US1614467A - Cap delivery and applying mechanism - Google Patents

Description

' 1,614,4 1927' M, GOLDBERGER 67 CA5 DELIVERY AND APPLYING MECHANISM Filed August 10. 1921 6 shegts shii l 1 614 467 8 2 M. GOLDBERGER I CAP DELIVERY AND APPLYING MECHANISM Filed August 10. 1 1 '6 Sheets-Shut /70C/5-60 6 ant.

I I o q i r w MiL M. GOLDBERGER CAP DELIVERY AND APPLYING MECHANISM Jam. 18, 1927.

Filed August 10, 1921 6 Sheets-sheaf 5 Z5111 73/1074" l/V/f/ 60% v Jan. 18, 1927. ,61 ,467

M. GQLDBERGER CAP DELIVERYAND APPLYING MECHANISM Filed Aug st 10, 1921 6 Sheets-Sheet 4 Jan. 18, 1927. 1,614,467

M. GOLDBERGER GAP DELIVERY AND AIPLYING MECHANiSM Filed August 10. 1921 s Shelets-Sheet s j 1,614,467 Jan. 18,1927. MGOLDBERGER CAP DELIVERY AND APPLYING MECHANISM Filed August 10. 1921 6 Sheets-Sheet G Patented Jan. 18, 1927.

umren stares MORRIS GOLDBERGER, OF CHICAGO, ILLINOIS, ASSIGNOR T0 CRESCO CREAMERY SUI- 1,614,467, Parent osrice.

FLY Gil, OF CHICAGO, ILLLIIEOIS, A CORPORATION OF ILLINOES.

CAP DELIVERY AND AFJPLYING MECIHANISM.

Application filed August 10, 1921. Serial No. 491,090.

This invention relates to improvements in cap delivery and applying mechanism, adapted especially for delivering and appl ing thin caps and like closures to close receptacles, such as milk bottles and like containers. The mechanism is herein shown as designed for use in connection with the filling machine shown in my prior United States Letters Patent Number 1356590, granted May 29, 1.923, but may beused with other types of filling machines or other machines to de liver the receptacles, and certain essential features can also be employed as a nonautomatic capping mechanism or one which is partially or wholly operated by hand.

In the mechanism shown, embracing one embodiment of the invention, a magazine for a stack of caps and a capping'plunger guide cylinder are connected in fixed relation to each other and to a table or casting at their lower ends, in which is formed a cap delivery slot through which caps are transferred from a stack in the magazine in line with the plunger, to be by the plunger forced on the container mouth. The said caps are segregated from the stack and are transferred through said slot one at a time by an ejector or slide which is operatively connected to said plunger in a manner to alternate in operative cap delivery and setting movements, respectively, and said operative connections are such, with respect to a stop for the ejector that the caps are delivered in axial register with the plunger notwithstanding slightirregularities in said operative connections. he parts referred to, and which may aptly be termed, as a whole, a capping head, can be operated as a hand machine by applying the head by hand to the mouth of a container, with the parts operating in a semi-automatic way. When the capping mechanism is entirely automatic in its operation, the unitary structure, termed the head, is supported to be automatically actuated by a drivina connection to the re ceptacle carrier, whether said carrier be part of a bottle filling machine or not, and there is a resilient or compensating element in said connection to power LO compensate for containers differing somewl at in height without danger of breaking} the container month by internal expansion due to the cap setting plunger. .ihe mechanism is otherw se adjusted to adapt it to containers for different so called standard capacities of material,

such as pints, quarts, et cete'ra and which are expected to vary slightly in height to pro-' vide for variations in different containers adapted for the same quantity of material.

mitted to the plunger and ejector, and, therefore, no cap is delivered.

The foregoing brief description of the general structure and operation of the mechanism has been inserted to facilitate an understanding of the description of the and is not to be taken details which follow, as restrictive or limiting. V V

Among the objects of the invention is to provide an improved operating mechanism interconnecting between the capping plunger and the ejector by which to operate the latter through movement of the former, the

parts being so arranged that the mechanism for so 0 aeratin the alun er and e ector 7111' r b 2D be rendered inoperative in the absence of a container beneath the capping head.

