US823430A - Can-closure. - Google Patents

Description

No. 823,430. PATENTED JUNE 12, 1906. J. J. MOSER.

CAN CLOSURE.

APPLICATION FILED JULY 28, 1905.

UNITED STATES PATE NT OFFICE.

Specification of Letters Patent.

Patented June 12, 1906.

. Application-filed July 28,1905. Serial No. 271,667.

To all whom it may concern.-

Be it known that I, JOSEPH J. MOSER, a citizen of the United States, residing in West Covington, in the county of- Kenton and State of Kentucky, have invented certain new and useful Im rovements in Can-Closures, of which the ihllowing is a specification. I

It is the object of my invention to provide a new and improved can-closure comprising a can-body whose upper "end is turned inwardly toward the longitudinal axis of the can for forming a strengthening-web for said upper end and then upwardly and prefera y taperingly toward said longitudinal middle, and terminating in a cut lip extending outwardly of the can-body for forming a tapering mouth, the said tapering mouth receiving inside thereof an op ositely-tapered plug having a depressed we and an upper outwardly and sidewardly extending doublewalled bead, the out edge of the metal'of said plug be ng inside said bead, the mating side taces of said double-walled bead engaging the side faces of said lip in closing the can, the

' the can-body for locking the plug in position;

the can-body against the wall of said depending t'aperin part of the plug being expanded sideward y outwardly under and engaging the' sidewardly inwardly extending web at the top of the can-body, for locking said plug in position on the can-body againstoutward pressure from the inside of the can, but permitting the release of said plug by a wedging force ap lied at the to [of head of the pliig; and the invention will be readily understood from the following description and claims and from the drawings, in which latter F gure 1 is a side elevation of my improved devlce. Figi 2 is a vertical cross-section of a portion of t' e same, showing the plug presented to the mouth of the can-body ready for insertion of the plug. Fig. 3 is a similar view with the plug pressed into the can-body. Fig. 4 is a slmilar view of the same arts, showing the plug pressed into the canody, the tapering wal of the plug being provided with an outwardly-extending annular rib taking under the transverse web at the top of and Fig. 5 is a similar view with the annular groove at the top of the can-body provided with a packing.

1 represents the can-body, which has a mouth formed of an annular wall of sheet metal having a laterally-extending strengthening-web at its bottom. Thus 2 is an annular rim portion for the top of the can-body,

which has an outer depending flange 3 for forming a shoulder 4, upon which the rim portion is supported on the upper edge of the can-body, the rim ortion being secured to the can-body by sol der or in other suitable manner. The said rim portion has a sidewardly inwardly extending and slightly downwardly tapering annular part 5, merging into a semibead 6, from the inner edge of which the said rim portion projects outwardly and taperin ly toward the lon itudinal axis of the canody for forming t e annular wall 7 of the mouth of the can-body, the said annular Wall being in the form of an u right frusto-cone and having an outer cut e ge 8 of the sheet metal, from which said rim portion is formed. The said out edge or lip 8 preferablyprojects above the horizontal ne of the upper edge of the oanbody. An intermediate shoulder 9 is thus formed on the rim portion between the annular part 5 and the semibead 6 of the rimportion, the said parts forming a transverse inwardly-extending annular web for the rim portion arranged to transversely reinforce the lower end of the annular wall of the mouth of the can-body for purpose hereinafter eziplained.

15 is the plug or cover 0 the can and comprises an annular wall 16, taperin downwardly toward the longitudinal midd e of the can and being in the form of an inverted irusto cone at whose smallest diameter there is a transverse web 17 preferably extending below the horizontal plane of the web when the plug is seated, the upper edge ofsaid plu being formed with a bead preferably curve within the groove 11 formed in said web of the can for resting on said shoulder 9 when said lug is seated. The upper edge of the an ar wall 16 of the plug is referably formed into an annular outer dou le-walled head 18, as by continuing the upper end of said annular wall 16 with a lateral outward curve 19, merging into a downward and'inward curve 20, which continues into an 1nward upward curve 21 inside the curve 19,

