US2407776A - Can-beading machine - Google Patents

Description

Sept; '17, 1946.

w. I. GLADFELTER ETAL CAN BEADING MACHINE 7 Filed June 22, 1943 ,7 Sheets-Sheet l Sept. 17, 1946. w. GLADFELTER ET AL 2,407,776

CAN BEADING MACHINE 7 Filed June 22, 1943 7 Sheets-Sheet 2 Sept. 17; 1946. w. '1. GLADFELTER ETAL CAN BEKbING MACHINE Filed June 22, 1943 7 Sheets-Sheet 5 P 17, w. l. GLADFELTE R El"AL 2,407,776

- CAN BEADING MACHINE Filed June 22, 194:5 "7 Sheets-Sheet 4 Sept. 17, 1946. w. l. GLADFELTER ET AL ,7

" CAN BEADING MACHINE Filed June 22, 1943 7 Sheets-Sheet-5 Jwucutom Wiltzle Z filadfeltel P 1946- w. l. GLADFELTER ET AL I 2,407,776

CAN BEADING MACHINE F iled June 22, 1943 7 Sheets-Sheet 6 m1 1m mummm III VVilizle, I. Gladlblieh.

awuc'ntom Sgpt. 17, 1946. w. l. GLADFELTER ET AL 2,407,776

. CAN BEADING MACHINE Filed June 22, 1945 '7 Sheets-Sheet 7 Patented Sept. 17, 1946 UNITED STATES PATENT orricn' CAN -BEADING MACIHNE Wiltie I. Gladfelter, Philadelphia, Pa., and Walter A. Ehrlich, Bridgeport, Conn., assignors to Crown Can Company, Philadelphia, Pa., a corporation of Pennsylvania Application June 22, 1943, Serial No. 491,836

12 Claims. 1

The present invention relates to an improved machine for impressing strengthening ribs or beads in the cylindrical surfaces of can bodies and the like. Such strengthening beads are conventionally employed in can bodies toprevent denting or collapse thereof and to make possible the use of lighter sheet metal stock than would otherwise be possible. In order to decrease the thickness of the sheet metal employed in the manufacture of can bodies, attempts have been made to form the strengthening beads of maximum depth, thereby to compensate for the strength and stiffness ordinarily imparted to th bodies by heavier stock.

In accordance with conventional methods and machines, prior to the present invention, strengthening beads have been formed in the cylindrical side walls of can bodies by the use of can body supporting mandrels having peripheral grooves formed therein, and cooperating can body beading rolls positioned exteriorly of the can bodies and having complemental ribs thereon. In these machines, the bodies are rolled between the mandrels andthe beading rolls, and the beads thereby impressed. An example of a machine of the prior art is shown in the patent to Kreuger 2,081,042. In such'machines, the can bodies are subjected to the action of instrumentalities of this type and the strengthening beads are formed therein by cooperating ribs and grooves on the surfaces of the beading rolls and can supporting mandrels, respectively. The rolling force is transmitted from the can supporting mandrel, through the can body thereon, to the exteriorly positioned beading roll, by means of a plurality of rubber rings interspersed between the bead forming or die rings of hardened metal. When attempts are made with machines of the type heretofore used, to increase the depth of the strengthening beads, a limit of depth is soon reached, beyond which the beads cannot be formed, because of a failure of the rubber rings to transmit rotational forces from the inner can supporting mandrels to the exteriorly positioned beading rolls, particularly at the side seams of the can bodies where four thicknesses of metal must pass through the bight between the mandrels and rolls and between the beading rings. It has been found in practice that when attempts are made to form deep beads in can bodies, the side seams will not pass between the mandrels and the rolls, but, on the contrary the mandrels will slip and will fail to rotate the can bodies and the beading rollswhen the side seams are encountered.

The present invention has for its purpose to overcome all of the difliculties encountered with machines of the prior art.

