US2076312A - Automatic cone making machine - Google Patents

Description

April 6, 1937.; w. s. WHITENG,JR

AUTOMATIC CONE MAKING MACHINE Filed July 31, 1934 3 Sheets-Sheet l 4 :4 Skim/W34.

April 6, 1937. w. s. WHITING JR 2,076,312

' AUTOMATIC'CONE MAKING MACHINE Filed July 51, 1934 5 Sheets-Sheet 2 April 1937- w. s. WHITING, JR 2,076,312

- AUTOMATIC CONE MAKING MACHINE I Filed Jul; 31, 1934 3 Sheets-Sheet 3 Patented Apr, 6, 1937 I UNITED. STATES su'rom'rrc com: MAKING William S. Whiting, Jr., Canton, N. 0., casino:

to l'he Champion Paper and Fibre Company,

Canton, N. 0., a corporation of Ohio V Application July 31, 1934, Serial No. 737,855

The present invention relates to the art of forming cones from suitable web or strip material, and is concerned more particularly with apparatus adapted. to form such cones from such material. The invention will be described hereinafter with specificreference to an embodiment thereof adapted for the automatic manufacture of textile cones from a continuous band, web

or strip of double deckle-edged, straight sided, 10 relatively heavy paper.

The apparatus of the present invention comprises, in combination: combined means for receiving the forward end of a continuous strip or web of paper, for spreadingthereover a fluid adhesive and for forwarding the strip or web; means for grasping the forward end of said strip or web; means for dividing from said strip, while so held, a portion or cone-forming blank which is in shape a symmetrical trapezium whose 0 two parallel sides were, before the division, edges of the strip or web; and means for forming the so-divided portion or blank into a conical object. To this combination there may be, and preferably is, added means for truncating the apex 25 and/or for trimming the base of the conical object whereby to yield a finished cone.

To this skeletal organization there -may be added supplemental agencies, as will hereinafter appear.

The dividing means aforesaid comprises, preferably, an oscillatable severing mechanism adapted alternately to sever from the strip or web of material right-hand and left-hand portions or i sure-applying means whose pressing face is relatively yieidable and adapted for cooperation with the means later referred to. for forming the conical objects. with the oscillatable severing mechanismyproducing alternate right-hand and lefthand portions or blanks from the strip, I preferably employ a plurality of means for formin such portions or blanks into conical objects, one

of which latter is adapted'to act on right-hand portions or blanks and the other on left-hand portions or blanks. I

The cone-forming means is preferably mounted for rotation and reciprocation, whereby it may, at one extremity of its reciprocation engage and, with the aid of the co-acting pressure-applying mechanism, grasp an edge 'of the strip while, simultaneo ly, a portion or blank of.the

55 latter is being divided off from the same, and

thus during its rotation and reciprocation, form the so-grasped portion or blank into a conical object, and, at the other extremity of its reciprocation be freed of the so-formed object. Moreover, the two reciprocatable cone-forming means may be arranged in complementary relation to each other, so that one of said means is at the upper extremity of its reciprocation when the other of said means is at the lower extremity of its reciprocation, the two being revolvabie in opposite directions.

In the organization just described, the coneformingv means includes, preferably, a right-hand mandrel and a left-hand mandrel. As the righthand mandrel approaches the lower extremity of its reciprocatory movement it engages with and grasps the forward end of thepas'ted strip or web of material during the moment required for r the severing of a trapezium-shaped portion whose base is at the right of the strip; and as this mandrel resumes its reciprocatory movement the other, or left-hand, mandrel begins a complementary travel, approaching the new diagonal forward end of the forwardlyfed pasted strip and, as it approaches the extremity of its travel, engages with and grasps said end during the mo-f ment required for the severing therefrom, by the oscillatable severing means, of another trapezium-shapedportion or blank whose base is at the left of the strip.

