that a cup margin must flex in passing said barb, means to operate said reciprocable member whereby said cup is pushed back into said container upon a movement of said member in the proper direction, and fixed ratchet means associated with the forward end of said container with rearwardly disposed teeth also arranged to cause a flexing of a cup margin in passing thereby.

- 13. In a cup making machine wherein finished cups are successively and forcibly ejected by a blast of air into a receiving apparatus which catches and automatically stacks the cups in nested relationship, feeding means including a more pluralityofrollsfor advancingastripnfstock through the machine, gluing mechanism including a notched roll for applying spaced dabs of glue to the strip. certain of said feeding rolls being shaped so as not to contact the applied dabs of glue when the strip passes thereby, cutting means arranged to sever blanks from said stripwiththelineofcutbetweensaiddabs of glue, forming means arranged to shape a blank into cup shape, andelector mechanism to discharge a cup from the forming means.

14.,In a machine of the character described,

forming means including a cup forming mandrel v forwardedgeofsaidstripisinpositiontobe engaged by said mandrel and said presser roll. 15. In a machine of the character described,

forming means including a cup forming mandreland a presser foil for forming a cup from a blank of flexible material, means associated with said mandrel to hold a part of a blank to be formed against the mandrel, said presser roll being movable axially to engage a blank on said mandrel and movable out of engagement with the cup when formed to permit ejection of the cup and the reception of a new blank. means associated withsaid mandrel to forcibly elect a finished cup therefrom, feeding means arranged to feed a stock strip directly between said mandrel and presser roll, cutting means positioned and timed to sever a blank from said strip when the forward edgeofsaidstripisinpositiontobeengaged by said mandrel and said presser roll, said cutting meansbeingshapedtoseversaidstockstrip transversely completely thereacross along a line other than straight, and said cutting means being timed to sever the blank just prior to the start of the forming operation.

16. In a machine of the character described, forming means including a cup forming mandrel and a presser roll for forming a cup from a blank of flexible material, means associated with said mandrel to hold a part of a blank to be formed against the mandrel, said presser roll being movable axially to engage'a blank on said mandrel and movable out of engagement with the cup when formed to permit ejection of the cup and the reception of a new blank, means associated with said mandrel to forcibly eject a finished cup therefrom, feeding means arranged to feed a stock strip directly between said mandrel and presser roll, gluing means in advance of said forming means to apply glue to said strip in spaced areas, and cutting means positioned and timed to sever a blank from said strip by severing the strip in the space between successive glue areas when the forward end of said strip has entered between the mandrel and presser roll.

1'1. In a machine for making conical paper cups, feeding means arrangedto feed a strip of stock to a forming location, gluing means arranged to apply spaced areas of glue to said strip, cutting means arranged to successively sever blanks from the strip by cutting the strip crosswise between successive glue areas along a line other than straight acres the strip, and a forming mandrel of conical shape positioned adjacent the path of said stock stripat'the forming location to grip the end of the strip and wind the blank into a cup having an apex substantially at an intermediate part of the leading edge of the blank.

18. In a machine for making conical paper cup feeding means arranged to feed a strip of stock, gluing means arranged to apply spaced areas of glue to said strip, cutting means arranged to successively sever blanks from the strip by cutting the strip crosswise-between successive glue areas along a line other than straight across the strip,.and a forming mandrel. of conical shape positioned adjacent the path of said stock strip to receive a blank cut from the strip and wind the blank into a cup having an apex substantially at an intermediate part of the leading edge of the blank, said cutting means being timed to sever the stock strip after the leading edge of the stock strip has reached the forming mandrel but prior to the forming operation, said forming mandrel operating at a higher speed than said feeding means.

19. The method of making a conical paper cup, which comprises feeding a stock strip along a predetermined path directly into forming position, applying spaced areas of adhesive to said strip, successively cutting said strip substantially between adjacent areas of glue substantially transversely and alonga line other than straight across said strip, each suchcut being made after the forward end of said stock strip has reached the forming position, and forming a 'conical cup from a blank by rolling the blank with the cup apex substantially at an intermediate part of the leading edge. i

20. A container making machine wherein feeding means deliver stock to forming means which shape a container and forcibly eject it into a receiver for finished containers, characterized by a reciprocable member adjacent the receiver having a barb so disposed that a container margin must fiex in passing thereby, said member pushing the containerback into said receiver upon a movement towards the non-receiving end of the receiver, and actuating means to operate said reciprocable member connected to the feeding means of the machine to operate in synchronism therewith.

21. In a machine for making conical paper cups, a cone-shaped forming element, a member in such proximity thereto that a blank may be gripped therebetween, feeding means arranged to deliver a strip of stock directly to said element and said member, driving means to continuously operate said forming element at a greater relative speed than said feeding means operate so that a container may be formed and discharged prior to the arrival of the forward end of the oncoming stock strip at forming position, and cutting means timed to sever a conical cup blank from said strip contemporaneously with the time when the forward end of the strip is received by said forming element and said member.