A further object of the invention is to produce a resilient tipped capping plunger for pressing the caps onto their seats in the receptacle, so as to avoid chipping of glass when the receptacle is made of vitreous material, particularly should a receptacle be delivered under the capping head when no cap is in position thereon, due either to the magazine being out of caps or due to a miss for other reasons.

Another object of the invention is to provide in a mechanism of this character means to adjust the same for containers of different capacities and heights and to containers of in height.

A further object of the invention is to provide an exceedingly simple, compact and eflicient capping mechanism for the purpose set forth which positively feeds the caps to the capping position and serves to accurately center the caps relatively to cap the same capacity which differ somewhat ping position, regardless of irregularities or wear in the operating means for the ejector and without imposing crushing stress on the caps.

Other objects of the invention are to further improve and simplify capping mechanisms for the general purpose set forth, and the invention consists in the combination and arrangements of the parts shown in the drawings and described in the specification,.and is pointed out in the appended claims.

As shown in the drawings:

Figure 1 is a vertical elevation of a filling machine showing the manner of applying my improved capping mechanism thereto, parts of the capping mechanism driving means being shown in section.

Figure 2 is a vertical section of the capping mechanism on the line 22 of Figure 4, with the capping mechanism in its inoperative or elevated position.

Figure 3 is a similar view, with the capping mechanism in its lower or operative position.

Figures 4 and 5 are horizontal views taken on the respective lines 4: 4: and 5-5 of Figure 2.

Figure 6 is a perspective view of the slide for giving movement to the cap ejector.

Figure 7 is a vertical section on the indirect line 7-7 of Figure 2.

"Figure 8 is a plan view of a cross head structure constituting a connection between the capping head and its automatic driving connections.

Figure 9 illustrates a modification of the invention, showing it as embodied in a hand machine.

The filling machine shown in Figure 1, and to which one embodiment of the present invention may be applied, embraces, in general terms, a base 10, a ro'tative filling tank 11, and a series of revoluble twin receptacle holders 12 which are adapted to travel in orbital paths and to be controlled by switching mechanism similar to that shown in my aforesaid prior patent, whereby they are brought to rest at filling stations beneath the filling nozzles 13 and beneath the capping mechanism designated as a whole by The capping mechanism or head comprises, in general terms, a guide cylinder 15, a plunger 16 reciprocable therein, a cap magazine 17 parallel to said cylinder and sustained in an upright hollow support 17, which can be formed as a casting and a part integral with said cylinder, and means to deliver the lower caps C of a stack in the magazine in line with the plunger, tobe by the plunger seated in the mouth of the container B. At the bottom of said cylinder and magazine base is a horizontal table designated as a whole by 18 in which is formed a horizontal cap delivery slot 19. which extends across the bottom of: the magazine and across the lower end of the guide cylinder and in the path of the capping plunger and beneath which caps C are delivered by a reciprocating slide on ejector 19. as will hereinafter more fully appear. Said table is shown as made up of upper and lower plates 20, 21, respectively, locked together by cap bolts 22, and the cap delivery slot is formed between said plates by spacing shims 23. This construction is preferred for manufacturing reasons and also because the cap delivery slot may by the use of said shims be varied for caps of diiferent thicknesses.

The capping head thus far described is supported on the upper ends of parallel driving bars 24 that are vertically reciprocated by connection at their lower ends through a crank pin and yoke mechanism operatively connected to a worm gear enclosed in a casing at the side of the machine base, shown in Figure 1 and fully described in my aforesaid patent. On the upper ends of said drive bars 24 abreast the capping mechanism, are guide sleeves 25 which are connected by a web 26 which centrally and rigidly includes a vertical cylinder 27. 28 designates a horizontal cross bar below the cylinder 27. It is apertured at its ends for the passage of the driving bars 2-4.: and is locked to said bars by wheel screws 29, whereby said cross bar moves fixedly with said driving bars. The wheel screws, when released, however, permit the capping head to be vertically adjusted to containers it of substantially standard heights, as will. be. hereinafter described. Small. variations in standard capacity receptacles are taken care of by a compensating mechanism to be hereinafter described. it may be stated here, however, that adjusting of the mechanism to said containers of different standard capacities may be fixed by register marlrs 24- on the driving bars to register with the tops of the guide sleeves 25, as best shown in Figure 7, and that intermediate height variations of containers can be accommodated by the compensating means provided. The said compensating means can be made as follows:

