Патент USA US2060145код для вставки
Nov; 10, 1936. W- M~ VOGEL 2,0605145 CAN CLOSURE AND METHOD OF MAKING THE SAME Filed OCÍ‘.. 19, 1935 20 lmmuluuunl'lm.... f' W WH ' ' ' ‘' ` , f1.9 16H |i Il'. „il 3 1|li|‘1 'l 1 2 31 - ‘M 33 ' 25 2s . ì l ' @y a ,23 - \\\ 25 is m ._ ' ' 22 Í "NNUU H la ’7 ‘2f I8 ,9 v ' lNVEN-roR ?/¿wm ingu z/¿gd Patented Nov. 10, 1.936 2,060,145 PATENT OFFICE UNITED STATES 2,060,145 CAN CLOSURE AND DIETHOD 0F MAKING THE »SAME William Martin Vogel, Bloomfield, N. J. Application October 19, 1935, Serial No. 45,727 8 Claims. (Cl. 113-19) metal from vwhich the cover and its retaining flange-are both formed. Disk I0 in its initial The‘object of the invention is to provide a `form is merely a fiat circular section of metal. simple, effective form of closure for the »types of and by means of a suitable forming die, it is` ‘5 cans customarily used for containing liquids, and caused to assume the cupped form shown in Fig. 1, 5 where'the cover when initially applied must pro having a raised central portion II surrounded by This invention relates to cans and to an im proved method of making closure means therefor. vide a secure, liquid-tight ñt’while at the same the laterally extended marginal flange I2. Mem time must permit-ofeasy manual removal and ber I0 is next cut into two parts, as shown in Fig. 2 by severance through its sidewall at a point between the closed end of the raised part l0 II and flange I2, along the line I3, the upper cup-shaped one of these parts indicated at Ilv being used for the formation of the cover, while replacement. 10 . » ` __ l ' A further- object of the invention is to provide a simple method of making the closures whereby I the number of manufacturing operations are de creased and considerable saving of sheet metal is also effected, resulting in a highly satisfactory 15 closure at a lowered manufacturing cost. A still further object of the invention is to provide an -the lower ring-shaped part indicated at I5 being employed to produce the cover-retaining ring or 15 annulus. To form the cover as shown at I6 in Fig. 3, member I4 has the edge of its vertical cans whereby a perfect seal is provided between iiange'll rolled to form the edge-reinforcing bead the cover and its retaining ring, insuring a liquid ' I8, and for the purpose of providing reinforce ` improved means of applying the covers of the 20 tight fit of the cover and at the same time al lowing its easy removal and replacement. y In the accompanying drawing, Fig. -1 is a sec tional view through a dished disk from which l both »_ the cover member and its retaining ring 25 are produced; Fig.-2 is a similar sectional view, showing the disk cut into the two parts which _are ment, it may also be dished slightly as shown 20 at 23. Vertical ñange I9 on member I5 consti tutes the inner edge or termination of the cover retaining ring, as clearly shown in Fig. 3, while lñange I2 is operated upon by a suitable die to _shape it as clearly shown in Fig. 3 and to provide `25 used'to form-the cover and its retaining ring; the annular channel 20 and downwardly extending outer ñange 2|. . Fig. 3 is a‘sectional view of aportion of a can, The upper edge of the can 22 fits into channel _ showing the retaining ring shaped and ñtted into 20 and is secured therein by seaming‘methods 30' position on the upper edge of the can body and the Vwell known -in 'this art, whereby thelcover- 3 cover about to be inserted within said ring; retaining ring is securely attached to the top of Fig. 4 is a- sectional view of the upper end of a the can body in the position clearly shown in _ " _ ` -can with the retaining ring and cover in place, Fig. 3. _showing the‘fexpanding disks about to exert lat- ` After the can has been' iilled, the cover is '-35 eral pressure upon the flange of the cover and - pushed into place within the retaining ring, the jdependeni» inner flange of the retaining ring to \ partsof cover and'retaining ring- then occupying laterally distortY both flanges; Fig. l5 is a view the position shown in Fig. 4 where it will be seen of the same structure as is disclosed in Fig. 4, that vertical flange I'I of the cover is surrounded Ishowing the flanges on the cover and retaining by and lies in close contact with the downwardly ¿o ring after- being distorted to vsecurely hold the extending fiange I9 of the retaining ring. By cover in place within the ring; Fig. 6 is a view of the n'ext step in the method, distortion of the a modified type of expanding disk employed for flange IT of the cover and in some cases, of the distorting the cover flange only; Fig. 7 is another iiange I9 of the retaining ring, takes place. One form of disk which distorts