US1538841A - Can-making machine - Google Patents

Description

w. L. RUTKQWSK] May 19, 1925.

CAN MAKING MACHINE Filed March 10, I922 4 Sheets-Sheet 1 m wwmfi? W/7L7'Ef? L. HUT/40 w: H I,

May 19, 1925.

W. L. RUTKOWSKI CAN MAKING MACHINE Filed Mar h 10, 1922 4 Sheets-Sheet 2 May 19, 1925. 1,538,841

W. L. RUTKOWSKI CAN MAKING MACHINE Filed March 10, 1922 4 Sheets-Sheet 5 W %7 yrronwsy.

May 19, 1925.

w. L. RuTKowsKl CAN MAKING MAcHiNE Filed Mar h 10, 1922 4 Sheets-Sheet 4 Patented May 19, 1925.

UNITED STATES PATENT OFFICE.

WALTER, I1. RU'TKOWSKI, OF ST. LOUIS, MISSOURI, ASSIG-NOR TO B. 0. CAN COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION.

CAN 1VIAKII\TG MACHINE.

Application filed March 10, 1922. Serial No. 542,721.

To all whom it may concern:

Be it known that I, VVAL'rnn L. RU'rKow- SKI, residing at i318 Forest Park Boulevard, in the city of St. Louis and State of M- souri, have invented certain new and useful Improvements in Can-Making Machines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to make and use the same. My invention relates to improvements in can making machines and more particularly to machines for ending, or, securing metallic bottoms and tops to can bodies.

My object is to provide a machine of simple construction, for ending cans, whose product is uniform and accomplished with a minimum of waste in material and with a minimum of manual effort.

My invention consists in the novel construction, arrangement and combination of elements as hereinafter fully, clearly and concisely described, definitely pointed out in my claims and illustrated by the accompanying drawings, in Which Fig. 1 is a front elevation of a machine embodying my improvement for simple, single tool, crimping can ends to can bodies.

Fig. 2 is a side elevation of the machine shown in Fig. 1.

Fig. 8 is a plan view, taken on the line 33 of Fig. 1 and on an enlarged scale, showing in detail the means for actuating the crimping rolls or tools.

Fig. 1 is a transverse, sectional elevation of the means for actuating the crimping rolls, or tools as related to the means for holding the can body and can end.

Fig. 5, shows a fragment of a can body and a can end and the crimp on the can end as formed by a tool of which only a'fragment is shown.

Fig. 6 is a detail, plan, view showing means for squaring or truing the crimping chuck, or end holding means.

Fig. 7 shows in side elevation a machine, of the same general design as shown in Figs. 1 and 2, in which there are distinct sets of crimping rools, or tools, for step crimping and means for timing the tool action.

Fig. 8 is a plan view showing the relation of the two sets of tools and their actuating means.

Fig. 9 is a sectional plan view as taken on the line indicated 9-9 of Fig. 7.

F 10 is a rear elevation of the actuating means shown in Fig. 9.

Fig. 11. shows a fragment of a can body and can end as held and formed by the initial tools, and

Fig. 12 is a view similar to Fig. 11 showing the can end as formed by the final tools.

ieferring to the drawings, 15 designates the frame of the machine as shown in Figs. 1 to 6, comprising a sleeve bearing 16 in which is slidably mounted a spindle 17 which carries at its upper end a spindle plate 18 and which plate constitutes the supporting and holding means for the can bodies to be acted upon. The plate 18 is arranged for movements to different altitudinal planes, that is from can supplying and removing position to crimping position and to this end there is provided a lever 19 having a pivotal connection 20 with the recited spindle ].7 and a pivotal support 21, as best shown in Fig. 2. A second lever, 22, connected by means such as the rod 28, with an actuating pedal 24, is pivotally mounted on the recited support 21 and acts upon the lever 19 through a compensating spring 25, and the plate 18 with its actuating levers and pedal are normally held to can supplying and removing position by means such as a spring 26. A sleeve bearing 27 is carried by the machine frame above and in alinement, vertically with the sleeve bearing 16 for the spindle 17, and extended through the bearing 27 is a shaft 28 at the lower end of which is fixed the crimping chuck 29.