the curve 21 continuing into an upward and outwardl extending curve 22, thereby forming a dou 1e bead having an outer wall and an inner wall whose mating sides are arranged to be engaged by the annular tapering lip of the mouth of the can, the sides of said tapering lip being on aged b said side faces of said double-wal ed bea for forming four r ing a wide belt of contact between the plug I dle of the can below said horizontal and mouth. The inner bead at the upper end of the plu acts with the outer bead at said upper en for pressing the said lip besaid beads and forming side contact-faces with the sides of said lip for providing a wide belt of contact to both sides of said lip formed of side faces which form close union with each other for making tight mating side faces on both sides of said lip. The inner bead also curling into the outer bead forms a wide mouth 23 on the plug for the re ception for the lip of the can, the said mouth contracting toward the inside of the outer bead for forming the close union between the side mating inside faces of said bead and the side faces of said li After the plug has been pressed home t e outer edge of the cut lip 8 will have changed its form and be presented outwardly from the lon itudinl middle of the can by reason-0f fin ing its fit on the tapering plug, the said upper edge of the said cut'lip referably extending above the horizontal ne of the shoulders at the upper edge 0 the can-body, the said li ta ermg outwardly from the'longitudina mi dle of the can above said plane after the plug is.

seated and tapering upwardly from its base and inwardly toward the longitudinal rlnid' ane after the seating of said plug, the said ower taper merging into the lower face of the semibead 6. After the plug has been seated the outer edge of the outer plug-bead preferably 7 takes against the shoulder 9 for forming an additional seat or joint for closing the can 1 a and pressing the inner bead between the wall of themouth of the can and said shoulder 9, thereby forming six mating continuous annular side faces closelyadjacent at the upper ed e of the can, the said six faces being in en stantiallythesame horizontal plane. The transverse web at the mouth of the can-body formsa transverse strengthening structure for preventing flexure of the cam at its top.

. The cut edges of said plug and rim portion are rojected in a common direction. The dgu le beading at theouter end of the plug and the beading of the rim portion form a triple combination bead curled in similar direction.

For securely locking the plug within the mouth of the can I laterally expand the lower end of the tapering side wall of the plug for forming a continuous annular rib 25, extending annularly and continuously about the lower end of the plug, the said rib being located in substantially the horizontal lane of the metal forming the/lower curl of t e semibead of the transverse web connecting the wall of the mouth of the can with the sideof said can, thereby forming an exceptionally strong construction in that the lower end of the lug is expanded against transversely-exten ing metal. The rib 25 extends annularly and continuously under the transverse web of the mouth of the can-body and forms a lock against the giving or retraction of the practice having been found to be so secure that 'oils and other liquids which it has been found impossible to retain in other frictiontop cans without leaka e are held in my improved device without eakage, and the construction of my improved device is such as to permit materially larger packages to be made with success with friction-tops than has heretofore been accomlished.

continuously-tight joint, and it has been found in practice that if a vertical incision be 'made by a fine-bladed saw in the top edge of the can, passing through the beads, the slot left by the saw will immediately close on removal of the saw-blade by reason of the resilient pressure exerted at all times u on the joints between the plug and can-mout Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A friction-to can havin'ga body whose upper end is provi ed with an inwardly latera y projecting annular web merging into an outwardly-projecting wall forming a mouth, said web comprising a curve at the bottom of said mouth, and a plug having tapering annular wall and an upper outer double-curled bead forming mating side faces facing each other in the inside of said bead at said taperin wall, the said wall of said body-mouth ta ing between said mating side faces in the inside of said double-curled bead of said plug, the said plug provided with an annular continuous rib extending laterally outwardly imjecting aterally and ownwardly taperingly toward the longitudinal axis of the can and merging into an upwardly-opening s ernibead for forming an annular laterally inwardly extending strengthening-web having an annular L shoulder therein and Iner 'ng into an annular wall extending upwar ly and taperingly toward the longitudinal axis of the can-body and being of frusto-conical shape and having an outer li formed of the cut edge of the sheet meta composing said rim portion, said lip projecting above the horizontal lane of the upper edge of the can-body, an a plug having an annular wall taperin downwardly toward the longitudinal axis 0 the can-body in the form of an inverted frusto-cone havin a connecting web at the smaller end thereo and an outwardly-projecting outer doublecurl bead at the outer end thereof, the outer and inner curls of said double-curl bead form ing adjacent side faces facing each other at the inner portion of said doub e-cur1 bead and forming an outwardly-flaring mouth at its bottom for receiving said lip, the outer edge of said bead taking against said annular shoulder in said rim portion, for forming six engaging annularly continuous side faces at the mouth ofthe can in substantially the same horizontal plane, the smaller end of the taper of said plug being expanded under the portion of larger diameter of. the taper of the can-mouth for forming a rib in substantially the horizontal plane of said stren thening- Web of said rim portion, substantialy as described.

In witness whereof I have subscribed my name hereto, in the presence of two subscribing Witnesses. i

J OSEPH' J. MOSER.

Witnesses:

HENRY N. BAUER, CORDELIA OHEARN.

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