US3105421A

US3105421A - Coin wrapper forming apparatus

Info

Publication number: US3105421A
Authority: US
Publication date: 1963-10-01
Anticipated expiration: 1980-10-01

Description

Oct. 1, 1963 N. J. PETRI com WRAPPER FORMING APPARATUS Fil ed Sept. 19. 1961 7 Sheets-Sheet 1 uvvszvrom lV'ZLO J. PETE/ A7702/VEK5 Oct. 1, 1963 N. J. PETRI 3,105,421

com WRAPPER FORMING APPARATUS Filed Sept. 19, 1961 'r Sheets-Sheet 2 INVEJVTOR. Mqw d. fiEm/ BY Y Oct. 1, 1963 N. J. PETRI com WRAPPER FORMING APPARATUS '7 Sheets-Sheet 3 Filed Sept. 19, 1961 ATTOEIVE'KS Oct. 1, 1963 N. J. PETRI com WRAPPER FORMING APPARATUS 7 sheets-sheet 4 Filed Sept. 19, 1961 INVENTOR. 4 5440 d. PH'E/ Oct. 1, 1963 N. J. PETRI 3,105,421

COIN WRAPPER FORMING APPARATUS Filed Sept. 19, 1961 7 Sheets-Sheet 5 F INVENTORI j" P M4440 d. PET/El Oct. 1, 1963 N. J. PETRI com WRAPPER FORMING APPARATUS 7 Sheets-Sheet 6 Filed Sept. 19, 1961 United States Patent 3,105,421 COW WRAPPER FORMING APPARATUS Neiio J. Petri, San Francisco, Calif., assignor to N & N, Ina, doing business as Coinrap Co., San Francisco, Calif., a corporation of California Filed Sept. 19, 1961, Ser. No. 139,258 16 Claims. (Ci. 93-81) This invention relates to machines for forming strips of paper into wrappers for coins, and more particularly to a rotating turret-type machine for forming such wrappers.

The coin wrappers produced by the present machines are of the type wherein a strip of paper is rolled into a tube having .an inside diameter generally equal to that of the coins of the denomination to be put into such wrapper. One end of the tube is curled back into itself to prevent the tube from unwrapping and to provide an annular bead insides the tube to hold the coins in the tube. These tubes are then delivered to the user who will fill them with coins. After being filled with the standard number of coins, i.e., fifty pennies or dimes, forty nickels, etc., the open end of the tube is manually crimped closed.

It is the primary object of this invention to provide apparatus for forming such coin wrappers wherein the mechanism for rolling the paper into tubes and for curling the ends of the tube is carried by rotating turrets from a paper strip feeding station to a tube-removing station in a continuous operation. In this manner a single feeding station can be used to feed a plurality of rolling and curling mechanisms mounted on the turrets and a single tuberemoving station can be used to remove the formed tubes from these mechanisms. Such an arrangement thus provides a large capacity of operation with the minimum number of parts and enables the coin wrappers to be produced at a minimum manufacturing cost per unit.

Another object of this invention is to provide a mechanism for rolling the strips of paper into a tube in which the strips are first Wrapped tightly around a spindle and are then released to enable the tube to expand slightly so as to permit easy removal from the spindle.

A further object of this invention is to provide apparatus for forming coin wrappers wherein a plurality of rolling and curling devices .are mounted in a rotating turret and wherein the rolling and curling devices are operated by cam actuators carried thereby which are in engagement with cam tracks fixed to the frame of the machine, to insure synchronism of the rolling and curling devices with the means to feed paper strips to and with the means for removing the formed tubes from said devices.

Other objects and advantages will become apparent in the course of the following detailed description.

In the drawings forming a part of this disclosure and in which like parts are designated by like reference numerals throughout the same,

FIG. 1 is a front elevational view of the coin wrapper forming apparatus together with the paper feeding apparatus and the formed coin wrapper removing apparatus.

FIG. 2 is a plan view of the paper feeding station.

FIG. 3 illustrates the shape of the paper used in forming the coin wrapper.

FIG. 4 illustrates the rolled and beaded coin wrapper produced by the apparatus of the invention.

FIG. 5 is a side elevational view of the coin wrapper forming apparatus, as seen from line 55 of FIG. 1.

"ice

FIG. 6 is a sectional View, in elevation, of a portion of the coin wrapper forming apparatus, illustrating the details of the wrapper rolling apparatus and the wrapper and curling apparatus, taken on line 6-6 of FIG. 1.

FIG. 7 is a sectional elevational view, taken generally on line 77 of FIG. 5, showing the coin Wrapper rolling turret and a portion of the coin wrapper removing station.

FIG. 8 is an enlarged view of one of the rolling heads mounted on the rolling turrets.

FIG. 9 is an elevational view of one of the end curling heads carried on the curling turret, as seen from line 99 of FIG. 6.

FIG. 10 is a sectional view in elevation of a curling head, taken on line 1014) of FIG. 6.

FIG. 11 is a detail view showing, in perspective, one of the coin wrapper removing gripping members which are mounted on the curling heads.

FIG. 12 is a sectional view in elevation of one of the cast body members for the curling heads, taken on lines 12-12 of FIG. 6.

FIG. 13 is a sectional view, generally in plan of a rolling head and a curling head, taken on the lines 13-13 of FIGS. 8 and 9.