30 designates a stem which extends axially through the cylinder 27 and through its lower head and is threaded at its lower end to said cross bar 28. Surrounding the stem within the cylinder 27 and interposed between said lower head and a head 31 at the upper end of the stem is a spIral expansion spring 32. i. 3 designates a bracket arm, which is integral with or fixed to the casting en'ibracing the web 26 and the guide sleeves 25 and the cylinder 27 and is curved about the magazine 17 and extends towards the axis of the plunger 16 and apertured at its extreme end to fit over the reduced upper nates an apertured cap plate through which extends a stud bolt 36 that is threaded axially into said plunger extension to bear on the cap plate 35 and to thereby coact with the shouldered plunger to lock said plunger to the bracket. The operation of the compensating mechanism described. to adapt the machine to containers of varying height will be more fully hereinafter explained.

37 designates a guide rod that is fixed at its upper end to the cap plate 35 and extends downwardly alongside the plunger guide cylinder and engages an apertured guide lug 38 integral with said. cylinder. A plunger restoring spring 39 surrounds said guide rod and is interposed between said guide 38 and plate to restore the plunger when the head begins to rise after a capping opera tion.

The cap delivery slide or ejector 19 is formed on its inner or active end with a concave edge 19 shaped to fit the caps so as to. hold the caps centrally with respect to the ejector when traveling from the magazine to the capping station and thereby insures that the caps will be delivered centrally beneath the plunger (Figure 5). The caps C when so delivered to the capping station will be held there by frictional contact of its edge with the lower member 21 in line with a discharge opening 21 of said plate above and coaxial with a concave centering lip 21 which depends from said lower plate of the table in axial alignment with the plunger;s aid centering lip 21 solidly coacting with a member which carries said slide to positively center the cap, as will hereinafter appear.

Referring now to the mounting of the slide or ejector l9 and to the manner of operating it in timed relation to the plunger, said parts are made as follows:

The said ejector is shown as fixed to a horizontal reciprocating guide carriage 45 (Figure 6) which is located immediately beneath the lower plate 21 of the table 18, and is provided at its side margins with guide flanges 46 that bear against the side edges of the lower plate 21 of said table to hold 'the said guide and the ejector fixed thereto laterally in place in operative moremeut. The ejector is applied to the upper faces of said flanges i6 and is attached thereto by means of screws 47. Said top faces of the guide flanges are in a horizontal plane which brings the ejector in the plane of the cap delivery slot 19. The front end of the ejector guide is formed with a semi-cylindric recess 48 which is adapted, in the forwardmost cap feeding movement of said carriage and ejector plate, to partially re ceive and strike the circular lip that conends of the cam levers are hinged.

stitutes the centering month 21 The guide embraces substantially one-half the external circumference of the month 21 This con tact limits not onlythe forward throw of the ejector, but also by its embracing function holds the guide laterally in centering alignment, and constitutes a registering factor to accurately center the caps at the capping station, wholly through metal contact of rugged machine parts, and regardless to the continued movement of the plunger or wear in the parts that are operatively connected to said plunger and reciprocates the ejector. This is an important feature of the construction inasmuch as itinsures that the caps shall be delivered entirely to and centrally with respect to the capping station, and in position to be pressed directly onto the container month without distorting the caps. i

