US1459415A - Process of automatically manufacturing envelopes - Google Patents

Description

June 19, 1923. v I 59m5 F. J. PARKS PROCESS OF AUTOMATICALLY MANUFACTURING ENVELOPES I o i inal Filed Ap'fil ll, 1917 covering accompanying drawing, w herein Patented June 1923.

UNETED erase.

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FREDERICK JAMES PARKS, OF NEW YORK, N. Y.

PROCESS OE AUTOMIATICALLY MANUFACTURING I ENVELOPES.

Original application filed April 11, 1917, Serial No. 161,166. Patent No. 1,316,737, dated September 23,

1919. Divided and this applicationfiled August 23,

To all whom it may 00mm.-

Be it knownthat I, FREDERICK JAMns PARKS, a citizen of the United States, and a resident of the city and State of New York,

have invented certain new and useful Improvements in Processes of Automatically Manufacturing Envelopes, of which the following is a specification.

This is a division of,my patent applica tion, Serial No.v 161,166, filed April 11, 1917, an improved machine for making envelopes.

The'invention relates particularly to the manufacture of envelopes-wherein a pocketis provided upon the envelope body. for the reception of part of-a closing flap, in such a manner that the same may readily'be withdrawnto permit inspection of the enclosure by the postal authorities, and thereafter reinserted for transmission through the mails. The object of the invention is to provide a novel and improved-method or process of producing envelopes of this type, capable of employment for their production in' such. a

way as to afford important advantages. and economies that will insure their practical or commercial manufacture. v I Y Briefly outlined, the said method or process consists first in producing in the blank of which the envelope is formed, a series oftransversely directed folds whereby correspondingly arranged closure members for the envelope are produced at the opposite ends or edges, and subsequently folding orsealing the sides of the blank to produce the lateral closures for the envelope.

The novel features of the invention will be carefully defined in'the claims. 7

In order that my improvements may be the better understood, I will now proceed to describe the invention with reference to the Figure 1, is a development of the. preferred form of blank utilized for making the envelope, the same being shown in perspective; I v

Figure 2, is a perspective-view; of the blank doubled upon itself in a longitudinal direction, as it appears after the first transverse fold has been made therein; 7

Figure 3, is a similar view of the blank folded at the ends thereof,

- Figure fl, is a like view, showilig en addimaking the envelope -0 1918. Serial N0. 251,174.

' tional fold taken transversely of the doubled ends of the blank;

Figure 5, shows the blank spe'ctlve, with the latter-named fold open to receive some adhesive substance, which is likewise in perapplied to the inner face thereof, as also to Preferably and as shown, the first step in envelope is to fold this blank transversely at or near the middle of the length, as indicated at 6, whereby the front.

and back plies 0v and (Z are formed, together produced is designated as withthe closure at the end or edge of .the

blank isgiven a plurality of parallel and closely related folds e and f, so that it becomes transversely folded at and adjacent to the mouth of the envelope. These folds producea two-ply pocket with the rear ply d been reinserted to prevent loss of such en pposite to its mouth. Next, the

g, integrally joined along the envelope. mouth, and a two-ply closure flap or member h. The latter is preferably V-shaped as and after having I closure in the mails, can again be retracted readily, so that the required examination of the contents may bemade during transit. The duplex or-twoply formation of the closure flap or memben h, facilitates its insertion in the pocket 9, and also assures-its retention therein. by reason of the increased stilfness'an'd thickness thusimparted-to it.

The formation of the blank is such thatone of its extremities 2', constituting a terminal reduced part of the'flap h in the completed envelope, protrudes from the pocket 9 thereof so as to afford a finger hold, enabling this terminal part to be readily seized by thefingers when the flap is to 'be with-' drawn fromthe pocket.

As shown, also, the blank is provided with p be folded over "of the pocket '9, I underlying portion of the back ply d, to hold b is taken on integral side flaps orextensions j, 7', parallel with each other along the opposite lateral edges .or sides. These later-al'fiapsor extensions are adapted, after the formation of the flap-receiving pocket as above set forth, to longitudinally of the blank and to be sealed down along the opposite sides of the envelope to close the same.

Simultaneously, the adjoining extremities are sealed down upon the front ply 0 will project beyond the adjacent extremities of the back ply (1.- Figures 1 and a 2. This provides one end closure for the both the plies 0 and d of the blank so that envelope atjb, and at the same time leaves the superposed'extremities of the front and.

back plies of sufficient length, respectively,

'to produce the before mentioned two-ply pocket g,

and two-ply closure flap h, together with the pull-out portion i.

The second transverse or pocket forming fold e is produced in the end portions of the terminal of each is folded over upon the 'backof the envelope, as represented in Figure 3.

The terminal portion of the ply d, thus folded over, forms the inner thickness of the two-ply pocket 9, whilst the terminal portion of theply 0, simultaneously folded over, forms part of It will-be observed that the fold e alone affords a pocket though of single thickness,

I at the free end ofthe back ply cl, and that such a pocket would be capable of retaining the portion 5 of the front ply 0, if this .portion of the blank were tucked into it, and the ends of the pocket sealed. But, the

' present invention contemplates the employment of the parallel folding 7 in addition.

