US1715847A - Barrel-seaming machine - Google Patents

Description

J 1929. B. 'J. UNDGREN 1715.s41

BARRELL SEAMING MACHINE Fil ed July 25, 1927 4 Sheets-Sheet 1 June 4, 1929. B. J. LINDGREN 1,715,847

BARREL SEAMING MACHINE Filed July .25, 1927 4 Sheets-Sheet .2

June 4, 1929.

B. J. LINDGREN BARREL SEAMING MACHINE 4 Sheets-Sheet I5 Filed July 25, 1927 June 4, 1929. B, LINDGREN 1,715,847

BARREL SEAMING MACHINE Filed July 25, 1927 4 Sheeizs-Sheet 4 Patented June 4, 1929.

v 1,715,847 UNITED STATES PATENT ,OFFICE'.

' BROR J'." LINDGREN, OF BUFFALO, NEW YORK, ASSIGNOR TO 'NIAGARA MACHINE &

TOOL WORKS, OF BUFFALO, NEW YORK, ,A CORPORATION OF NEW YORK..

, IBARREL-SEAHING MACHINE.

.-App1icati on filed July 25, 1927. Serial N'o. 208,080.

This invention relates to a barrel seaming machine andmoreparticularly to a machine of the character 'whichZs-imultaneously connects sheet metal-headswith opposite ends of a sheet metal body and which is gen-- erally known as a double seamer.

A machine of this type is shown in Letters Patent No. IatSGQ 'MMar. 18, 1924., andthe present, invention relates to improvements therein.

The object of the present invention is to improve the means whereby the chucks are moved one relatively to another for gripping and releasing the barrel; also to improve the means for actuating the tools or rolls for seaming the joints between the body and the heads; also to provide automaticstop mechanism which limits the movement of the chucks one toward and from the other; also to provide automatic stop mechanism for arresting the operation of the seaming mechanism at the end of each cycle of'seaming operations, and to improve the machine in various details of construction.

In the accompanying drawings Figure 1 is a front elevation ofa barrel seaming machine embodying my invention.

Figure-2 is a fragmentary rear elevation of the upper part of the same.

Figure 3 is a fragmentary vertical cross section taken on line 3-3 Fig. 2.

Figure 4 is a vertical longitudinal section taken centrally through the machine.

Figure 5 is a fragmentary rear elevationof the lower part of the machine.

Figure 6 is an end elevation of the machine viewed from the left hand end of the same.

Figure 7 is a vertical cross-section taken 1 on line 77 Fig. 1, and showing one of the turning or preliminary rolls in its operative position. p

Figure 8 is a similar view showing one of the setting down or finishing. rolls in it operative position.

Figure 9 is a horizontal section taken on line 99 Fig. 1.

Figure 10 is a fragmentary vertical longitudinal section taken on line 1010 Fig. 7.

Figure 11 is a fragmentary vertical transverse sectiontaken on line 1111 Fig. 10.

Figure 12 is a horizontal section taken on line 1212 Fig. 10.

Figure 13 is a fragmentary vertical transverse section taken on line 13-13 Fig. 2.

Figure 14 is a fragmentary vertical longitudinal section taken on line 1414 Fig. 13. Figu'res'15 and 16 are views similar to Fig. 14 but showing different positions of the arts.

Figure 17 isa fragmentary sectional view showing the body or drum and one head of the barrel mounted on a chuck-preparatory to seaming them together. Figures 18 and 19 are similar views showing the successive operations of curling the co-operating flanges of the body and head by the turning roll, and then tightening or flattening the same by the finishing roll.

Figures 20 and 21 are perspective views ,of the two parts of one of the trunnion nuts whereby each of the roll supporting slides is pivotally and adjustably connected with the companion rock arm whereby the same is actuated.

Similar characters of reference indicate like parts in the several figures of the drawmgs.

The barrel or cask which is to be operated upon in this seaming machine for the purpose of connecting the body or. drum and the heads thereof consists in the present instance of a cylindrical body 30 of sheet metal and two disk-shaped heads 31 also of sheet metal secured to opposite ends of the body. The latter is provided at its opposite ends with integral laterally projecting circumferential flanges 32 and each of the heads is provided at its edge with an annular flange 33 supporting ring 34 of a rotary chuckand the body is engaged on the inner side'at each of its ends with the outer side of one of the heads, asshown in Fig. 17-. After the bodyv and heads have been assembled and they'are rotating about the axis of the barrel, the opposite ends of the-latter are presented to two preliminary seaming rollers 35, each'of which is adapted torotate in engagement with the flanges of the body and head of one end' of the barrel and produce a curl or partial interlock in the same, as shown in Fig. 18.

