US1596538A

US1596538A - Machine for forming closure caps

Info

Publication number: US1596538A
Application number: US629068A
Authority: US
Inventors: Ingram Harry
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-03-31
Filing date: 1923-03-31
Publication date: 1926-08-17
Anticipated expiration: 1943-08-17

Description

Aug. 17 1926. 1,596,538

H. INGRAM MACHINE FOR FORMING CLOSURE CAPS Filed March 31, 1923 3 Sheets-Sheet 1 I I I I I I Aug. 17 1926.

H. INGRAM MACHINE FOR FORMINGCLOSURE cars Filed March 31, 1923 3 "Sheets-Sheet 2 YIIIIIIIIIII/ 1 illllllllllIlill HIIIHIIIIIIIIHHI\HHlIIIHHHHHIHlllHIHHHIIIllHI1| Aug. 17 ,1926.

H. INGRAM MACHINE FOR FORMING CLOSURE cars 3 Shoots-Sheet 5 Filed Marph 31 1923 I I ILL Patented Aug. 11, 1926.

UNITED STATES HARRY INGRAM, OF BBBOKLYN, NEW YORK.

' HACTIINE FOR FORMING CIZOSUBE CAPS.

Application filed larch 31,

The invention relates to means for form-.

ing in the sides of closure-caps inner annular recesses adapted to receive band-gaskets utilized for sealing against the flat sides of the tumblers, jars or the liketo which the caps may be applied:

The caps are firststamped up from sheet metal, preferably thin flexible sheet aluminum, before they are submitted to the machine of my present invention, and in this stage said caps comprise a disk-top and a lain smooth annular skirt portion depending from the peripheral edge of said top. The closure caps thus partly formed are submitted to the machineof my invention, and therein and thereby'the skirt portions of the caps are transformed, by a spinnin and rolling operation, from their flat con ition into a shape specially adapted to receive side seal gaskets and cooperate with the gaskets in creating an effectual side-seal against a tumbler or the like. The skirt portions of the partly constructed caps are, in accordance with my invention, formed inwardly on annular downwardly and inwardly inclined or converging lines through a horizontal intermediate section of the skirt, thus providing a shoulder extending toward the side of the receptacle for supporting a gasket and creating above this shoulder an annular recess offset from the side of the receptacle to receive the gasket supported on the shoulder and into which recess the gasket is deformed and strongly pressed by the application of the cap to the receptacle. The said annular recess is defined at its lover ed 'e by the aforesaid shoulder, at its upper edge by the peripheralportion of the lower surface of the top of the cap and at its outer side by the upper portion of the skirt of the cap, said upper portion of the skirt and said peripheral ortion of the top of the cap being left in t eir original shape and condition as given to them in the dies. In the formation of the aforesaid gasket supporting and recess-creating shoulder, I also form a narrow vertical flange out of the lower portion of the skirt of the partly constructed cap, this flange extending downwardly from the inner edge of said shoulder. The machine of my invention while transforming the plain fiat skirt of the partly formed cap intothe gasket-receiving shape described, leaves all parts of the cap smooth and free of perceptible wrinkles or the like.

1923. Serial naczaocs.

' The machine of my invention comprises a bed or plate against which the flat top of the cap is held, a forming-flange or rim at the edge of said plate having a groove and suitable surfaces against which the plain flat skirt of the cap is stron 1y pressed and ro- -tated to impart to it t e gasket-receiving shape hereinbefore described, a forming r01 which receives and is less in diameter than the cap and is shouldered and surfaced to co,- operate with said forming-flange or rim in shaping the said skirt, a spring acting to yieldingly cushion. the pressure exerted against'the plain skirt of the cap between 7 said roll and said forming-flange or rim, and means for effecting a relative traveling movement between said forming-flange or rim and said roll, whereby the roll and cap are rotated against said flange. The machine preferably employs several of the.

forming-rolls in cooperation with one forming-flange or rim, so as to increase the capacity of the machine.

The invention will be fully understood from the detailed description 'hereinafter presented, reference being had to the accompanying drawings, in which:

Flg. 1 1s a top view, partly broken away and taken in the direction of the arrow a of Fig. 4, of a machine constructed in 210- v 'cordance w1th and embodying the inven- .t1on;

Fig. 2 is a vertical section through a portion of the same, taken on the dotted line 2 -2 of Fig. 1;

Fig. 3 is a vertical section through a portion of the machine, taken on the dotted line 3-3 of Fig. 1;

Fig. 4 is a. vertical section through the machine; i

Fig. 5 is a side elevation, partly in section and partly broken away, of a modified wardly beyond in the flange 11, said shoulder 26 having a tion of 'a machine frame and having throughout a large portion of its periphery an upstanding flange 11 formed with an undercut groove 12 having a plain flat side surface 13, and an upwardly and outwardly 1nclined surface 14, said surface 14 commenc ing at the upper edge of the surface 13 and terminating at the lower edge of a flat sur face 15 which extends to the upper surface.

