US2001434A - Safety closure for letters - Google Patents

Description

May 14, 1935.

A. scHLzE SAFETY CLOSURE FOR LETTERS Filedqune so, 1932 IGH awwzfmzm By XM.

fof/vir Patented May 14, 1935 i. y

.UNl'rso s'larss Farrar orties y SAFETY CLOSURE FOR LETTERS y Albert Schulze, N eustadt-on-the-'llafelcht Czechoslovakia Application June 30, 1932, Serial No. 620,139 In Czechoslovakia February 22, 1932 2 Claims.k (Cl. 229-68) The present invention relates to safety closures such manner that one folded edge B1 is located for letters. at the opening side. The letter is then closed ln The principal object of the invention is to prothe ordinary way and thev sealing vmember P is vide means for the safe closing of letters by which passedthrough the envelope and the letter' at the letters of any kind can be closed with absolute lower edge a., or laterally opposite to the laterally 5 certainty in every respect in such manner that a located folded edge B2 as shown at Pi, or in the letter cannot be opened without damage occurcorner formed by the said two edges a, d. The ring, whilst any damage which may arise is irclosure nap c is preferably so shaped (see Fig. 4), reparable and the effect of such damage on the c", that it can likewise be gripped by the sealing letter is perceivable at the first glance. member P. By constructing the envelope of suit- 10 A further object of the invention is to provide able shape it is, however, also possible to grip sealing means, by the use of which the parts of all the four iiaps of the envelope and all the sheets the letter or letter card are closed or fastened to of the letter by means of the sealing member (see one another and their envelope or covering at Figs. 7 and 8). Bi and B2 denote as before the folded-over corners or sides either individually folded edges of the letter, a, b, c,-ol are the edges 15 or in groups. of the envelope and a', b', c., d are the corre- Some preferred methods of carrying the insponding flaps of the envelope. vention into practice are illustrated by way of In the constructional form shown in Fig. 7 the example in the accompanying drawing in which: sealing is eiected at the corner and in the con- Fig. 1 shows an unfolded sheet of letter paper structional form shown in Fig. 8 at the side op- 20 constituting a so-called letter card adapted for posite to the opening of the envelope. The cloemployment without an envelope, sure grips all the parts of the envelope and of the Fig. 2 shows the aforesaid letter card after it letter when the letter is located so that one folded has been folded, edge B1 is located at the opening side c and the Fig. 3 shows the letter card after it has been laterally adjacent folded edge B2 is located op- 25 closed by adhesive and sealed, posite to the place where the sealing member is Fig. 4 shows a letter arranged in an ordinary applied. commercial envelope, For letters containing valuable enclosures a Fig. 5 iS a ClOSS Section of Fig. 4 taken on the special protective member El is provided which line V-V, consists of a sheath comprising an upper and a 30 Fig. 6 iS a lOIlgiilidiIlnl SeCiiOll 0f Fig. 4 taken lower wall and having adhesive reinforcingstrips on the line VI-V. on the sides through which the sealing member is Fig. 7 shows the arrangement of a letter within to pass, the said strips being adapted to prevent an envelope of a particular fOlm adapted t0 e11- the sealing member from damaging the valuable able the sealing means to be applied at one corner, enclosures, and being preferably formed by stick- 35 Fig. 8 ShOWS an arrangement of a letter in an ing the upper and lower walls of the sheath toenvelope which is particularly adapted for the gether over a short width at the sides and bottom. application of sealing means on one side, The letters may be sealed by means of sealing Fig. 9 shows an arrangement 0f a letter 00nmembers at one or more sides, the strips at the 4o taining valuable enclosures Within e protecting sides oftheslieath being gripped by means ofthe 40 sheath, and sealing members. The sealing can, however, also Fig. 10 Shows e Seetlen 0f the Sheath teken 011 be enacted at all sides by the use or a further sealhne X-X of Flg 9 ing member P applied at the opening side, if in eiilegr taiideiliiirtlegd in Figs. 1 3 is prodoing .this damage to the Valuable enckisure 10- vided over the half of two adjacent edges b and c cated m the protective Sheath Campe molded' with adhesive naps K1 and K2, is twice folded, The envelopes accorqmg to lgs' 7 3 and 9 stuck down by means of the adhesive flaps and may als@ be employed Wlthout bemg gummed to' finally stuck down at one edge by means of a gether mil/Smm@ as by the employment 0f a' Seal- Closure Strip s, the two, ends of which are sealed lng member 1t 1s rendered quite impossible to open 50 by means of a Sealing member P e. an eyelet9 the letter without destroying the envelope or the rivet, or the like which passes right through. y Settling member respectively.

Fig, 4 illustrates the application of the inven- When envelopes which are not summed down tion to commercial letters. The singly or douare employed it is only necessary to fold o-ver the bly folded letter is inserted in the envelope in flaps in the correct order of succession. The lat- 5 eral flaps are first folded over, then the lower flap and iinally the upper ap.

Letters closed in the above described manner according to the invention can only be opened after removal of the sealing members, Which latter may be provided With embossed matter, initials, crests, trade marks or the like. The letter may be opened by removing or cutting off the sealing members. i

The advantages of the safety closure for vletters according to the invention will be obvious. The secrecy of the letter and any business matter contained therein is ensured as is also the safety of the contents of letters containing valuable enclosures and registered letters, so that in the latter cases the enclosures may be of greater value than hitherto. Moreover, in the closing of ordinary letters greater cleanliness, simplicity and saving of time during the closing operation are obtained.

I claim:

l. A safety closure for letters, more particularly letters containing valuable enclosures,'comprising in combination: an envelope having a plurality of end and side iiaps; a separate protecting sheath for the reception of the letter, said sheath beingv removably arranged Within said envelope; reinforcing strips at the sides and'bottom of said sheath; and sealing means passing through all the iiaps of said envelope and through said reinforcing strips, whereby said sheath and said envelope are fastened together.

2. A safety closure for letters, more particularly letters containing valuable enclosures, comprising in combination: an envelope having a plurality of end and side flaps; a separate protecting sheath for the reception of the letter, said sheath having a front wall and a back wall and being removably arranged within said envelope; reinforcing strips at the sides and bottom of said sheath formed by sticking the upper and lower Walls of thel sheath together over a short width at the sides and bottom; and sealing means passing through all the flaps of said envelope and through said reinforcing strips, Whereby said sheath and said envelope are fastened together.

" l ALBERT sCHLzE.

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