Because a dividing or severing means requires a momentary, but nevertheless definite interval of time for theperformance of its function, means are provided for momentarily stopping the forward feeding of thestrip or web of material during the interval of severing, thus avoiding the otherwise inevitable bucklingwhich would result from intermittent movement at the severing -'zone in conjunction with constant movement at the feeding and pasting zone. Thus the strip or web of material is maintained in a substantially flat condition during the forward feeding thereof to the cone-forming means. Moreover, to free the wrapped-up conical object from the cone-forming member or mandrel I provide an ejecting means adapted to be brought into operation at predetermined intervais, preferably when the mandrelis at the extremity of its reciprocatory travel opposite to that at which it is adapted toengage with the end of the forwardly fed strip or web of materiah The cone-forming mandreis are preferably hollow and are provided with suitable slots, or apertures in their'working faces whereby. the blanks applied to said working faces may be subjected to fluid pressure either less than or greater than atmospheric pressure. Thus, the mandrels may be equipped with means for alternately creating between the mandrel face and the blank first a partial vacuum effective during the enag n grasping and winding up of the blank, and then a superatmospheric pressure whereby to loosen the wound-up conical object from the mandrel, to facilitate the ejection or stripping of the cone from the mandrel. Where the cone forming means is reciprocatable the mandrel thereof may be connected to sources of partial vacuum and superatmospheric pressure by suitable flexible conduits, and suitable valve mechl5-anism may be provided to automatically change from partial vacuum to superatmospheric pressure according to the relative location of said 'mandrel between the extremities of its reciprocatory travel.

described in greater particularity with reference to the accompanying drawings, in which Fig. l is a side elevation of an apparatus constructed in accordance with the invention;

Fig. 2 is a plan view of the apparatus illustrated in Fig. l;

Fig. 3 is an end elevation of the apparatus viewed from the right-hand end of Fig. 1, certain parts being omitted;

Fig. i is a fragmentary bottom plan view of the bed and parts carried thereby;

Fig. 5 is a sectional elevation of one of the cone-forming mandrels and associated mechanism;

Fig. 6 is a sectional elevation of parts shown in Fig. 5, the section being taken on the axis of the piston valves thereof; and

Fig. 7 is a perspective view of one of the ejecting members or strippers.

Referring more particularly to Figs. 1 to 4 of the drawings, it will be seen that the apparatus comprises an elevated bed I, rigidly supportedupon a framework including legs or uprights 2 and string pieces or braces 3. Carried by the supporting framework is a suitable prime mover, such as an electric motor 4, the shaft 5 of which carries a driving pulley B and a driving pinion I (see Fig. 3).

Beneath the bed I is a tank 8 for storage of fluid adhesive, and this tank is connected with the intake side of a. pump 8 by means of conduit III. Mounted upon the bed I above the tank 8 is a trough or receptacle II to which fluid adhesive is fed indirectly (as will hereinafter appear) from the pump 9 by way of a conduit l2 which extends to a point above the receptacle I I. A combined riser and overflow pipe I3 connects'the receptacle II with the tank 8 and serves to maintain a desired appropriate level of brackets l4 arranged adjacent to the sides of receptacle H are a feed roller I5 and a complemental floating or gravity-responsive pressureapplying roller It. The roller I5 is so arranged within the trough orireceptacle II as to pick up the fluid adhesive therefrom, and the conduit II has its discharge end so located with respect to the roller It as to feed adhesive thereupon. Thus the rollers IS and It will feed adhesive to and distribute it upon both sides or faces of the web of cone-forming material fed between them, as will be explained. One trunnion I! of the roller I5 is extended beyond its bearing and car- 1 rice a sprocket l8 driven, clockwise, by a suit- The apparatus of the present invention will be 'aovasia able endless chain I9 to which driving motion is imparted by a sprocket 29 fixed upon the shaft 2i of pump 9. A slack adjuster 22, comprising a pair of spaced rollers 22' mounted at opposite .ends of a link I22 which is pivoted at I23 on a bracket E24 for rocking movement about the point I23, is applied to the driving side of the chain I 8. The shaft 2i, and hence the pump 3 and sprocket 20, are drivenfrom a crankshaft 23 by suitable means, preferably conventional chain-and-sprocket gearing including sprockets 2d and 25 on the crankshaft and pump shaft, respectively, and a cooperating chain 26, the crankshaft 23 being driven by a worm-gear 2? through a pulley 28, on the back shaft 29 of the worm, and the pulley 6 on the motor shaft connected by the crossed belt 30.

