US1135786A

US1135786A - Process of making envelops.

Info

Publication number: US1135786A
Application number: US79922213A
Authority: US
Inventors: Nelson E Funk
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-11-04
Filing date: 1913-11-04
Publication date: 1915-04-13
Anticipated expiration: 1932-04-13

Description

N. E. FUNK.

PROCESS OF MAKING ENVELOPS.

APPLICATION FILED NOV. 4. 1913.

]Pa;i;ented Apr. 13, 11915.

3 SHEETS-8EEET 1.

N. FUN K. PROCESS OF MAKING ENVELOPS. APPLICATION FILED NOV. 4, 1913.

Patented Apr. 13, 1915.

3 SHEETS-SHEET 3.

aperture, through which the address upon NELSON n. rune, or ironrcnanagnnw annr.

rnoonss or rename m vnnore.

specification of Letters Patent.

Application filed November 1, 1913. Serial Ito. 799,222.

To all whom it may concern.-

Be it known that T, Nansen E. FUNK, a

citizen of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Processes of Making" Envelops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to .which it appertains to make and use the same.

My invention consists in the novel features hereinafter described, reference being had to the accompanying drawings which illustrate the manner in which my improved process is carried out, and said invention is fully disclosed in the following description and claims.

The object of my invention is to form envelops either with or without a window the inclosure may beseen, and in which case forms the address of the envelop, by a continuous process with the least possible waste of material and in a rapid and edicient manner. The various operations upon the materials employed for the manufacture of the envelops may be performed byhand or by the use of separate mechanical devices operated by hand or by the use of machinery especially designed for carrying out my improved process. A machine of this type isillustrated and described in an application for Letters Patent of the United States filed by me on or about November 4, 1913, Serial No. 799221, but as before stated, my improved process is capable of being carried out by other and different means than those therein shown. lt'is'also to be understood that the materials employed in the manufacture of the envelop, and which are advanced during the various steps of the process from one stage or operation to another, may be advanced continuously or intermittently as preferred.

In the accompanying drawings which enlarged top plan view of portions of the en velop blank strip and transparent strip illustrating the various steps of my improved process to and including the forma- Patentedetpr. f3, 1915.

tion of the complete envelop. Fig. 2' is a front view of the completed envelop. Fig. 2 is a plan view of one complete envelop as it wou1d appear if it were opened out and hid upon a flat surface. Fig. 3 is aview similar to Fig. 2 showing a slightly modified form of blank strip and illustrating the steps of my improved process carried out for the manufacture of an envelop slightly dif' fering from the envelop shown in Figs. 2,

2 and 2. Fig. 3 is a front view of the completed envelop shown in Fig. 3. Fig. 3 is a plan view of the envelop shown in Fig. 3

opened out flat. Fig. 4: is a view similar to.

Figs. 2 and 3 showing an envelop blank strip similar to that shown in Fig. 2 in the diderent stages, illustrating the steps of my improved process, the window aperture and the transparent covering'therefor being in this case omitted. Fig. 4: is a front View of the completed envelop illustrated in Fig. 4;

I will first describe my complete rocess in its preferred form for the manu acture.-' of an envelop having a window aperture and a covering of transparent material therefor,

as illustrated in Figs. 1, 2, 2, and 2 of the accompanying drawings.

The envelop itself is not of my invention, but in order that the various steps of my improved process may be more clearly understood, T will first describe the. envelop which is to be produced thereby, special reference being had to Figs. 2 and 2 The envelop comprises a rectangular front portion 10", a rectangular back portion 1.0, of

the same s ze as the front portion and integrally connected therewith, the line of.