By taking the third transverse fold f,

across the doubled ends of the blank, the

terminal portion of the T ply. 05 is again turned upon itself to complete the two-ply pocket g, and the superjacent terminal of the ply a engaged therewith automatically becomes inserted in this pocket, where it constitutes the two-ply closure flap or member h, the extremity i of which protrudes outwardly to afford a finger hold ashereinbefore set forth. See Figure 4:.

of the folded terminal portion 'of or method of manlified in the aforesaid patent applicationthem each in its proper the closure member or flap 'the opposite'ends of the envelopes.

It will be noted that the second and third the projecting extremity i of the front ply c I is folded back upon the rear ply d exteriorly the latter. During the third transverse folding operation, at 7, the blank is again folded from the same, side transversely across the overturned or doubled part ofthe front ply a, so that the reduced end of the blank is partly'covered by the formation of the pocket 9, and becomes .the inserted closure flap only. the short pull-out portion i thereof protruding from -the., pocket.

The three transverse folds b, 6, ing been produced in above the manner hereindescribed, the side flaps j, y of the h, with v and fhavblank are folded over and sealed down upon I the lateral parts of the rear ply (Z to close the sidesof the envelope, and-the ends of the pocket g, are likewise secured to maintain place.

As a preliminary to this operation, the blank may be scored or creased lengthwise, as at k, is, Figure 1, along the junctures of the side flaps 'j, j, with the front ply 0, soas to facilitate the folding over of the said side flaps, whether manually or through some mechanical appliance.

V Any desirable adhesive substance, such as gum or the like, may be used for sealing the flaps j, and the ends of the pocket g, upon the opposite sides of the ply d. Preferably, the gum is appliedas at m, a, Figure 5, to the flaps themselves and'to the adjacent extremities of the folded blank portion whereto the herein described invention, the blanks are first given'a plurality of transverse folds, whereby absolute closures are produced for One of such closures is of a permanent character, afi'orded by the'central fold b, which closes the bottom of the envelope, as best seen in Figures 6 and 7 The oppositely arranged closure is not permanent, but porary or separable character, being formed by the plural folds e and f, whereby the and the flap or member 71. 1nter-. locked therewith are simultaneously produced, by foldin both plies of the blank conjointly. lltwi 1 be apparent, in this connection, that both of the-folds e and f need not be produced in the two-plies c and d, of

the envelope, inasmuchas when a two-ply is of a tempocket is not desired, the fold e may be produced only in the front ply c, of the folded blank, parallel with and adjacent to the terminal edge of the rear ply d, the latter being shortened for the purpose, for instance by severin the section marked w, in Figures 1 and 2, ai er which, upon roductioii of the fold f, both plies c and (i Wlll be folded, producing a singl ply pocket as previously mentioned and a scored or creased closure flap engaging the same. The transverse scoring or creasing of the closure flap being effected simultaneously with the formation of the'pocket insures perfect. conformity between these parts without-the necessity of su-bjectin the envelope to further operations, which is a distinct advantage, since the independent scoring of the said flap with the pocket would be difiicultto perform otherwise.

Having thus described In invention, what I claim and desire to secure y Letters Patent 1s: g

1. In .a process of automatically manufacturing envelo es, the steps which consist,

in conjointly f0 ding the superposed'ends of 'a doubled blank transversely at points adjacent to each other to form a separable closure member in interlocked relation with a retaining pocket; closing the lateral edges of the blank and fastening saidpocket.

. '2. In a process of automatically manufacturing envelopes, the-steps which consist, in twice eonjointly folding a two-ply blank, one of whose plies has an end closure flap,

transversely at points adjacent toeach other,

whereby the closure flap is first folded over one of the plies of the blank and then a re-' 3. In a process of automatically'manm facturing envelopes, the steps which "consist, I

in twice conjointly folding a two-ply blank,

one of whose plies has an end closure flap, transversely at points adjacent to each other, the lateral edges of the respective plies being 'out of registry, said flap being first folded over one' of the plies of the blank and then a. retaining pocket produced with which said flap is interlocked; and then folding over and sealing. the respective lateral overlap-v ping blank edges upon the adjacent ply and the adjacent ends of said pocket.

4. In a processof automatically manufactwice conjoint y folding a two-ply blank, one of whose plies has a narrowed terminal portion provided with an end'closure flap extended beyond the adjacent end of the other pl transversely at points adjacent to each ot er, whereby said terminal portion is first folded over one of the plies of the blank and then a retaining ocket produced'with which said flap is detac ably interlocked and from which it extendsyclosing the lateral edges of the blank and fastening said pocket.

In testimony whereof I have hereunto set my hand and seal.

rmznnmcx, JAMES ranks; a 5.]

.turing envelo es, the steps which consist, in

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