A substantially horizontal table 3! supported above bed i by posts 32 spans the space between the bite of the rollers i5 and It and the severing or dividing mechanism next described. Any other suitable supporting means for the forwardly fed strip may be substituted for table 3!.

a pair of shears for performing the severing operation upon the strip material. The cutter frame -is mounted for oscillation upon a vertical pivot bearing 39, and oscillatory movement is imparted thereto by means hereinafter described. Vertical reciprocation is imparted to the cutter block 36 by means of springs 40 and a push rod 4| arranged for vertical sliding movement within and extending through the block 34 and its bearing member 39, as shown in Figs. 1 and 2, to provide, respectively, a seat 42 for the block and a thrust part 53 which latter is engaged by one end of a rock lever 44 pivoted at 45 in a bearing bracket 46 secured to the under side of the bed I. The other end of the lever 44 is forked to receive a roller 41 which cooperates with a peripheral cam 48 carried by and rotating with the crankshaft 23. As will be apparent from an inspection of Fig. l, the cam 48 has its operative peripheral face provided with two similar diametrically opposite depressions or recesses 49 into which the roller 41 may drop under the influence of the compression spring 50, and hence the rock lever M will be oscillated twice during each revolution of the cam 48 and crankshaft 23 to operate the shears.

Inasmuch as the cutting stroke of the shears is imparted by the spring 50 acting upon the rock lever 44, it will be obvious that in case the shears should jam no injury will be suflered by the operating mechanism.

The free end of the lever 44 is provided with an. extension 5| carrying a link 52 to which is attached the slack adjuster 22. Thus, upon every upward stroke of the lever end, and hence every cuttingstroke of the shears, the chain I9 willbe' loosened and the backlash between the chain and its sprockets will provide for a pause in feeding influence of the rollers I5 and I6 upon the strip, which, as hereinbefore pointed out, is desired.

The cone forming mechanism proper comprises a pair of rotatable, vertically reciprocable, frustoconical mandrels 53, 53 having their rotative bearings in mandrel heads 54, I4 provided with slide bearings 55, 55' (Fig. 6) on standards I. 56' rigidly mounted upon the bed I. Reciprocation is imparted to the heads 54, 54', and hence to the mandrels 53, r 53' by the crankshaft 23 the cranks 51, 51' of which are provided with suiti able connecting rods 58, II working through slots 59, 59 in the bed I and connected with the heads 54, 54' by wrist pins ill, 60'. .As will be seen, the cranks 51, 51' are diametrically oppositely arranged, and hence the mandrels 53, 53' pass each 5 other during their reciprocative movement, one

of same being at the limit of 'its upward stroke when the other is at the limit of its downward stroke.

The mandrel heads 54, 54' are bored at 8| to i provide the rotative bearings for the spindles 82 of the mandrels, and these spindles extend through the heads and are provided at their ends opposite to the mandrels-with loose pulleys 63. Outwardly beyond the bearings 84 of these 5 pulleys the spindles are threaded to receive. friction disks 65, and their ends have fixed thereto collars 66 between which and the disks 85 are interposed helical springs 61 surrounding the spindles and withtheir ends secured to the collars and disks as shown in Fig. 5. The springs 61 are coiled in such sense with respect to the direction of rotation of the mandrels and their spindles that if rotation of the friction disks is arrested, the springs will be wound up and will tend to withdraw the disks from frictional driving engagement with the hubs of the pulleys 63. Thus, as it is desirable, for a purpose hereinafter explained, to arrest rotation of the mandrels at the limit of their downward movement, the disks 55 are provided with lugs or detents 68 adapted to engage stop members 69 appropriately rigidly mounted in the path of movement of the lugs or detents 68 when the mandrels reach the limit of their downward movement. Obviously, as soon as the mandrels move upward sufliciently to enable the lugs or detents to clear the stops, the springs 6'5 will unwind and will force the disks 8! into driving frictional engagement with the pulley hubs.