- 48, 48 designate links vhich are pivotally connected at their rear ends by pivot pins 49 to the ejector guide and are likewise con nected at their forward ends by pivots 50, at each side of the delivery mechanism, to depending arms 51, 51 which are fixed to or made integral with the lower ends of i vertically swinglng cam bars or links designated as a whole by 52. Saidcam bars are hinged at their upper ends to the opposite sides of the guide cylinder 15 by means of horizontal studs or pins 53, the plane of whose axes lie in the vertical axis of the plunger 16. Said studs are threaded into thickened portions of the capping cylinder and have cylindric ends on which the upper The levers are confined on said hinge pins by cotter pins 54 or like suitable fastening means. The cam bars are formed with curved cam slots 55 which terminate at the lower ends of the bars in straight slotted portions 56,

57 designates a horizontal shaft that extends transversely through and fits tightly in a transverse opening in the capping plunger 16 and terminates outwardly beyond for extension through opposite, vertical slots 58 in the guide cylinder wall. The shaft 57 is provided at its extended ends with bearing rollers 59 adapted to travel in the curved and straight cam bar slots. Said rollers are confined from endwise movement on said shaft 57 between two other rollers 60 surrounding said shaft and being seated in fiat bottom recesses in the plunger 16, the rollers 59 being held on said shaft 57 between the rollers 60 and washers 62 surrounding the outer ends of said shaft and held thereon by cotter pins. By reason of the fact that the said 'shaft'57 the transverse opening in the plunger and extends without friction through the said vertical slots 58 of substantial length in opposing sides of said cylinder, the said plungfits closely in' er 16 is capable of vertical motion relatively to its guide cylinder.

-The operation of the automatic capping mechanism just described is as follows:

Figure 2 shows the mechanism in its uppermost or inoperative position, or that which it occupies when the driving crank pin, as shown in Figure 1, is at the upper limit of its throw. In these positions of the parts, the table 18 and the plunger guide cylinder and cap magazine 17, constituting the capping head, are raised above the capping position of the container R. The plunger 16 is also elevated relatively to the cylinder 15. The shaft 57 is also elevated so as to bring its bearing rollers 59 into the upper curved slots 55 of the cam bars, thereby through the lower ends of the cam bars and the arms 51 and the links 48, holding the cap feeding slide or ejector and its sliding carriage in its cap delivery position. A container is shown as in position below the plunger to receive a cap when the mechanism descends. The capping head descends after a cap has been delivered and centered at the capping station by drawing down the driving bars 24 through the action of the aforesaid yoke, and all parts of the head and also the compensating spring 32 uncompressed descend without other or operative movement until the centering mouth 21 strikes and exteriorly engages and confines the container mouth 7". When said centering mouth strikes the containers and centers and confines it, the plunger guide cylinder, magazine and the table, together with the ejector mechanism ceases vertical movement. The driving bars 24 and bracket 38 continue to descend so as to force the plunger downwardly through the opening 21 and seats the cap onto the container mouth. During this time the restoring spring 39 is being compressed but the spring 32 is sufficiently strong to carry the plunger downwardly to its capping position without yielding to compression when operating on containers of standard heights.

If it be assumed that all given capacity containers were of the same height, the complete capping operation could be efliected withoutthe compensating spring 32. That is to say, there could be a solid connection between the driving bars and the plunger. It is known, however, that standard capacity containers, such as quarts, pints, and so called creams differ in height, and it becomes necessary to provide means which are brought into operation when the bracket 33 strikes the top of the capping plunger guide cylinder to yield to compensate for such ditfereut heights. The variations in height are not great, but it a solid thrust were delivered directly through the plunger there would be a tendency to crush the container mouth outwardly if the capping end of the plunger were rigid. However, with the construction described, with the part 21 encircling the container mouth, and with the bracket 33 engaging the upper end of the cylinder, further downward movement of the driving bars, now connected solidly to the guide cylinder, will be compensated by the spring 32 until the driving bars reach the lowermost limit of their travel. This compensated pressure delivered on the plunger guide cylinders is transmitted enteriorly to the container by the centering mouth 21 with little or no likelihood of crushing the container mouth. In adjusting the mechanism for standard capacity containers the adjustment for each size, guided by the registering marks 24 on the driving bars 24 will be for the highest known container of a given capacity.