Thereafter, and 'whilethe barrel is rotating with the "chuck, the partly seamed" flanges and heads at each end of the barrel are engaged by a finishing seaming roll 36 which rotates in engagement with these flanges and operates to press the same into a fiat condition and cause them to engage firmly with each other and finish the interlocking of the same, as shown in Fig. 19.

The main frame of the machine comprises a horizontal base-37 and two standards 38, 39 mounted on the front and rear ends of the base. The front standard 38 is preferably fixed'on the base while the rear standard 39 slides at its lower end on a guideway or track 40 upon which the same is 'movable lengthwise of the machine to permit of adapting the same in the manufacture of barrels of different lengths. The numerals 41 and 42 represent front and rear chuck shafts or spindles which are arranged horizontally and lengthwise in line with each other, the front shaft 41 being journa-led in a bearing in the lower part of the front standard and the rear chuck shaft 42 being journaled in a bearing in the lower part of the rear standard. Each of these chuck shafts is provided at its inner end with a chuck having the form of a disk 43 upon which one of the supporting rings 34 is removably mounted so as to permit rings of different sizes to be employed for making barrels of different diameters.

The numeral 44 represents the main driving shaft of the machine which is journaled horizontally and lengthwise in bearings on the base and provided with front and rear driving pinions 45, 46, the front pinion 45 being secured to this shaft while the rear pinion 46 is splined on this shaft so as to permit the same to move lengthwise thereon, but compel the same to turn therewith. The driving shaft may be operated by the power of a prime mover of any suitable character which latter is connected with this shaft in any approved manner.

The transmission mechanism which is interposed between this prime mover and the driving shaft 44 includes a clutch not shown in the drawings, which clutch is controlled by means of a hand lever 29 connected with this clutch by means of a shipper rod 28, so that the movement of the driving shaft and the machine as a whole may be started or stopped at will.

The front chuck shaft and the parts associated therewith are held against longitudinal movement but the rear chuck shaft is mounted on the rear standard so as to be A capable of turning therein but held against longitudinal movement for the purpose of permitting the rear chuck mounted thereon to be moved toward and from the front chuck in order to grip the barrel between the chucks for performing the seaming operations thereon and then releasing the barrel after the seaming operations have been completed.

Motion is transmitted from the driving shaft to the driven shaft 41 of the front chuck by means of an intermediate shaft 47 journaled horizontally and lengthwise on the front standard and provided with an intermediate gear wheel 48 which meshes with its underside with the front driving gear pinion 45 while its upper side meshes with a driven gear wheel 27 on the front chuck shaft 41. Motion is transmitted from the driving shaft to the rear chuck shaft 42 by means of an intermediate shaft 49 journaled horizontally and lengthwise on the rear standard and provided with an intermediate gear wheel 50 which meshes on its underside with the rear driving pinion 46 and on its upper side with a driven gear wheel 51 secured to the rear chuck shaft 42. As the rear standard 39 is moved lengthwise of the machine for the purpose of engaging the barrel to be operated upon and releasing the same after it is finished, the driving gear pinion 46 is compelled to move forwardly and backwardly with the rear standard by means of two brackets 52 arranged on the lower part of the rear standard and provided with bearings 53 which are arranged on opposite sides of the rear driving gear wheel 46 and support the adjacent parts of the driving shaft, as shown in Fig. 4.

The advancing and retracting motion of the rear standard and the parts mounted thereon are preferably accomplished by the following means The numeral 54 represents a crank shaft which is journaled horizontally and transversely in an extension 55 on the front end of the frame which extension preferably has the form of a house. On opposite ends of this crank shaft the same is provided with two disks 56, 57 preferably arranged on opposite sides of the extension 55 and each of these disks being provided with a crank 58. Extending lengthwise through the base of the machine and arranged along opposite sides of the driving shaft 44 mounted centrally therein, are two shifting rods 59 each of which is connected at its front end with the crank on one of the disks 56, 57 while its rear end is connected with the rear standard so that upon rocking the shaft 54 the rear standard will be moved forwardly and backwardly for the purpose of bringing the operating parts on the rear standard into engagement with the rear end of the barrel and disengaging the same therefrom. The connection between each of the shifting rods is preferably so constructed that this rod can swing vertically relativelvto this standard and the lattercan also; e. adjusted 'on" this rod for the purpose ofzadaptingl thema chine to barrels varyingin length. Inthe preferred form this pivotal and adjustable connection between each shifting rod and the rear standard is constructed as follows The numeral 60 represents a pivot block having an opening in its lower part through which the rear screw thread end 61 of one of the shifting rods passes while the upper part of this block is pivoted on the adjacent part of the rear standard by means of a trans verse pivot pin 62. On opposite sides of the pivot block 60 the shifting rod 61 is provided with adjusting screw nuts 63 which upon being turned in one direction or another will cause the rear standard to be adjusted lengthwise forwardly or backwardly on the base in order to adapt the same to a particular length of barrel which is being operated upon, these adjusting screw nuts being held in place after adjustment by means of clamping bolts 64, as best shown in Fig. 4. I

