US2298366A - Trimming machine - Google Patents

Description

9 Sheets-Sheet l TRIMMING MACHINE Filed June 21, 1940 Oct. 13, 1942.

.wizisie 1. Glaqifelfier Fred i k mam Duhalv.

W. l. GLADFELTER ETAL Oct 13, 1942.

' TRIMMING MACHINE Filed June. 21, 1940 9 Sheets-Sheet 2 Wi i'ie I.Glaq!felber Fredea'ckWilLiangDu/zmb. MM m.

@wqwwgs w. l. GLADFELTER ETAL 98,36

TRIMMING MACHINE Oct. 13, 1942.

- Filed June 21, 1940 9 Sheets-Sheet 5 ammo/WW5 Wi uie LGladfeZl'er Frdez ick William D uhalz.

9 Sheets-Sheet 5 Oct. 13, 1942-. w. l. GLADFELTER ETAL TRIMMING MACHINE Filed June 21, 1940 nijl wewze-zazmg ezw m w W M M W Oct. 13,1942. w. l. GLADFELTER ETAL TRIMMING MACHINE Filed June 21, 1940 9 Sheets-Sheet 6 W zli'ie lGladfell'er Hedgeric/a Williaul/Du/lalo, 1 M M Oct. 13, 1942. w. l. GLADFELTER ET AL 2,298,366

TRIMMING MACHINE Filed June 21, 1940 9 Sheets-Sheet 7 Wil i'ie [.Gladfel ter Frederic/c willia puhan.

9 Sheets-Sheet 8 TRIMMING MACHINE W. I. GLADFELTER ETAL Filed June. 21, 1940 Oct. 13,1942.

. WW L Oct. 13, 1942. w. I. GLADFELTER ET AL 2,293,366

TRIMMING MACHINE Filed June 21, 1940 9 Sheets-Sheet 9 grwq/vvto ns Nil 718 IfG'laeZfelter Frederick Mf'illiam DuhcuL. 14AM.

C'lflwwmgS high speeds;

Patented Oct. 13, 1942 2,298,366 ranmvnno MACHINE 'Wiltie I. Gladfelter han, Philadelphia, & Seal Company,

poration of New York Application June 21, 1940, Serial No. 341,754

19 Claims.

The present invention relates to a machine for trimming and flanging the ends of tubular articles, such as containers for beverages, foodstuffs or the like. More particularly, the invention provides an apparatus that will take a line of container bodies, trim the ends thereof so as to make all portions of the end lie in a plane at right angles to the container axis and then form at the trimmed end, an outwardly turned seaming flange, adapted to receive an end closure member which may be secured thereto by a conventional double seam.

It is an object of the invention to provide a machine of this character which will uniformly and efliclently trim and flange the articles; and which is of simple construction and not likely to get out of order.

It is a further object of the invention to pro.- vide a machine that will operate continuously for long periods of time and which operates on a plurality of articles simultaneously.

It is a further object of the invention to provide improved trimming instrumentalities which will cut off the excess material at the end of an article along a spiral line, and, to this end, the invention provides novel means for feeding the articles as they are being operated upon by the machine.

It is a further object of the invention to provide improved fianging instrumentalities which accurately and efl'iciently turn the material of the containers outwardly to form uniform, accurately positioned flanges at the ends thereof.

It is a further object of the invention to provide improved article handling instrumentalities that will feed the articles into the machine, present them to the trimming devices, withdraw them therefrom, transfer them to the hanging devices and finally discharge them from the machine.

As stated above, the invention contemplates a combined trimming and flanging machine, but it must be understood that the invention is not limited to having the trimming and hanging instrumentalities incorporated in the same machine, since they could readily be separated and incorporated in two separate machines, one to perform the trimming functions and the other the flanging functions.

In the accompanying drawings, an illustrative embodiment of the invention is shown, but the invention is not limited to the details of construction embodied therein, as many modifications will readily occur to those skilled in the art.

which will operate at andFrederick William Du Pa... assignors to Crown Cork Inc.; Baltimore, Md., a cor- All such changes and variations as come within the scope of the appended claims and their equivalents are comprehended by the invention.

In the drawings:

Figure 1 is a side elevation of the machine.-

Figure 2 is an end elevation with certain parts broken away, looking from the left of Figure 1.

Figure 3 is a similar end elevation looking from the right of Figure 1.

Figure 4 is a radial section through the trimming turret, taken substantially at the infeed position.

