US1318895A - Safety-envelop. - Google Patents

Description

F. MARTHAY.

SAFETY ENVELOP.

APPLICATION FILED JAN. 14. 1919.

1,318,895. Patented Oct. 14,1919.

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F. MARTHAY. SAFETY ENVELOP.

APPLICATION FILED JAN. I4. 1919- 1,318,895. Patented Oct. 14,1919.

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SAFETY-ENVELOP.

Specificationof Iletters Z Patent. Patei fed Application filed January 14, 1919. Serial No. 271,034.

To all whom it may concern:

Be it known that I, FRANK MARTHAY, a citizen of the United States, residing at Osaka, in the county of Wise and State of Virginia, have invented new and useful Improvements in Safety-Envelops, of which the following is a specification.

This invention relates to new andnseful improvements in envelops and the prlncipal object of the invention is to provide means for securely holding the envelop in closed position and also to provide means for sealing a portion of the flap to the letter to indicate whether or not said envelop has been tampered with by any unauthorized person.

Another object of the invention is to provide a device of this character which is simple and durable in construction, reliable and eflicient in operation and one which can be manufactured and placed upon the market at a minimum cost.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 shows the blank from which the envelop is formed with the adhesive material in place thereon.

Fig. 2 is a view with the end flaps closed and the other flaps open.

Fig. 3 is a view with the bottom flap closed and the extension flap in turningover position.

Fig. 4 is a view of the closed envelop.

Fig. 5 is a section on line 5-5 of Fig. 4.

As shown in these views the envelop consists of a body 1, the end flaps 2, the lower flap 3, the top flap 4 and the extension flap 5 which is connected with the top flap. One of the end flaps is provided with a slot 6 while the other end flap has a pair of slits extending inwardly from its free end to form a tongue 7 which is adapted to be passed through said slot 6. These two flaps are held together by this tongue and the adhesive, as indicated. After these ends are connected together the bottom flap is folded over and gummed to these flaps. The extension flap is connected with the edge of the top flap, as shown, and at the point of connection a crease is formed so that the extension flap may be folded upon the inner face of the top flap. The extreme end of the extension flap is provided with a line of perforations as at 8. The inner face of the strip 9 formed by this line of perforations is covered with adhesive, as shown, so that this strip may be gummed to the letter or contents of the envelop. The outer face of said extension flap at the end thereof beginning at a point marked 10 and extending through to the line of perforations is also covered with adhesive. A crease 11 is formed midway of this adhesive coated part just mentioned so that this creased line may be folded over when the upper flap 4: is folded. After the envelop is formed and the letter. or contents inserted the adhesive on the strip 9 is moistened and the extension flap folded over and this strip pasted to the letter. The adhesive, above the line 10, is moistened as is also the adhesive on the side edges of the top flap 4: and then this top flap with the extension flap folded over on to the rest of the envelop. This will cause the side edges of the top flap to stick to the body of the envelop while the adhesive above the line 10 will stick to the top edge of the end flaps and thus securely hold the envelop closed. When the envelop is opened in removing the letter the strip 9 will be torn on the perforated line so that this strip will remain on the letter.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is An envelop having an extension flap on its top flap, a strip at the extreme end of said extension flap separated therefrom by a line of perforations, said strip being gunnned on its inner face for attachment to the inclosure and the extension flap below said strip having a coating of'adhesive on its outer face and a crease extending across said coated part of the flap, said adhesive being attached to the end flaps after the extension flap is folded upon the top flap previous to closing the envelop by folding H] the top flap upon the other flaps.

In testimony whereof I affix my signature.

FRANK MARTHAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, I). G.

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