The rocking motion of the crank shaft 54 is so determined that it turns back and. forth through an arc of 180 and this rocking motion terminates on horizontally opposite sides of the axis of this shaft so that when this shaft is turned forwardly the cranks 58 will be in their extreme relation to the crank shaft and horizontally in line therewith as shown in Figs. 1 and 4, at which time the rear standard is moved forwardly so that the working parts thereon are in operative relation to the rear end of the barrel. During the backward rocking stroke of the rock shaft 54 the cranks 58 are moved into their rearmost position relative to the crank shaft which is diametrically opposite to the foremost position of the same, whereby the rear standard is moved rearwardly through the medium of the shifting rods 59, thereby releasing the barrel which has been operated upon and permitting a new unseamed barrel to take its place. This alternate rocking of the shaft 54 is effected by motion derived from the main shaft 44, which motion is transmitted by a mechanism which includes clutches and a reversing gearing whereby the connection between the driving shaft and the preferably constructed as follows The numeral represents an upright clutch shaft journaled in the frame eXten-' sion 55 and provided at its lower end with a worm 66 meshing with a worm wheel 67 on the crank shaft 54. On the outer or front end of the intermediate shaft 47 the same is provided with a central beveled gear wheel 68 which latter meshes on its lowerside with a lower beveled gear wheel 69 and on its upper side with an upper beveled gear wheel 70, said lower and upper gear wheels 69 and 70 being mounted loosely on the clutch shaft 65 and rotated in opposite directions by an intermediatedriving beveled gear wheel 68 between the same. Between the upper and lowergear wheels 69 and 70 two clutches 71 and 72 are mounted on the clutch shaft 65, the lower clutch 71 being adapted to connect and disconnect this clutch shaft with the lower beveled gear wheel 69, and the upper clutch 70 being adapted to connect and disconnect the upper- 'front end this clutch controlling shaft 73 is provided with a hand lever'75 whereby the clutch controlling shaft 73 may be turned manuallyfor coupling either of the clutches,

71 or 72. In the position of the parts shown in Fig. 4 the clutch rock arm 74 is in its central position so that both clutches 71 and 72 are uncoupled and no motion is transmitted from the intermediate shaft 47 to the clutch shaft 65 at which time the crankshaft 54 is at rest at either extreme of its rocking motion and the rear standard is at rest either in its forward or rearward position.

Upon coupling the lower clutch 71 the crank shaft 54 is turned in the direction for moving the rear standard forwardly and upon coupling the upper clutch 72 the crank shaft 54 is turned in the direction for moving the rear standard backwardly.

The shifting of the clutches 71 and 72 out of their neutral position forthe purpose of causing the crank shaft to turn in one direction or the other for causing the longitudinal movement of therea-r standard to begin is preferably effected manually but the stopping of. the rocking motion of the crank shaft at either extremes of its stroke is pref erably effected automatically and thereby not only relieves the attendant from this Work but also assures stopping of the longitudinal movement of the rear standard at the end of its forward and backward strokes without depending on the attendant.

The preferred means for accomplishing this purpose consists inproviding one of the crank disks 56 on its periphery with two tappets or shoulders 76, 77 which are arranged on diametrically opposite sides of the disk 56 and face circumferentially in opposite directions and are adapted to en gage alternately with opposite sides of a tappet or throw-out lever 78. arranged on the adjacent part of the clutch controlling lever 73. It follows from this construction that if the clutch controlling shaft 73 has been turned manually in the direction for moving the rear standard backwardly, as

which the shifting arm 74 is arranged in a horizontal or neutral position as shown by full lines in Fig. 4 and the upper clutch 72 will be disengaged so as to arrest the rotation of the crank shaft 54 the instant that the rear standard 59 reaches its rearmost position.

After the rock shaft 7 3 has been turned in the direction for couplingthe lower clutch 71 the throw-out or restoring arm 78 will be turned manually in the opposite direction from, its central position and as the cranks 58 move from the rear side of the crank shaft 54 to the front side of the same the front restoring shoulder or tappet 77 on the respective crank disk 56 will engage with the opposite side of'the restoring arm 78 and move the same from its operative position back to its central or neutral position and thereby uncouple the clutch 71 so that the crank shaft will be arrested in its rotation when the cranks 58' are in their foremost position, as shown in Figs. 1 and 4, and

the rear standard has been moved forwardly into its operative position.