the cover flange and Way in which this step is carried outis shown 45 the retaining ring in a slightly different manner; in Fig. 4. For this, a number of rotating shaping Fig; 8 shows another type ‘of disk which forms disks 25 are employed, each of said disks having interengagingannular ribs on the cover flange its peripheral edge so shaped as to engage a. and on tlîe iiange of the retaining ring; and Fig. 9 portion of the flange I1 of the cover while rthe is a sectional view of a modified structure where disks are being rotated and simultaneously 50 in the- inner edge ñange on the retaining ring is spread apart from one anotherhorizontally, and extended upwardly, and a rounded bead is dis force a. part of said flange outwardly. torted out of ’the ñange of the cover to lock be-' In Fig. 4 the edge or >periphery 26 of each of neath- the curved portion of the retaining ring the several disksvis so shaped that when the disks flange. are thrust laterally, the edge 264 of each disk `will 55 In the drawing IIIA indicates@ disk or sheet distort the flange I_-'I of the cover member out- 35 40 - „ 45 5o 55 - 2 - 2,060,145 wardly and also slightly distort the ñange I! of ' prising, forming a disk into a cup-shaped mem the retaining ring outwardly, substantially as shown in Fig. 5, This lateral distortion ofthe two contacting flanges I1 and i8 will serve to ber provided with a laterally extending annular so interlock the cover with the retaining ring that an eifective seal between the cover and ring is produced; At the same time iiange I1 pos flange and the closed end òf the cup-.shaped sesses suil‘icient resiliency or springiness to per mit the cqver to be easily pried up out of the re said ring tothe top of a can in such a position that it is provided at its inner edge with a down flange, severing said member on a line parallel to the plane of the flange at a point between the member to form the member into a cup-shaped cover and an annular retaining ring, attaching 10 taining ring by the insertion of a suitable tool wardly extending annular iiange, seating the 10 beneath the rolled or beaded edge Il of the cover. ._ cover within the ring1 with the closed end of the In Fig. 6 a modiiied type of shaping disk 45 is cover positioned below the lower edge of the 'downwardly extending flange on the'ring, and laterallydistorting a partof the cover onlyand adjacent to its closed end to cause it to‘be ex 15 shown,saiddiskbeingsubstantlallythin,sothat when moved in a direction parallel to the plane 15 of the disk, the edge thereof will distort the part 30 only of the flange I1 of the cover, without dis tended laterally below the lower edge of the torting thegdependent ñange I! of the retaining ñange on the ring. ring. 2. In the method of making-a can closure, the steps of seating a cover member having a cir 'I'his distortion of the ñange I1 of the cover serves to force a part of said flange later ' ally and beneath the lower edge Il of flange I9 cumi’erential iiange within a retaining ring lo of the retaining ring, providing a secure seal cated on a can top, and distorting the flange on and cover lock. the cover member laterally to cause the - torted In Fig. 7 another type of disk 46 is shown, the ' portion to >project beneath the lower edge of the same having a stepped periphery 32 which serves ' retaining ring without distortion of the retaining to distort the flange oflthe cover as well as a part ring. of the flange Il of the retaining ring to form an annular rib or bead 33 which engages with the outwardly distorted part IIa of the retaining r1ng_ ‘ , In Fig. 8 the disk Il is shown provided wi an annular rib l! on its periphery, which by pressure of the disk against flanges I1 and IS _ 25 - 3. In the method of making a can closure. the 'steps of attaching a iianged ring-shaped cover retainer to the top of a can, placing a cup-shaped , cover member within said retainer so that a ñange on said cover member is in contact with 30 and extends co-extensively. with the flange on the retainer, and thereafter providing an‘inter locking annular groove and bead on‘the flanges distorts theseV flanges to form the interlocking beads Il and 31 on flanges I 9 and I1 respectively. 