A primary object of the invention is to provide a machine capable of forming in the side walls of can bodies, reinforcing ribs, grooves or beads of greater depth and uniformity than has been possible heretofore. i

A further object is to provide means for preventing slippage between the inner and outerbeading rolls of can beading machines, or, in other words, between the can supporting mandrels, the can bodies and the beading rolls.

Another object. is to provide means which will make it possible to apply greater beading pressure to the can bodies, yet which willfacilitate passage of the side seams through the bight between the mandrels and the beading rolls.

A further object is to provide means for supporting the free ends of the internal beading rolls or can supporting mandrels, to the end that they may withstand greater beading pressure applied thereto by the external beading rolls.

Still another object is to provide an improved means for rotating the can body supporting mandrels and, in combination therewith, to provide improved means for imparting positive rotation to the beading rolls, irrespective of their radial positions relative to the mandrels.

. Other and further objectsand advantages of the invention will be apparent to persons skilled in the art, from a consideration of the specific embodiment of the invention shown in the accompanying drawings, in which:

Figure 1 is a side elevation of the apparatus.

Figure 2 is a vertical longitudinal section.

Figure 3 is a vertical transverse section taken substantially on line 3-3 of Figures 1 and 2.

Figured is a similar section taken on line 44 of Figures 1 and 2.

Figure 5 is a similar section taken on line 5-5 of Figures 1 and 2.

, Figure 6 is an enlarged elevational View of a stationary cam for imparting radial movement to the beading rolls.

Figure '7 is an enlarged detail view of a preferred form of gear train interconnecting the includes end frame members I2, projecting upwardly therefrom and serving to support, a stationary horizontaly disposed shaft I3. Upon the shaft there is a main turret |.5 comprising,

spaced heads I6, I! and a substantialy cylindrical connecting rim l8, journalled on bearings I9 and 29. A cylindrical turret extension 2|, connected to the head projects lateraly, coaxially with the shaft l3, toward the opposite end of the machine, where it is secured to a large spur gear 22, journalled on the shaft l3 upon bearings 23. The turret extension 2| comprises a cylindrical portion 24 of reduced diameter and another cylindrical portion 25- of large diameter connected thereto by a radial Web 25' provided with a plurality of pairs of guiding bores 25, for the reception of can body carrying rods 21, 28,, described in detail below. At the end adjacent its connection to the gear 22, the turret extension is provided with an inwardly projecting flange 29, similarly provided With bores 39 for supporting and guiding the rods 21, 28.

It will be noted that the turret IS, the turret extension 2| and the large spur gear 22 are all interconnected for rotation upon the stationary shaft |3 in unison. The shaft carries a cam barrel 35', secured against rotation by a key 36, and having a pheripheral cam track or groove 31- formed therein, provided with an advanced section at its upper portion and a retracted section at its lower portion. Cam following rollers 38, carried by brackets 39, fast upon the pairs of rods 27, 28, are disposed in the cam track- 31, to reciprocate the rods longitudinally, as the turret revolves about the shaft l3.

As indicatedin Figures 4, 8 and 10, the slide rods 21', 28 carry can body end engaging plates 49, 41 and side wall engaging elements 42, 43, adapted to advance the can bodies from an infeed position onto the associated beading mandrel, into a, beading position and to retract the same therefrom as the rods approach a discharge position. In other words, the rods 21, 28 and the can body engaging members carried thereby, which reciprocate as the turret revolves, serve to move the cans to and from operative relation to the beading instrumentalities.

As indicated in Figure 4, an infeed star wheel or spider 45, fast on a shaft 46, is positioned adjacent the bottom of an infeed chute 41, down which the container bodies roll by gravity from the preceding machine in the line. The star wheel 45 isrotated in timed relation to the rotation of the turret, so that can bodies are fed into the spaces between the rods 21, 28, the. end guide plates 40, 4| and the cradle members 42, 43, when the rods are intheir retracted position, as shown at the bottom of Figure. 2. As thecans move around with the can. holders on the turret, and as they are advanced by the movement of the rods, they are supported by a curved, forwardly leading guide p1ate48 until they have been placed upon and are supported by the beading mandrels, hereinafter described.