Adjacent tothe inner side of the upper part of each standard is arranged one of the preliminary seaming rolls and one of the finishing rolls 38, these rolls being arranged above the adjacent chuck and in spaced relation circumferentially so that the seam of these rolls may engage independ-' ently of each other with the flanges of the body or drumand head on the correspondcessive curling" and finishingoperations on the seamed joint at the respective end of the barrel.

Each of these rolls is so mounted and operated that the same is moved periodically toward and from the flanges on the respective ends'of the barrel members and the same is also capable of bodily adjustment radially on the axis of the barrel for adapting this roll to the fiangeson the corresponding end thereof in order to permit of scaming barrels of different diameters and alsoto facilitate setting up the machine and taking up wear. The particular embodiment of this'mechanism is constructed as follows:

The numer l '79 represents a camshaft arranged h izontally and lengthwise of the machine and j ournaled in bearings 80.

ing end of the'barrel for producing the suc-' ing mounted in such manner that the same is only capable of turning in the front standard but incapable of sliding lengthwise.

therein, but it is capable of both turning anal sliding in the bearing of the rear standar This shaft is rotated once for each cycle of operations of the machine and preferably derives its motion from the main shaft by means of a transmitting mechanism which may be of any suitable construction, but in the present case this transmitting mechanism preferably consists of a horizontal longitudinal clutch. shaft 82 journaled in suitable bearings on the front standard and provided with a gear wheel 83 which meshes with a gear pinion 84 on the front chuck shaft 41, an intermediate shaft 85 journaled horizontally and lengthwise on the front standard and provided with a gear wheel 86 which meshes with a gear pinion 87 on the clutch shaft 82 and also provided with a gear pinion 88 which meshes with a gear wheel 89 on the front end of the cam shaft 79, and

a clutch-90 adapted to connect and discon nect the clutch shaft 82 and the gear wheel 83. This clutch is operated by means of a rock arm 91 which is secured to a rock shaft 92 journaled horizontally and transversely on the front standard and provided at its front end with a handle 93 so that this clutch can be operated manually.

The seaming rolls 3 5 and 38 arepivotally mounted on the lower ends of two carriages 94, 95 which are movable toward and from the periphery of the barrel for engaging and disengaging these rolls with the respective flanges of the body and head. In the preferred construction these carriages are guided in their movement by slidingly engaging the opposing inner lateral sides of the carriages with each other, while the backs or rear sides of the same engage with the .back plate 96 over a guideway, the outer lateral sides of these carriages engage with side walls 97 of this guideway, and gibs or .rails 98 are secured by bolts 99 with the edges of the walls 97 and engage with the inner sides of the carriages 94 and 95 adjacent to the outer corners thereof, as best shown "in Figs. 7, 8, and 12. By this means the two carriages 94 and 95 are guided with their opposing surfaces upon each other and are also guided on the guideway 96 and 97, which latter effect forms a guide yoke.

This last mentioned yoke is preferably also guided on the adjacent standard so that the guideway for each carriage may be moved toward and from the axis of the chucks to permit of adapting this guide for most effectively controlling the movement upper part. of the guide yoke, and having a -wrist 106 which turns in a bearing 107 on the upper part of the respective standard, collars 108 secured to this screw and engaging the upper and lower sides of the hearing 107, and a square 109 formed on the upper end of the screw 104 and adapted to receive a wrench or other tool for turning this screw whenever it is desired to raise and lower the guide yoke.

Mounted upon the cam shaft 7 9 are two pairs of rotary cams 110, 111, the members of each pair being arranged adjacent to the inner side of one of the standardsand the member 110 of each pair being adapted to shift the respective preliminary curling roll inwardly, its companion cam 111 being adapted to move the correspondingfinishing roll inwardly into its operative position. The cams 110, 111 which operate the rolls mounted on the stationary standard are secured to the camshaft 79, but the cams 110, 111 which operate the preliminary curling and finishing rolls associated with the movable standard 39 are mounted on the rear movable standard so that these last mentioned rolls are compelled to turn with the cam shaft 79 but are capable of sliding lengthwise thereon in unison with the rear standard, this being preferably accomplished by means of a spline in-any suitable and approved manner.