FIG. 14 is an enlarged detail view of the mating portions of the rolling and curling heads, illustrating the positions thereof during the end curling operation.

FIG. 15 is a chart illustrating the planar layout of the various arcuate cams involved in the operation of the machine to illustrate the interfunctional relationship of the elements.

Referring now to the drawings, and in particular to FIGS. 1 and 2, the general overall operation of the equipment is as follows: A continuous paper strip 1 is drawn from a supply roll 2 and fed through a printing station 3 to the cutters 4 and 5. The first cutter 4, having a cutting edge 6 disposed at an angle to the direction of movement of the paper strip, forms the cut 7 in the strip. The second cutter 5, by means of cutting edge 8, severs the strip along out line 9. The small triangular piece 11 is discarded and the severed strip 12 is fed by rollers 13 to a rolling head RH of the coin wrapper forming machine 15. The cutters 4 and 5 and feed rollers 13 are driven by chain 16 from the forming machine 15 so as to be in synchronism therewith in order that a severed strip 12 is fed to each rolling head RH as it rotates past the paper feeding station 13.

During the operation of the coin wrapper forming machine the paper strips 12 are rolled into an open-ended tube and one end of the tube is then curled inwardly to join a toroidal head 17. The formed coin wrappers 18 are removed from the machine 15 at the tube removing station 19 and travel up a suitable conveyor 20 to a table 21. Although a temporary storage table 21 is shown, any conveyor, receptacle or the like may be used with the coin Wrapper forming machine of the present invention, as desired.

The forming machine 15 comprises in general a frame F on which axially-aligned rolling and curling turrets 24 and 25 are journaled for rotation. The rolling turret 24 has a plurality of rolling heads RH mounted thereon, and the curling turret 25 has a plurality of curling heads CH mounted thereon in such manner that each curling head is aligned with a rolling head. On the particular embodiment of the invention herein shown and described, there are six pairs of curling and rolling heads. Although various reference numerals may be used to identify various parts of the frame, the reference letter F will be used generically throughout the drawings to indicate the frame portions of the machine which are fixed in relation to the moving parts of the machine.

Rolling T urrct Referring now to FIGS. 5 and 6, the rolling turret 2 is keyed by key 26 to shaft 27 to rotate therewith, the shaft 27 being journaled in bearings 28, 29 and 34) mounted on frame 'F. The outer periphery of turret 24 has gear teeth 31 formed thereon which engage the drive gear 32 fixed to the shaft of motor 33. As will be noted in FIG. 6, sprocket 34 is fixed to shaft 27 to drive chain 16 which powers the paper strip cutting and feeding stations previously described.

Secured to bearing 28, and hence fixed to frame F, by means of collar 35, is sun gear 37, which as seen in FIG. 6 is closely spaced from the rolling head turret 2 Rolling Heads The rolling heads RH, illustrated in different sectional views in FIGS. 6 and 13, each comprise a body casting 41 having a locating hub 42 projecting through a mounting hole in the rolling turret 24, the casting 41 being fixed to the rolling turret by screws 43. A rotatable spindle 45 is journaled by roller bearings 46 and 47 in casting 41 and has a planetgear 43 pinned thereto at its left end (as viewed in FIG. 6) by pin 49. The planet gear 48 meshes with the stationary sun gear 37 so that when the rolling turret 24 rotates, the planet gear will rotate about its axis, causing the spindle 45 to rotate in the rolling head RH.

As best seen in FIG. 13, the rolling head RH also includes a body member 51 secured to body casting 41 in the following manner. Two pins 52 and 53, fixedly secured in bores of body casting 41 by set screws 54,

protrude from casting 41 to be received within aligned bores in body member 51. Wing nuts 55, threadedly engaged in body member 51 extend into grooves 56 of pins 52 and 53 to prevent the body parts from coming apart. If any coin wrappers should be jammed between spindle 45 and body member 51 during operation, the wing nuts 55 enable the body member 51 to be quickly and easily detached from body casting 41 so that the wrapper can be removed.

The spindle 45, from shoulder 57 thereof to the right, has an outside diameter generally equal to the size of the coins to be wrapped. If it is desired to change the machine so that a different size coin wrapper may be formed, the screws 43 are removed and the entire rolling head RH (body members 41 and 51) are removed. A new rolling head, having a different size spindle, is then reinserted with the planet gear 48 thereof engaging sun gear 37.

The right hand end of spindle 45 is bored and counterbored for the reception of spring 53 and bushing 59. The latter has a square bore for the reception thereinto of the square shank of plunger 6%. Screw 61, passing through spindle 45 and bushing 59 enters the longitudinal groove 62 in plunger 69 to limit the outward movement of plunger 61 by spring 58. The plunger head 63, secured by screw 64 to plunger 61?, has an arcuate annular groove 65 .therearound, for a purpose to be hereinafter discussed.