Figure 5 is a sectional view on an enlarged scale, taken on a plane at right angles to the plane of Figure 4.

Figure 6 is a fragmentary side elevation ofone trimming assembly with the cutters removed.

Figure 7 is a fragmentary section and elevation showing the relation of parts at substantially the commencement of the trimming operation.

Figure 8 is a similar view showing the relation of parts at the conclusion of the trimming operation.

Figure 9 is an end elevation of a trimming assembly.

Figure 10 is a vertical section taken substantially on line l0-l0 of Figure 7.

Figure 11 is an end elevation of one of the can supporting cradles.

Figure 12 is a diagrammatic view of a container, showing the line of cut effected by the apparatus.

Figure 13 is a radial section through the flanging turret, and

Figure 14 is a similar view showing the relation of parts at the conclusion of the flanging operation and substantially at the discharge station.

General description forming a part of the end frame member 22. An infeed transfer dial 24 is mounted upon a rotatable shaft 25 having a spur gear 26 thereon which, in turn, is in mesh with a large gear 21 carried by a rotatable hub 28 connected to and forming a part of the trimmer represented generally at 29. Rotation is imparted to the gear 21 by a spur gear 30 driven by a shaft 3| through a clutch 3la which may be controlled by an operating handle 3"). The shaft 3| carries a pulley 82, connected by means of a plurality s of parallel belts 33 or the like to a driving motor 84.

A transfer dial 35 is mounted upon a shaft 38, Journalled in bearings 31 and positioned to transfer containers from the trimming turret 29 to the flanging turret 38, the latter being mounted upon a shaft 39 Journalled in bearings 48. The shafts 38 and 39 carry intermeshing spur gears 4|, 42, the former being in engagement with the gear 21 on the turret hub 28. The several intermeshing spur gears are of the same radius as the associated turrets and dials, with the result that the turrets and dials all rotate at the same peripheral speed, to effect smooth transfer of the containers from one dial to the next turret and so forth.

Thus, a line of containers 45 moving by gravity down a chute 46 or the like, are picked up one by one by the pockets in the periphery of the infeed dial 24 and are deposited in container receiving cradles, hereinafter described, associated with the trimmer turret 29. The containers are moved along a circular path by the trimmer turret and their ends are evenly trimmed, as hereinafter explained. They are then deposited in peripheral pockets in the transfer dial 35 which carries and deposits them in peripheral pockets in the fianging turret 38. As the containers move in the latter turret, they are engaged by flanging dies hereinafter described and their trimmed ends are flanged. The flanged containers are delivered by the flanging turret 38 to a discharge chute 41, where they roll by gravity to a position to be picked up by a delivery conveyor 48.

The trimming turret The trimming turret 29 comprises a pair of spaced heads 58, 5| connected by a drum 52 and joumalled for rotation about a stationary supporting shaft 53 mounted in the side frame members 2I, 22, rotation being imparted to the heads by the flanged hub member 28.

The turret head 5I carries a plurality of circumferentially arranged article receiving cradles 55, each having a pocket 56 for the reception of one of the containers 45. The cradles 55 are carried by the ends of rods 51, 58 slidably mounted in the front face of the head 5|. The pair of rods are connected intermediate their ends by a cross bar 59, carrying a depending cam following roller 68 disposed in a cam groove 6| in the outer face of a cam barrel 62, the latter being secured to the stationary shaft 53 by a key 63 or any other suitable means to prevent rotation of the cam. The rods 51, 58 have rearwardly projecting portions extending through appropriate apertures in the rear end wall 65 of th turret head 5i. Hence, each cradle is mounted for axial movement relative to the turret head by the rods 51, 58 slidable in the front face of the turret head 5| and in the rear face thereof, the movements, of course, being controlled by the cam groove 6| as the turret rotates relative to the stationary cam barrel 62.

A neck centering plunger 65 for each cradle is mounted in the hollow interior of a rod '66, the

latter being slidably mounted in a bearing sleeve 64 in the hunt head 5I. Each rod 66 at its end remote from the cradle carries a depending cam following roller 61 disposed in a second cam oove 68 formed in the face of the cam barrel 62. As shown in Figure 4, each neck engaging plunger 65 is urged toward the cradle and the escapee associated can by a coil compression spring 88 operating through a cup 18 and a thrust bearing H. The plunger is mounted within bearings 12 for rotation relative to the rod 86.

