US2372331A - Preset pressure can for frozen foods or the like - Google Patents

Description

Mam}! 27, 1945- R. o VICO 2,372,331

PRESET PRESSURE CAN FOR FROZEN FOODS OR THE LIKE Filed Sept. 10, 1943 v a V1 17 5 -5. (Q144 ,1715

INVENTOR. Eosarz'o L0 1 560 AT TORNE Y Patented Mar. 27, 1945 PRESET PRESSURE CAN FOR FROZEN FOODS OR LIKE Rosario Lo Vico, Astoria, Long Island, N. Y.

Application September 10, 1943, Serial No. 501,776

8 Claims.

This invention relates to new and useful improvements in present pressure cans for frozen foods and the lake materials. This application is a continuation-in-part of my application Serial No. 347,368 filed July 25, 1940, issued on December 14, 1943, under Patent Number 2,336,490.

More specifically, this invention contemplates a preset pressure can having a hollow cylindrical can body with hermetically sealed end walls. It is proposed to provide a non-stretchable rod extending axially of said can body and being fixedly attached at its end portions upon said end walls. It is furthermore proposed to provide a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod.

It is another object of this invention to provide novel means for fixedly attaching the end portions of said rod with said end walls.

The invention further contemplates a novel arrangement and construction of the continuous score line to facilitate puncturing the can when pressure above the preset pressures are reached.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:

Fig. 1 is a perspective view of a can constructed in accordance with this invention.

Fig. 2 is a central vertical sectional view of the can shown in Fig. 1.

Fig. 3 is a perspective view of another can constructed in accordance with another form of this invention.

Fig. 4 is a vertical central sectional view of the can shown in Fig. 3. a

Fig. 5 is another vertical sectional view similar to Fig. 4 but illustrating a modified form of can.

Fig. 6 is a fragmentary enlarged detailed view of a top portion of Fig. 5.

Fig. '7 is a fragmentary plan view looking in the direction of the line l'! of Fig. 6.

l'he preset pressure can for frozen foods and the like materials, as embodied in Figs. 1 and 2, includes a hollow cylindrical can body I0 provided with the usual hermetically sealed end walls H. These end walls are double seamed upon the ends of the can body l0 in the usual way.

A non-stretchable rod i2 extends axially of said can body 10 and is fixedly attached at its end portions upon the end walls II. More specifically, the rod I2 extends through complementary openings in the end walls Ii. Its extremities are provided with heads i3 which are welded or in any other fashion hermetically connected with the end walls H. A continuous score line 14 is impressed upon or formed on one of the end walls and divides off a small area l5 around the adjacent end portion of the rod i2. The score line H3 is shown of circular design, though it could be fashioned in other designs.

The operation of the present pressure can is as follows:

The can is used in the usual way for holding and preserving frozen foods, and the like and other materials. The canautomatically opens when the internal pressure exceeds a preset amount. When this occurs the end walls ll tend to bulge outwards. However, the non-stretchable rod 42 holds the central portions of the end walls fixedly together. Consequently, the weakened score line M will rupture and the can thus is opened.

In Figs. 3 and 4 a modified form of the invention is disclosed which is very similar to the prior form, distinguishing in the fact that the continuous score line H3 is arranged in triangular formation, and in the fact that the end of the rod i2, which is adjacent the score line H, is secured to said end wall it in an improved fashion. More specifically, the end wall ti has an outwardly drawn socket portion 56 into which the end of the rod l2 extends. This end portion of the rod is formed with niches or recessed or roughened portions ll. The socket portion is is tightly pressed on to the end portion of the rod i2 so that the pressed in portions thereof will engage and grip the roughened portions H. In other respects this form of the invention is identical to the previous form and like parts are identified by like reference numerals.

In Figs. 5 to 7 still another form of the invention has been disclosed which is similar to the form shown in Figs. 3 and 4, but distinguishing in several respects. In this form of the invention the non-stretchable rod W" has both of its ends secured to the end walls 9 i by the use of socket portions it formed on the end walls ii and engaging and gripping the end portions of the rod l2". To facilitate the gripping operation the end portions 82 of the rod 32" are fashioned to simulate frusto-conical figures, and the drawn sockets is are similarly fashioned, see particularly Fig. 6.

A triangular shaped puncturing member 20 has its edge portions extending along thescore line M. This puncturing member 20 is also formed with a socket portion 2| engaged upon and clamped on and gripping the socket portion [8. The puncturing member 20 is made of relatively hard material so that when the end wall ll bulges up around it, the puncturing member 20 will readily cut and so puncture the said end wall.

A feature of using the socket portions upon the end walls of the can for gripping the end portions of the axial rod, resides in the fact that the end portions of the rod may be tightly gripped without necessitating openings in the end walls which are liable to leak even though sealed.

It is to be understood that the scoring may also be on the inside of the canned body ends as well as on the outside. The scored area may be eit er on the riveted end of the canned body or at the end where the socket has been drawn.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United rod. 1

2. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod, said rod extending through openings in said end walls and being provided with enlarged end heads extending over and covering said openings and being welded for hermetically sealing the same.

3. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing of! a small area around the adjacent end portion of said rod, said score line being circular.

4. A preset pressure can for frozen foods and the like materials having ahollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod, said score line being of triangular shape.

5. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing oil a small area around the adjacent end portion of said rod, one end of said rod being fixedly attached to its end wall by extending into a socket portion drawnfrom the end wall and clamped thereon.

6. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod, the end portions of said rod being fixedly connected with said end walls by the end portions extending into drawn socket portions formed upon the end walls.

7. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod, the end portions of said rod being fixedly connected with said end walls by the end portions extending into drawn socket portions formed upon the end walls, and rigidly clamped thereon.

8. A preset pressure can for frozen foods and the like materials having a hollow cylindrical can body with hermetically sealed end walls, a non-stretchable rod extending axially of said can body and fixedly attached at its end portions upon said end walls, and a continuous score line upon one of said end walls dividing off a small area around the adjacent end portion of said rod. and a puncturing member having cutting edges extending along said score line and having a socket portion engaged and clamped upon one of said socket portions.

ROSARIO LO VICO.

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