US1755297A - Can - Google Patents

Description

E. HILDEBRANDT April 22, 1930.

CAN

Filed Nov. 17, 1926 N N a F ma NF. E0 V M H M W D E 0% ATTORNEY ti as w atente p i930 amt EDWARD EILDEBRANDT, F TACOMA, WASHINGTON CAN Application filed November 17, 1926. Serial No. 148,898.

This invention relates to improvements .in

cans and more particularly to cans of that type having a cover that is frictionally held thereon; the invention being in the/nature of an improvement upon the constructions shown in U. S. Patents Nos. 1,562,639 and 1,564,958, issued respectively on November 24, 1925 and December 8, 1925. 7 It is theprincipal object of this invention to provide a can body that has no restricting flange or shoulder within its opening, which is provided with an out-turned bead about its rim and an outwardly projecting shoulder encircling the body in spaced relation below the rim which serves to stifien and strengthen the body against bending and also as an abutment against which a knife or other tool used in prying ofi a cover may be placed. It isalso an object of the invention to pro- 2 vide a cover for the can having a peripheral, inverted, U-shaped trough in which a sealing compound is held and which is adapted to fit over the rim of'the can body in a friction ght and securely sealed connection and erein the outer wall of the trough is crimped in such manner that it will securely grip about the flanged rim of the body to providea more secure hold than is effected in the devices of the above numbered patents and wherein the outer rim of the cover is not weakened by the slitting required to provide the telltale tongues.

Another object is to provide the can cover with a telltale tongue of a form. which will positively insure its being broken ed in case the cover is raised from the can and which is formed without slitting the rim of the cover as in the above patents, but is so located as to leave the edge of the rim unbroken so 7 to that a tool may be engaged therewith at any point forprying ofl' t e cover..

Other objects reside in the various details of construction and combination of parts as will hereinafter be described and illustrated in the accompanying drawings, wherein- Figure is a side view of acan embodying the resent invention. 1

Figure 2 is an enlarged, sectional v ew through the can body and cover taken on the 0 line 2-2 in Figure 1.

Figure 3 is an enlarged view showing the telltale tongue and its relation to the rim bead whenthe cover is in place.

Figure 4 is a sectional detail of the rim of the cover. v

Referring more in detail to the drawings- 1 designates the can body which is of cylindrical form and provided at its rim wlth a small out-turned head 2. Formed about the body, by pressing the metal outwardly therefrom, is an encirclingledge or shoulder 3 providing a substantially fiat top surface which serves as an abutment for a knife, coin or other tool used to pry 0d the cover. I

The cover designated at 4 consists of a flat disk provided about its periphery with winverted, U-shaped groove or trough 5 adapted to snugly receivetherein the beaded rim of the body. Within the base of the trough is placed a small amount of sealing compound 6, preferably of a'rubber compound solution 'which, in drying, forms a coating of rubber by which tight sealing of the cover on the can is insured. The. outer wall of the trough is crimped inwardly at a point just below the bead as at 7, and this crimp serves to frictionally and more securely hold the cover in place.

About its lower edge, or rim, the outer wall of the trough is provided with a small outwardly and upwardly curled head 8 to provide a mouth edge and to stillen the rim.

in order that unauthorized opening ofthe can, by removal of the cover, can be detect ed, 1 have provided a telltale in the formof a triangular-1y shaped tongue 8 that is pressed inwardly from the side Wall of the trough; The apex of this triangular tongue points upwardly and is connected by a narrow strip 10 with the body and is scdred so that, if the tongue is bent outwardly, it will break ofl at the scored point; In use, after a cover has been sealed onto a can, the tongue is bent inwardly beneath the bead 2 about the rim of the can body, as in Figure 2, then when the lid is removed the telltale tongue will be broken ofi.

Assuming that the can and cover are so constructed, it is readily apparent that, after the sealing compound is placed in the trough of the cover and the cover applied to the can,

a perfectly tight sealed connection is provided and the cover will be frictionally held by crimp about the outer wall of the trough which fits beneath the bead 2. It is further apparent that the encircling shoulder of the can prevents contact of anything with the cover that would cause it to be accidentally removed and also serves as an abutment against which a knife may be used to pry the cover loose when it is desired to open the can. It is further apparent that since the edge of the cover is not slit in forming the telltale tongue as in the patents above noted, the rim is held more secure, it insures a better sealed connection and permits its being pried loose at any point. The telltale tongue, being broad, provides a secure hold on the bead yet is easily broken off due to the narrowness of the connecting portion.

While it is not so illustrated, it is to be understood that covers of this character may be used as successfully on glass jars or other containers as on the tin cans.

Such covers are especially desirable on cans of large diameter but may be used on small cans as well.

Having thus described my invention, what ll claim as new therein and desire to secure by Letters Patent, is: t A can comprising a body having an outwardly projecting bead extending about its mouth, a cover for the can having a downturned peripheral flange fitted over and ex tending below the bead about the mouth of 85 the can body; said flange having a triangularly shaped tongue pressed inwardly therefrom, leaving the lower rim of the flange intact, separated from the flange along its base edge and along its side edges to a point closely adjacent the vertex of the tongue, leaving a narrow connecting portion adaptedto be broken by twisting the tongue; said ton ue being pressed back and beneath the bead thereby drawing the base end of the tongue upward- 5 ly within the narrow portion of the opening that is formed by removal of the tongue from the flange, and thereby necessitating that the tongue be twisted in order to permit its removal outwardly through the opening. to Signed at Seattle, Washington, this 5th day of June, 1926. Y

EDWARD HILDEBRANDT.

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