Containers are placed in the cradles 55 by the infeed dial when the cradles are in the withdrawn position indicated in Figures 4 and 5. It should be noted that, in addition to the pocket forming members 56, each cradle includes an outwardly 0r upwardly projecting stripper element 15 positioned to engage the neck end of a container, whereby the container is supported in predetermined position.

Opposite each cradle there is a trimming assembly mandrel represented generally at 16, onto which the container is transferred by axial movement of the cradle and neck end engaging plunger. Each mandrel 16 is secured upon a shaft 11 by a bolt 18 or the like, the shafts 11 being jourhailed for rotation in bearing assemblies 19, 88 mounted in a sleeve-like casing 8| carried by the other turret head 58 and suitably secured in place as by bolts 82. The shafts 11 at their outer ends carry planetary pinions 85 in mesh with a stationary orbit gear 86, formed on an outwardly projecting, stationary head 81, keyed to the shaft 53. Hence, as the turret head 58 revolves about the axis of the shaft 53, planetary rotation is imparted to the shafts 11 and the mandrels 16.

Each mandrel comprises a central supporting sleeve 88 fixed to the shaft 11, a fixed peripheral member 89 and an axially movable end sleeve 98. the latter being urged outwardly by a coil compression spring 9|. At the rear end of the mandrel proper, a cutting disc 92, having a sharp cutting edge 83 is keyed to the shaft 11.

The sleeve-like casing 8| has a laterally projecting portion 94 in which a stub shaft is Journalled for rotation in bearing assemblies 96, 91, the open end of the lateral extension being closed by a plate 98 appropriately secured in place by screws 99 or the like. The stub shaft 95 carries a pinion I 88 in mesh with a similar pinion I8I keyed to the shaft 11. A cutting disc I82 is keyed upon the reduced portion I83 of the stub shaft 95 in shearing relation to the edge 93 of the first-mentioned cutting disc 92. The stub shaft 95 also carries a radially displaceable friction producing roller I84, having its periphery opposite the periphery of the cutting disc 92, the roller I82 having a serpentine leaf spring I85 interposed between its enlarged bore and a central sleeve I 86 carried by a cap I81 secured to the stub shaft 95 by a bolt I88 threaded into the end of the shaft.

As indicated in Figure 6, the axis of the stub shaft 95 is slightly out of parallelism with the axis of the shaft 11, with the result that the cutting discs 92 and I82 are angularly disposed with respect to each other, whereby an improved shearing action is produced. Also, the friction roller I84 and the periphery of the disc 92 rotate on angularly disposed cylindrical surfaces, so that the friction roller tends to feed or draw the containers axially toward the cutting knives. Preferably, the angle between the axes of the stub shaft 95 and the mandrel supporting shaft 11 is 1%".

The closure plate 98 for the lateral extension 94 of the casing 8I carries a substantially radially projecting scrap guide II8 (Figs. 9 and 10) which has an end Portion II I adjacent a portion of the shaft 11 and disposed opposite the periphery of the cutting disc I82. The adjacent face II 2 of the guide is bevelled as indicated. so

parallelism,

cut from the end of the container is that scrap straightened out, guided away from the cutting edges of the discs and discharged from the machine by force imparted thereto as a result of the rapid rotation of the mandrel I6 and the container thereon.

- The mandrel supporting shaft 11, as stated above, is iournalled for rotationin the casing by bearings I9, 00. An oil seal H is interposed between the opening in the casing and the periphery of the gear IOI secured to the shaft. The gear is prevented from rotation relative to the shaft by a conventional key and keyway assembly II! and is pressed firmly against the inner race of the bearing assembly by a nut I" screwed upon a threaded portion II3 of the shaft 11, the nut being held in place by a lock washer II9 of a well known type. A similar oil seal I20 (Fig. 4) is provided at the other end of thecasing lI, adjacent the planetary pinion 05.

An oil seal I2I is provided betwee the periphery of the stub shaft 95 and the opening in the plate 90, behind the cutting disc I02. Thus, all of the bearings associated with each trimming assembly are housed and sealed within one of the casings 3i and the lateral extensions 94 thereof.

Operation of trimming turret It will be understood that, as the trimming turret revolves continuously about the axis of the stationary shaft 53, the several pairs of cutting discs 92, I02, disposed in shearing relation, are rapidly rotated in opposite directions about their axes, rotation being imparted thereto by the planetary pinions 05 in mesh with the stationary orbit gear 95 and the intermeshing spur gears I00, IOI keyed respectively upon the shafts 95 and II. The teeth on these gears are pitched l /4" out of to accommodate the angular disposition of the axes of the shafts I1, 95.

