US1035686A - Can-closure. - Google Patents

Description

C. H. CAMPBELL. CAN CLOSURE. APPLICATION FILED PEB.3, 1012.

Patented Aug. 13, 1912.

dft7zeeses: Jar 371,507.- CKarZeG/{Cam/ 6 CHARLES H. CAMPBELL, OF CHELSEA, MASSACHUSETTS.-

CAN-CLOSURE.

Specification of Letters Patent.

Patented Aug. 13, 1912.

Application filed February 3, 1912. Serial No. 675,359.

To all whom it may concern:

Be it known that. I, CHARLES H. CAMP- BELL, of Chelsea, in the county of Sufiolk and State of Massachusetts, have invented certain new and useful Improvemehts in Can-Closures, of which'the following is a specification.

The present invention relates to that class of can, adapted to hold varnish, oils, etc., which is equipped with a nozzle for filling and emptying, and a removable cap for closing such nozzle.

The invention has for its object first to provide an improvement in the structure of such a nozzle, and second to provide a seal for an -external flangedw cap adapted to fit such a nozzle.

In the accompanying drawings, I have shown two modes, essentiallythe same in principle, but differing in matters of detail in whlch the invention is carried into efi'ect.

Figure 1 represents a longitudinal section of a part of a can having a nozzle made in acco'rdancewith the present invention and equipped with a capand sealing device for the cap, embodying the invention. Fig. 2 represents in section the nozzle cap washer and sealing device separated from one another: Fig. 3 is a plan view. Fig. 4 is a perspective view of the sealing device represented in Figs. 1 and 2. Fig. 5 is a view similar to Fig. 1, showing a slight modification in the sealing device. Fig. 6 is a perspective View of the sealing device represented in Fig. 5. y

The same reference characters indicate the same parts in all of the figures.

Referrin to the drawing, or represents X the body ofla can and brepresents the nozzle through. which the contents of the can are poured out. 'Both the body and nozzle are preferably made as usual of thin tinned sheet metal, commonly called tin. The noz zle is slightlyflaring from its point of attachment to the can toward its mouth, and is secured inany suitable Way, as by surrounding a lip 0 which is turned up from the can body around the outlet opening to which it is soldered. j v I The nozzle is formed with a surrounding downwardly turned flange or apron d,-i which may be made as an integral part of the nozzle by methods well understood and commonly practised by those skilled intbe art. Such flange or apron is designed to receive a closing cap and may either be shown in Fig. 5, where the cap forms a slip cover, the grip is frictional. Between the cap and the mouth of the nozzle is a packing washer or disk f of ,any usual character;

The helical grooves which form the threads in the form of nozzles shown in. Figs. 1 and 2, are made in a manner and by tools known and understood by those skilled in this'art, after the apron d has been turned over.

It will be understood that the construction of nozzle above described provides a one-piece nozzle which has a smooth interior without grooves or recesses in which heavy oils, varnishes or liquids of similar nature can collect and dry, and which is adapted to receive a plug stopper; and that the external apron provides means for bolding either a screw cap or a slip 'cover, and that the space between the apron and the body of the nozzle is wholly external to the latter and therefore will not admit any of the contents of the can while such contents are being discharged through the nozzle. The making of the nozzle body and apron in one piece provides a structure which is sufliciently facture. The construction of nozzle hereinbefore described'makes possible the application of strong and is economical to manu-.

a seal to secure a flanged cover or cap, a

' of seal is illustrated in Figs l to 4 and consists of a washer 9 made of such a size that its inner periphery fits closely about that part of the nozzle body in the plane of the lower edge of the apron d. The washer has a flange h which rises above a lipor shoulder 2' which is turned outwardly from the flange of the cover. The washer is placed over the small end of the nozzle before the latter is secured to the can, and is crowded by the nozzle until it bears against the edge ofthe apron d, which latter forms a shoulder or abutment for the washer. The flange h then projects toward the mouth of the nozzle.-

In using the washer to seal the cover of a completed and filled can, the cover is first screwed or slipped home until its lip 2' lies within the flange h. Then the flange is curled around the lip by a suitable tool in the manner shown in Fig. 1, being compressed so as to grip the lip 2' firmly. The seal extends from a point above the cover lip to a point under the apron d which locks the cover so that the cover cannot be removed without breaking the seal. For the purpose of enabling the seal to be easily destroyed by the lawful possessor of the can, I provide a tongue is integral wit-h the sealing washer, which extends from a point on its inner periphery and is bent down so as to lie against the outside of the nozzle as shown in Fig. 1, its ends being curved outwardly and upwardly where it may be easily grasped by the fingers or tweezers. The sealing washer is preferably made of .the same kind of tinned sheet metal as the other parts of the can and is formed by being stamped from a sheet. The die, which cuts out the part of the sheet within the washer,

' is so formed as to leave the tongue is, hence i with a providing such tongue does not require any more materlal than is provlded in the first place for making the washer and does not add to the expense.

In Figs. 5 and 6 there is shown form of seal differing slightly in proportions from that already described, and adapted to be applied after the cover or cap is in place. To permit of thus applying the washer which is designated at (7, its inner diameter is made sufiieiently great to pass outside of the cover or cap, but small enough so that the washer may rest on the lip i of the cover.

In applying the washer, it is placed so that the flange 71. projects downwardly instead of upwardly, and this flange is of such length that, when acted upon by a suitable tool, it may be turned under the cap and apron d and around a lip (2? inside the edge of the latter. I11 this case, however, as well as in the other, the sealing washer embraces the lip of the cover and a shoulder onthe nozzle in such a way as to secure the cover against removal without destruction of the seal. This form of seal also is provided tongue is for ripping it off, which tongue extends upwardly outside out the cover flange, as shown in Fig. 5.

I claim:

1. In a can, the combination of a nozzle having an external shoulder, a cover having a flange surrounding said nozzle and extending into proximity with such external shoulder, a continuous annular sealing washer surrounding the nozzle and engaged with said shoulder and the cover'flange, and a tongue formed integrally with the washer and extending from an edge thereof for breaking the seal.

2. A can nozzle having an external shoulder between its ends, a cover having a 'flange surrounding the nozzle and extending adjacent to said shoulder, being provided with an outstanding lip on itsedge, and a continuous annular washer surrounding the nozzle beneath said shoulder and embracing the same and the cover edge, said washer having an integral tongue whereby it may be broken away.

3. The combination with a can of a nozzle having an external tubular apron or sleeve portion, a cap having a flange tightly engaging said apron, and the cap cooperating with the nozzle to close the same tightly, and means for preventing undetected removal of the cap comprising a ring underlying the nozzle apron and cover flange, said ring and flange having interlocking lips,

and the ring being of thin sheet metal whereby it may be readily torn away.

4. The combination with a can of a nozzle having an external tubular apron or sleeve portion, a cap having a flange tightly engaging said apron, and the cap cooperat ing with the nozzle to close the same tightly, and means for preventing undetected removal of the cap comprising a ring underlying the nozzle apron and cover flange, said ring and flange having interlocking lips, and the ring being of thin sheet metal whereby it may be readily torn away, and having formed as an integral part thereof a tongue projecting from its inner edge or circumference.

In testimony whereof I have affixed my signature, in presence of two witnesses.

CHARLES H. CAMPBELL.

lVitnesses E. BATOHELDER, PETER W. Pnzznr'rr.

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