US2117738A - Packing for perishable victuals - Google Patents

Description

May 17, 1938. o. METZGER 2,117,738

PACKING FOR PERISHABLE VICTUALS Filed Nov. 21, 1935 ATTORND Patented May 17, 1938 PATENT OFFICE PACKING FOR PER ISHABLE Otto Metzger. Nuremberg, Germany, assignmto Verelnigte Deutsche Metallwerke A.-G., Zweigniederlas'sung Snddeutsche Metallindustric,

Nuremberg, Germany Application November 21, 1935, Serial No. 50,844

In Germany November 2'1, 1934 ZOIaimS.

Packings of the most different kinds have already been used to safely store perishable victuals in liquid as well as in solid state, for instance milk, coffee, oil, and fat, nutritive powders, biscults, sugar and the like, to allow despatching or sending victuals ready for use or taking them along on travellings, walkings and similar occasions. These durable packings are known as tins made of tinned sheet-iron, containers of waterproof material or metal tubes.

Tins as well as containers of water-proof material have the disadvantage, that they may not at all or unperfectly only be closed again after having been opened, so that the contents still remaining in thepacking means cannot be taken along any more, as they would discharge. Moreover, the great danger always exists, that in these opened tins or other packings perishable victuals quickly decay, so that the whole contents must necessarily be consumed all at once.

Tinshaving soldered covers, particularly tins of small dimensions, are relatively expensive and the opening of such tins which is effected by cutting off the cover is always rather troublesome.

As a rule, containers of water-proof material do not allow sate storing of perishable victuals, as sterilizing of the contents is not possible which, in most cases, is desired and very often is absolutely necessary. Such containers may, on taking along on traveliings or walkings easily be damaged by blows or pressures acting upon them which result in discharge of the contents.

Metal tubes as a rule may be used to store victuals in form' of a paste only, as the cap of the tube is not adapted to tightly close the tube and to prevent escape of liquid victuals. Liquid victuals, therefore, must first be converted to a paste by a method which makes this manner of storin expensive. Moreover, on account oi the end of the tube being formed as a collar and neck for the reception of a screw-cap or a push-on cap. these metal tubes themselves are an expensive packing.

Now, the subject matter of the invention consists, in a packing having, with regard to known packings, the following properties and advantages:

The novel packing is formed as a thin-walled metal-bag, is of .small form and has, in spite of its low weight, suflicient stability to be easily and safely carried along. The packing according to the invention is equally suitable for the storing of liquid as well as of solid perishable victuals; The new metal bag.iurthermore,allows intermittent consumption or the contents and repeated air-tight closing of the packing, so that even under these circumstances, a safe storing of perishable victuals is warranted. As the packing is formed as a metal bag, the contents may be sterilized, themetal bag being able to withstand the required pressures. The metal bag is very easy to handle, is reliable and yet may be manufactured on a quantityproduction scale at a low price without sacrificing any of the advantages.

The novel packing bag according to the invention is characterized by the fact, that it consists of a thin-walled hollow metal body the .side wall of which is made in one piece with the bottom and the upper opening of which, serving to .1111 the bag, may air-tightly be closed by pressing fiat. and folding the flattened metal at the edge. said bag being, below the folded portion, provided with indentations not piercing the material which serve to open the bag by tearing oil the folded portion, The indentations not piercing the material may, after filling and folding the bag, be obtained by means of pincers, may, however, also be made before filling the bag in which case this operation may be performed simultaneously with the machining of the edge of the bag.

In the accompanying drawing one embodiment of the subject matter of the invention is shown by way of example. I

In this drawing:

Fig. 1 is a front elevation partly in section of a metal bag according to the invention ready for being filled before closing,

Figs. 2 and 3 are. views of theclosed metal bag seen from the broad side and the narrow side respectively,

Figs. 4 and 5 are views of the opened metal bag seen from the broad side and the narrow side respectively, and I Fig. 6 illustrates a front elevatienal view of a modified embodiment of the invention.

As shown in Fig. l, the bag is made inone piece as a cylindrical hollow metal body, consisting for instance of aluminium or another metal. The bag comprises the cylindrical side wall a the lower end of which is continued by the bottom b. The latter is plane or smooth and serves as stand bottom for the metal bag. The upper opening of the bag, serving as filling opening, is, as shown in Figs. 2 and 3, air-tightly closed by pressing flat the edge e of the metal bag and fold ing or rolling the flat pressed material, so that a special closing memberis not required.

The cylindrical side wall a is, as shown in Fig.

1, provided with a row of notches or indentations dwhich do not completely pierce the wall of notches or indentations d is so arranged as to lie below the fold c after the edge of the metal bag has been i'olde If the contents of the packing, bag are to be consumed, the folded portion 0 is torn ofi at the row of notches or indentations d, whereupon the bag may, as shown in Figs. 4 and 5, completely be opened by separating its juxta-positioned walls from each other. in a solid or liquid state may then be taken out or poured out respectively.

The side wall of the packing bag may also be provided with a plurality of rows of notches or indentations which are then arranged one below the other in a distance to allow repeated folding and closing of the already opened metal bag. In this manner, the bag, holding the rest of the contents, may and spill-proof manner in case it has not been completely emptied. A packing bag of this character is shown in Fig. 6 in which reference character al denotes the side walls, bi the bottomwall and oi the folded portion of the container, and reference character dl denotes a plurality of rows of indentations.

As the metal bag according to the invention does not require a special closing member and as it is, moreover, of very simple form, it may be manufactured at extremely low cost and, therefore, may be sold at a substantially lower price than tins, tubes or other packing means used hitherto.

The victuals to be stored in the metal bag may remain in their original form in which they are used, so that expensive intermediate processes are not required. By means of the new packing it is for the first time possible to take along on travellingswalkings, a great number of diflerent victuals, so that the field of useof these victuals is very substantially enlarged.

The particular feature, characterizing the metal bag according to the invention, is that it is for the first time possible to intermittingly consume the contents of the container without The contents which may be be closed again in an air-tight I 2,117,738 of the metal bag, but weaken it only. The row any danger of spoiling and discharging the contents during further storing.

What I claim is:

1. A packing bag for the preservation and storage of perishable victuals in liquid and solid state comprising an integrally formed thinwalled metal container capable of resisting to sterilizing temperatures and pressures and having side walls of substantially cylindrical form prior to the filling and sealing thereof, a flat bottom wall integral with said side walls, a fillingopening defined by the upper edge of said side walls, the upper terminal portions. of said side walls being flattened out and pressed together in juxtaposed relation after the filling operation, a fold locking said flattened terminal portions and airtightly sealing said container, and a row of indentations in said terminal portions and in proximity of said fold for weakening said portions without perforating the same whereby tearing oil. of said fold and opening of said container are facilitated.

2. A packing bag for the preservation and storage of perishable victuals in liquid and solid state comprising a thin-walled metal container capable of resisting to sterilizing temperatures and pressures and having side walls of substantially cylindrical form prior to the filling and sealing thereof, a flat bottom wall integral with said side walls, a filling opening defined by the upper edge of said sidewalls, the upper terminal portions of said side walls being flattened out and pressed together in juxtaposed relation after the filling operation, a fold locking said flattened terminal portions andair-tightly sealing said container, and a plurality of rows of indentations in said terminal portions in parallel spaced relationship with each other and with said fold for weakening said portion along said rows without perforating the same whereby said container may be closed several times by folding the extremity of said terminal portions and may be opened by tearing oil the fold along one of the rows of said indentations.

O'I'IO METZGER.

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