As hereinbefore stated, vacuum and pressure are resorted to to provide for proper functioning of the mandreis during the winding operation, and in order that these forces may be appropriately controlled in timed relation to the successive steps of the cone-forming operation, means have been provided for this purpose which are responsive to the positions assumedby the mandrels during their cone-forming operations, as hereinbefore indicated.

) The mandrels are hollow throughout the interior of their conical portions, and the shells thus formed are provided with slots or apertures I so located and in such arrangements that they will best perform their intended functions. Each spindle 62 is bored throughout the major portion of its length, and is apertured, as shown at H, to form a duct 12 affording communication between the hollow interior of the mandrel and a valve chamber 13 in the mandrel head (see Figs.

) and 6) by way of a bore 14. Opening into the valve chamber 13 adjacent to one end is a channel li'which communicates by way of a pipe 16 and flexible tube Tl with a source of vacuum,

and opening into it adjacent to its opposite end is a channel 18 which communicates through'a pipe II and flexible tube ll with a source of pressure. The similar tubes 11 and Ill from the two mandrel heads II, 54' lead to manifolds ti and H, respectively (see Figs. 1 and 2).

The openings of the channels I! and II into the valve chamber I3- are controlled by piston valves II and II, respectively, interconnected and jointly operated by a valve stem 85 having upper and lower extensions 86 and 81, respectively,

whereby-the position of the piston valves 83 and 84 may be varied to open and close the openings of the channels 15 and 18 with whichthey co operate. Thus, when the mandrel head approaches the limit of its downward movement, the end of the extension 81 will strike against the bed I, or other appropriate abutment, and will move the piston valves to the positions shown in Figs. 5 and 6 to thusv open communication between the source of vacuum and the interior of the mandrel and close oil the source or pressure therefrom, and when the mandrel head approaches the limit of its upward movement the extension 88 will strike against an appropriately arranged stop II, or other suitable abutment, and will move the piston valves to such positions that the source of vacuum will be out off from the interior of the mandrel and the source of pressure opened thereto. It will be understood that the piston valves when moved to one position will retain same by friction until later moved to their other-position. Thus, when the mandrels reach the limit of their downward movement they will beevacuated and the pull of the vacuum at, the

apertures III will continue during their upward movement until they reach the limit of such upward movement, when pressure will be admitted and will continue during their downward movement.

The mandrel rotating pulleys B3 and hence the mandrels 53, 53' are driven in the .directions indicated by the arrows (Fig. 3) by an endless rope or other belt 89 which passes around the pulleys 63 and around a driving pulley 90 geared at 9| to the gear 1 of the motor shaft 5, and also around an idle pulley 92.- It will be apparent that, due to the fact that the mandrels 53, 53' move in opposite directions at the same speed andthrough the same distance, the length of the belt 89 never changes and always maintains the necesssary driving tautness over the several pulleys. Thus the pulleys 63 of the mandrels are constantly driven no matter to what relative positions they may be moved.

To theunder side of the bed I, and longitudinally aligned, respectively, witharms of the cranks 51, 51' are bars 93, Q8 secured in sliding arrangement against the bed I by straps 94. These bars 93, 93' are provided with downwardly oflstanding lugs 85, 95' adapted to be engaged by the aligned crank arms so that longitudinal sliding movement may be imparted to them by such crank arms.