As the turret rotates, the cam 51 advances each neck centering plunger 05 into engagement with the neck end 45:: of the associated container and slightly lifts that end out of engagement with the supporting stripper plate 15. The cradle; the container and the neck plunger are then advanced in unison by the cam grooves GI, 53 with the result that the open end 45b of the container is placed upon the sleeve 90 of the mandrel 16. The mandrel is so disposed with respect to the cradle that the container is lifted slightly out of contact with the cradle as it is moved upon the mandrel. It will be understood, of course, that the mandrel is at this time rotating rapidly about its own axis, whereupon rotation is imparted to the container and the neck centering plunger 55.

The cams 5|, 53 continue to advance the container until the bottom end 45b thereof enters between the periphery of the cutting disc 92 and the friction roller I04. The angular relation between the peripheries of these members serves to assist in advancing the containers into the bight between the cutters 92, I02. As the container and the cutters rotate, the container is fed longitudinally with respect to the cutters, with the result that a spiral strip is trimmed from the end of the containers, as indicated at I25 in Figure 12.

At substantially the commencement of this shearing operation, the conical end 450 of the container abuts the bevelled end of the axially movable mandrel sleeve 90, as indicated in Figure 7. As the advance of the container continues, the sleeve 90 moves axially of the man- 'drel and the spiral strip I25 is cut from the rear end thereof. When the sleeve has moved to the position indicated in Figure 8', the conical end 450 abuts the inclined end of the inner, axially fixed mandrel sleeve 93 which limits the movement of the container toward the cutting discs, thereby defining accurately the height or length of the cylindrical side wall of the container body and causing the cutting discs to trim the end of the container on a circular line disposed in a plane normal to the axis of the container body.

The relation between the cams iii, 53 and the planetary gears 85, is such that each container is preferably rotated at least three and one-half times during the trimming operation. It has been found that this number of rotations is sufficient to produce a spiral out of desired width and to make certain that the end of the can is trimmed off square wit the axis.

The spiral str llp I25 'cut from the end 451) of the container is brown outwardly under considerable force and at high speed as a result of the rapid rotation of the mandrel and the cutters. The surface I I2 of the guide piece III straightens out the strip and guides it away from the machine, preventing the strip from being wound around the shaft 11 or-otherwise fouling the cutting assemblies.

At the conclusion of this number of rotations, the neck centering plunger 55 and the cradle 55 are retracted, preferably simultaneously, with the result that the stripper plate in engagement with the neck 45a of the container withdraws the container from the mandrel 15. When the cradle reaches its original position, the neck centering plunger 55 is withdrawn further, thereby leaving the container in the cradle for transfer to the transfer dial 35, suitable guides being provided to prevent the containers dropping out of the cradles prematurely.

The containers are received in pockets I23 in the transfer dial 35 (Fig. 1) and are carried around under a guide I29 to the fianging turret 38, where they are received in pockets I30, above a guide I3I.

The flanging turret The flanging turret 38 comprises a pair of drums I35, I35 having radial heads I39, I40 integral with sleeves I4I, I42 keyed to the rotatable turret shaft 39, mentioned above. The sleeves I4I, I42 have radial flanges I43, I44, the latter of which carry spiders or dial plates I45, I46, in the periphery of which, the article receiving pockets I30, previously mentioned, are formed.

The drum or head I39 is provided with a plurality of parallel, axially disposed sleeves I49, in each of which there is disposed a chuck carrying plunger I49, the chucks I50 being secured thereto by pins I5I having their rear ends I52 threaded into plugs I53, the latter being, in turn, threaded into the hollow bores of the plungers I49. Each chuck I50 has a centrally bored rear end I54, through which the pin I5I projects, and an open front end terminating in a conical seat I55 adapted to receive and closely fit the conical end 450 of the container to be flanged. The

peripheral wall of the chuck I50 is slotted as at I55 and a stripper arm I51 having a forwardly turned portion I58 and a neck engaging end I59 projects therethrough. The stripper arm is secured to the radial web or flange I43 associated with the sleeve I4.