22. In a machine for making conical paper cups, a conical-shaped forming element, a mem--- ber in such proximity thereto that a blank may be gripped therebetween, feeding means arranged to deliver a strip of stock directly to said element and said member, and cutting means timed to severa conical cup blank from said strip contemporaneously with the time when the forward end of the strip is received by said forming element and said member, said cutting means operating prior to the beginning of the actual folding operation and being shaped to sever the strip thereacross along a line other than straight across the strip and thus define an edge portion of the conical cup blank.

23. In a conical paper cup making machine, means for feeding forward a continuous web of paper toward a cup-forming station, a substantially conical cup-forming mandrel member and a cooperable member at said station between which members the forward end of said web is fed and grasped thereby before the paper going to make up the cup is cut into its final shape, driven means for rotating said mandrel member to form a cup thereon and means for cutting off anend section from said web while said end is gripped by said members, saiddriven means winding said end section of the web on said mandrel member into a cup having an apex substantially at an edge of said end section. I

24. In a conical paper cup making machine, means for feeding forward a continuous web of paper toward a cup-forming station, a substantially conical cup-forming mandrel member and a cooperable member at said station between which members the forward end of said web is fed and grasped thereby before the paper going to makeup the cup is cut into its final shape, driven means for rotating said mandrel. member to form a single-piece conical cup, thereon having an apex substantialb at an edge ofan end section of the web going to make up the cup, and means for cutting oif an end section of said web while said end is gripped by said members, said driven means winding said end section of the web on said mandrel member, and cutting means including a rotary cutter associated with said members and arranged to progressively cut the paper gripped by said members as the paper is wound on said mandrel member, said cutting operation defining the circular mouth edge of the cup.

25. In a conical paper cup making machine, means for, feeding forward acontinuous strip of paper toward a cup-forming station, a cup-forming mandrel member and a cooperable member at saidstation for progressively winding paper cups, between which members the forward end of said strip is fed and grasped thereby before the single-piece blank is cut off, and cutting means including blank' cut of! means and means associated withthe cup forming member including a circular cutting edge on said mandrel member for cutting the paper to define the circular mouth edge of the cup, said mouth edge cutting taking place simultaneously and progressively with the winding of said end section of said web on said mandrel member into a cup with an apexial point substantially at an edge of the paper being wound into a cup.

26. In a conical cup making machine including a cup forming mandrel member and a cooperable member as well as means for feeding a continuous strip of stock directly to said members, the improvement which comprises cutting means associated with said members for cutting the mouth end of a pointed cup contemporaneously with the rolling of the cup into conical shape with a closed point, and means for applying pressure to the pointed end of the cup to eject the cup from said mandrel member.

27. In a process of making a cone-shaped paper drinking cup having a pointed apex wherein a forward end of a continuous strip of paper is fed to a cup-forming station, including a cup formingmember, the steps of gripping the strip at said station by said member, and severing a single section of the strip going to make up the entire drinking cup having a pointed apex wherein a forward end section of a continuous paper strip is supplied directly to a cup-forming station including a cup forming member, the steps of gripping said end section at said station by said member, rolling said end section in said station into a cup having its apex substantially at an inter-' mediate part of a leading edge of said end section, and contemporaneously therewith cutting the paper being rolled so as to define the mouth edge of said cup.

29. In a process of making a single-piece coneshaped paper drinking cup having a pointed apex, the steps of supplying a forward end section of a continuous paper strip directly to a cup-forming station including a cup forming member, gripping said end section by said member at said station, rolling said end section in said station into a cup, and contemporaneously therewith cutting the paper being rolled so as to define the mouth edge of said cup, said cutting being effected by the act of rolling said end section into a conical cup with its apexial point substantially at an intermediate part of a leading edge of said end section.

30. In a container making machine, feeding means arranged to continuously urge a stock strip forward along a predetermined path, cutting means, continuously operating forming means, and driving means to actuate the forming means at a greater rate of speed than the feeding means operate, all said means being relatively timed so that the cutting means operate immediately after the forward end of the stock strip has reached the forming means but before the actual folding of the blank begins.

31. The method of making a conical paper cup, including feeding a substantially continuous strip of stock into forming position, and to a cup forming member at said forming position, gripping the end of the strip by said member, thereafter sever-' ing a blank from said strip substantially at the time the forward edge of the strip arrives at forming position, and forming the blank into a conical cup at said forming position by rolling the blank into a pointed cone and trimming the mouth end thereof.

32. The improved process of making a conical paper drinking cup with the aid of a substantially conical shaped forming mandrel, which includes the steps of feeding the forward end of a substantially continuous strip of stock into engagement with the forming mandrel, applying spaced patches of adhesive to said strip while it is fed, severing a section going to make a cup from the leading part of said strip by cutting the strip between adjacent patches of adhesive, said severing operation beginning subsequentlyto the engagement of the end of the strip with the forming mandrel, and thereafter wrapping the section around the forming mandrel.