This sliding movement of the bars 93, 93' is utilized for imparting to the severing mechanism the oscillatory movement hereinbefore referred to in the following manner, vim-The vertical pivot bearing 39 of the cutter frame is provided with a downwardly projecting sleeve 96 which, in addition to furnishing a slide bearing for the push rod ll of the cutter block II, has secured to its lower end a yoke member 91, carrying radially ofistand'ing arms 58, 88', provided at their extremities with slots 9!, 99 for the reception of pins Ill, I It carried by and adjacent to the ends of the slide bars 93, 93', respectively. 1

at a point thereon substantially normal to the center of the longitudinal axis of the arms 98, 08', serves to complete the oscillatory movements initially imparted to the yoke and severing mecha-' nism by the sliding movement of the bars 93, 83' under the influence thereon of the crank arms 51. 51', as described. This will be apparent when it is considered that this initial movement is sufflcient to shift the point of connection of the spring IOI with the yoke 01 past the dead center ofthe pivot bearing 39 whereby the action of the spring may come into play to complete the desired movement.

Arranged adjacent to the severing mechanism is a platform I02 pivoted at I03 on a bracket I04 and carrying two similar resilient members or blocks M0, I05, preferably formed of sponge rubber or similar compressible material, which I01 and I01 carried by the bars 93, 93', respectively, which vextend through slots in the bed I.

These pins I01, I01 under the influence of the resilient pressure exerted upon the bars 93, 93' by the spring I08, cause upward movement of the 1 platform I02 uponits pivot I03 through the medium of the lever plate I05. Thus, as the pins 40 I01, I01 are alternately reciprocated bythe bars 93, 03', the platform I02, with its blocks I05, I05, will be moved to and will recede from a position appropriate to apply the requisite pressure to grasp the strip or web of material alternately between the blocks I05, I05 and mandrels 53, 53.-

As hereinbefore pointed out, it is desirable that means he provided for truncating the finished cones and for trimming off excess stock at their butt ends. For this purpose two. cutter disks I08 and I09 are provided, same being appropriately located and mounted upon and driven by the shaft 0 of a motor III rigidly supported by a stand II2 mounted upon the bed I.

The ejector mechanism for strippingv the 55 finished cones and trimmed surplus stock from the mandrels comprises two stripper arms II3, I I3, one for each of the 'mandrels 53, 53, respectively, these arms ca y ng fork-shaped stripper fingers Ill, I II, respectively, adapted to straddle their respective mandrels. I The stripper arms H3, 3' are carried at the upper ,ends of operating levers H5, H5, pivoted in. bearing brackets H5, ilfiand the lower ends of these levers are connected with and operated by the bars 93, 03',

respectively, by means of pin and slot connections H1, H8. Inasmuch as the stripper arms must, preferably, be supported in operative position by means of the operating levers I H5, H5, struts I H0,

H8 are provided upon the stripper arms H3,

H3, and these struts are enabled to properly maintain the desired elevation of the stripper fingers III, III with respect to the mandrels by means of lost motion connections 9, 9' between the ends of the stripper arms and the 76 operating levers H5, H5.

aovaam wiper plates or guards I20, I20 are suitably supported adjacent to, and with their faces in parallelism with, the conical faces of the mandrels 53'and 53', respectively, to aid in the operation of winding the cone-forming blanks upon the mandrels. Q

The operation of the apparatus is substantially as follows: The strip or web of cone-forming material a (Fig. 2) is introduced into the bite of the rollers I5 and I5, and while fed forwardly over the table -3I by the action of these rollers upon it, has applied to both of its faces the fluid adhesive pumped from the tank 8 by the pump 9. The upper face of the strip or web receives the adhesive fluid from the roller I5 upon which such fluid is distributed by the discharge end of the conduit I2, and the lower face of the strip or web receives the adhesive fluid from the roller it which feeds the fluid upwardly from the trough or receptacle II.

The thus treated strip or web of cone-forming material is threaded into the severing mechanism between the shears formed by the cutters 31 and 38, and, in due course, the operation of the machine will cause the shears to sever the end of the strip or web upon a diagonal line b, for example.