At its rear end, the plug I53 carries a pair of radially projecting trunnions I30, IBI, in

which a pin I52 is mounted, the latter carrying a pair of cam following rollers I83, I54, disposed respectively in engagement with cams I55, I58 carried by a radial flange I51 secured by bolts I68 to the stationary bearing 40 for the shaft 39. The cam I68 serves to advance the plunger I49 and the chuck I50 into engagement with the container 45, as shown in Figure 13, while the cam I55 retracts the plunger and the chuck t the position shown in Figure 14. V

The pin I52 at its forward end terminates in a neck centering portion I which, upon advance of the chuck, enters the neck 45a of the container 45 and accurately centers the container with respect to the chuck and prevents movement of the neck away from the stripper I59.

The head I40 (Fig. 14) of the turret head I38 is provided with a plurality of axial sleeves I15,

generally similar to the sleeves I48 of the turret head I35. In each sleeve there is mounted for axial movement a cylindrical slide I16 having a plug I11 threaded therein, the latter being provided with rearwardly projecting trunnions I18, I19, carrying a pin I80 upon which cam following rollers I8I, I82 are joumalled, in engagement, respectively. with cams I83, I84, carried by a radial flange I85, secured to the adjacent hearing 40, not shown in Figure 14.

The plug I11 associated with the slidable plunger I18 is internally threaded as indicated at I85, and a bolt I81 serves to secure a flanging die I88 and a cup I89 to the plunger. The com and the cam following roller I82 serve to advance the slidable plunger I16 and the flanging die I88 into end-flanging relation, as shown in Figure 13, while the cam I83 and the cam following roller I8I retract the plunger and the die to the position shown in Figure 14.

Operation of flanging turret It will be understood that the cams I55, I55 and I83, I84 are so constructed that at the time that each flanging die is advanced into engagement with the trimmed end of a container, associated neck centering pin I10 and chuck I58 are in centering and supporting relation to the opposite end of the container. The cylindrical head I90 of the die I88 enters the open end of the can in closely fitting relation and advances until thetrimmed end of the container enters the flanging groove I9I. As the movement continues, the end of the can is turned outwardly, until it abuts the interior cylindrical wall of the cup I89, whereupon the flanging is complete, as shown in Figure 13 and in dotted lines in Figure 14.

As cam I83 withdraws each flanging die I88, the container is prevented from moving therewith by the stripper I59 disposed in the groove in the neck end 45a of the container. It will be understood that, at this time, the neck centering pin I10 is still in engagement with the neck, thereby holding the same in engagement with the stripper. I59 to assist ,the latter in performing its stripping function.

As soon as the flanging die has moved out of engagement with the container, the cam I55 withdraws the chuck I50 and the pin I10. The container, held in the pocket I30 in the dial plates I45, I45 by the guide rail I3I, is then moved to the position indicated at I95 in Figure 1.

Discharge mechanism At this point, an ejector strap I95 moves each container radially outwardly from its pocket onto the discharge chute 41. The elector strap I98 may conveniently be carried by a depending arm I91 associated with a bracket I98 having arms mounted respectively upon the machine frame and the stationary shaft 53. The cans roll down the outfeed conveyor 41 by gravity until then engage a spring supported strap 200 which moves them into engagement with a continuously moving belt 20I, urged toward a stationary, vertically disposed plate or board 202 by leaf springs 203 or the like. The belt 20I rolls the containers vertically along the conveyor board 202 to a chute 205, which carries the containers to the next machine in the line.

Although the machine of the present application has been described with considerable particularity, it must be understood that the invention is not limited to the details of construction shown in the accompanying drawings and described above, but covers all modifications coming within the scope of the appended claims and their equivalents.

We claim:

1. An apparatus for trimming, the ends of cylindrical bodies, comprising a turret having a pair of heads mounted for rotation in parallel planes, article receiving means mounted on one head, trimming means on the other head in alignment with said article receiving means, means for relatively moving the articles and the trimming means into cooperative relation as the heads rotate, means for producing relative movement between the means to trim the ends of the articles, and means for discharging the articles from the machine.

2. An apparatus for trimming the ends of cylindrical bodies, comprising a rotatably mounted turret having a pair of coaxially spaced heads, a plurality of article receiving means mounted on one head, a corresponding series of mandrels on the other head aligned therewith, means for advancing the articles onto the mandrels, means for rotating the mandrels and the articles, and cutting discs associated with the mandrels to trim the ends of the articles advanced thereon.