As best seen in FIGS. 7 and 8, the body member 51 is provided with flat lips as and 57, forming a slot 68 thcrebetween, to receive the strips of paper from the paper feeding station and to guide the strips to the rolling spindle 45. The bore 69 of body casting 51 in which the portion of spindle 45 to the right of shoulder 57 rotates is spaced from said spindle by an amount slightly, but appreciably, greater than the thickness of the wall of the formed paper tube 18, for a purpose to be hereinafter discussed. Each rolling head is provided with two rollers 70 and 71 engageable with the spindle 45 to hold the paper strip thereagainst so that the rotating movement of the spindle will roll the paper into a tube. Roller 7% is prefer-ably formed of Micarta and roller 71 is formed of polished steel so that the two rollers have relatively high and low coefiicients of friction with the paper which will be formed into the tubes. These rollers are mounted for movement into and out of engagement with spindle 45 as follows: Body member 51 carries two shafts 72 and 73 (in the same bores that receive pins 52 and 53) secured against movement by roll pins 74. Shaft 72 has a reduced diameter end portion 75 to which rocker arm 76 is secured by retainer pin 77. As seen in FIGS. 8 and 13, roller 7% is mounted on stub shaft 78 which is carried by rocker arm 75. Tension spring 30 is connected between a body casting flange 3-1 and an adjustment screw 82 on the rocker arm to bias the roller 74 into engagement with spindle 45.

Roller 71 is mounted in the same manner. Rocker arm 84 is connected by retainer pin 85 to shaft 73 and carries stub shaft 86 on which is mounted roller 71. Spring 87, connected between the body casting lip 66 and adjustment screw 83 on the rocker arm 84 biases the roller 71 into engagement with spindle 45.

The rollers 76} and 71 are designed to be moved out of engagement with spindle 45 by means of bell crank 96. This crank, pivoted at 91 to an ear Q2 of body member 51, engages screw 93 on rocker arm 76. As crank rotates in a clockwise direction (FIG. 8) it will force rocker arm 76 and shaft 72 to rotate in a counter clockwise direction against the bias of spring 80 to remove roller 7% from engagement with spindle 45. Continued counter clockwise movement of rocker arm 76 will bring it into engagement with nut 94 on the lost-motion connecting rod 95. Further movement of rocker arm 76 will now be transmitted to rocker arm 84, causing this latter arm and shaft 73 to rotate in a counter clockwise direction against the bias of spring 87, removing roller 71 from engagement with spindle 45. Reverse movement of crank 9i) will first allow roller 71 to move back into engagement with spindle 45 and then will allow roller 76 to engage spindle 45. Thus, depending on the position of crank 90, both rollers can be in engagement with the spindle, both rollers can be free, or only the steel roller 71 can be in engagement. The purpose of this arrangement will be discussed later.

The free end of crank 91 carries a cam follower roller 95 which engages cam track surface 97 fixedly mounted relative to the frame F on the periphery of bearing 29. Thus, as the rolling turret 24 rotates, the cam followers of the cranks 5b of each rolling head RH will roll along cam 97 causing the rollers 7t and 71 to engage with and disengage from the spindles 45 in a sequence to be hereinafter described in connection with the cam chart, FIG. 15.

Curling Turret The curling turret 25 comprises a pair of generally circular plates 101 and 102 keyed by keys 103 and 104 to shaft 27 so as to rotate therewith in unison with the rolling turret 24.

A second motor 105 (FIG. 5) mounted on frame F is connected by belts 1116 to drive shaft 167, which is mounted concentrically with drive shaft 27 and is spaced therearound, as by roller bearings 1138. Sun gear 109, having peripheral gear teeth thereon is fixed to shaft 107 for movement therewith. The above described construction allows the sun gear 109 to be rotated by motor 105 independently of the rotation of the curling turret 25. In practice, the sun gear 109 is driven at a much higher speed of rotation than is the curling turrent.

As seen in FIGS. 5 and 6, the frame F includes a protective canopy 112 covering the sun gear 11 which is mounted on the vertically extending frame member 113.

Curling Heads Six curling heads CH are mounted on the curling turret 25, each head being aligned with one of the rolling heads RH. As best seen in FIGS. 6 and 12, each curling head comprises a cast body member 121 secured by bolts 121 and 122 to the curling turret members 101 and 102. The body member 1219 is radially bored to receive four bearing members 123 which are each held in place by setscrews 124 and are each provided with an oilite bearing head 125.

The body member 121 is longitudinally bored at 126 to slidably receive the curling head plunger 127. Cam follower roller 128 is fixed to plunger 127 and rides in the longitudinal slot 129 formed in body member 121 so that the plunger 127 is held against rotational movement in body member 121) but is permitted to move longitudinally relative thereto. The roller 128 projects from the body member 129 and is adapted to enter the cam track 117 formed in frame member 115.

Journaled within plunger 127, by means of roller bearings 131 and 132 is spindle 133. The right hand end 134- of the spindle 133 (FIG. 6) is splined and extends through the complimentary grooved sleeve 135 onto which is keyed planet gear 136. This latter gear is journaled for rotation in body member 120 by roller bearings 137 and 138 and has gear teeth 139 in meshing engagement with sun gear 169. By this splined connection, the high speed rotation of sun gear 169 is continuously transmitted to spindle 133 throughout the range of longitudinal movement of the curling head plunger 127 in body member 121).

As best seen in FIGS. 12 and 13, the plunger 127 is urged to the right by the bias of tension springs 141 secured at one end to the body member flanges 142 and at the other end to plunger 127.

