US1554840A - Safety envelope - Google Patents

Description

Sept. 22, 1925.

J. -BURRI$ SAFETY Envsmm Filed Sept- 23,

Patented Sept. 22, 1925, 1,5543% H i UNITE stares PATENT OFFICE.

SAFETY ENVELOPE.

Application filed September 23, 1924. Serial No. 739,338.

To all whom it may concern: and side, or top and bottom flaps 4 and 5,

Be it known that 1, JAMES BURRIS, a citirespectively. The end flaps 2 and 3 over zen of the United States, residing at Hoplap and each is formed with a slit 6. A strip kinsville, in the county of Christian and 7, of paper or other suitable material, has

5 State of Kentucky, have invented certain lateral cuts 8 in opposite edge portions ad- 55 new and useful Improvements in Safety jacent its ends and the part of the strip 7 Envelopes; and I do hereby declare the folbeyond the lateral cuts 8 are adapted to be lowing to be a full, clear, and exact descripfolded so as to pass through the slits 6 after tion of the invention, such as will enable Which they are extended to prevent withothers skilled in the art to which it apperdrawal of the ends of the strip 7 through 60 tains t k d use th same the slits 6. The strip 7 serves to connect the The present invention provides an enend flaps 2 and 3 and is formed with a longivelope which when closed may be sealed tudinal slit 9 which registers with corwithout using an adhesive or other addiresponding slits 10 in the end portions of the tional fastening means except those self confl ps 2 and 3 and which registering slits 9 tained within the article, and such envelope and 10 receive the end of the bottom flap 5 when sealed may not be opened without and which end has opposed lateral cuts 11 making detection possible because of inutilawh1cl1 enables edge portions of the flap 5 to @1 f th l be folded so that the end may be passed Oth bj t d advantages ill b through the slits 9 and 10 after which the 70 parent and suggest themselves as the nature parts are extended to prevent the with- -f th i ti i d t d, drawal of the end of the flap 5 through the lVhile the drawings illustrate an embodih 9 nd 10. The bottom flap 5 is formed nrent of the invention it is to be understood l h a Slit 12 which is adapted to receive that in adapting the same to meet differthe 1d Of he op flap 4: and which end has cut conditions and requirements, various opposed lateral cuts 13 which enable edge changes in the form, proportion and minor P PDI f he flap to be folded so that details of construction may be resorted to Its 611d may pass readily through the slit 12 ith t d ti f th nature f th after wh1ch the folded edge portions are exi v ti tended to prevent withdrawal of the end of 30 Referring to the accompanying drawing he fl p 4: through the slit 12. forming a part of the specification, It will be understood from .the foregoing Figure 1 is a rear view of an envelope emthat the invention provides an envelope bodying the invention as it appears when which may be made secure and sealed withsealed, out the use of an adhesive and which when 85 Figure 2 is a detail view of the envelope closed and sealed may not be opened without partly open, and inutilating the article to such an extent as to Figures 3 and at are detail views. render detection possible.

Corresponding and like parts are referred What is claimed is to in the following description and desig- -An envelope having opposite end flaps nated in the several views of the drawing by overlapped and provided with slits, a top like reference characters. flap, and a bottom flap, a strip having op- The envelope comprises two parts a blank posed lateral cuts adjacent its ends to adwhich when folded forms the envelope and mit of edge portions being folded and in a strip forming the connecting means he sertible through the slits of the flap and tween opposite ends and a bottom flap. subsequently extended to prevent with- The body of the envelope consists of a drawal of the ends of the strips through the blank of paper adapted to have its four receiving slits, the said strip and the over corner portions inwardly folded whereby to lapping end portions of the flap having provide a front 1 opposite end flaps 2 and 3 registering slits to receive the end of the bottom flap, said end having opposed lateral cuts to admit of edgeportions being folded and the end of the flap passed through the registering slits after which said edge portions are extended to fold the end of the flap from Withdrawal, the bottom flap havin a slit to receive the endportion of thetop ap which is provided with opposed lateral outs to admit of edge portions of the end of said top flap passing through the slit of the bot- 10 tom flap and subsequently extended to prevent separation of the parts.

In testimony whereof I aifix my signature.

JAMES BURRIS.

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