After the beading operation has b en Go pleted, the rods 21, 28 and the can engaging members carried thereby are retracted, as they approach a discharge chute 49, which receives the can bodies by gravity when they are stripped from the beadin mandrels by this retraction. The chute 49 preferably comprises a. pivoted section 59, connected by a. spring-pressed. link 5| to a limit switch 52, adapted to cut off the main driving motor in the event of a jam in the line next. machine in the line. V

The head lb of the turret (Figs. 2, 5 and 10) has a plurality of rearwardly projecting, arcuate of can bodies moving from the machine to the flanges 53 formed integrally therewith and shapedto provide seats 54, for laterally projecting wings associated with caps 55 forming portions of rearwardly extending tubular sleeves 56, The sleeves 55 have bearing assemblies 51, 58 at their opposite ends, in which spindles 59 are journalled. Each spindle carries on its rear end a spur gear 60 and on its forward end a beading mandrel 6|, composed of alternate rubber and steel rings 62, 63, the latter having, beading grooves 64 formed in their peripheries. The mandrel is provided at its rear end with a hub 65 terminating in a spur gear'56, and at its forward end with a hub (il screwed onto the spindle 59 and having a reduced portion58 for the reception of a roller 99, held in place by an end cap 10, restrained against endwise movement by a screw H and against rotation by a dowel pin 12.

It will be apparent that, by this construction, the rings 62, 63 may be removed and others substituted, to accommodate can bodies of various sizes and to produce strengthening beads of various spacings and depths.

The turret heads l6 and H are provided with a plurality of radially disposed bores or slideways i5, 76, which receive supporting means for the beading rolls Tl, positioned radially inwardly of the outer beading rolls or mandrels 6|. As shown in Figures 7, 8 and 10, each beading roll support comprises a rack sleeve 18 slidably mounted in one of the bores or slideways l5, l6 and having laterally projecting'rack teeth 79 formed thereon. At its upper end, the sleeve terminates in a platform 39 having recessed spring seats 8|, 82 formed therein, forthe reception of relatively heavy compression springs 83, 84, bearing upwardly against a bearing bracket provided with 9, depending stem 86, slidably received in the bore of the sleeve l8 and having a nut 81-, threaded on its projecting end, below the sleeve 18. The springs 83, 84 normally maintain the bearin bracket 85 in the upwardly projected position, as determined by the engagement of the nut 87' with the end of the sleeve 18, leaving a space 88 between the lower face of the bracket 85 and the upper surface of the platform 88. A cap 89, secured to the bracket by screw 99, secures the bearing assembly 9| thereto.

Each bearing assembly 9| (Figure 10) supports one end of a spindle or shaft 92 for the beading roll 11, made up of a plurality of alternate rubber and metallic rings 93, 94, the latter beingprovided with outwardly projecting beading ribs 95, positionedin alignment with the heading grooves 64 on the outer beading roll or mandrel 6 I At the rear end; each roll shaft 92 carries a gear.

96 of slightly smaller diameter than'the. beading. roll.

For purposes hereinafter explained, thediam eters of. the gears 66 and 95 are of the same relative proportion as the diameters of the bead- ,7

ing rolls 6| and 93.

'Ihe heads I6, I1 of the turret also carry a plurality of rock shafts I00, journalled in appropriate apertures therein andprovided with teeth IOI in mesh with the rack teeth 91. Each shaft I carries, on its rear end, a crank arm I02, having a roller I03 journalled on a stud I04 and disposed in a cam groove I05 formed in a cam plate I06, carried by the shaft I3 and restrained against rotation by a key I01. As shown in Fig-. ures 11 and 12, the angular relation between the crank I02 and the rock shaft I00 may be adjusted by means of a worm screw I 08 mounted in a bore I09 in the crank and having its threads disposed in engagement with peripheral teeth IIO formed on the shaft I00. Rotation of the screw I08 imparts rotational adjustment to the rock shaft I00, after the manner of a worm gear, and when the desired adjustment has been effected, the screw maybe locked in position by a nut I I I.