'of the cover member and retainer at a distance . In Fig. 9 the retaining ring Il diifers from that above the respective lower edges of the same by 35 shown in the several figures of‘the drawing, since forcing said groove and bead portions of said , it has the nange IQ’directed upwardly on curved ` flanges outwardly simultaneously. lines rather than downwardly. _ The disk 38 there j 4. The method of making a can closure com shown distorts the iiange I1. of the cover member prising, forming a disk into a cup-shaped mem to form annular, rounded, curved projection 39 which extends underneath the upturned or curled iiange Il of the cover retaining ring. In the several embodiments of the invention 'shòwnrin Figs; 4 to 8 inclusive,'the resiliency of ber provided with a closed end and a side wall from which extends a laterally projecting annular flange, severing said` member thr hits side ' the- cover member flange I1 is suiiicient to enable wall on a line parallel to the plane of thel mem ber and at a point between theiiange and the closed end of the cup-shaped member to separate~ it to be sprung or distorted to disengage the cover fromthe retainingringbytheuseof any annular flanged retaining ring, attaching said' the member into a vcup-shaped cover and an manually operated prying tool. In Fig. 9 how ring to the top of ,a can in such a position that ever, where iiange Il of the retaining ring is» its flange‘is located at its inner edge, seating the formed on a curved'line, the resiliency inthis' -cover within the ring with the closed end of the Y flange provides the springinesshnecessary to per-_ cover positioned adjacent the lower edge of the mit the cover to be sprung out of lits engagement flange on the ring, and laterally distorting a part with the flange by a prying movement. _ ~ of the cover` only to cause it to be extended' la The rotating shaping disks employed for the erally below the flange on the ring. ' . lateral »distortion of the' cover iiange. or for the/ 5. A closure for cans comprising a ring secured 55 distortion of the cover- flange and retaining ring'I to the top of a can body, said ring having a flange, are made in various forms according to the manner in which it is desired to interengage the cover with its retaining ring. I, therefore, do not limit my invention to the use of any speciflc edge,_ a cup-shaped cover member iltted‘within that these disks may be varied in their periph end >of the cover to for'm an annular projection downwardly bent flange extending along its- inner said ring, said cover-member having a verticallyv disposed annular circumferential flange, with form of cover shaping disk, since it is obvious v parts of said ñange distorted adjacent the closed eral shape to suit different requirements f_or pro viding a greater or lesser effectiveness of seal -for the can. '_ , '- - _ 1 engaging below the lower edge of the ñange on the ring. ` ' ' - '6. A closure for cans comprising a ring> secured to the top of a can body and provided with an ~By means of the process of manufacture herein outlined, it will be obvious that a cover and its inner upwardly curled edge, a _ cover member retaining Vring can be economically and. eiïecf iitted within said ring andy having a closedend tively produced from a single disk 'of metal vwith 70 out any material waste, with a reduction in the and an upper edge formed with a bead limiting 70 steps normally required for the manufacture oi the insertion of the cover -within the ring by abut-_ _ _ a closure of this character, andwith a resultant _reduction in_manufacturing 60st. ` " What I claim is: , ment against the uptumed inner edge of the ring, the cover member having'a circumferential iiange , extending from the bead, said flange being formed l.‘The method of m a can 010mm? çom- " with an annular outwardlyl distorted portion ad' 75 3 jacent its closed end for engagement beneath L„he curled inner edge of the ring. '7. A closure for cans comprising, a ring se cured to the top of a can body and provided with an inner downwardly extending flange, a. cup shaped cover member fitted within said flange and having a closed bottom located below the lower edge o`f said flange, said cover` having a circumferential vertically disposed wall bearing 10 against the flange and of greater depth than the width of the flange, said wall having a straight portion extending below the lower edge of the flange and a locking bead adjacent its upper edge, said flange being complementarily grooved to en 15 gage the locking bead on the walll of the cover. 8. A closure for cans comprising, a ring se cured to the top of a can body, said ring having a downwardly bent flange extending along its inner edge; a cup-shaped cover member ñtted within said ring and having a closed lower end lo cated below and spaced from the lower edge of the flange, said cover member having a vertically disposed circumferential wall bearing against the ñange, with portions of the wall and flange dis torted to interengage and hold the cover in place within the ñange, said cover having undistorted or straight wall portions located below the lower edge of the flange. WILLIAM MARTIN VOGEL.