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Publication numberUS1691394 A
Publication typeGrant
Publication dateNov 13, 1928
Filing dateFeb 13, 1924
Priority dateFeb 13, 1924
Publication numberUS 1691394 A, US 1691394A, US-A-1691394, US1691394 A, US1691394A
InventorsHeinrich Karl
Original AssigneeHeinrich Karl
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sanitary preserving food container such as cans or boxes of any shape
US 1691394 A
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Description  (OCR text may contain errors)

Nov. 13, 1928.


Patented Nov. 13, 1928.


srinrranv rnnsnnvrne noon eon'ramnn soon AS runs on BOXES OF ANY SHABE.

Application filed February 13, 1924. Serial No. 692,524.

The great danger that threatens the health of the consumer of the eatables contained in preserving cans or boxes made 01 metal which must be opened with a can-opener orother instrument whereby the metal must be cut or torn off, is caused by small partieles of the metal that fall into the catables when the can or box is being opened. These small metal particles cause injuries to the intestinal organs when swallowed with the foodintg which they fell. i

The main object of the present invention is therefore to create such preserving cans and preserving boxes which can be opened in such a waythat no small metal particles will falliinto the eatables contained in said cans or boxes.

Another advantage is that there is no canopener or other instrument necessary for opening the ioodcontainer.

A further advantage is the employment of relatively few parts, which simplifies the manufacture and'tlierefor'edessens the cost or [this kind of container.

Other advantages will appear as the specificatiol progresses.

In the accompanying drawings Fig. 1 shows a can of cylindrical shape and cover therefor that shows one embodiment of the invention; (the dotted line shows the place wherethe can'is to be hermetically closed, that is, soldered). Fig. 2 shows a can of cylindrical shape similar to that of Fig. 1 and cover therefor that shows also the improvement of Figure 1, which cover however is provided with a screw-winding which fits to the screw windprovided' on the corresponding part of the container.

' Fig. 8shows a rectangular box'with cover, 1

such as might be used tor canning sardines this box having also the improvements of Figures 1 and 2. V Fig. 4L shows the modification ofthe invention as'illustrated also with Figures 1, 2 and '3; in Figure it the can is shown as being closed. i

5 and 6 show another modification of the invention. Fig. 5 shows the can closed, while in Fig. 6 the can is opened. I

Fig. 7 shows other modifications "of the invention whereby the container is hermetically closed and soldered on top instead of on the sides as shown in Figs. 1 to 6.

To best suit this invention, the cans 2, 3

or 4', etc., or boxes 5 etc, must be ofthe kind which are provided with such covers 7 8, 9, or 10 respectively, that have turned down borders 11, 12, 14 or 15 respectively. When the can is'o'f a cylindrical shape such as shown in Fig. 2 the downwardly turned border may be provided with a screw-wind ing 16 which must lit the screw-winding 17 that is provided on the corresponding part of the containerQ. It is however not an absolute necessity that the borders of the cover be downwardly bent, and the cover may be of a smaller diameter, circumference respectively, than that of the container, such as a can or box (see for instance Fig. 7

One of the novel features resides in'the manner of hermetically closing and solder ing the can or box at the part where the border (or lower edge of the turned down border) is situated when the cover is on the can or box; and consists also in means whereby no can-opener or any other instrument is necessary for opening'the'ca'n or box, and by that'this invention shows another advantage over other hermetically closed and soldered preserving food containers such as cans or boxeswhich can be opened enl'y by means of can-openers or like instruments.

7 According to the modification'of Figs. 1', 2, '3 and 4, the novelty consists of a' cover 7, 8or 10 which on its downward bentborder v11 or 120i 15, respectively, is provided with downward flaring metal-flaps 22 which simply stay 'close to the sides of the con t ainer without, however, gripping or exerting pressure to any part 01" the container. soft solder is applied between the containers 2, 3 or 5 respectively, and the downward bent borders 11, 12 or 15, respectively, at the place which 'corr'e'sponds'in height to the parflthat outside is indicated by the dotted lines 30 shown in Figure 4.. The

solder or other binder must extend as far upward as indicated by the dotted lineBO so that no leak will be formed by-the slit ends that reach as far {LS indicated by the dotted line 30.. By turning up each'flap 22 with the fingers or by means of a suitable instrument such as pincers so far that their bending point is situated at '30 '(see Figure 4), the part 11 will be loosened from the solder and the cover is then so farseparated from the container that it can be removed completely without causing small metal articles tofall into the 'eatable's."