I As shown in Figure 13, the cam following roller I03 is journalled upon the end of the stud I 04, with a bushing I I2 interposed, lubricant being provided by bores H3, and the stud being held in place by a pin I I4.

By reference to Figures 5 and 6, it will be apparent that, as the cam following rollers I03 enter the radially outermost portion I05a of the cam track I05, the rock shafts I00 will be oscillated. This movement is transmitted by the pinion teeth IOI to the rack sleeves 18, to project the beading rolls 11 outwardly into beading engagement with can bodies on the mandrels BI. The lost motion connection between the bearing brackets and theplatforms 80, provided by the spaces 88, permits the compression springs 83, 84, to yield when the side seams of the can bodies pass through the bight between the beading rolls. However, the springs 83, 84 are sufficiently powerful to apply a substantial beading force to the side seams, so that the latter are provided with strengthening beads, similar to the other portions of the can bodies. The use of heavy compression springs is desirable, since they make it possible to apply sufficient compression forces to form deep strengthening beads in the can bodies, yet they permit the rolls to separate whenthe side seams pass therebetween, thereby preventing slippage between the beading rolls and thecan bodies.

The gears 50, fast upon the ends of the spindles 59, are all in mesh with an orbit gear I20 carried by a hub I2I journalled on the shaft I3 by bearings I22. The hub I2-I also carries a gear I23 in mesh with a similar gear I24 fast upon a rotatable shaft I25 journalled in the frame II at one end by bearings I26and in the frame I2 at the other end by bearings I21, an intermediate portion of the shaft being supported in bearings I28, carried by an upstanding portion I29 of the forward portion of the frame I2. The shaft I25 also carries a spur gear I30, held fast thereon by a. key I3I and disposed in mesh with the main turret gear 22, whereby the turret is revolved. A motor I32 (Fig. 1) connected through a speed reducer I33 to a sprocket or pulley I34 drives the shaft I25 by a belt or chain trained about a sprocket or pulley I35 fast on the end of that shaft.

From a consideration of the above arrangement, it will be appreciated that the drive shaft I25 serves to rotate the turret and the turret extension by means of the gears I30 and 22 and that the orbit gear I29 rotates each of the mandrel supporting spindles 59 through its connection with the gears 60. The ratio between the gears I24, I23, I20 and 50 is such that the spindles are rapidly rotated'in the desired direction, at the desired speed. By changing the relative sizes of the gears I24 and I23, the speed of rotation of the orbit gear I20 and of the spindles may be varied at will.

An important feature of the machine of the present invention is the use of means for positively driving the radially movable inner beading rolls 11,'from and at the same peripheral speeds as the outer beading rolls or can body supporting mandrels 6 I. A direct geared interconnection between these rolls is diflicult, if not impossible, to employ, in view of the fact that" the inner series of rolls are moved a substantial distance, radially with respect to .the outer seriesof rolls, to permit the can bodies to be passed over the free ends of the outer rolls when cans are fed into and removed from beading position. It is diificult if not impossible to assure meshing of such gears, when the rolls are brought together. The pres ent invention obviates this difliculty by providing an offset gear train, continuously in mesh with the gears 56 and 96 which permits radial movement of the spindle 92, without disengagement of the gear train.

Referring to Figures 7 and 9, the turret head I6 carries a plurality of plate-like brackets I40, secured thereto by screws MI and having an offset portion I43 providing a recess for a nut I44, secrewed upon a stud I45 extending through the plate and carrying a spur gear I46, in mesh with the gear 55. A similar gear I41, in mesh with the gear I46 and also with the gear 95, is journalled on a stud I48 carried by the lower portion of the outwardly projected offset portion I43 of the bracket I40. As indicated by dotted lines in Figures '1 and 8, lubricant for the gears I46, I41 is supplied by a bore I49 in the plate I40, leading through branch conduits I50 to conduits I5I in the studs.