of the rim orflange 11, as shown in Fig. 4. The bottom-of the groove 12 is flat and is formed by the outer edge portions of the flat uppersurface of the plate or table 10. The inner surface of the flange 11 constitutes a grooved runway against which the plain side of a ca is rotated by means of rolls 16 and whic in cooperation with the rolls transforms the plain partly constructed closure-cap shown in Fig. 2 to the recessed cap shown in Fig. 3, the recess being an nu ar and smooth and adapted to receive a suitable gasket which, with the'cap, constitutes a side-seal closure for tumblers, jars and the like. The table 10 has a flat top against which the flat tops of the caps ride, and said table is formed with a downwardly extending sleeve 17 (Fig. 4) within which is mounted a shaft 18 upon whose lower end is a beveled gear-wheel 19 and upon whose upper end is keyed a frame 20 having, in the present instance, three arms 21 which are hollow in their outer end portions and receive slidable bars22 carrying the rolls 16- at their outer ends and at their inner ends being pressed against by coiled springs 23 confined within the arms 21, as shown in Flg. 4. The arms 21 are slotted, as at 24. an pins 25 extend through these slots and throughthe bars 22, whereby the movement of the bars 22 is limited and said bars-are confined to the arms 21.- The arms 21 are :all alike and likewise the bars 22 are all a e and each bar 22 at its outer end has an aperture to receive the axle of one of the rolls 16. The rolls 16 are arranged to ro-' tate on ball bearings, as shown 1n Fig. 3, and each roll has a flat lower surface, an annularly projecting shoulder 26 which conforms exactly to the shape of the groove 12 fiat surface 27 to match the surface 13 of said groove and an inclined surface. 28 to match the inclined surface 14 of said groove. The rolls 16 also have, outwardly beyond the inclined surface 28, a plain perip eral surface 29 matching and extending outthe flat surface 15 of the flange or rim 11, as represented on an enlarged scale in Fig. 3.

The shaft 18 carrying the, arms 21 may receive its motion from any suitable source and at present I illustrate a driving shaft 30 mounted over the base-plate. 31 and carrying a gear-wheel 32 in mesh with the gearwheel 19 on the shaft 18.

in its initial partly formed condition as fed to the machine of my invention and by which machine said capy-by'a spinning or rolling operation, has its skirt portion given the outline represented in' Fig. 3, this outline conforming to the outline of the groove 12 in the flange or rim 11 and that of the

portions

27, 28 and 29 of the rolls 16, whereby an annular recess 34 is provided in said cap at the upper peripheral edges thereof, said recess being formed by the top of the cap and the

sections

35, 36 of the skirt portion of the cap, a flange 37 being formed at the lower peripheral edges of said recess 34 and extending downwardly from the lower peripheral edge of the inclined section 36 of t e skirt portion of the cap. The caps are, while inverted, fed to the machine in the condition in which they are shown in Fig. 2, having plain straight annular skirts, and leave the machine in the form in which they are shown in F ig. 3 having the recess 34 and

skirt sections

35,36, 37. The purpose of forming the recesses 34 in the skirt shelf 38 at one edge of the plate or table .10, as shown in Figs. 1 and 2, wherein the caps are numbered 33. The table 10 has an inclined pocket 39 into which the caps pass from the feed table 38, and as the rolls. 16 reach the caps 33 in the pocket 39, the forward edge of the roll engages the then higher portion of the cap 33 (Fig. 2) and draws the cap upwardly upon the main flat flooring of the table 10 and carries the cap against the forming edge flange or rim 11, whose starting end 40 (Fig. 1) is adjacent to the pocket 39. The caps, one after another, are engaged by the rolls 16 as they reach and start to leave the location of the pocket 39 and said rolls carry said caps along the forming=flange or rim 11, starting from the point 40, to the diminishing point 41 thereof and after reaching the latter point allow the caps to drop into a chute 42, whence they descend to a suitable place of deposit. The chute 42 has an open upper end, as'shown in Figs. 1 and 4. During the travel of the rolls 16 along the recesed jflange or rim 11, the springs 23 act with sufthe cap being pinched between said rolls and said flange. along the forming-flange or rim 11 by power, and hence are compelledto make a continuous circuit of the table or plate 10 and during their travel. while pressed outwardly, said rolls effect the rotation of the caps against the forming rim or flange 11, with the result that the skirt portions of the caps are transformed from the straight outline shown in Fig. 2 to the outline shown in Fig. 3. The springs 23 exert outward pressure against the rolls 16 and caps 33 while said rolls and caps are traveling against the inner surfaces of the rim or flange 11, said springs then being compressed by the'engaggement of the caps and rolls with said rim an e. Theri is a constant rotation of the arms 21 carrying the rolls 16, and hence the caps to be transformed in shape are fed one after another to the pocket 39 and are taken up,