The left-hand end of spindle 134 is threaded into socket member 145 which, as seen in FIGS. 13 and 14, flares outwardly at 146 from the circular socket portion 147. The socket portion 147 has an internal diameter equal to the internal diameter of bore 69 of the rolling head body casting 51. The socket portion 147 blends into the annular groove 148 which faces outwardly towards the rolling ead. As is noted from FIG. 14, the plunger groove 65 and the socket member groove 148 form a toroidal cavity into which the open end of the paper tube may be curled. Three hardened steel pins 151 are mounted in the socket member 145 so that the polished annular grooves 151 thereof lie in groove 148. As will be noted, the grooved portion of pins 150 is further to the left in FIG. 14, than is the groove 148, in order that the end of the rolled paper tube held by the rolling head will be contacted by the pins 1519, rather than by the socket member groove 148, as the socket member is moved to the left towards the rolling head.

The curling head plunger 127 also carries the gripping means for removing the rolled and curled paper tube 13 from the rolling head spindle after the tube end has been curled. Two gripper members 153 and 154 (HGS. 9 and are secured to stub shafts 155 and 156 which are disposed in bores in the plunger head member 157. Sector gears 158 and 159 are secured to the other ends of shafts 155 and 156, respectively, and are in meshed engagement with ring gear 169.

Shaft 161, fixed to ring gear 160, extends down through a slot 162 in plunger head 157 and has a retainer member 163 fixed thereto to hold cam follower ball 164 captive. Tension spring 165 biases the shaft 161 in a clockwise direction as seen in FIG. 9.

FIG. 9 illustrates the open position of the grippers 153 and 154 when the ball 164 rolls along the cam track surface 166 of cam 118. As the curling head rotates to the left, the ball 164 will engage the step 167 of cam 118 causing the shaft 161 and ring gear to rotate against the bias of spring until the ball 164 can roll along the cam track surface 168 of cam 118. Rotation of the ring gear 160 causes rotation of the gripper members to move the needle members 169 and 174} inwardly towards the axis of the curling head to engage the paper tube. The gripper needles Will remain closed on the tube until the ball 164 rolls off of the cam track surface 168. The resilient pad 171 in the plunger head 157 engages the shaft 172 fixed to ring gear 160 to protect the parts from shock on the rebound of the gripper members to their open position.

Tube Removing Station The paper tube removing station is best illustrated in FIGS. 7 and l, and comprises a rotatable plate member 176 mounted on shaft 177 which is journaled in bearing 173 secured to frame F.

A plurality of Y-shaped tube receivers 179 are secured to and rotate with plate member 176 adjacent the path of movement of the curling heads CH so as to receive the tubes 13 therefrom as the curling head rotates. After the tubes have been received in the Y-shaped receivers, as shown in P16. 7, the clamps 180' move against the tubes to hold them in place. The clamps 180* are pivotally mounted on plate member 176 and have cam follower rollers 181 which roll along the stationary cam track 1 2 which is fixed relative to the frame F of the machine. When the rollers come to step 183 in cam 182, the springs 184 move the clamps 181 to engage and hold a tube disposed in the receiver 17h. When the rollers come to step 185 of cam 182. the clamps will open, allowing the tubes to be removed from the receiver 179.

When released, the tubes will be picked up by the lugs 186 of conveyor belt 21? (FIG. 1) for delivery to delivery table 21.

The coin wrapper forming machine 15 drives the tube removing apparatus and conveyor 2.1 in synchronism therewith by the following drive connections illustrated in FIGS. 1 and 5: chain 187 (driven by a sprocket fixed to shaft 27), gears 18%, and chain 189 to a sprocket on shaft 177 to drive the tube removing apparatus. Chain 191 on a sprocket on shaft 177 then drives conveyor 20.

Operation Referring again to FEGS. l3, the printing and cutting stations 3, 4 and 5 print and cut the paper web 1 into the individual strips 12 which are then fed to the wrapper forming machines 15 by the feed rollers 13. The paper feeding station is synchronized with the operation of the forming machine 15 so that the leading edge of the severed paper strips 12 is inserted between the lips 66 and 67 of the rolling heads RH as the latter pass by the feed rollers 13. The width of the paper strip 12 is approximately equal to the distance between shoulder 57 on spindle 45 of the rolling head and the outermost surface of the plunger head 63.

At this time, the various cam followers of the machine relating to this particular rolling head RH and the curling head CH aligned therewith are at the positions indicated at A on the cam track chart, FIG. 15. The cam follower 128 on the curring head CH has not yet entered cam slot 117 but is instead biased away from the rolling head by springs 141.

Cam follower 96 on rolling head crank 90 is engaged with surface 97a of cam track 97 at which place both rollers 70 and 71 are engaged with spindle 45 of the rolling head.

Cam follower ball 164 on the curling head CH engages cam surface 166 of cam track 118 at which location spring 165 holds the needle grippers 169 and 17%) away from the axis of the curling head plunger 1'33.

Cam follower 181 on the tube removal station engages cam surface 132:: on the cam track 182 so that the clamp 18% is held against the Y-shaped tube receiver 179 to clamp against a tube 18 removed from the forming machine from the previous cycle of operation.