During the downward travel of the plunger relatively to the guide cylinder, the rollers 59 on the shaft 57 move downwardly in a straight path and, by reason-of the curvature ofthe slots 55 of the cam bars 52, and by reason of the fact that the cam bars are hinged at their upper ends to the then fixed guide cylinder 15, the said cam bars are swung rearwardly or towards the cap magazine, and thus, through the arms 5i and links 48, force the ejector guide and the ejector 19 backwardly to the position shown in Figure 8, during the time that said rollers are traveling through the curved slots 55 of said cam bars. lVhen the said bearing rollers of the shaft 57 enter the straight port-ions 56 of said cam bars in the down stroke of the capping plunger, the ejector has reached the limit of its retracting movement, as shown in Figure 3, and during the remainder of the throw of the plunger 16 the cam bars will remain stationary, while the advance end of the plunger strkes a cap 0, that is at its capping station over the container R. The plunger, as it descends and strikes the cap, drives the cap downardly through the discharge opening 2i into the month of the receptacle to seat it on the shoulder r Preferably, and as herein shown, the lower tip end 65 of the capping plunger is made of a yieldable material, such, for instance, as rubber, so that it may more gently force the cap from the position shown in Figure 2 to the receptacle, when the parts are in position shown in Figure 3, but principally for the purpose of avoiding chipping of the mouth of the receptacle as the cap is seated therein, such would occur it the receptacle were made out of a vitreous material and the end of the plunger be rigid or nonyield ng.

After the cap has been pressed home on its seat in the container and the driving and cross bars 24- and 28 begin to rise from the position shown in Figure 8, the spring 59 serves to restore the plunger to its upward position relatively to the guide cylinder until the parts in their continued movement reaches the position shown in Figure 2. During the first part of the rising stroke of the plunger, the rollers 59 of the cross shaft 57 move vertically through the straight portion 56 of the slots of the cam bars, and, during their travel through saidstraight portions, they impart no movement to the cap feeding ejector. Said rollers 59 in their continued rise pass into and through the curved slots of the cam bars and swing them forwardly to the position shown in Figure 2, and thereby operate, through the links 48 and ejector guide, to force said cap feeding ejector against the lowermost cap C and to carry said cap through the cap delivery slot 19 to the capping station at the bottom of the plunger guide cylinder 15. The cap delivery reciprocation of the ejector is arrested by solid metal contact of the curved stop and cap centering shoulder 48 on the ejector guide and support with the depending circular lip of the receptacle positively centralizing mouth 21 thereby centering a delivered cap coaxial with the capping plunger and in position for proper contact therewith by the plunger in'the next descending stroke of the latter and without imposing centering stress on the cap in a way tending to crush'it. When the ejector guide and support is thus arrested in the position shown in Figure 2, the movement of the slotted cam bars is also arrested in the posi tion' therein shown. Thus further upward movement of the plunger serves, through the rollers 59 of the shaft 57, the cross slots 55 and 58 of thecam bars and cylinder wall, respectively, and the pivoted connections of the cam bars with the cylinder, to raise said cylinder and thereby the table 20 and cap magazine to their highest position. The parts will come to, rest when the driving bars24: are at the uppermost limit of their stroke with the cross bar 28 pressing upwardly against the bottom of the compensating cylinder 27.