The shaft 28, (chuck shaft) is extended through a third bearing 30 and is capable of vertical adjustment relative to the spindle plate 18, for varying depths of can ends, by

means of the clamp- collars 31 and 32, surrounding the shaft 28, at the top of the bearing 30.

Where the can bodies and their ends are of non-circular section it becomes necessary that the crimping chuck 29 precisely registers with the path defining means for the crimping tools, as will hereinafter be made clear, hence I provide a furcated'extension 33 for the collar 31, carrying opposing set screws 34k and 35 arranged to bear against and bottom an abutment 36 carried at the top of the machine frame.

Obviously upon a manipulation of the set scr ws '34 and 35 the chuck shaft 28 may be rotatably adjusted, without vertical disturbance and consequently the chuck 29 brought and held as properly adjusted or set.

Extended through the sleeve bearing 27, surrounding the chuck shaft 28 is a sleeve 37 which is rotated about the shaft 28 through bevel gears 38 and 39 by means of the pulley 4O driven as by a belt from a source of power not shown. As best shown in Figs. 3 and 4 the sleeve 37 is provided with foot flanges 41 to which are pivotaliv mounted a pair of arms 42 which carry the crimping tools 43, each of which comprises an annulus or groove 44 whose sectional contour is shaped to form the desired crimp of the normally flat flange 45 of the can end (as shown in Fig. 4 to the shape oi the finished crimp 46 shown in Fig.

In Fig. 4 I show the tools as held by means such as the springs 47, to their n on-fun.ction ing positions and assuspended, from their carrying arms 42, by pins 48.

For the movement of the tools, or rolls -18, to functioning, or crimping position I provide a cone 49, surrounding each pin 48 and a cam 50 comprising a bevel face for engagement with the cones 49, which cam is contoured to correspond with the margin of the can end to be acted upon by the crimping rolls.

As best shown in Fig. 4 the cam 50 is arranged to move the criinpingtools to crimp, ing positions, against the tension of the springs 47, upon being moved downwardly over the cones 49, and for such movement of the cam I provide a slide-block 5 1, sup.- ported by the machine frame 15, arranged for actuation by the recited pedal 24 through a rod 52 and a lever 53.

The direct support for the cam is, prefer ably, a yoke, such as 54, which is fixed to the slide block 51 and detachahly connected with the cam as by means such as the screws 55.

Th operation of the mnchine'is as follows Assuming the cam 50 to be in its elevated position; the crimping rolls 43 springrheld to noncrimping positions; the crimping chuck 29 properly positioned and fixed; the spindle-plate 18 in its dropped or supplying and removing position, a can body is placed upon the spindle-plate 18, and can end loosely placed over the open, top, end of the can body and assuming further that the crimping rolls 43 are moving through paths defined by the cam 50, the operator depresses the pedal 24 and the machine auto-,

matically f mctions to secure or crimp the can end to the can body.

Through rod 23, lever 22, compensating spring 25, lever 19 and spindle 17 the spindle plate 18 is elevated to bring the can end to the plane of the crimping rolls, (as shown in Fig. 4) and through rod 52, slide-block 51, and yoke 54 the cam 50 is dropped to cause its bevel face to force the crimping rolls 43, through the cones 49, to engage and act upon the flange 45 of the can end.

Upon a release of the pedal, the cam 50 is elevated to permit the crimping rolls to move outwardly through springs 47 and the spindle plate 18 is dropped to ren'ioving and supplying position.

I prefer that the connection between the spindle l7 and lever 19 con' prises means such as the clamp collar whereby the spindle 17 and consequently the can support or plate 18 may be adjusted for adaptation to can bodies of varying heights.