As the curling head turret rotates, the cam follower 128 of the curling head associated with the particular rolling head RH here involved enters cam slot 11'? and rolls along cam track portion 117a, moving the on head toward the rolling head. I

Before and during this time, the Micarta and steel rollers 70 and 71 grab the paper strip '12 as it enters the rolling head and cause it to be wrapped around the rotating spindle 45. Since the Micarta roller 7% has a relatively high frictional engagement with the paper strip 1-2 it will cause the latter to be tightly wrapped around the spindle.

The clamp 18%) releases from the Y-shapcd receiver 179 during this period.

The cam follower 95 on crank it next engages cam surface 97b of cam track Vi, causing both rollers '71? and 71 to move away from spindle 45. This movement allows the tightly Wrapped paper tube to unwrap slightly and expand to the inside diameter of the bore 6? of the rolling head body member 51. After this unwinding, the cam follower 96 engages cam surface 970 which allows the steel roller 71 only to re-engage the paper tube and press it against spindle 45. Since roller H is highly polished it will not grip the paper tube with such a force that the tube will wrap itself tightly round the spindle 45. Instead, roller '71 acts merely as a to press the tube against spindle so that the rotation of spindle 45 is imparted to the tube.

When the curling head cam follower 1223 reaches the beginning of cam surface 11712 the speed of movement ofthe curling head towards the rolling head is reduced'and the curling of the open end of th tube is begun. The rapidly rotating curling plunger 133 and curling head socket cause the forward edge of the paper tube to curl around the curve 151 of pins 3% back into the groove 65 of the rolling head plunger 61 Continued movement of the curling head towards the rolling head causes the end of the paper tube to be curled into the desired toroidal shaped bead.

When the curling head cam follower reaches can surface 117C the curling head is backed off approrimately one inch, and the rollers "71? and 71 of the rolling head are both disengaged from the spindle 4-5 by the engagement of the cam follower 96 with cam surface Wi d.

The cam surface 117d is now reached and the curling head dwells without longitudinal movement while cam follower 164 engages cam surface 167 to rotate the needle grippers in towards the axis of the curling head to grip the coin wrapper tube at its curled head.

Cam track surface 117@ now causes the curling head to back off from the rolling head, so that the gripped paper tube 16 is pulled oil? of the rolling head spindle 45'.

At cam surface 1177 the curling head dwells without longitudinal movement to allow the pa er tube to be picked off by the tube removing station. The cam follower 164 on the needle gripping apparatus moves from cam surface 168 back to cam surface 166 to release the needles 169 and 17%) from the paper tube. Simultaneously, the cam follower 131 at the tube removing station engages the cam surface 183, causing the clamp 18%! to hold the freed tube 18 in the Y-shaped receiver.

Cam surface 117g then moves the curling head back to its original position, clearing the curling head from the continued path of movement of the tube removing means. The tube 18 is then delivered to the conveyor 2% as previously described.

Although the invention has been described in connection with the production of tubes for wrapping coins, it is to be realized that such tubes could be use for wrapping any other generally similar article, or could even be used for a totally different purpose, if desired. For example, such tubes could be used for temporarily insulating or otherwise protecting the ends of rods or tubes. That is, the invention herein described relates to the machine for forming the paper tube, rather than the tubes themselves.

It is to be further realized that the particular form of the machine described above and illustrated herein is to be considered as a preferred embodiment of the invention and that various modifications can be made of the shape size and arrangement of parts without departing from the spirit of the invention or the scope of the attached claims.

I claim:

1. in an apparatus for forming coin Wrappers: axiallyaligned rotatable, rolling and curling turrets, means for rotating said turrets at the same speed, a plurality of rolling heads mounted on said rolling turrets for movement therewith, a plurality of curling heads mounted on said curling turrets for movement therewith and for limited movement in a direction parallel to the axes of said curling turrets, each of said curling heads being aligned with one of said rolling heads, said rolling heads each including a rotating spindle means disposed with its axis parallel to the axis of each of said rolling tur rets for rolling strips of paper into open-ended cylindrical tubes therearound, each of said curling heads having means forming an open socket thereon in alignment with and for the reception of an open end of the tube carried by the rolling head aligned therewith, a spring-pressed plunger carried in each of said rolling head spindles in alignment with the sockets of said curling heads, said plungers and sockets being matable and shaped to form a toroidal pocket into which the said open tube ends may be curled, means for rotating said socket forming means at a speed other than the speed of rotation of said rotating spindle means, and means for cyclically moving said curling heads towards their respective rolling heads to mate said spring-pressed plungers and sockets.

2. T he apparatus of claim 1 wherein said curling heads are mounted upon said curling turret equal radial distances from the axis of turret rotation, said socket forming means of each curling head comprising a socket member mounted axially on one end of a splined spindle, means for supporting said spindle for rotative and axial movement upon a movable axis aligned with the axis of a rotating spindle means, and wherein said means for rotating said socket forming means comprises a rotatable sun gear mounted upon the axis of turret rotation and a plurality of planet gears, each planet gear engaged with said sun gear and keyed with one of said splined spindles.

3. The apparatus of claim 2 and further wherein the spindle supporting means of each curling head comprises a body member fixed to said curling turret and a plunger member mounted for rotative and axial movement upon said body member coaxial with said splined spindle, and further wherein said means for moving said curling heads toward their respective rolling heads comprises a continuous cam track mounted in fixed relation to the axis of said curling turret and cam followers mounted to the respective plungers, each plunger being axially reciprocated by said cam track and its associated cam follower while said curling turret is rotated.

