US 1803348 A
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May 5, 1931. PASURKA I 1,803,348
' ENVELOPE Filed May 13, 1929 i? I @M QZUE TEL Patented May 5, 1931 cIiAnLEsrAsuRxA, or CHICAGO, ILLINoIs ENVELOPE Application fileci May 13, 1929. Serial No. 362,734.
My invention relates to improvements in envelopes.
One of the objects of the invention is to provide an improved envelope which when sealed may be quickly and conveniently opened without the use of mechanical shearing devices. In this connection I aim to provide an envelope which is so formed as to have all of the advantages of a sealed envelope, but which, by reason of a previously scored margin, may be easily opened by tearing off a marginal portion of the envelope along the scored line.
more specific object is to provide an 5 envelope of the above character in which the scored lines on opposite sides of the envelope are located out of alignment-that is to say, at differently spaced locations relative to the adjacent edge of the envelope, whereby the marginal portion of the envelope will not readily bend or fold along the scored lines, but which nevertheless, will be sufficiently weak to permit the scored marginal portion to be readily torn along the scored lines.
Another object is to so form the said .scoring by a series of small perforations and to so curve. the lines on opposite sides of the envelope that they will align with each other at opposite edges of the'envelope, the perforated lines of the several flaps on the back of the envelope being so curved that they will coincide with each other when the said flaps are folded one upon another.
A further object is to provide an envelope of the above character with a marginal surface between the scored line and the adjacent edge of the envelope which will serve to direct the attention of a recipient of a letter to-the purpose of the perforated margin. In this connection I aim to provide one or both sides of the perforated margins with an undulating surface for example, by
crimping, embossing or indenting said surface.
In the drawing: J Fig. 1 illustrates the front side of an envelope made in accordance with my invention. Fig. 2 shows .the back of the envelope with a portion of the sealing flap turned upwardly to illustrate the manner in which the scored lines coincide when the said envelope is sealed.
.Fig. 3 is a sectional view taken on line 33' of Fig. 1.
In the drawing 1- have shown one preferred embodiment of my invention in the form of an ordinary letter envelope. It should be understood, however, that this 60 particular type and size of envelope is shown herein merely for the purpose of convenience and that the principle of the invention can be readily embodied in various size envelopes and analogous containers.
The envelope herein shown is made from a paper blank having a plain front side 10 and angular flaps 11, 12 and 13, the latter of which are turned inwardly and sealed together to form the back of the envelope. The flap 12 preferably, but not necessarily, overlaps the lower margins of the flaps 11 and 13. The reference numeral 14 indicates the sealing and closing flap of the envelope. In order to facilitate the opening of the envelope, I provide opposite faces of the envelope and preferably, though not necessarily, at opposite ends, with score lines 15 and 16, arranged at different distances from the adjacent edge and extend across the envelope. 8 The lines define narrow marginal strips on the front and back of the envelope which, being weakened along the scored lines, may
i be readily torn off along said lines by pulling on the perforated margins in the plane of the envelope or by the well known lateral shearing twist of said marginal portions. The lines 15 and 16 are preferably perforated and are curved near the middle of the envelope to provide thumb and finger recesses 17 and 18 when the end margin of the envelope is removed.
The ends 19-19 of the perforated line 16 preferably curve toward and join the perforated line 15 at the upper and lower edges 5 of the envelope. The portions 20-20 of the line 15 which extend across the flaps 12 and 14 are curved so as to coincide with the curved portions'19-19 when the envelope is sealed.
The space between the perforated line 15 we and the adjacent edge of the envelope may be and preferably is crimped or otherwise suitably formed with a series of undulations 21, which serve to directthe attention of the recipient of the letter to the perforated lines along which the envelope should be opened and which also by overlapping one of the perforated lines serves to reinforce the marginal portion of the envelope.
1. An envelope adapted to be opened by tearing and having a perforated line extending across the front adjacent one edge of the envelope, a perforated line extending across the back thereof adjacent said edge to provide lines along which said end 1s severed when opening the envelope, the said perforated lines being arranged out of alignment to resist folding of the envelope along said lines.
2. An envelope adapted to be opened by tearing having a perforated line extending across the front adjacent one edge of the envelope and a perforated line extending across the back thereof adjacent said edge to provide lines along which said end portion is removed when opening the envelope, the said perforated lines being located at different distances from the end of the envelope, but joining one with the other at the upper and lower margins thereof.
3. An envelope having perforated lines extending across the front and back, respectively, defining front and back marginal surfaces of different widths, the said marginal surface of one side of the envelope bein formed with a series of diagonally dispose undulations arranged in staggered relation to reinforce the perforated marginal portion of the envelope.
4. An envelope having perforated lines extending across the front and back, respectively, defining front and back marginal surfaces of different widths, the said marginal surface on one side of the envelope being crimped to provide said surface with a series of undulations which extend across the perforated line on the opposite side of the envelope.