On their inner sides the cams 110, 111 of each pair engage with rollers 112, 113 which are mounted" on vertically swinging rock arms 114 115. which have their free inner ends arranged side by side while their outer ends are pivoted to the upper part of the respective standard by means of horizontal longitudinal pivots 116, 117. Each of the rock arms 114, 115 is connected with its respective roll carriage in such manner that the vertical movement of each of these rock arms causes the respective carriage to rise and fall and these connecting means are so constructed that the position of each of these roll carriages can be adjusted relatively to the companion rock arm for adapting the respective roll to barrels of different diameters. 4

In the preferred construction shown in the drawings this is accomplished by means of a shifting rod 118.having the form of a screw which works'with its threaded body,

a screw threaded opening 119 formed in a trunnion 124 which is pivotally mounted on the upper part of the respective roll carriage, while the upper end of this screw shifting rod is provided with a head 120 the upper side of which engages with the underside of the swivel head 121 and the under side of which is engaged with a coupling sleeve 122 having a shoulder which engages with the underside of the head 120, and a screw. thread whereby this coupling is connected with the swivel head 121, as best shown in Fig. 10.- Each of the swivel heads is pivotally connected at its central part by means of a horizontal longitudinal pin 123 with the companion rock arm 114 or 115.

As the salient part of the cam 110 or 111 engages the roller of its corresponding rock arm and depresses the same the corresponding carriage is moved downwardly. During this time the swivel head 121 is free to turn on the pivot pin 123 and the trunnion 124 turns at its opposite ends in bearings 125 in the upper end of the respective roll carriage. In order to prevent the screw connecting rod 118 from becoming loose and turning while the machine is in operation, the trunnion nut 124 is preferably divided into sections which are clamped against opposite sides of this screw connecting rod. As shown in Figs. 10, 20 and 21 this trunnion nut is divided along a line, one half of its length extending from one end thereof to the center of the threaded opening thereof, and also radially from the axis of this trunnion nut to the periphery thereof in line with the center of the screw threaded opening therein, thereby forming two sections one of which 126 represents three-quarters of-the trunnion nut and the other, 127, one-quarter of the same, as shown in Figs. 20, 21.

When these sections are assembled they form a complete nut the opposite ends of which are cylindrical and fornr trunnions which turn in the bearings 125. These sections are clamped against opposite sides of the screw connecting rod. 118 by means of screws 128 which connect these trunnion sections, thereby preventing the .screw connecting rod 118 from turning while it is in operation.

The rising movement of the roll carriages is effected by spring pressure and is preferably accomplished by means of a shifting rod 129 pivotally connected at its lower end with the upper end of one of the swivel heads 121 and passing with its central part through a guide pocket 130 on the adjacent upper part of the respective standard, and a lifting spring 131 hearing at its lower end against the bottom of the pocket 130 and at, its upper end against a screw nut 132 at the upper end of the shifting rod 129, as best shown in Fig. 10.

In the operation of the machine the cam 110 first depresses its companioncam arm 114 so astoengage its roll with the flanges at the corresponding end of the barrel and seaming them together, ,as shown in Fig. 7, after which this roll and associated parts are raised by the respective spring lifting mechanism, and then the cam 111 causes the finishing roll to be depressed in engagement with the flanges on the respective end of the barrel for seaming them together, as shown in Fig. 8, and thereafter this last mentioned roll is also lifted by its spring mechanism into an inoperative position so that the completed barrel is free to be removed.

Means are provided whereby the clutch '90 is automatically opened for disconnecting the seaming roll shifting mechanism from the continuously rotating driving shaft at'the end of each cycle of seaming operations, and after the seaming rolls have been withdrawn from the barrel, thereby relieving the operator from this work and insuring withdrawal of the seaming rolls from the barrel into the proper position at all times.

The preferred means for this purpose which are shown in Figs. 1, 2, 3, 4, 6, 13, 14, 15 and 16 are constructed as follows The numeral 133 represents the trip, return or throw-out arm secured to the shaft 92 by which the clutch 90 is opened and;

I to 16. On one side of this slide is mounted a latch 137 which is capable of a vertically sliding movement on the slide 134 and also a pivotal movement thereon in a direction toward'and from the throw-out arm 133, this combined sliding and pivotal connection being effected lay-means of a pin 138 mounted on the .slide 134 and passing through a vertical slot 139 on the latch 137. This latch is yieldingly held'in an elevated position on. this slide 134 by means of a spring 140 interposed between the lower end of this latch and the shoulder 141 on the lower part of this slide. This latch is also yieldingly turned in the direction for engaging its upper end with the free end of the throw-out arm 133 by means of a spring 142 interposed between the lower end of the slide 134 and the lowerarm of the latch 137. Near its upper end the latch is provided on that side facing the free end of the throw-out arm with a rabbetf forming an upwardly facing shoulder 143 which is adapted to engage with the free end of the throwout arm, and at its extreme upper end the latch is provided with a throw-off incline 144 which is adapted to engage with a normally fixed but preferably adjustable throwoff abutment 145 which preferably consists of a screw arranged in a bracket 146 on the adjacent part of the main frame.