4. The apparatus of claim 3 and further including gripping means carried by each curling head for gripping a tube, said gripping means comprising a sun gear coaxially mounted to said plunger, a pair of planetary gear sectors mounted to said plunger and engaged with said sun gear, and gripper members secured to said pair of gear sectors and engageable with said tube closely adjacent the end thereof; means for rotating each sun gear and operating said gripping members to grip said tube after the end thereof has been curled and during the time said rolling and curling heads move apart, said rotating and operating means comprising a cam track mounted in fixed relation to the axis of said curling turret and cam followers mounted to respective sun gears.

5. Apparatus for forming coin wrappers comprising: a frame, axially-aligned rotatable, rolling and curling turrets mounted on said frame, means for rotating said turrets at the same speed, a rolling head mounted on each of said rolling turrets for movement therewith, a curling head mounted on each of said curling turrets for movement therewith and for limited movement in a direction parallel to the axis of said curling turret, said curling head being aligned with said rolling head, a paper feeding station fixed relative to said frame adjacent the path of movement of said rolling head and including means for feeding a strip of paper to said rolling head as the latter passes said paper feeding station, said rolling head having a rotating spindle means for rolling said strip of paper into an open-ended cylindrical tube therearound with the axis of said tube being parallel to the axis of rotation of said rolling turret, said curling head having means forming an open socket thereon in alignment with and for the reception of the open end of the tube carried by said rolling head, a spring-pressed plunger carried in said rolling head spindle in alignment with the socket of said curling head, said plunger and socket being matable and shaped to form a toroidal pocket into which the said open tube end may be curled, means for rotating said socket forming means at a speed other than the speed of rotation of said rotating spindle means, cam track means on said frame and cam follower means on said curling head for moving said curling head towards said rolling head to mate said spring-pressed plunger and socket after the strip of paper in said rolling head has been rolled thereby into a tube and for moving said curling and rolling heads apart after the open end of said tube has been curled.

6. Apparatus as set forth in claim and further including gripping means carried by said curling head for gripping said tube, said gripping means including gripper member engageable with said tube closely adjacent the end thereof, cam track means on said frame and cam follower means on said curling head for operating said gripping means to grip said tube after the end thereof has been curled and during the time that said rolling and curling heads move apart, a tube removing station fixed relative to said frame adjacent the path of movement of said curling head and including means for removing said tube from said curling head as the latter passes said tube removing station.

7. In an apparatus for forming coin wrappers: a frame, axially-aligned rotatable, rolling and curling turrets mounted on said frame, means for rotating said turrets at the same speed, a rolling head mounted on each of said rolling turrets for movement therewith, a curling head mounted on each of said curling turrets for movement therewith and for limited movement in a direction parallel to the axis of said curling turret, said curling head being aligned with said rolling head, a paper feeding station fixed relative to said frame adjacent the path of movement of said rolling head and including means for feeding a strip of paper to said rolling head as the latter passes said paper feeding station, said rolling head comprising a body member having a bore therein, a rotatable spindle disposed within said bore, the differences in radii of said bore and spindle being substantially greater than the wall thickness of a tubular coin Wrapper to be produced by said machine, first and second rollers, said first roller having a higher coefficient of friction with paper than said second roller, means for mounting said rollers for movement into and out of tangential engagement with said spindle, means normally biasing both of said rollers into engagement with said spindle, cam track means on said frame and can follower means on said rolling head for moving said first roller away from said spindle while allowing said second roller to remain in engagement with said spindle or for moving both of said rollers away from said spindle, said curling head having means forming an open socket thereon in alignment with the spindle of said rolling head, a spring-pressed plunger disposed in said spindle in alignment with the socket of said curling head, said plunger and socket being matable and shaped to form a toroidal pocket therebetween, means for rotating said socket at a speed other than the speed of rotation of said spindle, cam track means on said frame and cam follower means on said curing head for moving said curling head towards said rolling heads to mate said spring-pressed plunger and socket after the strips of paper in said rolling heads have been rolled thereby into tubes and for moving said curling and rolling heads apart after the open end of said tube has been curled.

3. Apparatus as set forth in claim 7 and further including gripping means carried by said curling head for gripping said tube, said gripping means including gripper members engageabie with said tube closely adjacent the end thereof, cam track means on said frame and cam follower means on said curling head for operating said gripping means to grip said tube after the end thereof has been curled and during the time that said rolling and curling head move apart, a tube removing station fixed relative to said frame adjacent the path of movement of said curling head and including means for removing said tube from said curling head as the latter passes said tube removing station.

