US941525A - Envelop. - Google Patents

Description

R. LANDENBBRGBR.

ENVELOP.

APPLIOA'I'ION FILED MAY 16. 1907.

Patented Nov. 30, 1909.

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RALPH LANDENBERGER, OF CHICAGO, ILLINOIS.

,ENVELOP.

Specification of Letters Patent.

Patented Nov. 30, 1909.

Application filed May 16, 1907. Serial No. 373,943.

lb all whom it may concern:

Be it known that I, RALPH LANDENBERGER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Envelops, of which the following is a specification.

My invention relates in general to station- 'ery, and more particularly to envelops.

Commercial envelops are usually oblong and comprise symmetrical side flaps and top and bottom flaps, the points of which overlap in a plane at the center of the envelop and at right angles to the top and bottom edges thereof. In cutting the blanks in the manufacture of such envelops considerable of the stock is wasted owing to the spaces between the flaps.

The primary object of my invention is to provide an oblong envelop which may be made from an oblong blank without removing portions of the blank to form the flaps, thereby economizing in the consumption of the stock from which envelops are made.

A further object of my invention is to provide an oblong envelop, the oints of the side flaps of which will lie in di erent planes parallel to the top and bottom edges of the envelop and the points of the top and bottom flaps of which will lie in different planes parallel to the side edges of the envelop.

A further object of my invention is to provide an envelop which will be simple in construction, economical in manufacture and convenient in use.

The embodiment of my invention herein disclosed may be generally described as consisting of an oblong envelop made from an oblong blank having notches cut in the longer edges thereof at unequal distances from the corners and notches cut in the shorter edges intermediate of the corners, such notches serving to define the lines upon which the flaps are folded to form the-envelop, whereby the points of the side flaps will lie in different planes parallel to the top and bottom edges of the envelop, while the points of the top and bottom flaps will lie in different planes parallel to the side edges of the envelop.

My invention will be more fully described hereinafter with reference to the accompanying drawings in which the same is illustrated as embodied in convenient and practical forms, and in which- Figure 1 is a plan view of the blank; Fig.

2, an elevational view of the blank folded to form an envelop having one of the longer flaps open to permit the insertion of the communication; and Fig. 3, an elevational view of the blank folded to form an envelop having an end flap open to permit the insertion of a communication.

The same reference characters are used to designate the same parts in the several figures of the drawings.

Reference character A indicates a blank formed of any suitable material, such, for instance, as paper stock. Notches a and at are cut in the shorter edges of the blank at points intermediate of the adjacent corners, while reference characters a and a indicate notches cut in the longer edges of the blank, such notches being nearer one pair of diagonally opposite corners than the other pair of diagonally opposite corners.

In order to form the envelop the portions B and 13* of the blank are folded inwardly along parallel lines 6 and 72* extending between the respective pairs of notches a and a and a and a The portions B and B of the blank are folded inwardly along the parallel lines I) and 6 extending between the respective pairs of notches a and a and a and a.

The bottom flap B may be folded over and secured to the side flaps so that the top flap B may be unattached to the other flaps to permit the insertion of a communication after which it may be folded over and secured to the portions of the side and bottom flaps which it overlaps. This form of envelop is shown in Fig. 2.

If desired, the top and bottom flaps may be folded inwardly and secured together, and one of the side flaps, as 13*, folded over and secured to the adjacent portions of the top and bottom flaps, the other end flap being left open to permit the insertion of a communication after which it is folded and secured to the adjacent portions of the top and bottom flaps.

It will be understood that the blank may be folded in any desired way to form an oblong envelop, and one of each of the overlapping portions of the envelop is provided with an adhesive to secure the overlapped portions of the flaps together. If desired, when the envelop 1s used unsealed for second-class matter, one end flap, as for instance, B in Fig. 2, will not be secured to the overlapping portion of the bottom flap B After the communication has been in serted in the envelop, the top flap 18 then secured by moistening the adhesive thereon to the underlying portions of the other flaps,

so that the contents will be securely inclosed without the envelop being entirely sealed.

In manufacturing my improved envelop an oblong blank, such as shown in Fig. 1, 1s first cut in any suitable manner, as by means of a large cutting machine such as used by printers and paper houses for cutting paper. The notches in the edges of the blank are then cut by another operation.

WVhile my improved envelop is preferably manufactured by the process above described, yet, if desired, it may be made with cutting dies in the manner usual in the manufacture of envelops.

From the foregoing description it will be observed that I have invented an improved envelop which by reason of'the shapes of its flaps may be made from an oblong blank, thereby obviating the waste incident to the manufacture of oblong envelops heretofore constructed.

It is evident that my improved envelop involves practically no waste of the stock from which it is made, inasmuch as portions do not have to be cut away in order to form flaps as must necessarily be done in the manufacture of oblong envelops comprising symmetrical side flaps and top and bottom flaps, the points of which overlap in the. same plane at the vertical center of the envelop.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent is A rectangular envelop comprising a continuous side and a side consisting of four triangular flaps the apex of each of which is a right angle, the opposite flaps of each pair being symmetrical and the triangles of one pair being larger than those of the other pair, said envelop being formed from a rectangular sheet of paper having a notch in each of its edges, the bases of said notches lying at the corners of an inscribed rectangle of the size of the completed envelop, one of the diagonals of said rectangle being parallel to and midway between two of the edges of said rectangular sheet.

RALPH LANDENBERGER. lVitnesses GEO. L. HLKINSON, ANNIE C. COURTENAY.

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