3. An apparatus for trimming the ends of cylindrical bodies, comprising a rotatably mounted turret having a pair of spaced heads, a plurality of article receiving cradles carried by one head, a plurality of mandrels aligned therewith and carried by the other head, means for advancing the cradles to position the articles upon the mandrels, means for rotating the mandrels and the articles, and a cutting disc associated with each mandrel and positioned to trim the end of an article on the mandrel during rotation thereof.

4. A machine fortrimming the ends of cylindrical articles, comprising an article receiving cradle, a mandrel aligned with the cradle and spaced therefrom, a cutting disc at the rear end of the mandrel, a second cutting disc disposed substantially tangentially to the first-mentioned disc, means for advancing the article longitudin'ally of the mandrels to cause the end thereof to enter the bight between said discs, means for rotating the mandrel, the first disc and the container in one direction and the other disc in the opposite direction, and means for feeding the article lengthwise relative to the discs a predetermined distance to trim a predetermined amount therefrom.

5. A machine for trimming the ends of cylinarticles and the trimming bers carried by drical articles, comprising a pair of rotatably mounted coaxially spaced heads, a plurality of article receiving cradles carried by one head, article receiving mandrels aligned therewith and carried by the other head, cutting discs associated with the mandrels, means for rotating the mandrels and the discs, means for advancing the cradles to cause the articles to be supported for rotation by the mandrels, and to move the ends of the articles into engagement with the discs to trim the ends of the articles during rotation thereof, and means for removing the trimmed articles from the mandrels.

6. A machine for trimming the ends of cylindrical articles, comprising a pair of rotatably mounted coaxial heads, a series of pockets on one head for receiving a plurality of articles, a series of rotatable article end engaging memthat head in alignment with articles in said pockets, a corresponding series of mandrels carried by the other head in alignment with said members, a rotatable cutter associated with each mandrel, means for rotating the mandrels and the cutters, means for advancing said members to transfer the articles to said mandrels for rotation therewith and to feed the remote ends of the articles into cutting relation to said cutter, whereby said ends of the articles are trimmed, and means for removing the trimmed articles from the mandrels.

'7. A machine for trimming the ends of cylindrical articles, comprising a pair of coaxially arranged rotatable heads, a plurality of longitudinally movable article receiving cradles carried by one head, rotatably mounted mandrels carried by said head and adapted to support the adjacent ends of the articles in the cradles, a plurality of rotating mandrels carried by the other head in alignment with the first-mentioned mandrels, cutters associated with the lastmentioned mandrels, means for longitudinally advancing the first-mentioned mandrels and said cradles to support the articles for rotation jointly by the first and second mandrels, and means for rotating the mandrels to trim the secondmentioned ends of the articles.

8. In a machine for trimming the ends of cylindrical articles, comprising a pair of coaxially revolvable heads, a plurality of axially movable, article receiving cradles carried by one head, rotatably mounted mandrels carried by said head and adapted to support the adjacent ends of the articles in the cradles, a plurality of rotatable mandrels carried by the other head in alignment with the cradles, a plurality of pairs 'of rotatable cutters on the .second head, one cutter of each pair being coaxially'aligned with one of the secondmentioned mandrels, means for longitudinally advancing the first-mentioned mandrels to push the articles onto the second mandrels with the ends of the articles disposed exteriorly of the coaxially aligned cutters, and means for rotating the mandrels and said cutters to trim the ends of the articles.

9. A machine for trimming the ends of cylindrical containers, comprising a plurality of container receiving cradles, a plurality of rotatably mounted centering plungers, means for advancing the latter relative to the cradles to engage the adjacent ends of the containers supported therein, a plurality of mandrels adapted to interiorly support the containers, means formoving the cradles and the plungers toward the mandrels to place the containers thereon and other ends of the articles in the to support the same out of contact with the cradles, trimming means at the rear end of each mandrel, means for rotating the mandrels and the trimming means, and means for advancing the articles relative to the cutting means to trim the ends thereof.

' 10. A machine for trimming the ends of cylindrical articles, comprising a pair of coaxially arranged, spaced apart rotatable heads, a plurality of axially movable article receiving cradles carried by ,one head, a plurality of trimming instrumentalities aligned therewith and carried by the other head, infeed and outfeed dials aligned with the cradles in their normal position, means for rotating the heads and the dials to deposit articles in said cradles and to remove the same therefrom, means for advancing the cradles and the articles into cooperative relation to the cutting instrumentalities on the second head during rotation of the heads, means for actuating the cutting instrumentalities to trim the ends of the articles, and means for retracting the cradles and the trimmed articles to the normal position in alignment with the outfeed dial.