9. Apparatus for forming coin wrappers comprising: a frame, a plurality of sets of aligned, rolling and curling heads mounted on said frame for cyclical movement relative thereto and in a continuous path, each curling head V of said sets being mounted for limited movement towards and away from the rolling head aligned therewith, a paper feeding station fixed relative to said frame adjacent the path of movement of said rolling heads and including means for feeding a strip of paper to each of sad rolling heads *as the latter passes said paper feeding station, said rolling heads each including rotating spindle means for rolling said strips of paper into openended cylindrical tubes therearound, each of said curling heads having means forming an open socket thereon in alignment with the spindle of the rolling head aligned therewith and for the reception of an open end of the tube carried by said rolling head, a spring-pressed plunger carried in each of said rolling head spindles coaxially therewith, said plungers and sockets being matable and shaped to form a toroidal pocket into which the said open tube ends may be curled, means for rotating said socket forming means at a speed other than the speed of rotation of said spindles, and means for moving said curling heads towards said rolling heads to mate said springpressed plunger and socket after the strips of paper in said rolling heads have been rolled thereby into tubes and for moving said curling and rolling heads apart after the open end of said tube has been curled.

10. Apparatus as set forth in claim 9, and further including gripping means carried by each of said curling heads for gripping said tubes, said gripping means including gripper members engageable with said tubes closely adjacent the ends thereof, means for operating said gripping means to grip said tubes after the ends thereof have been curled and during the time that said rolling and curling heads move apart, a tube removing station fixed relative to said frame adjacent the path of movement of said curling heads and including means for removing said tubes from said curling heads as the latter pass said tube removing station.

1 1. Apparatus for forming coin wrappers comprising: a frame, axially-aligned rotatable, rolling and curling turrets mounted on said frame, means for rotating said turrets at the same speed, a plurality of rolling heads mounted on said rolling turret for movement therewith, a plurality of curling heads mounted on said curling turret for movement therewith and for limited movement in a direction parallel to the axis of said curling turret, each of said curling heads being aligned with one of sid rolling heads, a paper feeding station fixed relative to said frame adjacent the path of movement of said rolling heads and including means for feeding a strip of paper to each of said rolling heads as the latter passes said paper feeding station, said rolling heads each including rotating spindle means for rolling said strips of paper into open-ended cylindrical tubes therearound with the axes of said tubes being parallel to the axis of rotation of said rolling turret, each of said curling heads having means forming an open socket thereon in alignment with and for the reception of an open end of the tube carried by the rolling ead aligned therewith, means on each rotating spindle means matable with the sockets aligned there with to form a toroidal pocket therewith into which the said open tube ends may be curled, means for rotating said socket forming means at a speed other than the speed of rotation of said rotating spindle means, means for cyclically moving said curling heads towards their respective rolling heads to mate said rotating spindle means and sockets after the strips of paper in said rolling heads have been rolled thereby into tubes and for moving said curling and rolling heads apart after the open end of said tube has been curled, and further including gripping means carried by each of said curling heads for gripping said tubes, said gripping means including gripper members cngageable with said tubes closely adjacent the ends thereof, means for operating said gripping means to grip said tubes after the ends thereof have been curled and during the time that said rolling and curling heads move apart, a tube removing station fixed relative to said frame adjacent the path of movement of said curling heads and including means for removing said tubes from said curling heads as the latter pass said tube removing station.

12. Apparatus for forming coin wrappers comprising: a frame, axially-aligned rotatable, rolling and curling turrets mounted on said frame, means for rotating said turrets at the same speed, a plurality of rolling heads mounted on said rolling turret for movement therewith, a plurality of curling heads mounted on said curling turret for movement therewith and for limited movement in a direction parallel to the axis of said curling turret, each of said curling heads being aligned with one of said rolling .reads, a paper feeding station fixed relative to said frame adjacent the path of movement of said rolling heads and including means for feeding a strip of paper to each of said rolling heads as the latter passes said paper feeding station, said rolling heads each including rotating spindle means for rolling said strips of paper into open-ended cylindrical tubes therearound with the axes of said tubes being parallel to the axis of rotation of said rolling turret, each of said curling heads having means forming an open socket thereon in alignment with and for the reception of an open end of the tube carried by the rolling head aligned therewith, a spring-pressed plunger carried in each of said rolling head spindles in alignment with the sockets of said curling heads, said plungers and soonets being matable and shaped to form a toroidal pocket into which the said open tube ends maybe curled, means for rotating said socket forming means at a speed other than the speed of rotation of said spindles, cam track means on said frame and cam follower means on said curling heads for moving said curling heads towards said rolling heads to mate said spring-pressed plunger and socket after the strips of paper in said rolling heads have been rolled thereby into tubes and for moving said curling and rolling heads apart after the open end of said tube has been curled.

13. Apparatus as set forth in claim 12 and further including gripping means carried by each of said curling heads for gripping said tubes, said gripping means includ ing gripper members engageable with said tubes closely adjacent the ends thereof, cam track means on said frame and cam follower means on said curling heads for operating said gripping means to grip said tubes after the ends thereof have been curled and during the time that said rolling and curling heads move apart, a tube removing station fixed relative to said frame adjacent the path of movement of said curling heads and including means for remo ng said tubes from said curling heads as the latter pass said tube removing station.

14. a forming machine for producing tubular coin wrappers, a rolling head comprising: a body member having a bore therein, a rotatable spindle disposed within said bore, the differences in radii of said here and spindle being substantially greater than the wall thickness of said tubular coin wrapper, first and second rollers, said first rofier having a higher coefficient of friction with paper than said second roller, means for mounting said rollers for movement into and out of tangential engagement with said spindle, means normally biasing both of said rollers into engagement with said spindle, a single operator means for moving said first roller away from said spindle While allowing said second roller to remain in engagement with said spindle and then moving both of said rollers away from said spindle.