At the beginning of the next down stroke of the driving bars 24:, the entire mechanism thus supported thereby descends with said bars until the centralizing mouth of the table 20 comes into contact with the mouth of r another container R, whereupon the plunger 16 begins its next downward stroke relatively to the guide cylinder to, force the last placed cap G from the capping station onto the mouth of the container, and to also retract the ejector, in the manner before described, below the lowermost cap of the stack in the magazine and in rear thereof, to be ready to advance said lowermost cap to the capping station in the next upward stroke of the plunger. These operations are continued so long as the magazine is filled with caps and receptacles are delivered thereto. In the event that there should be a miss in presenting a receptacle beneath the centralizing mouth of the capping mechanism, it will be obvious that the down stroke of the driving bars 24.- will merely carry the entire mechanism down as a unitary strum 'ture, and without imparting relative movement of the plunger to the guide cylinder, and without actuating the ejector. Under such conditions it will be obvious that no cap will be delivered. Preferably a central opening intersectng the cap delivery slot 19 will be formed in the lower plate 21 of the table 18, so as to thereby permit access to a deformed cap or a cap out of proper alignment. Also the upstanding support 17 for the cap magazine may be slotted as shown at 71, to enable the caps to be separated in the event of tendency of them to adhere to each other and also to enable the finger to be held under the stack to hold the stack from sliding down in the magazine when the latter, which is detachable from its support 17 is being placed, after being charged or'filled, into said support. in Figure 9 is shown a modification ofthe invention to adapt it to a hand machine. The principal operative parts of the mechanism for feeding the caps to the capping station and for guiding the plunger is the same as in the construction before described, and like parts bear the same reference letters. As shown in Figure '9, the plunger 16 is operated by a suitably shaped hand piece 70, having a formation to adapt it tothe hand of the user. Said hand piece is provided with a flanged foot 71 which has a downwardly opening socket to receive the reduced upper end 72 of the plunger, and said parts may be fixed together by a cross pin 73. i

in operation, the device is placed with the centering lip 21 over the mouth 'of the container and the device is held by one hand in proper alignment to the container while the plunger is depressed by grasping the hand piece 70. The modified capper becomes, therefore, semi-automatic in its operation, it'being manually applied to the mouth of the container, and the feeding of the caps from the magazine and the pressing'of the caps over the'mouth of the container being automatic. In saidconstruction the foot 71 assumes the function of both the bracket 33 and plate 35 and the guide rod 87 is fixed to said flanged foot 71 in the manner and for the same purposes as applied in the previously described construction. i

I claim: I

1. A capping mechanism comprising a' guide cylinder having an open end=,cap do livery means to intermittently deliver aps to said cylinder end, a plunger reciprocable inthe cylinder to force the caps so delivered upon the aligned mouth of a container, a

=, guide stud on said plunger gnidingly engaging said cylinder, and cam and link connections between said plunger and said cap delivery means to operate the latter through movement of the plunger, including a slotted cam arm pivoted to said cylinder on an axis that intersects the vertical axis of said plunger and engaged by said stud, said stud being in the vertical plane of said slotted, lever pivot.

2. A capping mechanism comprising a guide cylinder having an open, cap setting end and around said. end with a cylindric stop surface concentric to the axis of said open end, means to intermittently deliver caps across said open cylinder end, a cap setting plunger reciprocable in said cylinder, said delivery means including a concavely curved stop and centering :tace to closely embrace said circular stop surface to stop and to center said delivery means, and therefore, a cap relatively to the axis of said centering plunger, and operative connections between said plunger and said cap delivery means to actuate the latter.

8. A capping mechanism comprising a guide cylinder for a cap setting plunger having an open capsetting end and formed concentrically to the axis of said cylinder with a nrved stop surface at said end,

*7 means to intermittently deliver caps across said open cylinder end comprising a thin ejector member engageable with the caps and a sliding carriage to carry said ejector, said carriage having a curved concave stop and centering face to en age and closely embrace said curved stop surface through a large angular extent, a plunger reciprocablecin the cylinder to set the caps so delivered across said open end upon the aligned mouth of a container therebelow, and operative connections between the plunger and the, cap feed means to actuate the latterto, deliver caps to said capping p0sition during the upward throw oi said plunger.

i, A, capping mechanism comprising a table having a cap discharge opening and a cap delivery slot-intersecting said opening', a guide? cylinder'coaxial with said discharge opening provided with a slot parallel to the axis of said cylinder, a plunger reciprocablein said cylinder and through said cap discharge opening, means to deliver caps through said slot across said opening, a cam member pivoted on an axis which intersects the axis of said plunger to said cylinder and operatively connected to said cap delivery means, and a member carried by the plunger vertically below said cam memberpivot and extending through the said cylinder slot for operative engagement with said cam member.