When the clutch 90 is in its open position,

as is shown by dotted lines at the left of Fig. 14 and by full lines in Fig. 4,,the throw-out arm 133. is elevated into a horizontal posipressed position together with the parts mounted thereon by gravity and its upward motion is effected by means of a vertically swinging rock lever 147 pivoted on the upper part of the front standard of the main frame and provided at one end with a roller 148 engaging with a cam 149 on the cam shaft 79, whileits opposite arm is connected by a shifting rod 150 with the upper part of the slide 134, as shown in Figs. 1, 2, 3, 4, and 6.

vAs the operator now manually turns the rock shaft 92 by means of a hand lever 93 so as to close the clutch and couple the driving mechanism with the seaming roll shifting mechanism, the clutch arm 91 moves from the position shown by full lines in Fig. 4 .to the position shown by dotted lines in the same figure, which last mentioned position corresponds to the position of this clutch arm indicated by dotted lines at the right of Fig. 14. Asthe operator turns the clutch operating shaft 92 in the direction for closing this clutch the throwout arm is shifted from the horizontal position shown by full lines in Fig. 14 to the downwardly inclined position shown by dotted lines in the same figure.

When the machine comes to rest after the seaming rolls perform their operations on the barrel, the high or salient part of the cam 149 is in engagement wi'th'the roll 148 of the rock arm as shown in Fig. 3, and has thereby raised the slide 134 into the position shown in Figs. 2 and 14. During the initial part of the rotary movement of the camshaft 79 after the clutch 90 has been closed the salient part of the cam 149 is moved out of engagement from the roller 148 of the rocklever 147 and thereby permits this roller and the corresponding arm on this lever to be raised while the opposite arm is depressed, as shown by dotted lines in Fig. 3, and also permits the slide 134 to descend by gravity into its lowest position indicated in Fig. 15. During such descent of this slide the latch 137 is also lowered and the incline 144 at its upper end is permitted to ride along the stationary abutment 145 so that the upper end of this latch will be moved by the action of the spring 142 toward the throw-out arm 133, and the upwardly facing shoulder143 of the latch is moved underneath the throw-out arm 133, as shown in Fig. 15.

This automatic throw-off mechanism will now remain in this last mentioned position until the cam shaft 79 has nearly completed one complete rotation and during the last part of this rotation the salient part of the cam 149 engages with the roller 148 and depresses the corresponding arm of the rock lever 147 and raises the opposite arm thereof, as shown by full lines in Fig. '3, whereby the slide 134 is raised.

During the first partof this raising movement of the slide the shoulder 1430f the latch bears against the underside of the throw-out arm 133 and tends to; raise the same but the resistance of the clutch 90'causes the slide 134 to effect the first part of this movement independently of the latch and during this time the spring140 is compressed until the pin 138 on the slide releases the upper end of the slot 139 on the latch, as shown in Fig. 16. Thereafter the latch moves up wardly in unison with the slide 134 and causes the throw-out arm 133 to be moved from the downwardly inclined position shown in Fig. 15 to the horizontal upper position shown in Fig.- 16 whereby the clutch 90 is uncoupled during the last part of the upward movement of the slidev 134. At the same instant that the clutch 90 is uncoupled the latch has been shifted laterally away from the throw-out arm 133 by the wedge action of the incline 144 against the abutment 145 so that the shoulder 143 of the latch is completely disengaged from the throw-out arm 133, and when this disengagement occurs the spring 140 immediately completes the upward movement of the latch and causes the incline 143 to complete the lateral movement of the latch away from the free end of the throw-out arm 133, as shown by full lines in Fig. 14, in which last mentioned position the latch fully clears the throw-out arm 1,33 and permits the latter to be subsequently turned downwardly manually by the operator for again closing the clutch 90 independently of the automatic throw-out mechanism.

The means for supporting the barrels and lifting them into a position for engagement with the chucks and again supporting the same preparatory to removal from the machine are preferably constructed as follows Between the upper side of the base of the main frame andthe lower side of the chucks is arranged a vertically movable platform which is preferably of skeleton form and comprises two transverse bars or arms 1 51 pivoted by means of hinges 152 or the like to the rear end of the base so that these bars can swing vertically, and two centering blocks 153 arranged on the upper side of each of the arms 151 and on opposite sides of the driving shaft 44,a rock shaft 155 arranged horizontally and lengthwise within the base and journaled in suitable bearings thereon, lifting arms 158 secured to this rock shaft and projecting inwardly therefrom, a link 157 connecting the inner end of each lifting arm-158 with the lower side of one of the elevating arms 151, and a treadle 154 secured to the rock shaft 155 and projecting forwardly through an opening in the base and provided at its front end with a pedal 156, as best shown in Fig. 7. Due to this construction the rock arms 158, the treadle 154 and the rock shaft connecting the same, in effect form a foot lever which is opcratively connected by the linkage formed, by the links 157 and constitute the means whereby the barrel elevating platform may be raised and lowered.

