US604723A - Doub-le envelop - Google Patents

Description

'(NO Model.)

S.. DOUBLE BNVELOP.

Patented May 31,1898.

A1 Tram/Ey;

UNTTED SdtarlsA ATENT OFFICE.

lVAL'lER SCO'IT'CARVER, OF BLOOMFIELD,NET J ERSY.

DOUBLE ENvELoP.

u SPECI-FTCATION forming part of Letters Patent No. 604.723, dated May 31. 1898.

'Application iiled August 4, 1897. Serial No. 647,074. (No model.)

To altwhowt. it may concern.: Be it known thatl, WALTER SCOTT CARvER, a citizen of the United States, anda resident of Bloomfield, in the county ,of Essex and State of New Jersey, have invented certain new and useful Improvements in Double Envelops, of which the following is a specification.

This invention relates to a certain new and useful improvement in twin y or double' envelops, and has for its object theeconomical production of two envelops .from a single sheet of material in -which no seams will appear on the front faces and which .may be used either together or be readily detached and' used separately or be bound with similar envelops between suitable covers to constitute a file.

To .these ends thereforem'),7 said .iislventienV consists'in a peculiarly-shaped 4blank properly folded and in the details of construetion, all as hereinafter more particularly def scribed, and pointed out `in the claims.

designated, Figure lis a plan view of a blank. Fig. 2y is a similar view showing the blank folded over once' transversely and with the end flaps or seams in position. Fig. 3 is a back viewof theenvelop completed. Fig. 4

is a vertical sectional view taken on the line no Fig. 3. Fig. 5 is a perspective View of `myinvcention when bound to constitutea file.

, Figs. v6 and 7 show blank and completed envelopsiembodying my invention, but of different shape when completed from those shown in Figs. l and 3. 4 v l: f

The blaukl prefer touse is shown in Figs. l and 6, and consists of a single sheet o'f'any appropriate material shaped to form the central substantially rectangular portion ab,

4divided by -a transverse fold or crease ,c c

into two symmetriealand oppositely-disposed halves, each of which is pro'vided with diagonallyI opposite fiaps d and d', the similarly` arranged gummed'end iiaps e and e', and, if desired`,witl1 the diagonally opposite notches or ,cutsfandf When it is desired to provide jfor the separate use ofthe envelops, a row of perforations f/ gis formed along the central longitudinal line of the blank, said perforations being supplanted by a simple the face of b.

fold or crease when the envelops are designed to be used together. The blank is gummed 'on both 'sides of the line g g.

' In forming the twin'ordouble envelop from the blank, a fold is made on the line c c, and part o. of the blank is folded by revolving it on the line c c from left to right down upon The end. flap e iis then revolved from right to left and gurnmed over the part "a, and the gummed end iiap e is folded overion the part .b ,from left to right,

presenting the appearance shown in Fig, 2

and leaving the front faces of the envelops plain 'and free from seams. The two envelops'tlius lformed are then folded together on the crease or line of perforations g g, presenting the appearance shown in Fig. 3, and producing two envelops joined together at heir-*bottom line, the object of gumrning along said line being to separate the pockets of the two envelops, and whereY perforations are used vto permit the envelops to be detached from each other and each remain per- In the accompanying drawings, in the sevf eral figures of which like parts are similarly feet and'intact.

l have illustra-ted in Fig. 4 a modification double envelops may bev bound together at .their meeting edges, as by sewing or pasting,

'on tape, muslin, parchment, dto., or hinged be tween suitable covers t, as in Fig. 5.

In Figs. 6 and 7 the arrangement and ina- I nipulation of the blank are the same as abovedescribed, but the dignensions and shape of the resultant envelops are different, being of greater depth than width, whereas the envelops shown in Fig.V 2 are of greater lwidth than depth. When desired, my blank may be used as a single large envelop, as in Fig. 2, by omitting the crease or perforationsv g g and gum along their lineand folding over one of the 'flaps d or d to close the bottom, one of the said iiaps being in this case gummed in place. While I have shown each of the envelops provid ed with covering-flaps d and ol',it will be obvious that one or both iiaps may be omitted, that one flap may be made 4larger than the other, that the flap of the outer en-l IOO velop may be made large enough to cover both, and that one or both of said flaps may or may not be gummed. In Athe several views the gummedportions are indicated by crosshatching. y

What `I claim as my invention, and desire to secure by Letters Patent, is-

1. A double envelop composed of a blank formed'of a single piece of material and coinprising a substantially rectangular portion a, b, provided with diagonally opposite end flaps e and e', and folded upon itself, substantially as described.

2. A double envelop composed of a blank formed of a single piece of material and comprising a substantially rectangular portion a, b having a central longitudinal row of perforations, and the diagonally opposite end flaps e and e and properly folded upon itself, substantially as described.

3. A double envelop composed of a blank formed of a single piece of material and coinprising a substantially vrectangular portion a,

- b, provided with the diagonally opposite end ilaps e'and e', and properly folded upon itself, in combination with spreading strips or substantially as described.

5. A plurality of double envelops,each com posed of a blank formed of a single piece -of material and comprising a substantially rectangular portion a, b, having the diagonally opposite end flaps e, e', and each blank properly folded upon itself, to constitute two united envelops; said envelops being bound at their meeting edges between suitable eovv1ers, substantially as described.

i Signed at New York,in the county of New York and State of New York, this 30th day of July, A. D. 1897.

WALTER SCOTT CARVER.

Witnesses:

ADoLPH SCHROEDER, GEORGE 0.* WILLIAMS.

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