It will be seen, by reference to Figure '1, that the gear 95, fast upon the spindle 92 and posi tioned to one side of the gear I41, is free to move radially of the turret a short distance, without becoming disengaged from the gear I41. Hence, the inner and outer beading rolls are continuously rotated at the same peripheral speed, regardless of the radial position of the inner roll 11.

As stated above, the inner beading rolls 1! are 7 urged outwardly into'beading relation to the can bodies 200 on the mandrels BI with very substantial force, by means of the cam followers I03, cranks I02, rock shafts I00, and the rack and pinion devices heretofore described. One of the l important features of the machine of the present invention is the provision of means for preventing displacement of the free ends of the mandrels this portion of their revolution with the turret,

no force is applied to the mandrels by the beading rolls, as indicated in the lower half of Figure 4.

Between the supporting frames II and I2, and mounted upon the base I0, there is an intermediate supporting frameI, having upwardly projecting limbs I50, I51 disposed on opposite sides of the turret and terminating at their upper ends in seats I58, I59, upon which an overhanging arch. member I00 is mounted. The arch has a downwardly facing arcuate trackv surface ,Hi'l', positionedto be engaged by the rollers 69 on the ends ofthe spindles 59, at. the outer or free ends offthe beading mandrels. The vertical position of the arch I60 and the arcuate traclci surface l Eilmay be accurately determined by the use of sh-imsor the like on the seats H58, [59; in order that the track will be firm-1y engaged by the rollers on the mandrels as they revolve-with the turret and rotate on their own axes. The arch elfectivelyprevents any upward or outward displacement of the mandrels under the influence of the force applied thereto by the beading rolls. Hence, it is possible to apply to the can bodies Zllllmnthe beading: rolls considerably more pressure: than'in machines of similar design heretofore used.

, Itisthought that the operation of the machine of. thepresent invention will be entirely clear to. those skilled; in the art from the foregoing description. The turret I5 and the turret extension. 2 Izare rotated as a unit upon the stationary horizontal shaft 13 by the drive shaft 25, through gears 730' and 22'. As the turret rotates, the rods 21, 28 and the can carriers secured thereto are reciprocated longitudinally, to place can bodies up'onand to remove them from the mandrelstl, the can bodies being delivered to the carriers by th star wheel 45 and being conveyed away from the machine by the discharge chute it.

After the can bodies have been placed upon the mandrels, during their travel from the infeedstation a (Fig. 4) to the station b, the beading rolls 1 1 are moved radially outwardly into contact with the can bodies, as indicated at station 0, displacement of the mandrels 6! being prevented by the archlfil).

During all of these movements, the beading mandrels and the beading rolls are positively rotated at the same peripheral speed as a result of their interconnection through gears 66, I46, MT and 96. Gear I24 on theshaft I25 drives the spur gear I23 and the orbit gear I25, which in turn drives the gears 60 and the spindles 59. Hence, as the beading rolls and the can bodies pass from station 0 through stations d and e, the can bodies are rolled between the heading rolls and strengthening beads are formed therein. As the side seams of the can bodies pass between the. rolls, the latter are permitted to separate somewhat, by the coil compression springs 83, 84.

Between stations 6 and f (Fig. 4), the inner beading rolls are moved radially inwardly by the cam following cranks and rock shafts, and the can strippers on. the rods 21, 28 remove the can bodies from the mandrels, in order that they may drop from the machine into the discharge chute, substantially at the station g.

It must be understood that the invention is not limited to the details of construction and arrangement of parts included in the specific embodiment shown in the accompanying drawings and described above, since many modifications will occurto those skilled in the art from a consideration of this disclosure. All modifications coming within the scope of the appended claims and their equivalents are included in the invention.