This platform is arranged in its lowermost position and rests upon the upper side of the base when the members of the barrel to be seamed together are placed in the machine. After the barrel has been thus placed upon the elevating platform it engages withthe centering blocks 153 which form a saddle or seat whereby this barrel is prevented from rolling towardeither side of the machine, and while thus supported the operator depresses the pedal 156 thereby rocking the foot lever in the direction for raising the elevating platform and causing the barrel to be centered relatively. to the chucks so that upon subsequently moving the rear standard toward the front standard the heads at the opposite ends of the barrel will be properly gripped by the chucks and centered for subsequent operations thereon by the seaming rolls. After the seaming operation has been completed the operator raises the platform so as to engage the underside of the barrel and cause the latter to be directed from the. machine toward the rear side of the same, leaving the space clear for the reception of another barrel which is introduced into the machine from the front side thereof.

I claim as my invention 1. A machine for seaming together the heads and bodies of sheet metal barrels com prising a. frame having a base, a fixed standard, a movable standard slidable on said base towardand from the fixed standard, chucks rotatably mounted on said standards and adapted to receive a barrel between them, and means for reciprocating said movable standard including a crank rotatably mounted on said base, a shifting rod connccted at one end with said crank and at its opposite end with said movable standard, a

worm wheel connected with said crank, a

worm meshing with said worm wheel, a clutch shaft carrying said worm, a driving gear wheel turning constantly in the same direction, driven gear wheels mounted concentrically with the clutch shaft" and meshing with diametrically opposite sides of the driving gear wheel, and clutches for connecting either of said driven gear wheels with said clutch shaft.

2. A machine for seaming together the heads and bodies of sheet metal barrels comprising a frame having a base, a fixed standard, a movable standard slidable on said base toward and from the fixed standard, chucks rotatably mounted on said standards and adapted to receive a barrel between them, and means for reciprocating said movable standard including a crank rotatably mounted on said base, a shifting rod cornect-ed at one end withsaid crank, and t its opposite end with said movable standat d, a worm wheel connected with said crank, a worm meshing with said worm wheel, a clutch shaft carrying said worm, a driving gear wheel turning constantly in the same direction, driven gear wheels mounted concentrically with the clutch shaft and meshing with diametrically opposite sides of driving gear wheel, clutches for connecting either of said driven gear wheels with said clutch shaft and means for actuating said clutches comprising, a tappet disk provided on diametrically opposite sides with tappet faces, a rock shaft carrying said worm wheel,

crank and disk, and means for transmitting motion from said tappet disk /to said clutches.

3. A machine for seaming together the heads and bodies of sheet metal barrels comprising a frame havinga base, a fixed standard, a movable standard slidable on said base toward and from the fixed standard,

chucks rotatably mounted on said standards and adapted to receive a barrel between them, and means for reciprocatin said movable standard including a crank rotatably mognted on said base,a shifting rod connected atne end with said crank and at its oppo-- site end with said movable standard, a worm wheel connected with saidjcrank, a worm meshing with said worm jwheel, a clutch shaft carrying said worm, a driving gear wheel turning constantly'in the same direction, driven gear wheels mounted concentrically with the clutch shaft and meshing with diametrically opposite sides of the rdriving gear wheel, clutches for connecting either of said driven gear wheels with said clutch shaft and means for actuating said clutches comprising a tappet disk provided on diametrically opposite sides with 'tappet faces, a rock shaft carrying said worm wheel, crank and disk, a reversing shaft, a tappet arm mounted on said IBVQI'SlIlgShfift and adapted to be engaged by said tappet faces and turned alternately in opposite directions, a clutch arm arranged on said reversing shaft and engaging with said clutches, and a hand lever connected with said reversing shaft.

'41., A machine for seaming together the heads and bodies of sheet metal barrels comprising means for rotatably supporting the barrel, a seaming roll adapted to scam the barrel, and means for moving said roll to- .ward and from said barrel including a car- 'rier supporting said roll and movable laterally toward and from said barrel, a trunnion screw nut nivotally mounted on said carrier, a shifting screw engaging its threaded end with said trunnion screw nut, a vertically swinging rock arm, and a swivel having a rotatable connection with said screw and pivoted on said rock arm.

5. A machine for seaming to ether the heads and bodies of sheet metal barrels comprising means for rotatably supporting the barrel, a seaming roll adapted to seam the barrel, and means for moving said roll toward and from said barrel including a carrier supporting said roll and movable laterally toward and from said barrel, a trunnion screw nut pivotally mounted on said car.- rier, a shifting screw engaging its threaded end with said trunnion screwnut, a vertically swinging rock arm, a swivel having a rotatable connection with said screw and pivoted on said rock arm, a rotary cam engaging said arm for turning the same in one direction, and means for moving the arm and parts connected therewith in the opposite direction including a shifting rod connected with the swivel and having a screw nut, and a spring interposed between said screw nutand a support.