fold being indicated at 1. The back portion '10 has connected therewith a longitudinally extending sealing flap 10, the line of fold between said flap and the part 10 being in- 'dicated at 2. The front of the envelop 15 mg provided at each end with an end sea flap. 10 integral therewith, the lines of fold bemg indicated at 3,3. The form of this envelop is such that it can be economically cut from a strip or blank having a width equal to the combined widths of'the' front, back, and sealing flap aswillhereinafter more fully appear. In its preferred form, the front of the envelop is provided with a window aperture 10. which may be of anyv desired shape and with a strip of transparas shown, and is gummed or adhesively secured thereto, the said transparent strip being slightly wider than the window aperture-10'. In the preferred form of the en velop, the transparent strip 11 is provided 'in those portions which lie upon and are secured to the end sealing flaps 10, with apertures-11 The envelop is-completed by folding the back and front portions together .at fold l,folding the end flap portions 10 on the lines 3, over upon the back 10 together with the end portions of the transparent strip, and sealing the same upon the back of the envelop, whereby the end portions of the trans arent striflp are interlocked with the en sealing aps and the said sealing flaps are sealed through the apertures 11 upon the'back 10, thus further locking the ends of the transparent strip and securing a better adhesion between the end sealing flaps and the back of the en velop. The sealing flap 10 is folded on the line 2 over upon the front of the envelop, as best shown in Fig. 2. This sealing flap is providedwith a gummed portion as indicated, and the front 10 of the envelop is provided with a locking aperture 10 in such position that the sealing flap will seal through said aperture upon the inclosure which carries the address to be viewed'through the window aperture, and hold the address carrying portion thereof against movement in the envelop, and also close to the inner surface of the frontof theenvelop, thus facilitating .the reading of the address through the transparent strip; The back of the envelop is also preferably provided with an aperture 10 for the insert on of a knife or letter opener, or other instrument to facilitate the opening of the envelop after it is sealed.

In carrying out my invention I prefer to form the body of the envelop as before stated from a continuous strip of paper or other suitable material which I term the envelop blank strip,and which is indicated at 10 Figs. 1 and 2, a roll of this paper being indicated at 10. In carrying out my process continuously, this strip 10 is provided with the window apertures 10, .at suitable intervals so that they sition with respect to the individual envelops when severed, and the envelop blank strip is also provided with a band of gum indicated at 4 which extends longitudinally of the blank adjacent to and between the 'window' apertures and being of a width %ghtly greater than said apertures. I may H st form the apertures and then coat the strip with the band 4: of gum, or I may apply the gum by means of a suitable reciprooccupy the proper poeating or rotary die rbll, or by hand, learing ungummed portions substantially corresponding to the size of the window apertures and thereafter cut out the ungummcd portions.

The window apertures may be cut out by hand operated dies or otherwise, as preferred, and the envelop blank strip may be moved forward during the formation of the envelop either continuously or intermittently. I also provide the envelop blank strip with gum at those portions indicated at 5 in Figs. 1 and 2 which are to form the sealing flaps. I prefer to apply the gum at separated portions 5 instead of as a straight band as it facilitates cutting out the intermediate portions of the blank without fouling the cutting mechanism, which will be readily understood. The gum used for the sealing flap will be of a character usually employed for this purpose and I prefer to use a different kind of gum for the band 4, which is specially adapted to adhere to the transparent strip and secure it to the body of the envelop,

The transparent strip 11 is preferably drawn from a supply roll 11 and is fed either by hand or by" suitable mechanical means to and simultaneously applied to the gummed band 4 of the envelop blank strip so that the transparent paper is applied progressively from one end of the blank or blank strip to the other, and firmly sealed thereto over the window aperture or apertures thereof;

I prefer to provide the transparent strip .with a looped portion 11* to accommodate the line, the preferred location of which is indicated at 32 in Fig. 1, for holding the transparent strip taut before it passes to and is placed in contact with the gummed portion of the envelop blank strip.

I may in some instances completely form the envelop blank in the shape shown in Fig. 2 and apply the transparent continuous strip from one end of the same to the other and then sever the strip after it has been applied, or I may in some instances apply the continuous transparent strip to a plurality of envelop blanks of substantially the form shown'in Fig; 2 the strip continuing from one blank to another and thereafter severing the transparent strip to separate said blanks,

but I prefer in most instances to apply the strip continuously to a continuous envelop blank strip, as shown in Figs. 1 and 2, and i till till

at such portions thereof as will fall upon and be applied to the end flap portions ofthe envelop blank or envelop blank strip. The strip 11 ma be perforated at the time immediately efore its application to the envelop blank strip, or it may be previously perforated and rolled up into the roll 11 as preferred. ll prefer, however, to perforate it I immediately before it is applied to the envelop blank strip. llt is also to be understood that While ll prefer to apply gum-for the transparent strip to the envelop blank Which has more body and is less liable to curl and become distorted, I may in some instances apply the gum to the transparent strip and then apply the gummed trans parent strip to the envelop blank or envelop blank strip, this being within the scope of my invention.