one after another, from the pocket 39 by the successive rolls as therolls reach said pocket and moved along the flange or rim 11. The action of the rolls 16 against the caps is both a rolling and spinning operation and the caps finally leave the machine propery recessed, as shown in Fig. 3, and with all their surfaces entirelysmooth. In Fig. 1 I illustrate the machine as employing three rolls 16 and three arms 21, but obviousl the invention. is not limited to any specia number of the arms 21 and one arm or half a dozen arms may be made use of, as may be desired, the onl essential consideration being that each r0 1 16 shall have a suflicient length of travel along the forming-flange or rim 11 to properly transform the skirt of the cap carried by the roll from the shape shown in Fig. 2 to that illustrated in Fig. 3 and leave the cap with smooth surfaces. I

In Figs. 5 and 6, I illustrate a modification of the invention in which a straight in.- stead of a circular forming-flange or rim 43 is made use of in connection with the roll 44 which conforms to the roll 16 hereinbefore described. The forming-flange or rim 43 has the same grooved formation as the rim orflange 11 and extends horizontally from a flat vertical plate or bed 45, and

' hence the rim or flange 43 does not require specific description. The rim or flange 43 44 being so positioned that when the capis thereon, as shown in Fig. 6, and the roll is moved upon the flange 43, it crowds said flange downwardly against the resistancev of the spring-cushion 48. In the construction shown in Figs. 5- and 6, the spring-cushion The rolls 16 are driven 48 does the. same work as the springs 23 in the construction shown in Figs. 1 and 4. The construction shown in Figs. 5 and 6 will be understood from what hasbeen said with respect to Figs. 1 to 4 inclusive without further detailedd explanation.

In Figs. 7 and 8 I illustrate a further modification of the invention and therein 50 y I denotes a rotary disk having a formingflange or rim 51 of the identical formation of the rim or flange 11 hereinbefore referred to. The disk 50 is mounted on a shaft 51 which may be driven by a band wheel 52 oris mounted on the end of a rod 54 carried by a head 55 which is adjustable transversely of the bed-plate 56 by means of a screw 57, whereby the roller 53 may be moved toward or from the rim or flange 51 of the disk 50. A coiled spring'58 is provided on the screw 57 and said screw carries a collar 59 engaging one end of said spring. When the screw 57 is worked rearwardly to carry the collar 59 against the spring 58, the spring becomes compressed and exerts its force to press the roll 53 agaainstthe rim'or flange 51of the disk 50. y means of the screw 57, the pressure of the spring 58 maybe adjusted so .that it will be ample to so force the roll 53 against the skirt of thecap as to press said skirt against the inner forming surfaces of said rim or flange. The screw 57 is carried by a cross-head 60 and this cross-head is adjustable laterally toward and from the disk 50 by means of a screw 61, whereby the roller 53 may be entirely withdrawn from the disk 50 whenever so desired. I present Figs. 7 and 8 .to-jndicate a reversal of the operation of; a pbrtion of the mechanism shown inFig. 1. InFig. 1 the rim or flange 51 is stationary and the rolls 16 are caused to travel along its forming rim'or flange 11, and in Figs. 7 and 8 the rim. or flange 51 is the rotarymember, while the roll 53 is capable of independent rotation but otherwise stationary. I very greatly prefer the construction shownin Figs. 1 and 4, having used the same with great success.-

In the several forms of my invention hereinbefore described, it is to be observed that in transforming the plain skirt of the cap 33 shown in Fig. 2, to the shaperepresented in Fig. 3, the disk top of the cap 1s not at all I distorted, nor is that portion of the skirt numbered 35 in Fig.3 distorted, but is left in its original "shape, said portion. 35 being held in its original shape between the shoulder 26 of the forming roll and the adjacent surface 13 of the groove 12 in the formin rim or flange 11, as shown at the right han edge of Fig. 3. The portions of the skirt of the cap which are reshaped by the machines of my invention are the inclined intermediate section 36 and the flange 37 extending from the inner edge thereof. The part 36 is formed inwardly, as shown in Fig. 3, between the inclined surface 28 of the formingroll and the adjacent surface 14 of the rim or flange 11, and the flange 37 is positioned inwardly by the wall 15 of the forming-rim or flange 11 and the wall29 on the formingroll, said

portions

36, 37 being displaced inwardly along annular lines and creating the recess 34 to receive a gasket to engage the sides of the tumbler or the like to which the cap may beapplied. The inclined section 36 of the skirtof the cap provides a shoulder to support the gasket asvwell as creating the recess 34, which is closed at its lower end by said shoulder. In all the forms of my invention described, the forming rolls are exactly alike and all of them are less in diameter than the plain cap 33 shown in Fig. 2, and in each instance the pressure exerted against the skirt of the cap between the. forming-roll and forming-flange is cushioned, this being by the spring 23 of Fig. 4,"

the cushion 48 of of Fig. 8.

