US1209109A

US1209109A - Safety-envelop.

Info

Publication number: US1209109A
Application number: US7867516A
Authority: US
Inventors: Hans Bossart
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-02-16
Filing date: 1916-02-16
Publication date: 1916-12-19
Anticipated expiration: 1933-12-19

Description

H. BOSSART.

SAFETY ENVELOP- APPucATloN msn FEB. 16. 191s.

1,209,109. y Ptented De@.19,1916.

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SAFETY-ENVELOP.

Specification of Letters Patent.

Application filed February 16, 1916. i Serial No. 78,375. l

To all whom t may concern.' Be it known that 1HANS vBossAR'r, a citizen of the United States, residing at Span Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in'Safety- Envelops, of which the following is a specication. f

This invention -relates to an improved safety envelop and the principal object of the invention is to provide an envelop which is so constructed that it may be folded and securely held in the folded condition without the necessity of applying glue or any other adhesive, an improved type of button and socket being provided for releasably holdingthe envelop in the closed position.

Another object of the invention is to so construct this envelop that the button and socket will be concealed when the envelop is folded thus preventing the opening of thel envelop without tearing the envelop.

This invention is illustrated in the accompanying drawings, wherein Figure 1 is a view of the blank from which the envelop is formed. Fig. 2 is a view showing the envelop partially folded and ready to have the letter inserted. Fig. 3 is a'view showing the envelop further folded and ready for closing and sealing. Fig. 4 is a fragmentary sectional view showing the manner of folding the envelop in the closed position.

The blank 10 is provided with side portions 11 and 12 and upper and

lower portions

13 and 14 which form the side or end flaps and upper and lower Haps of an envelop when the blank is folded as shown in Figs. 2`and 3Q This blank will be folded along the

dotted lines

15 and 16 to form the Side flaps 11 and 12 and will be folded along the

dotted lines

17 and 18 to form the upper and lower flaps. After the side flaps 11 and 12 have been folded with the side flap A11 resting upon side flap 12, the upper and lower iaps will be folded along the dotted lines 19 and 20 thus providing

side extensions

21 and 22 folded one upon the other and reinforcing the upper and lower `flaps of the envelop.

After the envelop has been folded as Shown in Fig. 2, the letter will be placed in the envelop and this envelop will then be folded as shown in Fig. 3. Upon the side or end Hap 12 there is located a socket 23 `and upon the upper flap 13 there is located fastener 24k formed from sheet lmetal stamped to provide prongs orsnap l,hoolirs 25 which prongs are bent to extend as Shown yin Fig. 4. It should `be noted that the plates from which the socket 23 and fastener 24 are formed are curved transversely and Patented Dec. 1:9,-19161 sev therefore a very secure fastener will be prol vided when the resilientV prongs l25 are forced through the opening 26 of the socket 23. When foldedas shown in. Figs.v 2 and 3, the flap-11 will be first folded upon'the flap 12 with its opening 27 registering with the opening 26 and the lower flap will then be. folded upon the flap llpwith its opening 28 registering with kthe opening 27. The letter will then be putin place and after the' side extensions 21 are folded as Shown in Fig. 3 with the prongs 25 passing through the opening 29, the upper' flap 'will 'be folded downY upon `the lower flap 14 and the prongs forced through vthe yregistering openings of the end and lower flaps and through the opening 26 of the socket piece 23. The fastening device will now be entirely covered and positioned within the envelop where it cannot vbe reached without tearing the envelop. Therefore the envelop cannot be opened without the fact being indicated by the tear. y

A very simple device has therefore'been provided ,for securely' holding the Venvelop closed and preventing it from being opened by unauthorized persons without the fact being indicated, when the proper person `obtains possession of the envelop.'

What is claimed is l An envelop comprising a body portion, end flaps, upper and lower iiaps having side extensions forming webs connecting the upper and lower flaps with the end flaps, a Socket plate fitting against the inner face of one of said end iiaps and provided with an opening, the second end flap being provided with an opening for registering with the opening in the socket plate when the second flap is folded upon the lirst mentioned flap,

ings through which said resilient prongs pass, the side extensions of the lower flap being provided with openings registering with an opening in the lower ap, said lowerl ap being folded upon said end flaps with its registering` openings registering with the openings in the socket plate, and said upper flap being folded upon'said lower flap with the prongs extending through the register- Y v HANS BOSSART. Witnesses:

GR'. MA. VELLE, CH. DEE SONGH.

`(lopies of thisvpteiit'may be obtained for ve cents each, by address'ngvthe' Commissioner of Patents,

' Washington; D. C.