The transparent strip having been applied to the envelop blank strip, thenext step of my process consists in partially blanking the envelop, which is accomplished b cutting out transverse portions of the envelop blank strip as indicated at 6 and 6 without entirely severing the strip. The cut-out portions 6 terminate at their inner extremity in a ll-shaped notchfi which with the cut-out portions 6 also ll-shaped, define the ends of adjacent end flaps of two adjoining blanks and the cut-out portions 6 "at their outer extremity increase in width as indicated at 6,

thereby defining the end portions of adjacent sealing flaps. I also provide the envelop blank strip with the perforations or

apertures

10 and 10 before referred to at the proper points. ll now apply to the transverse portions of the envelop blank strip in line with the cut-out

portions

6 and 6, and which are to form the end flaps of adjoining envelope, a coating of applied in any suitable manner, as indicated at 7 in Figs. 1 and if, and it will be noted that this gum is apphed to portions of the envelop blank strip, and portions of the transparent strip lying upon the same and throu h the apertures ll upon the portions of t e envelop blank strip beneath. The envelop blank strip is then given a preliminar or first fold, the semi-detached portion 0 the envelop blank strip forming the back and sealing flap of the envelop, ing folded on the line 1. over upon the integral portion of the strip so that the gummed face ofthe sealing flap will face downwardly and the sealing flap will extend beyond theedge of r the integral portion of the envelop blank.

strip as clearly shown in Figs. 1 and 2. .rl

- prefer to apply the gum to the sealing flap portions ofthe envelop blank strip at such time that it will be dry when fold just described is made. so that it will no longer be sticky. The individual envelope are now separated from the envelop blank strip by severing the envelop blank strip and. the

transparent strip transversely and centrally of the transversely gummed portions 7, as indicated at the'right in Figs. 1 and 2, and

the envelop is completed by folding over the either by hand or by suitable feed rollers, or other mechanical means and operated upon progressively, in the manner indicated in the drawings. In my companion application hereinbefore referred to, which shows and describes a machine for carrying out my improved proc-ess, one form of mechanism for advancing the envelop blank strip and the transparent strip intermittently is shown and described. In Fig. l of the drawings, I have indicated certain mechanical instrumentalities which can be conveniently employed if desired in carrying out my improved process.

For example,-53 represents a die roll having cutaway portions, 53 substantially correspondingto the size and shaperof the WlIldOW apertures which may be conveniently employed for applying the band of gum to the continuous envelop blank strip, leaving the nngummed portions to be subsequently cut out, as before described, and 54 represents-a gumming die roll provided at its periphery gummed portion of the sealing flap for applyingthe gum for that purpose to the ap propriate portion of the envelop blank strip. 1 have also indicated in Fig. l certain instru- ,mentalities which may be conveniently employed for advancing the envelop blank strip.

and Withdrawing it from its roll. Thus ll and 15 represent feed rollers for positively withdrawing the strip from the roll after which it is preferably allowed to form a looporslack portion 10*; I prefer to employ a tension device (for example, a device which will deflect the paper out of a straight line and as indicated at 31) for applying'a de sired degree of tension or friction to the I strip which then passes over an impression roll 36 beneath the gumming die rolls before described, after which the strip passes between the impelling rolls 80 and 81", for example, which may be employed tov advance the paper and simultaneously roll down the transparent strip and 140 and 14:1 represent other impelling rollers co-acting with corresponding lower rollers indicated 1n dot- 105v with die portions corresponding to the ted lines and engaging the partially folded strip-at different points transversely and longitudinally, each of said rollers 14:0 and 141 being provided with a notch 140 and 141 respectively so located as to bridge over the transversely gummed portions while advancing the strip and positively controlling it up to the point where it is severed. It will thus be seen that when devices of this character are employed the envelop blank strip will be impelled or advanced by devices acting upon it at different points and moving it forward against the tension device the preferred location of which is indicated at 31 the resistance of which remains constant and the stripadvancing devices are relieved fromthe drag "of the paper roll. Such devices I prefer to employ in carrying out my process by mechanical means as shown in my companion application, but as before stated,

I do not limit myself to the use of these or any other mechanical devices as the entire process may be carried out by hand or by hand supplemented by the use of simple hand tools, such as shears, or hand knife and paste brush, as will be readily understood.