We claim:

1. A can body beading machine comprising a rotatable turret, a plurality of pairs of parallel beadingrolls carried by the turret and journalled for rotation on radially spaced axes, one roll of each pair being supported at one end only, for the. reception of, can. bodies overits other end, a

r 8 gearfixeduponthe othertend of each roll, afpair of onset intermeshi'ng' idler: gears. carried; by the turret adjacent each pair of-roll. gears in mesh therewith and constituting a driving connection therebetween, means for forcefully moving the other roll of. each pair substantially radially of the turret toward the first mentioned roll to. apply beading pressure to the can bodies thereon while maintaining said driving connection, means for positively rotating the first mentionedfroll of each pair, and means adjacent the path of; movement of the free endof the first mentioned roll of each' pair for preventing displacement thereof under the influence of said. beading pressure.

2'. A can body beading machine comprising. a rotatable turret, a circular series of. beading 'rolls carried by the turret, a second series'of beading rolls carried by the turret radially inwardly" of the first series and disposed in parallel relation thereto, means for rotatably supporting the rolls of theouter series at one end only, whereby a, can body may be passed over theunsupported end, means for rotatably supporting the rolls of the inner series at both ends, means for forcefully moving the lastementi'oned supporting means-and the: rolls carried thereby radially outwardly into beading relation to can. bodies on the first-mentioned rolls, a plurality of gear trains permanently interconnecting each pair of inner and outer rolls; means for positively rotating each outer roll, and meansadj acent the path of movement. of the-free" ends of the outer series of rolls for resisting the beading force applied thereto by the inner series of rolls and for preventing displacement thereof under said force.

3. A can body beading machine comprising ,a rotatable turret, a plurality of parallel beading roll spindles arranged in a circular series and journalled in the turret for rotation about their axes, a beading roll projecting from one end of. each spindle andhaving a free end. remote from the spindle journal, whereby can bodies. maybe passed thereover, a second. set of beading rolls arranged in a circular series in. parallel relation to' thefirst-mentioned rolls, means for moving each roll of the second toward and from a corresponding roll of the first, a gear train interconnecting the rolls for'rotation in unison, means v for forcefully urging each roll in the secondseries into contact witha can body carried bythecorresponding roll of the first series, and means at the free end of. each rollof the first series for resisting the force thereby applied thereto.

- 4. A can body beading machine: comprising; a-

, rotatable turret, means. for rotating said turret,

a plurality of, pairs of beading rolls journalled in said turret and each comprising an outer roll. supported at one end only and having a free end over which the can bodies may be passed and an inner roll mounted for outward radial movement into beading contact with a can body onthe outer roll,'means for forcefully moving the inner roll outwardly, and, stationary means opposite the free; ends of the outer rolls for resisting the force F applied thereto by the inner roll.

5'. A can body beading machine comprising a turret mounted for rotation on a horizontal axis, an outer series of beading mandrels, each having one end j ournalled' in the turret and the other end free for the reception of a can body, a roller on the free end of each mandrel, a series: of bead-- ing rolls carried by the turret in parallel relation to. the mandrels, means for urging. the beading, rolls radially against can bodies :on, the man-- drels to impress circumferential beads. thereon,

and a stationary track positioned opposite to said rollers on the mandrels and resisting the force applied thereto by the beading rolls to prevent displacement of the free ends of the mandrels.

6. A can body beading machine comprising a turret mounted for rotation on a horizontal axis, a plurality of pairs of beading rolls journalled in said turret, each pair comprising one roll supported at one end only and having a free end over which can bodies may be passed and another roll mounted for radial movement into beading contact with a can body on the first roll, means for revolving the turret and for rotating the rolls, there being can body infeed and outfeed stations adjacent one portion of the path of revolution of the turret, a stationary arcuate track extending along another portion of said path and positioned adjacent the free ends of the first-mentioned rolls, and means for urging the secondmentioned rolls against the can bodies on the first-mentioned rolls to impress circumferential heads therein, said track serving to prevent displacement of the free ends of the rolls under the influence of the force applied thereto.