11. A machine for trimming the ends of containers, comprising a pair of coaxially arranged rotatable heads, article receiving and supporting means carried by one head, a plurality of pairs of rotatable cutting discs aligned therewith and carried by the other head for revolution therewith, means for rotating the heads, means actuated by said rotation for advancing the articles into cooperative relation to the pairs of cutting discs aligned therewith, and means for rotating the cutting discs when in that relation, to trim the ends of the containers.

12. A machine for trimming the ends of containers, comprising a pair of coaxially arranged rotatable heads, article receiving and supporting means carried by one head, a plurality of pairs of cutting discs aligned therewith and carried by the other head, means for rotating the heads, means actuated by said rotation for advancing the articles into cooperative relation to the cutting discs, a stationary gear, and planetary gears in mesh with said gear and operatively connected to said cutting discs for rotating the latter during rotation of the secondmentioned head.

13. A machine for tainers, comprising a pair rotatable heads, axially movable, article receiving and supporting means carried by one head, a plurality of pairs of cutting discs aligned therewith and carried by the other head, means for rotating the heads, a stationary cam, and cam following means carried by the firstmentioned head and connected to the article supporting means for imparting axial movements to the latter into and out of cooperative relative to said discs during rotation of said head.

14. tainers, comprising a trimming the ends of conof coaxially arranged A machine for trimming the ends of conpair of coaxially arranged rotatable heads, article receiving and supporting means carried by one head, a plurality of pairs of cutting discs aligned therewith and carried by the other head, means for rotating the heads, means actuated by said rotation ior advancing the articles into cooperative relation to the cutting discs, a stationary orbit gear, and planetary gears in mesh with said orbit gear and operatively connected to said cutting discs for rotating the latter during rotation of the second-mentioned head.

15. A machine for trimming the ends of cylindrical articles, comprising a revolvable head, a plurality of pairs of rotatable spindles carried thereby, cutting discs carried by the spindles in shearing relation, meshing spur gears carried by the spindles, a stationary gear, a planetary gear in mesh therewith carried by one spindle of each pair, whereby, upon rotation of the head, said spindles and cutting discs are rotated, and means for feeding the ends of containers into shearing relation between said discs during rotation of the head.

16. A machine for trimming the ends of cylindrical articles, comprising a revolvable head, a plurality of pairs of rotatable spindles journalled for rotation therein, a pair of cutting discs disposed in shearing relation carried by each pair of spindles, means connecting said spindles for rotation in opposite directions, a stationary orbit gear concentric to the path of revolution of the spindles, a planetary gear carried by one spindle in mesh with said orbit gear, whereby, upon rotation of the head, said spindles and cutting discs are rotated, and means for i'eeding the ends of containers into shearing relation between said discs during rotation of thelhead.

17. In a machine for trimming the ends of tubular articles, a mandrel, means 'for advancing an article longitudinally of the mandrel to be supported thereon, a circular cutting edge associated with the mandrel, a cutting disc disposed in shearing relation to said edge, a friction roller disposed opposite the mandrel with its surface positioned to grip the article supported on the mandrel, and means for rotating the mandrel, the roller and said disc, said roller being rotatable upon an axis inclined angularly with respect to the axis of the mandrel, whereby, upon rotation of the roller and the mandrel, a longitudinal component of movement is imparted to the article gripped therebetween.

18. A machine for trimming the bottom ends of drawn seamless container bodies, comprising cradles for receiving the bodies in horizontal relation, mandrels upon which the bodies are placed by forward endwise movement of the cradles, cutting discs associated with the mandrels and positioned to trim the bottom ends of the bodies while on the mandrels, and means carried by the cradles for engaging the neck ends of the containers and stripping the same from the mandrels upon rearward movement of the cradles.

19. A machine for trimming the open bottom ends of drawn seamless containers having coneshaped upper ends terminating in necks or reduced diameter, comprising rotatably mounted neck engaging plungers, rotatable mandrels aligned with the plungers and adapted to enter the open bottom ends of the containers, cutting discs associated with the mandrels for trimming the ends of the containers, means for relatively converging the plungers and the mandrels to support the containers thereby and to move the containers into cooperative relation to the cutting discs and means for rotating the mandrels, the plungers, the containers supported thereby, and thediscs.

WILTIE I. GLADFEL'I'ER. FREDERICK WILLIAM DUHAN.

Images