Continued operation of the machine feeds the thus initially cut or forward end of the strip over and upon the resilient member I05 of the platform I02 and the mandrel 53 descending thereupon holds the strip while the severing mecha- The mandrel 53 is the one upon which the coneforming blank, severed as just described, is wound, and it will be apparent, from the foregoing description of the apparatus, that when the mandrel 53 is in its lowermost position, wherein it holds the blank against the resilient block I05, suction will be operative through the slots or apertures 10 of the mandrel to cause the longitudinal edge and adjacent portions of the blank to adhere to the mandrel.

.Of course, the dwell of the mandrel at its lowermost position is practically only instantaneous, for the reason that the crank shaft 23 is constantly driven and, thus, as soon as the mandrel contacts with the blank, and the blank is simultaneously severed in the manner described, the mandrel will start upon its upward movement, and it will also start its rotation, which had been momentarily arrested by engagement of its lug or detent 58 with the complemental stop 50, so that, under the holding infinance of the suction, the blank will be wound upon the mandrel in wiping contact with the guard or wiper plate I20, and will form a cone of a plurality of superposed layers of the material of the blank intimately joined and secured by the adhesive fluid initially applied to the strip or web of cone-forming material.

Due to the relatively rapid rotation of the mandrel, the blank will be formed into a cone during the initial portion of the upward movement of the mandrel and, therefore, by the time the mandrel reaches a position in its upward movement wherein its axis is in substantial horizontal alignment with the shaft I I0 carrying the cutter disks I08 and I00, the cone will be completely wound and ready for trimming to finished form by these cutter disks. As the mandrel rises past the cutter disks, the cutter disk I08 will truncate the cone, and the cutter disk l09 will trim excess stock from the base of the cone.

When the mandrel 53, with the finished cone and trimmed excess stock thereon approaches the limit of its upwardmovement, the crank arm 51 will have reached a position to operate the slid.-

ing rod 93 by its engagement with the lug 95 of such rod, and will cause the stripper arm H3 to be moved forward under the influence of its operating lever 1 l5, to cause the stripper fingers 'I I! to eject or push the finished cone and trimmed excess stock from the mandrel and into a suitable discharge trough or chute, not shown. This ejecting orstripping action is aided by the admission at this time of pressure to the hollow interior of the mandrel, in the manner hereinbefore described in detail, such pressure acting through the apertures or slots 10 to loosen the cone upon the mandrel.

Obviously, as the mandrel 53 is moving upward, the mandrel 53' is moving downward and, hence, when the mandrel 53 has reached the limit of its upward movement, the mandrel 53' will have reached the limit of its downward movement and will have engaged the end of the web or strip of cone-forming material which has meanwhile been fed through the severing mechanism into position upon the resilient block I05. It will be seen, moreover, that as the roller 41 drops into one of the depressions 49 of the cam 48, which depression has at this time reached a position beneath the roller 41, the severing mechanism, which meanwhile has been oscillated to a position the reverse of that shown in Fig. 2, will be actuated by the lever 44 to operate the shears and thereby sever from the strip or web a trapezium of cone-forming material arranged in. the sense opposite to that indicated in Fig. 2, and thus suitable to be wound upon the mandrel 53'. k

As has been explained hereinbefore,'the feed of the strip or' web by the rollers l5 and I6 is momentarily stopped during the severing operation of the shears by virtue of the actuation of the slack-adjusting device 22 under the influence of the lever 44 and link 52, thus preventing buckling of the strip or web between the rollers and the severing mechanism.

From the foregoing, it will be seen that the operation of the machine in forming cones alternately upon the mandrels 53 and 53' may be continued at will, so long as a strip or web of coneforming material is fed into the apparatus.

Various changes and modifications are considered to be within the spirit of the invention an the scope of the following claims.