7. A can body beading machine comprising a turret mounted for revolution on a horizontal axis, a plurality of pairs of beading rolls journalled in said turret, each pair comprising an outer roll supported at one end only and having a free end over which the can bodies may be passed and an inner roll mounted for outward radial movement into beading contact with a can body on the outer roll, means for revolving the turret and the rolls, means adjacent the lower portion of the path of revolution of the rolls for deliv- :1.

ering can bodies to and removing the same from the outer rolls, means for forcefully moving the inner rolls outwardly as the rolls traverse an upper portion of said path of revolution, and an arcuate track overhanging the free ends of the outer rolls during their movement along the lastmentioned portion of said path to resist the force applied thereto by the inner rolls.

8. A can body beading machine comprising a turret mounted for revolution on a horizontal axis, a plurality of pairs of beading rolls journalled in said turret, each pair comprising an outer roll supported at one end only and having a free end over which the can bodies may be passed and an inner roll mounted for outward radial movement into beading contact with a can body on the outer roll, said outer rolls each having an anti-friction roller journalled on its free end, means for revolving the turret and the rolls, means adjacent the lower portion of the path of revolution of the rolls for delivering can bodies to and removing the same from the outer rolls, means for forcefully moving the inner rolls outwardly as the rolls traverse an upper portion of said path of revolution, and an arcuate track overhanging the rollers on the free ends of the outer rolls during their movement along the lastmentioned portion of said path to resist the force applied thereto by the inner rolls.

9. A can beading machine comprising a supporting frame, a turret journalled in the frame for revolution on a horizontal axis, a plurality of horizontal can body receiving mandrels journalled in the turret for revolution therewith, a plurality of horizontal, radially movable can beading rolls mounted inwardly of the mandrels for revolution therewith, infeed and outfeed means carried by said frame for delivering can bodies to and removing the same from said mandrels adjacent the lower portion of the path of revolution of the turret, an arcuate track carried by the frame and overhanging and contacting the free ends of the mandrels along an upper portion of said path of revolution, and means for forcefully moving the beading rolls radially outwardly into contact with can bodies on the mandrels as the latter move along the last-mentioned portion of said path, said track serving to prevent displacement of the mandrels under the influence of the force applied by the beading rolls.

10. A can body beading machine comprising a rotatable turret, a plurality of pairs of beading rolls journalled in the turret, each pair comprising an outer roll supported at one end and having a free end over which the can bodies may be passed and an inner roll supported at both ends and mounted for outward radial movement into beading contact With a can body on the outer roll, and means for moving the inner rolls outwardly and into such contact, the last-mentioned means comprising a bearing bracket for each end of each inner roll, a supporting platform for each bracket, compression spring means between each bracket and platform, a rack associated with each platform, and pinion means for reciprocating the racks, said compression spring means serving to permit the rolls to separate slightly as the side seam of the can body passes therebetween.

11. A can body beading machine comprising a rotatable turret, a plurality of pairs of beading rolls journalled in the turret, each comprising an outer roll supported at one end and having a free end over which the can bodies may be passed and an inner roll, and means for supporting the two ends of each inner roll and for moving the same outwardly into beading contact with a can body on the outer roll, each of said supporting and moving means comprising a hollow depending sleeve guided for radial movement in the turret and having rack teeth thereon, a platform carried by the sleeve pinion means in mesh with said teeth to reciprocate said sleeve and the platform, a bearing bracket, in which the roll is journalled, mounted above the platform and having a stem extending through said sleeve, and spring means between the platform and the bracket.

12. In a can body beading machine of the type wherein a plurality of beading rolls are mounted for radial movement into beading relation to can bodies supported upon mandrels carried in turn by a rotatable turret, improved means for supporting the beading rolls, comprising a platform adjacent each end of each roll having a rack sleeve mounted in the turret, a journal bracket having a stem slidably mounted for coaxial. movement in each sleeve, compression spring means interposed between each platform and each bracket, and pinion means for reciprocating said rack sleeve.

WILTIE I. GLADFELTER. WALTER A. EI-IRLICI-I.

Images