15. in a forming machine for producing tubular coin wrappers, a rolling head comprisin a body member having a bore therein, a rotatable spindle disposed within said bore, the differences in radii of said bore and spindle being substantially greater than the wall thickness of a tubular coin wrapper to be produced by said machine, first second rollers, said first roller having a higher coeihcient of friction with paper than said second roller, first and second means for mounting said first and second rollers respectively for movement into and out of tangential engagement with said spindle, means normally biasing both of said rollers into engagement with said spindle, a lever pivotally mounted onsaid body and engaged with said first roller mounting means, said lever being arranged upon movement thereof to move said first roller out of engagement with said spindle, and lost motion means connecting said first and second roller mountin'g means 10f allowing said first roller to be removed from engagement with said spindle without removing said second roller from engagement with said spindle and for removin said second roller from engagement with said spindle upon further removal of said first roller from said spindle.

16. in a forming machine for producing tubular coin Wrappers, a curling turret comprising: a plurality of curling heads mounted equal radial distances from the axis of turret rotation, each curling head comprising a socket member mounted axially on one end of a splined spindle; means for supporting each spindle for rotative and axial movement upon a movable axis extending parallel with the axis of turret rotation, said spindle supporting means of each curling head comprising a body member and a plunger mounted forr ot-ative and axial movement upon said body member coaxial with said sp-lined spindle; means for rotating each socket member including a rotatable sun gear mounted upon the axis of turret rotation and a plurality of planet gears, each planet gear engaged with said sun gear and keyed with one of said splined spindles; 11 cans for cyclically moving said socket members and splined spindles in directions parallel with the axis of turret rotation While said turret is being rotated, said means for cyclically moving said socket members comprising a continuous cam track mounted in fixed relation to the axis of said curling turret and cam followers mounted to respective plungers, each plunger being axially reciprocated upon its body by said cam track and its associated cam follower while said curling turret is rotated; and further including gripping means carried by each curling head for gripping a tube, said gripping means comprising a sun gear coaxially mounted to said plunger,

13 14 a pair of planetary gear sectors mounted to said plunger References Cited in the file of this patent and engaged with said sun gear, and gripper members UNITED STATES PATENTS secured to said pair of gear sectors and en-gageable with said tube closely adjacent the end thereof; means for 1,112,351 Beadle P 1914 rotating each sun gear and operating said gripping mem- 5 1,575,894 1926 bers to grip a tube after the end thereof has been curled, 1,586,977 Donnefuan June 11 1926 said rotating and operating means comprising a cam 1,690,287 s? 1928 track mounted in fixed relation to the axis of said curling 2,049,418 Bar'blefl 4, 1936 2,532,844 Hulbert et a1 Dec. 5, 1950 turret and cam followers mounted to respective sun gears, said sun gears being cyclically rotated while said curling 1O turret is rotated.

Claims

1. IN AN APPARATUS FOR FORMING COIN WRAPPERS: AXIALLY ALIGNED ROTATABLE, ROLLING AND CURLING TURRETS, MEANS FOR ROTATING SAD TURRETS AT THE SAME SPEED, A PLURALITY OF ROLLING HEADS MOUNTED ON SAID ROLLING TURRETS FOR MOVEMENT THEREWITH, A PLURALITY OF CURLING HEADS MOUNTED ON SAID CURLING TURRETS FOR MOVEMENT THEREWITH AND FOR LIMITED MOVEMENT IN A DIRECTION PARALLEL TO THE AXES OF SAID CURLING TURRETS, EACH OF SAID CURLING HEADS BEING ALIGNED WITH ONE OF SAID ROLLING HEADS, SAID ROLLING HEADS EACH INCLUDING A ROTATING SPINDLE MEANS DISPOSED WITH ITS AXIS PARALLEL TO THE AXIS OF EACH OF SAID ROLLING TURRETS FOR ROLLING STRIPS OF PAPER INTO OPEN-ENDED CYLINDRICAL TUBES THEREAROUND, EACH OF SAID CURLING HEADS HAVING MEANS FORMING AN OPEN SOCKET THEREON IN ALIGNMENT WITH AND FOR THE RECEPTION OF AN OPEN END OF THE TUBE CARRIED BY THE ROLLING HEAD ALIGNED THEREWITH, A SPRING-PRESSED PLUNGER CARRIED IN EACH OF SAID ROLLING HEAD SPINDLES IN ALIGNMENT WITH THE SOCKETS OF SAID CURLING HEADS, SAID PLUNGERS AND SOCKETS BEING MATABLE AND SHAPED TO FORM A TOROIDAL POCKET INTO WHICH THE SAID OPEN TUBE ENDS MAY BE CURLED, MEANS FOR ROTATING SAID SOCKET FORMING MEANS AT A SPEED OTHER THAN THE SPEED OF ROTATION OF SAID ROTATING SPINDLE MEANS, AND MEANS FOR CYLICALLY MOVING SAID CURLING HEADS TOWARDS THEIR RESPECTIVE ROLLING HEADS TO MATE SAID SPRING-PRESSED PLUNGERS AND SOCKETS.