By lifting the flaps 22, that donot serve for gripping the container, as far that the bending point is at it is obvious that the slits or incisions that separate these flaps from each other will be forcibly elongated, that is, the sheet metal of the part 11 somewhat above theupper end of the slot (which end is at 30) will be ruptured to a certain extent so as to be completely freed from the can to which this part is soldered. In order to permit the tearing up of themetal when the flaps are-to be lifted with the fingers, it is necessary to use a soft metal such as tin or lead etc., or an alloy of such metals for part 11 and the flaps 22 thereof. The metal used for these parts can be soft be cause these flaps do not need to be flexible, as is necessary with spring lips or the like that have to grip. The characteristics of the can of Figure 1 and the method of sealing it applies also to the cans, boxes, respectively, illustrated in Figures 2 and 3.

There is also a certain advantage by rupturing the metal at the inner slit ends when the can is to be opened because it will be readily seen by the purchaser of such cans or boxes that the same had been opened already if the metal is ruptured.

The same principal is applied to the device shown in Fig. 5. Compared with the devices of Figs. 1, 2, 8 and 1, the difference consists simply in that there is a strip 31 which on its upper part is dentate'd or which forms flaps while the lower border.

maybe straight. As shown in Fig. 6, the part 31 is united with the can-body a and the soft solder is applied between the lower part of the flaps and the downward bent border 14: of the cover 9. By turning down the flaps as far as to have the bending point at 32 whereby part of the strip 31 will be ruptured in a similar way as has been explained in connection with the part 11 of Fig. a, the cover will be separated from the part 31 to which it was soldered, and can be removed from the can without causing small metal-particles to fall into the eatables. The part 31 is preferably soldered first to the downward bent border 14 and whenthe eatables are in the can (or box) the cover is put on the can (or box) andthe part 31 is soldered at 33 to the can 4 (or box) Referring more particularly to Fig. 7 in which another modification of the invention is shown, the cover 25 of the can (or box) has a-smaller diameter than the container 26. It is therefore apparent that the solder ing (or hermetically closing) must be made onthe top of the container, and the cover must therefore receive the incisions on its circumference. It is necessary therefore to have the cover still lying on a top-portion'27 of the container. The opening left by said top-portion of the container therefore will be still smaller than the cover. The edge of the top-portion of the container may be rounded.

For taking off the cover it is simply necessary to lift the flaps 22 outwardly with the fingers or with a tool similarly to the modi- .fications illustrated in Figs. 1 to 6 inclusive and thereby break the solder or any other kind of binder that is employed. 1 Also by using this modification of the invention no metal particles will fall into the eatables contained in said can (or box).

The flaps 22 of the can shown in Fig. 7 being of the same character as those of the cans or boxes shown in Figs. 1 to 6 inclusive 7 permit also the tearing in of the metal of those modifications that might be fairly em bodied in the spirit and scope of the invention.

I claim:

1. In a container including a cover, a part c made of sheet metal and ser'vingfor uniting said cover with said container and for hermetically closing the container by means of a binder, and being positioned more or less remote from the opening of the container,

said part having incisions which are made so that there is always a flap left between two of said incisions, these so formed flaps placed close to the container. when it is closed but so that they do not grip or exert pressure whatsoever thereupon or to, said cover, the binder applied at the inner side of said part in such manner thatsaid flaps are left free from binder, said flaps adapted to be pulled outwardly to such an extent with the fingers or with some tool that the portion of said part to which the binder is applied will be pulled away from the container and thereby ruptured and said. binder broken or separated therefrom thus permitting the removal of the cover from the container wit-bout causing particles of the sheet metal or particles of the binder to fall into the contents of the container. 7 i

'2. In a food container with a cover, the

cover having a part made of soft sheet metal arranged remotely from the opening of the container and the border of said part formed by fiaps,'said flaps held .close to'the container without, however, exertingv pres sure thereupon, said part united with the container by means of a binding materialso as to hermetically close the container but leaving the flaps free from said binding material, the flaps adapted to be pulled outwardly with the fingers to such an extent that the sheet metal of said part will be torn in and the portion of said part to which the binding material is applied pulled away from the container thus breaking the binding material and thereby permitting the removal of the cover from the container without causin particles of the sheet metal or of the binding material'to'fall into the con tents of the container. r

3. In a container with a cover, a part of sheet metal soldered to the'container thus hermetically closing the container, said part having incisions made in a manner that flaps are formed said flaps held close to the container but not exerting pressure thereupon, said flaps left free from solder and adapted to be bent outwardly to such an extent with the fingers or by means of a suitable tool that the "soldered portion of said part will be pulled away from the container and thereby ruptured, breaking the solder and permitting thereby the removal of the cover from the container without causing particles of the sheet metal or of the solder to fall into the contents of the container.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2416693 *Aug 6, 1943Mar 4, 1947Hills Bros CoffeeContainer construction
US5979690 *Nov 19, 1997Nov 9, 1999Berry Plastic CorporationReclosable rectangular container assembly with tamper indicator
US7775389 *Mar 17, 2006Aug 17, 2010Poppet International Pty LtdClosure for containers
U.S. Classification220/276
Cooperative ClassificationB65D7/38
European ClassificationB65D7/38