In Figs. 3, 3 ,.and .3 I have shown a slight modification of my process which consists merely in transferring the sealing flap from the back of the envelop to the front portion thereof so that when it is folded, it is folded over upon the back of the envelop instead of upon the front of the envelop. The process is exactlythe same as that heretofore described with this single exception,

and the parts of the envelop blank strip, the

transparent strip, and the envelop itself have been lettered identically with the corresponding parts shown in Figs. 1 and 2, and the sealing flap is lettered 10 in order to avoid confusion,as they are otherwise identical with. the parts shown in these figures.

Figs. 4 and 4 represent the application of my improved process for the manufacture of an envelop not provided with a window .aperture or the transparent strip coverin the same, the envelop blank alone being acted upon in the manner heretofore described withreference'to Figs. v1 and 2, except that the application of a gummed band across the envelop, the perforation of window apertures, and. the application of the transparent strip are dispensed with. As shown in these figures the envelop blank strip is partially blanked by removing transversely disposed portions 6, and defining the end flaps, as indicated at 6*, 6-, and the. sealing flap as indicated at 6, all exactly as heretofore described with reference to Figs. 1 and 2. The envelop blank strip is also preferably provided witha perforation 10 to enable the pointvof a knife, letter opener,.paper cutter, or other tool to be inserted therein for facilitating the opening of the envelop. 'The transverse portions 7 in line'with the cut-out gnaweportions are gummed as before described, the back portion of the envelop 10 is folded over upon the integral portion of the envelop blank strip as before described, and the envelop blank strip is severed transversely of the gummed portions 7 after which the end flaps 10 are folded over and sealed upon -the back 10, and the sealing flap 10 is folded and creased, thus completin the envelop, which is exactly like the enve op shown in Figs. 2 and 2", except for the aperture and the transparent paper covering for same.

It will also be obvious that in making the envelop without the window aperture as shown in Figs. 4 and 4 the sealing flap may be formed either on the portion of the envelop blank strip forming the back of the envelop as shown, or upon the portion of the envelop forming the front, as shown at 10" in Fig. 3, without departing from my invention.

What I claim and desire to secure by Letters Patent is 1. The herein described process for the manufacture of envelops, having a window aperture and a covering of transparent material therefor, which consists in supporting a blank provided with a window aperture, applying adhesix'e material to a portion of said blank of less width than said blank, and including the edges of said aperture and the portions of the blank which are to form the end sealing flaps of the envelop and applying a transparent strip of less width than said blank upon the gummed por- 10a tions thereof, whereby when the end flaps of the envelop are folded and sealed, portions of the transparent strip will be interfolded' therewith.

2. The herein described process for the manufacture-of envelops having a window aperture, and a covering of transparent material therefor, which consists in forming a blank-with a window aperture in that portion which is to form the front body portion of the envelop, adhesiv'ely applying a portion of a continuous transparent strip of less width than the blank thereupon and over said window aperture, without severing said tran arentstrip, severing said transparent stri after the applied portion has been'adhesively attached to the body portion of the envelop, and folding other portions of'the blank over upon'the portion having the transparent strip secured thereto.

3. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding an envelop blank provided with a window aperture, applying gum to a narrow portion of the envelop blank extending longitudinally thereof, around the edges of the window aperture and upon portions of the blank which are to form the end flaps of the nielegree envelop, and feeding a transparent strip of less width than said blank and applying the same progressively to the gummed portions thereof longitudinally of the blank, over the window opening and upon said end flap portions, whereby when the end flaps are folded, portions of the transparent strip will be folded therewith.

4.. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a continuous envelop blank strip, form-ingaddress viewing window apertures therein at intervals, adhesively applying a continuous strip of transparent material of less width than the blank strip to the blank strip progressively, over said window apertures, and severing" said transparent strip, blanking the envelop blank strip to define. the body portions, end flaps, andsealing flap, and folding said. body portions together severing the individual envelop blanks from the blank strip, and sealing the end flaps.

5. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a plurality of contiguous envelop blanks end to end, provided each with a window aperturedisposed longitudinally with respect to the line of feed, applying gum to narrow portions of the envelop blanks successively adjacent to the edges of the window apertures and upon portions between the apertures of adjacent envelop blanks which are to form the end sealing flaps of the envelops, applying a continuous transparent strip of less transverse width than the envelop blank to the gummed portions of said envelop blanks whereby when the end flaps of the envelop are folded, portions of the transparent strip will be interfolded therewith, and severing said transparent strip.between adjacent envelop blanks.

6. The herein described process for the manufacture of envelops, having a window aperture, and a covering of transparent material therefor, which consists in supporting a blank provided with a window aperture, applying adhesive material to. a portion of said blank of less width than said blank, and including the edges of said aperture and the portions of the blank which are to form the end sealing flaps of the envelop, and applyin a. transparent strip of less width than said blank upon gummed portions thereof,

and subsequently applying gum to the portions ofsaid transparent strip lying upon the end flap forming portions of the envelop blank. I

7. The herein described process for the manufacture of envelops, having a window aperture, and a covering of transparent ma terial therefor, which consists in supporting plying a transparent strip of less width.

than said blank upon gummed portions thereof, and subsequently sealing the end flap forming portions and the portions of the transparent strip adhering thereto, upon other portions of the envelop blank.

8. The herein described process for the manufacture of envelops, having a window aperture, and a covering of transparent Inaterial therefor, which consists in supporting a blank provided with a window aperture, ap-

plying adhesive material to a portion of said blank of less width than said blank, and including the edges of said aperture and the portions of the blank which are to form the end sealing flaps of the envelop, and applying a transparent strip of less width than said blank upon gummed portions thereof, and subsequently applying gum in lines eX- tending transversely of the blank, upon said end flap forming portions and upon the portions of the transparent strip lying upon said end flap forming portions.

9. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a plurality of contiguous envelop blanks end to end, provided each with a window aperture disposed longitudinally with respect to the line of feed, applying gum to narrow portions of the envelop blanks successively adjacent to the edges of the Window apertures, and upon portions between the apertures of adjacent envelop blanks, which are to form the end sealing flaps of the envelops, applying a continuous transparent strip of less transverse width than the envelop blank to the gummed portions of said envelop blanks, applying adhesive material to the portions of said transparent strip adhering to the said end flap forming portions, and severing said transparent strip between adjacent envelop blanks, whereby when the end flaps of the envelop blanks are folded, portions of the transparent strip will be interfolded therewith, and sealed upon other portions of the envelop.

l0. lhe herein described process for the manufacture of envelope having a window aperture and a covering of transparent material therefor, which consists in feeding a plurality of contiguous envelop blanks end to end, provided each with a window aperture disposed longitudinally with respect to the line of feed, applying gum to narrow portions of the envelop blanks successively adjacent to the edges of the window apertures, and upon portions between the apertures of adjacent envelop blanks, which are to form the end sealing flaps of the envelops applying a continuous transparent strip of less transverse width than the envelop blank to the gummed portions of said envelop blanks, and severing said transparent strip between adjacent envelop blanks, and sealing the end flap forming portions of the envelop and 'the adhering portions of the transparent strip over upon the other portions of the envelop blank.

11. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent inaterial therefor, which consists in feeding a plurality of contiguous envelop blanks end to end, provided each with a window aperture disposed longitudinally with respect to the ,line of feed, applying gum to narrow portions, of the envelop. blanks successively adjacent to the edgesof the window apertures and upon portions between the apertures of adjacent envelop blanks, which are to form the end sealing flaps of the envelops,

applying a continuous transparent strip of less transverse width than the envelop blank to the gunimed portions of said envelop blanks, applying adhesive material in lines extending transversely of the envelop blank upon the end flap forming portions, and the portions of the transparent strip adhering thereto, and severing said transparent strip between adjacent blanks, whereby when the end flap forming portions are folded and 85 sealed, portions of the transparent strip will be interfolded therewith and sealed upon other portions of the envelop blank.

