US2269849A - Valve bag - Google Patents

Description

W. E. HAHN Jan. 13, 1942.

VALVE BAG Filed March 6, 1940 Fatented Jan. 13, 1942 so s'inrssrnran'r oriucs 2,269,849 7 vanvc Ban Willard E. Hahn, Wellsburg, W.

Va, assignor to Arkell & Smiths, cahajoharie, N. Y., a corporation oi New York Application March 6, 1940, Serial No. 322,469

Claims.

' valve opening.

The preferred form of the invention is illustrated, by way of example, in the accompanying drawing, in which: 7

Figure l is a side view of oneend portion of the bag with the end partially closed;

Fig. 2 is a similar view with certain of the plies partly broken away;

Fig. 3 is a side view of the completed bag with the central portion broken away to save space;

Fig. 4 is a detail scale, taken on'the line 5- .1 of Fig. 3; and

Fig. 5 is a similar view after the bag is filled and the valve closed.

'The bag illustrated in the drawing, is made of three plies i, 2 and 3 of paper, but the number of piles maybe varied. The ends of the bag may be closed by the usual type of satchel end closure which comprises inwardly folded corners or end flaps 6i and 5; and side flaps d which are folded over on lines, and pasted to the end flaps and to each other, areas-of glue or paste it being previously applied to the end flaps.

In accordance with the present invention, the outer ply of the end flap is cut to form a flap I2 which has its free end directed outwardly and its inner end positioned a distance beneath the lateral ends of the side flaps 6. The inner end of said ply flap it may be creased on a line It.

The next ply 2 of the endflap is provided with a transverse slit directly beneath the inner end crease M of the sectional view on an enlarged it which is arranged It and into said pocket formed between the inner plies 2 and 3,.

flap l2, and is of such width as to be adapted to receive the outer end of the flap H.

The plies 2 and 3 of the end flap l2 have their inner ends secured together by adhesive It so that when the flaps of the satchel ends are folded over and pasted, a pocket is formed between the plies 2 and 3, the pocket opening out through the slit as.

With this construction in filling the bag, the filling nozzle may be easily inserted beneath the ply flap I2, between the plies I and 2 and into the interior of the bag. When the bag is filled and the filling nozzle is withdrawn, the ply flap i2 may be easily inserted or tucked through the slit ,Such tucking in of the flap I2 may be easily and conveniently accomplished as the filling nozzle is withdrawn. The tucking in Ofthe flap l2 securely and tightly closes the valve-opening so as to obviate the danger of finely divided material sifting out through the opening. Also, the walls of the slit i8 and the overlying side flaps of the bag, securely hold the valve flap in place.

While the invention is illustrated as embodied in a pasted or folded ended bag, it will be apparout that except as defined in the claims certain features thereof may be employed in other types of bags.

As will be evident to those skilled in the art, my

invention permits various modifications without departing fromv the spirit thereof or scope of the appended claims.

What I claim is:

VI. A bag having walls comprising a plurality of layers of paper andhaving an end closure formed by folding upon each other flaps formed from said end of the bag walls, one of the, underlying flaps having a flap cut in its outer ply having its free end directed outwardly to form a valve opening through which a filling nozzle may be inserted beneath the flap and between said ply and the underlying ply and into the interior of the bag, said underlying ply having an opening therein in which the end of said ply flap may be inserted to close the valve opening.

2. A multi-ply bag having a satchel type closure formed at one end, one of the corner flaps of the closure having a flap cut in its outer ply having its free end directed outwardly and its other end positioned beneath said side flaps of the closure to form a valve opening through which a filling nozzle may be inserted beneath the ply flap and between said ply and the underlying ply, said underlying ply having an opening through which the end of the ply flap may be inserted to close the valve-opening.

3. A bag having walls comprising a plurality of layers of paper and having an end closure formed by folding upon each other flaps formed from said' end of the bag walls, one of the underlying flaps having a flap cut inits outer ply having its free and directed outwardly to form a valve opening through which a filling nozzle may be inserted beneath the flap and between said ply and the underlying ply and into the interior of the bag, said underlying ply having an opening therein and having its under side secured to the ply beneath to form a pocket into which the end of said ply flap may beinserted to close said opening.

4. A multi-ply paper bag having a flap cut in its outer ply to form a. valve opening therein through which a. filling nozzle may be inserted Gil closed and a corner thereof folded inwardly to form an inwardly directed flap. said corner flap having a flap cut in its outer ply having its free end directed outwardly to form a. valve opening through which a filling nozzle may be inserted beneath the flap and between said ply and the underlying ply into the interior or the bag, and an opening in the underlying ply into which the end of the ilep may be inserted between said ply WHLARD E. HAHN.

b and the ply beneath.

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