What I claim as my invention and desire to secure by Letters-Patent, is:

Fig. 6 and the spring 58 1. Ina machine of the character described for transforming the flat skirt of a partly formed closure-cap into a skirt having an annular recess at its} upper end to receive a. side-seal gasket, a flat base plate extending outwardly therefrom and having at its inner .edge an undercut groove, a forming roll to receive and being less in diameter than the cap and having a. shoulder and side surfaces conform ng to the groove and surfaces of said forming-flange and adapted to co-operate therewith in forming the annular recessin the skirt of the cap carried on said roll, means for effecting relative travelling movement between said roll and forming flange with the skirt of the cap held tightly between them, whereby the roll and cap are ro- .tated against said flange and the skirt of the cap is given a shape conforming to the forming-surfaces of said flange and roll, and having means back ofsaid roll for cushioning the pressure of the roll against the skirt of the cap.

2. In a machine of the character described for transforming the flat skirt of a partly formed closure-cap into a skirt having an annular recess at its upperend to receive a.

I side-seal gasket, a flat base plate extending outwardly therefrom and having at its inner edge an undercut groove, a forming roll to receive and being less in'diameter than the cap and having a shoulder and side surfaces conforming to the groove and surfaces of said forming-flange and adapted to co-operate therewith in forming the annular recess in the skirt of thecap carried onsaid roll, means for effecting re with the skirt of the cap held tightly between them, whereby the roll and cap are rotated against said flange and the skirt of the cap is given a shape conforming to the formingsurfaces of said flange and roll, and having a coiled spring back of said'roll for firmly and yieldingly pressing the roll against the skirt of the cap and said skirt against the surfaces of said forming flange during the an undercut groove adjacent to said plate,-

said groove being defined atone end by said plate, at its outer side by a plain wall standing at an angle to the plate and at its other end by an inwardly inclined wall, whence said forming-flange has a plain wall extendmg outwardly from said inclined wall, a forming roll to receive and being less In d1- v ameter than the cap and having a shoulder and side surfaces conforming to said groove and surfaces of said forming-flange and adapted to cooperate therewith in forming the annular recess in the skirt of the cap carried on said roll, a. coiled spring back of said roll for firmly and yieldingly pressing the roll against the skirt of thecap and said skirt against the surfaces of said forming flange during the shaping of said skirt, and means for effecting a traveling movement of said roll against said forming-flange with the skirt of the cap held tightly between them, whereby the roll and cap are rotated against said flange and the skirt of the cap is given a shape conforming tothe formingsurfaces of said flange and'roll, the top of the inverted cap being, during the forming operation, against the upper surface of said flat base plate.

4. for transforming the flat skirt of a partly formed closure-cap intoa skirt having an annular recess .to receive a side-seal gasket, a plate having a forming flange defining an arc of a circle and extending at an angle from the face of the late and containin an ative travelling movement between said roll and forming flange.

In a machine of the character described undercut groove 0ft e shape of the desired and having an annular shoulder and side surfaces conforming to the groove and surfaces of said flange and adapted to cooperate therewith in forming the annular recess in the skirt of the cap carried on said roll, and

means for effecting the travel of said roll along said forming flange with the skirt of the cap held tightly between them, whereby theroll and cap are rotated against said flange and the skirt of the cap is given'a shape conforming to the fcfiming surfaces of said flange and roll, the top of the cap during the forming operation being against said plate. the means for effecting the travel of the roll along the flange being a radial arm carrying the roll at its outer end and a driven shaft at the center of said circle and to which the inner end of said arm is secured, and saidradial arm being in two parts with an interposed spring between them, the outer part being slidable to permit the spring to press the same and the roll against said forming flange.

5 A machine as claimed in claim 4, in which the means for effecting the travel of the roll along the flange is a radial arm carr ving the roll at its outer end and a driven shaft at the center of said circle and to which the inner end of said arm is secured, and 111 which said radial arm is in two parts with an interposed spring between them, the outer part being slidable to permit the spring to press the roll outwardly to a limited extentbeyond the starting endof said forming flange and to effect the compression of the spring when the roll is carried against and moved inwardly by the starting end of said flange, whereby the spring is enabled to maintain the roll and cap pressed firmly against the flange during the travel of the roll along said flange.

Signed at New York city, in the county of New York and State of New York, this 8th day of March, A. D. 19:23.

. HARRY INGRAM. I