I claim:

1. Cone-forming apparatus comprising, in combination, means for receiving a strip of coneforming material and for forwarding such strip; means for intermittently grasping the forwarded end of such strip alternately at its right-hand edge and at its left-hand edge; means operated bination, combined means for receiving the end of a continuous strip of cone-forming material and for forwarding such strip; cooperating means including a revolvable conical mandrel and a complemental pressing member between which the forwarded end of said strip is grasped, said mandrel beingmounted for reciprocating movement, means for reciprocating said mandrel in a path at right angles to the plane of the material, said pressing member being mounted independently of said mandrel at one extremity of reciprocation thereof; means for dividing from said strip, while so held, a portion thereof; and means including the aforesaid mandrel for forming the so-divided strip portion into a conical object. v

3. Cone-forming apparatus as defined in claim 2, in which the complemental member of'the grasping means is provided with a pressureapplying mechanism.

4'. Cone-forming apparatus. as'defined in claim 1, in which the cone-forming means is mounted for reciprocating movement and means for imparting reciprocating movement thereto.

5. Cone-forming apparatus as defined in claim 2, in which the grasping means functions to grasp the forwarded end of such strip along a side edge thereof at one extremity of reciprocation of said cone-forming meansw 6. Cone-forming apparatusas defined in claim 1, in which the dividing means includes an oscillatable severing mechanism arranged transverse- 1y of the strip and adapted to sever such strip alternately into right-hand and left-hand portions of trapezium shape.

'7. tconedforming apparatus comprising, in com bination, combined means for'receiving the forward'end of a continuous strip of cone-forming material, for spreading thereover a fluid adhesive and for forwarding the strip; plural means for grasping the forward end of such 'strip alternately at the right-hand edge and at the lefthand edge of such strip; an oscillatable severing mechanism'adapted to divide from such strip, while so held, alternately right-hand and lefthand portions thereof of trapezium shape; and plural means for forming the so-divided strip portions into conical objects.

8. Cone-forming apparatus comprising, in combination, combined means for receiving the forward end of a continuous strip of cone-forming material, for spreading thereover a fluid adhesive and for forwarding the strip; plural means each including a revolvable conical mandrel for grasping the forward end of such strip alternately at the right hand edge a'nd'at the left-hand edge of such strip; an oscillatable severing mechanism adapted to divide from such strip, while so held, alternately right-hand and left-hand portions thereof of trapezium shape; and plural means including the aforesaid mandrels for forming the so-divided strip portions into conical objects.

9. Cone-forming apparatus comprising, in combination, combined means for receiving the forward endof a continuous strip of cone-forming material, for spreading thereover a fluid adhesive and for forwarding the strip; plural means for grasping the forward end of such strip altemateiy at the right-hand edge and at the left-hand edge of such strip, said grasping means including right-hand "and left-hand revolvable conical mandrels and a cooperating pressure-applying mechanism; an oscillatable severing mechanism adapted to divide from such strip, while so held, alternately right-hand and left-hand portions thereof of trapezium shape; and plural means including the aforesaid mandrels for forming the so-divided strip portions into conical objects.

10, Cone-forming apparatus comprising, in combination, combined means for receiving the forward end of a continuous strip of cone-forming material, for spreading thereover a fluid adhesive and for forwarding the strip; plural means for grasping the forward end of such strip alternately at the right-hand edge and at the left- .plural means including the aforesaid mandrels for forming divided portions of such strip into conical objects; and means for simultaneously operating said shears and one of said grasping means.

11. Cone-forming apparatus as defined in claim 2, and a fixed trimming means operable upon material carried by the mandrel of said coneforming means during the reciprocation of the latter.

12. Cone-forming apparatus as defined in claim 2, in which the said combined means ineludes a. feed roller and in which there are provided means for imparting positive rotation to said feed roller including a flexible driving member; and means providingfor an interruption to the driving effect of said driving member including mechanism for slackening and tightening the driving member.