12. The herein described process for the manufacture of envelops having a trans- 4 parent window portion in one wall, which consists in feeding a continuous envelop blank strip, providing said strip with transparent window portions at intervals therein, cutting out'transverse portions of the envelop blank strip in line with portions between adjacent window portions, to form semi-detached portions at one side of the blank strip of a size sufficient for one complete wall of the envelop, and defining end flap portions of adjacent envelop blanks, without severing the strip, folding said semidetached portions over upon the integral 7 portions of the envelop blank strip, severing the individual envelop blanks centrally through said defined end fiap portions, and

' sealing the end flap portions at each end of the envelop over upon said semi-detached portions.

13. The herein described process for the manufacture of envelops having a trans- .parent window portion in one wall, which consists in feeding a continuous envelop blank strip, providing said strip with transparentv window portions at intervals therein,

3 cutting out transverse portions of the envelop blank strip in line with portions between adjacent window portions to form semi-detached portions at one side of the blank strip of a size sufiicient for one com plete .wall of the envelop, and defining end flap portions of adjacent envelop blanks, without severing the strip, folding said semi-detached portions over upon the integral portions of the envelop blank strip, guinlning the defined end flap portions, J1) severing the envelop blank strip centrally of said defined end flap portions, and sealing said gummed end flap portions at each end of the envelop over upon the semi-detached ortions.

14. T e herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a continuous envelop blank strip provided at 8 intervals with window apertures, applying gum to said envelop blank strip around the edges of said apertures, applying a transparent fabric of less width than the envelop blank strip to said gumnied portions, to cover the window apertures, partially blanking the strip by cutting out transverse ortions and forming semi-detached portions between said out out portions at one side of the envelop blank strip, and defining the end flap portions of adjacent envelop blanks, without severing said blank strip, folding the semi-detached portions over upon the integral portions of the envelop blank strip, severing the envelop blank strip substantially centrally through the defined adjacent end portions, and folding and sealing the end flap portions at each end of the envelop blanks over upon the said semi-detached portions.

15. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a continuous envelop blank strip provi ed with window apertures, applying a transparent strip of less width than the envelopblank strip over said apertures, partially blanking the envelop blank strip withoutsevering it, gurnming certain portions of the artially blanked strip, folding the partially lanked strip, severing the blank strip into individual envelop blanks, and folding and sealing portions of the same to complete the envelop. V 120 16. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding an envelop blank strip provided with window apertures, applying gum to said blank strip around and between said apertures, applying a transparent strip of less width than the envelop blank strip to the gummed por- 1 tions of the blank strip, cutting away poriaearee W tions-of the blank strip to define individual envelop blanks, and folding, severing and sealing the individual envelop blanks.

17. The herein described process for the manufacture of envelops having a window aperture and a coveringof transparent material therefor, which consists in feeding a continuous envelop blank strip, forming window apertures therein at intervals extending longitudinally of the strip and located nearer one side of thestrip thanthe other, applying um to a narrow portion of theenvelop blan strip around and between the window apertures therein, applying a strip of transparent material narrower than the envelop blank strip to the gummed portions thereof, cutting out portions of the envelop blank strip to partially blank the same without severing it, folding portions of the partially blanked strip upon other portions thereof without severing said strip, applying gum to portions of the partially blanked strip, severing said partially blanked strip into individual envelop blanks, and folding and sealing the last mentioned gurnmed portions.

18. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in providing a continuous envelop blank strip with window apertures at intervals, adhesively, applying a continuous transparent strip to the envelop blank strip progressively over the window apertures thereof, partially sever a continuousenvelop blank strip with window apertures at intervals, adhesively applying a continuous transparent strip to said blank strip over the successive apertures therein, removing transversely, disposed portions ofthe said blank strip without severing the strip to form semi-detached portions between[ successive portions removed,

gurnming transverse portions of said blank strlp and'the portions of the transparent strip adhering thereto, folding the semidetached portions of the blank strip over upon the integral ortion of the blank strip,

tit

severing the enve op blank strip and transparent str1p through I the transversely gummed portions ofeach severed enveldp blank over upon the body of the envelop.