5. A capping mechanism comprising a table having a cap discharge opening and a cap delivery slot intersecting said opening, a guide cylinder coaxial with said discharge opening provided with a longitudinal slot, a plunger reciprocable in said cylinder and through said cap discharge opening, means to deliver caps through said delivery slot across said opening, a member pivoted to said cylinder and provided with a curved cam face and adapted to cross said slot of the guide cylinder, a stud substantially in the vertical plane of the axis of said cam member pivot and fixed to said plunger and extending through said cylinder slot and engaging the cam face of the member, and a connection between the free end of saidcam member and said cap delivery means to actuate the latter through reciprocating movement of said plunger.

6. A capping mechanism comprising a table having a cap discharge opening and axially below said opening with a centering mouth for a container and having an ex ternally cylindric stop and centering surface, said table being provided with cap delivery slot which intersects said discharge opening, a guide cylinder coaxial with said discharge opening, a plunger reciprocable in said cylinder and through said cap discharge opening, an ejector travelable through said slot to deliver caps across said discharge opening, an ejector support slidable on said table, and means to operate said ejector support alternately with said plunger, said ejector support being provided with a concave shoulder to embrace and to engage said stop and centering surface to limit cap feed travel, and to maintain lateral registration of, said support, and to thereby centralize said. caps relatively to said mouth.

7. In a capping mechanism, a capping plunger, a cylinder in which the plunger is adapted to reciprocate and to at times move with the plunger as a unit, means to deliver caps in the path of said plunger, a driving means having movement in a path parallel to the reciprocation. of said plunger, a bracket connecting: said driving means to said plunger and spaced from said cylinder, whereby initial movement of the driving means and bracket imparts reciprocation to said plunger in said cylinder until the said bracket strikes said cylinder, and a compensating spring in said driving means to permit continued movement of the driving means when the cylinder is stationary 8. A capping mechanism comprising a guide cylinder having an open ejector end and formed at its side with a slot parallel to the axis of the cylinder, means to intermittently deliver caps across said ejector- TNT rad

end, a plunger reciprocable in the cylinder to force the caps so delivered upon an aligned mouth of a container, and connections between said plunger and cap delivery means embracing a lever pivoted on a stud fixed to said cylinder to swing on an axis which intersects the axis of the cylinder, said lever being provided with a cam surface which in the upper position of the plunger lies across the cylinder plunger, and a stud extending through said slot to engage the cam face of said lever when the plunger is in its upper position.

9. A capping mechanism comprising a guide cylinder having an open ejector end, and means to deliver caps across said ejector end comprising a slidable ejector plate to embrace and center the caps in capping position when delivering the caps, and an ejector plate support provided with a partcylindrie stop to engage a fixed, like shaped, stop member on the mechanism to center the cap in its capping position.-

10. In a capping mechanism, the combi nation With a'vertically reciprocatory cap setting plunger, and cap delivery means to deliver caps into the path of said plunger, to be thereby seated in the mouth of an underneath container, said cap delivery means including a horizontally reciprocable slide 'upon which the caps are fed, and means to give movement to said slide to carry caps in line with said plunger comprising a swinging arm having a curved cam face and a straight face and operatively connected to said slide, a pivot for said arm Whose axis intersects and lies in the plane of the vertical axis of said plunger, and a verticallv movable member engageable with the cam and straight faces of said arm and lying with its axis parallel to that of said arm pivot.

11. In a capping mechanism, the combination with a vertically reciprocatory cap setting plunger, and cap delivery means to deliver caps into the path of said plunger, to be thereby seated in the mouth of an un: derneath container, said cap delivery means including a horizontally reciprocable slide upon which the caps are fed, and means to give movement to said slide to carry caps in line with said plunger comprising a swinging arm having a curved cam face and a straight face and operatively connected to said slide, a pivot for said arm whose axis intersects and lies in the plane of the vertical axis of said plunger, and means movable in a path lying in the vertical axis of said plunger to engage the faces of and to operate saidcam arm.

In Witness whereof I claim the foregoing as my invention, I hereunto append my sig nature this 8 day of August, 1921;

MORRIS GOLDBERGER.

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