6. A machine for seaming together the heads and bodies of sheet metal barrels comprising means for l'otata'bly supporting the barrel, a seaming roll adapted to seam the barrel, and means for moving said roll toward and from said barrelvincluding a carrier supporting said roll and movable laterally toward and from said barrel, a trunnion screw nut pivotally mounted on said carrier,

a shifting screw engaging its threaded end with said trunnion screw nut, and a vertically swinging rock arm connected with the other end of said shifting screw, said trunnionscrew nut being divided in sections on a line extending through the threaded opening of, the nut and said sections-being connected by clamping screws whereby the sections are clamped against the shifting screw. I r

7. A machine for seaming together the heads and bodies of sheet metal barrels comprising means "for rotatably supporting the barrel a seaming roll adapted to seam the barrel, and means for moving said roll toward and from said barrel, including a cargaging a threaded opening on said yoke and mounted on said frame so as to be capable of turning but incapable of longitudinal movement.

8. A machine for seaming together the heads and bodies of sheet metal barrels comprising means for rotatably 'supportin the barrels, a pair of seaming rolls arrange side by side and adapted to engage the barrel for seaming the same, carriers supporting said rolls and having their inner opposing sides engaging each other, a yoke having a guideway engagingthe rear and outer'sides of both carriers, gibs secured to the yoke and outer front edges of said carriers, and means for actuating said'carriers for moving the rolls toward and-from said barrel.

9. A machine for seaming together the heads and bodies of sheet metal barrels com prising means for rotatably supporting the barrel to be seamed, two seaming rolls movable alternately toward and from the barrel for seaming the same, and means for actuating said rolls including carriers supporting said rolls, cams for shifting said carriers and a shaft carrying said cams.

10. A machine for seaming together the heads and bodies of sheet metal barrels comprising means for rotatably supporting. the barrel to be seamed, two seaming rolls movable alternately toward and from the barrel for seaming the same, and means for actuating said rolls including carriers supporting said rolls, guideways for said carriers, rock arms connected with said carriers, cams for shifting said rook arms, and a rotary shaft on which said cams are mounted.

11. A machine for seaming together the heads and bodies of sheet metal barrels comprising means for rotatably supporting the barrels, a driving shaft, a seaming roll for engaging the adjacent edges of a head and body, means for moving said roll toward and from its operative position including a driven shaft which makes a turn for each cycle of seaming operations, manual means for connecting said driven shaft with said driving shaft and beginning each cycle of seaming operations including a clutch, a clutch arm engaging said clutch, a rock shaft carrying said clutch arm, and a hand lever connected with said rock shaft, and automatic means for uncoupling said driven shaft from said driving shaft at the end of each cycle of seaming operations including a vertically movable slide, a rock lever having one arm connected with said slide, a cam turning with said driven shaft and engaging with the other arm of said rock lever, a throw-out arm connected with said rock shaft, a latch capable of a transverse rocking and a longitudinal movement on said slide and having a trip shoulder ada ted to engage said throw-out arm and also aving a throw-oil incline, a spring for turning the latch transversely toward said throw-out arm for engaging the latter with saidshoulder, a spring for moving said latch lengthwise on the slide toward said throw-out arm, and a normally stationary throw-off abutment adapted to be engaged by said incline for shifting the latch and disengaging its shoulder from said throw-out arm at the last part of the longitudinal movement of said slide under the action of said cam.

12. A machine for seaming together the heads and bodies of sheet metal barrels comprising means for rotatably supporting the barrels, a driving shaft, a seaming roll for engaging the adjacent edges of a barrel head and barrel body, means for moving said roll toward and from its operative position including a driven shaft which makes a turn for each cycle of seaming operations, manual means for connecting said drlven shaft wlth said driving shaft and-begining each cycle of seaming operations including a clutch, and a hand operated lever operatively connected with said clutch; and automatic means for uncoupling said driven shaft from said driving shaft and beginning each cycle of seaming operations, including a slide, a

cam turning with said driven shaft and operatively associated with said slide, a throwout member operatively associated with said slide, a latch capable ofa transverse and also a longitudinal movement relative to said slide, means for moving said latch to ward said throw-out member for interlocking the same therewith, means for moving said latch lengthwise of said slide toward said throw-out member, and a normally stationary throW-ofi abutment adapted to coopcrate with said latch and disengage the latter from said throw-out member during the last part of the longitudinal movement of said slide under the action of said cam.

In testimony whereof I hereby ailix my signature.

BROR LINDGREN.

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