In the form of machine shown in Figs. T to 12, inclusive, I have provided distinct sets, or pairs, of crimping tools for progressive or step action upon the can ends and automatic means for timing the duration of the crimping action. In this form of inachine the sleeve 37, which is identically like the described sleeve 37 in the form of machine shown in Figs. 1 t 6, is PlOVlClQtl with a plurality of pairs of foot flanges 41 for the pivotal support of spring actuated arms 42 arranged to carry pins 48 for suspend ing crimping rolls 43 and 43 The set of rolls 43 as best shown in Fig. 11, act on the flange of the can end to form the initial roll or crimp and the set of rolls 43 act on the roll or crimp to form the finished flat crimp as shown in Fig.

For selective movement of the rolls 43 and 43 to functioning positions the pins :18 carrying the rolls 43 are provided with cones 49 inclining downwardly and outwardly and the pins 48 carrying the rolls 43 are provided with cones 49" inclining inwardly and downwardly. These differently disposed cones are acted upon by a can; having a pair of bevel faces, one of which engages the cones 4 and th other engages the cones 49 The care 50 is carried on a yoke like the described yoke 54 and the yoke carried on a slide block like the described block 51.

In this form of machine the crimping chuck 29, is in all particulars similar to the described crimping chuck; likewise the means for bodily rotating the crimping tools is similar and the spindle-plate 18 and its elevating pedal 24 are similar.

In the described machine the pedal 24 was held by the operator during the crimping interval while in this form of machine the pedal depression serves merely to elevate the spindle-plate to crii'i' ping position and to initiate the movement of automatic means for holding the spindle-plate to crim 'iing position; timing the action oi the crimping tools and restoring all the functioning elements to normal or starting positions.

Such automatic means I prefer to be of a type as shown, including a rock-lever 60, pivotally supported by the machine frame 15, as by a bolt 61, as shown in Figs. 7 and 9, pivotally connected with the slide-block and carrying at its end, opposite the slide block a roller such as 62, for engagement in slotted cam-wheel 63.

For the rotation of the camwheel there is provided a power driven shaft 64, having a worm gear connection with the shaft 65, supporting the cam-wheel 63 which gear is controlled by a clutch 66, connected for ad tuation to clutching position by a rod 67 secured to the pedal 24.

On the shaft 65 supporting the cam wheel 63 is'a second cam vheel 68, in whose pe riphery there is formed a dwell 69, arranged for coaction with a roller 70, bellcrank 71 and rod 72 to hold the pedal 24 elevated during the crimping interval and hence the clutch 66 to in clutch position for the rotation of the cam wheel 63 to move the cam 50, first, to bring the initial tools d3 to functioning positions then the tools 43 to functioning positions, during which interval the cam wheel 68 and bell crank 71, hold the pedal depressed, and consequently the clutch 66 in clutch and the cams 63 and 68 connected with power for their cycle of operation as determined by the movement of the dwell 69.

In both forms of machines illustrated, the can end is backed by the crimping chuck t0 the end that the paper can body is relieved from all torsional strains resultant from the actions of the crimping tools, thereby obviating one source of annoyance incident to other machines for this purpose.

I claim:

1. In a machine of the class described, a support for a can and can end, a crimping tool, means for bodily rotating the tool around the supported can and can end, a lever for supporting the tool, a cone carried by the axis of the tool, an open ringshaped element having an inclined inner surface for engagement with said cone and means for moving the ringshaped element to eifect movement of the tool in a crimping direction.

2. In a machine of the class described a support for a can and can end, a lever, a crimping tool carried by said lever, a cone carried by the axis of the tool, a ring shaped element shaped to define the path of the tool and having oppositely disposed faces for engagement with said cone, mean-s forbodily rotating the tool and means for bodily moving the ring shaped element to effect movement of the tool to crimping or non-crimping position.

3. In a machine of the class described, a crimping tool, means for revolving the tool in a fixed plane, a support for a can and can end, means for varying the plane of the support relative to the plane of the tool, a holding and backing element for the can end fixed in the plane of the tool, an element carried by the axis of the tool, an element having a surface shaped to define the path of and surrounding the axis thereof, means for bodily moving said path defining element to effect movement of the tool to crimping position, and a spring for returning the tool to non-crimping position.

WALTER L. RUTKOVVSKI.

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