20. The herein described process for the h manufacture of envelop having a window aperture and a covering of transparent material therefor, which oonsistsin providing a continuous envelop blank stri with window apertures at intervals, ad esively applying a continuous transparent strip to the said envelop blank strip over the sald'apertures thereof, cutting out transversely disposed portions of the strip to form semidetaohed portions between. the cutout portions and to define the end flap portions and sealing flap portion of the envelop blank without severing said blank strip, applying gum to transversely disposed portions of the envelop blank strip and adhering portions of the trans arent strip, in line with said cut-out portions, foldin the said semi-detached portions of sai blank stri over upon the integralportions of the blan strip, severing both of said strips through the said transversely gummed portions, foldin the transversely gummed end portions" of the severed envelop blanks upon the body of the envelop, and finally folding the sealing flap over upon the envelop body.

21. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in prov1d ing a continuous envelop blank strip with Window apertures at intervals, adhesively applying a continuoustransparent strip to the envelop blank strip over said window apertures, providing said transparent strip with apertures in the portions thereof which lie upon the end flap portions of the envelop blank strip, cutting out transverse portions of the envelop blank strip to form semr-detached portions between said cut-outportions removed without severing said strip, applying adhesive to the transverse portlons-of the envelop blank strip and the perforated portions of the transparent strip lying thereon, folding the semi-detached portions of the envelop blank strip between said cut-out portion over upon the integral portions of the envelop blank strip, severing the envelop blank strip through said transversely gummed portions, and folding the transversely gumined end flap portions over upon .the body of the envelop.

22. The herein described process for the manufacture of envelops which consists in cutting out transversely di osed portions of a continuous envelop blan strip withoutey" completely severing said strip, to define the body portions, and the end flaps and sealing flap gumming transversely integral portions of the strip in line with the cutout portions,

folding the semi-detached portions of said strip between successive out out portions 15 over upon the integrallportions before com V as r 1,135,786

, pletely severing said strip, severing transversely the integral transversely gummed portions of said strip between said folded semi-detached portions which transversely gummed portions form the end flaps of the envelop, and sealing the end flaps upon the body portions of the envelop.

23. The herein described process for the ''manufacture of envelops which consists in fore severing the strip, severing the strip transversely substantially centrally of the transversely guinmed portions, and folding I the gummed end flaps over upon one of the body portions of the envelop.

24. The herein described process for the manufacture of envelops, which consists in v cutting out transverse portions of a continu 1 ous envelop blank strip at intervals Without severing said strip to form semidetached portions of greater .Width than the remaining portion of the blank, folding said semidetached portions over upon the main blank so that the outer portions thereof will project beyond the edge of the integral portions and form the sealing flap of the envelop,

severing the envelop blank strip through the transverse portions in line with said cutout portions, folding and sealing the end flap portions so formed over upon the body of the envelop, and folding the sealing flap portion over'uponthe body of the envelop.

25; The herei11-described process for the manufacture of envelops, which consistsin cutting out transverse portions of a continuous blank strip at intervals, severing said strip to form semi-detached portions of greater width than the integral portions of the strip, applying gum to transverse portions of the strip in line with said cut-out portions, folding said semi-detached portions over upon the integral portions of the strip so that the outer end portions thereof will project beyond the edge of the integral portion of the strip to form the sealing flap, severing the said strip centrally through the transverse gummed portions, folding and sealing the transverse gummed portions at each end of the severed envelop blank over upon the body of the'envelop, and folding said sealing flap longitudinally of the envelop upon the body of the same.

26. The herein described process for the manufacture of envelops having a window aperture and a covering of transparent material therefor, which consists in feeding a continuous envelop blank strip, forming address viewing window portions therein at intervals, adhesively applyin a piec of transparent material of less width than the said blank strip, upon the same and over a window aperture therein, blanking the blank strip to define the envelop body portions, end flaps, and sealing flap severing the individual envelop blanks from the blank strip, and sealing the end flaps upon one of the body portions of the envelop. 27. The herein described process of making envelops provided with window apertures, and a covering of transparent material therefor, which consists in feeding a continuous blank strip provided with window apertures, adhesively applying a continuous strip of transparent material of less width than the said blank strip to the same over the window apertures, and subsequently blanking the envelop blank strip, to define the body portions, end flaps, and sealing flap of an envelop, one of the body portions of the envelop blank containing said window aperture.

In testimony whereof I aflix my signature, in the presence of two witnesses.

NELSON n. FUNK.

' Witnesses:

W. H. Yarns, BERTHA B. ArrEL.