33. In a container making machine, container forming means arranged to grip the forward edge of a stock strip, feeding means arranged to feed asubstantially continuous stock strip into said forming means, and cutting mechanism arranged to sever a container blank from said strip after the forward edge of the strip has been gripped by said forming means and prior to the forming operation.

34. In a container making machine, container forming mechanism containing gripping means, and feeding means arranged to advance a substantially continuous stock strip directly into enmechanism timed to sever a container blank from said strip after said gripping means have engaged the forward end of said strip but prior to the forming operation.

35. In a conical cup making machine, a conical forming mandrel having gripping means to grip the forward edge of a stock strip, feeding means arranged to feed a stock strip directly into engagement with said forming mandrel, gluing means arranged to apply all necessary glue in spaced patches of glue on said stock strip, and cutting means timed to sever a blank by cutting said strip between adjacent patches of glue after the forward edge of the strip has been gripped by said mandrel, said forming mandrel rolling said blank into a conical cup with its apex substantially at an intermediate part of a leading edge of the blank.

36. In a container making machine, container forming mechanism comprising a rotatable mandrel carrying gripping means and from which a finished cup is ejected, feeding means arranged to advance a'stock strip directly into engagement with said mandrel, and cutting means'timed to sever a blank from said strip after it has been gripped by the mandrel but before the forming operation has begun.

37. In a container making machine, a forming mandrel of substantially true conical shape rotatable about its own axis and from which a finished container is ejected, said mandrel carrying gripping means, feeding means arranged to advance the leading end of a stock strip directly into engagement by said gripping means, and cutting means timed to sever acomplete container blank from said strip after it has been gripped by the mandrel and before the forming operation begins.

38. 'Ihe method of making a conical paper cup with the aid of a forming mandrel, including the steps of feeding a substantially continuous strip of stock towards the mandrel, engaging the forward end of the strip with the mandrel, then severing a blank from the leading portion of the stock strip, and thereafter winding the blank around the mandrel into a conical cup.

39. A conical paper cup making machine wherein feeding mechanism delivers stock to a rotatable substantially conical forming mandrel which shapes a cup and forcibly blows it off into a receiver for formed containers in nested relationship, characterized by ratchet toothed means associated with the receiver and located so the toothed part thereof extends into the path of a fiying ejected cup in a manner to cause the larger portion of said cup to flex in passing said toothed part and expand behind a tooth to prevent the cup from rebounding out of the receiver, a reciprocable member adjacent the receiver having an I inward projection disposed so the larger part of a flying ejected container must flex in passing thereby and expand therebehind, said reciprocable member pushing the cup back into more ingagement with said gripping means, and cutting timate nesting with previously received cups and urging the stack of cups towards the non-receiving end of the receiver upon a movement in that direction, and moving away from received cups to permit the entry of a new cup upon a movement in the opposite direction, and actuating means for said reciprocable member operatively connected with the feeding mechanism to function in synchronlsm therewith.

40. The method of making a conical paper cup, which comprises feeding a strip of stock along a predetermined path, successively cutting said strip substantially transversely but along a line other than straight across said strip to remove a blank having leading and trailing edges embodying complemental arcs, one of which is convex and one of which is concave, applying adhesive to the paper before commencing the forming of the cup, and forming a conical cup from a blank so severed by rolling the blank with the cup apex at a substantially intermediate part of the leading edge and in a direction such that the blank is rolled from said leading edge towards a portion of said convex arc.

41. The method of making a conical paper cup, which comprises feeding a substantially continuous strip of stock along a predetermined path, transversely severing successive segments from the extremity of the continuous strip of paper by means of a series of repeated and identical cuts embodying arcs curving in the same direction whereby blanks are formed each having leading and trailing edges embodying compiemental arcs, applying adhesive to the paper before commencing the forming of the cup, and successively forming conical cups by rolling each blank, with the cup apex at a substantially intermediate part of the leading edge, progressively from one part of its leading edge towards another part of the same leading edge.

WALTER E. AMBERG. .0

CERTIFICATE OF CORRECTION. Patent No. 2,205,515. June 1;, 191m.

NALIER E. AHBERG.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, first,

coiumn, line 35, after the word "container-making insert -machine--; page 2, first column, line 30, for "shock" read stock--; page 5, first column, line 141}, for "Caried" read Carried--; page 14., first column, line 14.6, for "threaded" read --threaded1y--; line 60, for "hereinafter" read -hereinabove page 7, second column, line 1414., claim 1;, for "bar" read --barb--; page 10, first column, line 15, claim 28, for "cone-shaper" read -coneshaped--; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 25rd day of July, A. D. 191+0.

Henry Van Arsdale, (Seal) Acting Commissioner of Patents.

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