13. Cone-forming apparatus as defined in claim 2, in which the said combined means includes a feed roller with driven sprocket and in which there are provided a driving chain and sprocket and means for permitting backlash in said chain and sprocket drive whereby to cause temporary arresting of the rotation of the driven 'sprocket' slackening and tightening the driving member;

plural means for grasping the forward end of said strip alternately at the right-hand edge and at 'the left-hand edge of said strip, said grasping means including right-hand and left-hand revolvable conical mandrels and a cooperating pressure-applying mechanism; an oscillatable shears interposed between said combined means and said rasping means and in the path of travel of such strip; plural reciprocatable means including the aforesaid mandrels for forming divided portions of such strip into conical objects, said shears being adapted to divide from such strip, while thelatter is held by said grasping means, alternately right-hand and left-hand portions thereof trapezium shape; and means for simultaneously operating said shears and one of said grasping means. v

15. Cone-forming apparatus as defined in claim 1, characterized in that the said coneforming means comprises a hollow revolvable conical mandrel carried on a hollow spindle operating. in a, mandrel head, a chamber in said head communicating by means of ports adjacent to either end of said chamber with passages in said head, said chamber being provided with valve mechanism adapted alternately 9495? one or the other of said ports; and intermediate said ports a passage affording communication between said chamber and said hollow spindle.

16. Cone-forming apparatus as defined in claim '1, characterized in that the said coneforming means comprises a hollow revolvable conical mandrel carried on a hollowspindle operating in a reciprocatable mandrel head, a chamber in said head communicating by means of ports adjacent to either end of said chamber with passages in said head, said chamber being provided with valve mechanism including valves carried by a reciprocating valve stem having portions extending outwardly from said mandrel head and adapted alternately to engage coopcrating stops, said mechanism being" adapted alternately to close one or the other of said ports as reciprocation of the mandrel head causes the said valve stem portions'alternately to engage their cooperating stops; and intermediate said ports a passage affording communication between said chamber and said hollow spindle.

1'7. Cone-forming apparatus as defined in claim 2, in which means are'provided for ejecting the finished conical object from the mandrel.

18. Cone-forming apparatus as defined in claim 2, and means for ejecting the finished conical object from the mandrel, said means including stripper members actuated in timed relation to the reciprocation of said mandrel.

19. Cone-forming apparatus as defined in claim 2, in which the means for forming the conical object includes a guardadja'cent to the mandrel and against which the divided strip portion is wiped during revolution of the mandrel.

20. In apparatus of the class described, in combination, means for receiving the forward end of a strip of cone-forming material and for forwarding such strip; means for supplying adheslve'material to such strip; means for grasping the forward end of such strip when forwarded; means for dividing from such strip a portion thereof to provide a cone-forming blank; and a vertically reciprocable cone-forming means comprising a bearing member, vertical guide means for said bearing member, a shaft rotatable in said bearing member and carrying a conical mandrel rotatable with said shaft, and means for rotating said shaft comprising a loose pulley thereon, means for continuously rotating said loose pulley and means establishing and normally maintaining frictional driving engagement between said loose pulley and said shaft, said last named means including a spring-pressed member adapted to rotate with said shaft and normally to hold said loose pulley in frictional driving engagement therewith, and means for disengaging said spring-pressed member from contact with said loose pulley against the action of the spring adjacent one extremity of reciprocation of said cone-forming means.

21. In apparatus of the class described, in combination, means for receiving the forward end of a strip of cone-forming material and for forwarding such strip; means for supplying adhesive material to such strip; means for grasping the forward end of such strip when forwarded; means for dividing from such strip a portion thereof to provide a cone-forming blank; reciprocatable means for forming the thus divided blank into a conical object; and means for reciprocating said cone-forming means; said cone-forming means comprising a reciprocatable bearing member, a shaft rotatable in said bearmg membef and carrying a conical mandrelrotatable with, said shaft, andmeans for rotating said shaft comprising a loose pulley thereon, means for continuously rotatingsaid' loose pulley and; means establishing and normally maintaining frictional .driving engagement between said loose pulley and said shaft, said last named means including a spring-pressed member adapt-

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