US997999A - Envelop. - Google Patents

Description

- Z/zfn. 1. 33691 G. J. HARTKE.

ENVELOP. APPLICATION FILED MAY 31, 1911.

7 997,999; Pateqted July 18,1911.

. STA ES IATENT OFFICE.

GEORGE J. HARTKE. or CHICAGO, ILLINOIS.

'ENVELOP.

specification of Letters Patent. Patented July 18,1911.

j Application filed May 31, 1911. Serial naesaaoo.

To d ll whom it may concern: 1 Be it. known that I, GEORGE J. HARTKE, a citizen of the United States, residing at Chicago, in the county of Cook and State.

Letters Patent'No. 532,206 granted Jann 5 arydth; 1895, to A. D. Klaber which is known to the trade by the name Neostyle.

The Ueostyle envelop as shown in'the patentand as heretofore made is open to several object-ions. One of these is that duris heldiiir place 'only'by, reason of the fact tha'h'it projectsv a short distance beneath, or,

to state it .difierently,'i'sf partly overlapped by the adjacent side of the bottom flapbut otherwise it; is not: engaged by'any part of t-beemnelop-that' would have a tendency to hold it-in Yplace. Being loose and disenbodying the inventionis made. Fig; 2 is'a gagdiexcept as aforesaid, when the envelop is beingfilled, it is sometimes 'forced'upward and outward and .freed from engagement withfthejbottorn flap This is apt'to happen frequenilynnl'ess'the operator is'experienceda Another; objection .to the N eostyleienvelop as heretofore made-is thateven afier i'sfilled. and isealed,.l the loose flap is sometimes freed 'from its engagement out.

with theltop andibottom flaps and forced This mayhappen whenxp'ressure is suddenly exerted upon thesealed envelop, especially when" severai of them are piled up, one: upon another, immediately after being sealed. When firstsealeil a: considerable volume of air is impri'sdned in Qthe envelop and the sudden expulsion ofth'i's air ineident to compressing the .pile of envelops, blows the loose flap out. Again the loose flap is sometimes forced out asthe'mail being distributed or otherwise handled.

This willh'appen if the envelop with: its in closure is so handled that the inclosure is thrown against the loose flap, especially if the iiiclosure is heavy. It has been proposed to overcome these objects byproviding the looseSi'de flap with a tongue 'inlt he form of a hook, and soun itingthe fixed side flap and the-bottom fiap as to form a pocket which is occupiediby the hook and the. stop; for" engaging the hook and preventing (it "from' "being ccidentally withdrawn -'fio thepockettf n f'the-manufacture of p 2 ed out. ing the; filling; operation the loose side flap 5 3 proved Neo'style envelop, the precise 1 provide an envelop which has-all the: ad-

vantages of the Neostyle modified as'above befree from'the objections {last above point-- To, this end the 1 inventionctmsists in. the

features of novelty that are hereinafter'described, v In the accompanying drawing-whichr-is made a part of this'specifioation, Figure 1 is i a, diagrammatic representation of a. partly folded blank from which an envelop emsimilar View 1026-11119 envelop completed and I in readinesstobe loaded and sealed.

Arepr'esents the front of the envelop; B i the'topor sealing flap,"-C thebotto n' flap, D

; theloos'e side flap, and E theremainingside fiap,-'the flaps C and E being lfixedly secured together as hereinaften described.

, Both figures of the drawingzsh w the side flaps folded to the positions which they oceupy. in the completed envelop, Fig. 1'. shows the top and bottom "flaps'astheyappear in the blank, 1 the positions; which they "occupy in the completed- 1envelomafter-the blank is i folded on the dotted-linesjajand a: being in- 5 dicated by the dotted: 'liiiesb-fand 0, respecs tively-f i the extent of a portion which. overlaps it.

in anyway.

of the loose side fiap but they are-not united" *A.portion'ofthebottomflapC also overlaps and lies upon 1 theioutsi'deof a por ti'on of the side flap andv l'ihiitedareas'i V offthe ,surfa'ces of their overlapping portions are fiire'dly united 5 or.- secured together f described and'which, at-th'e same time shall-- the front, and also upon theside flap Rte Thebottorn flapC-is thenfoldeddoWn upon]: the front-A and also-upon both of the side flaps. A portion of the bottomflapwoverlaps and lies upon the-'outside'of a: portion 'siiit'able adhesive s'ubstanoeas shown-by, "shade linesF,"-thus-leaving otherlii'nited surfaces of the overlapping portions of the several flaps when the envelop is complete and sealed or ready to be sealed, which may be done by the line of gum I), on flap B.

It will be observed that the gum F unites only limited portions of the overlapping portions of the bottom flap C and the side fla-p E. It extends continuously and uninterruptedly completely past and around the end of the .tongue d, thence over it and .thence downward, terminating in a portion j, which forms a stop adapted to engage the upwardly projecting hook d formed on the tongue (Z. This stop extends downward bev low the top of the hook at and prevents its I of withdrawing the loose flap, the natural tendency of the pressure of the thumb theredirect movement toward the side of the envelop. which carries the loose flap. The ununited portion of the overlapping portions of the flaps C and E form the pocket f, which is of ample size to accommodate the tongue and hook and in addition provides a clearance below the tongue which will perunit it to mnovedownward and enable the hook to clear the stop when the loose flap is purposely withdrawn. This latter is an portant desideratum,-because in the action on, is to move it downward and this downward movement enables the tongue to be withdrawn from the pocket without bringingthe hook in contact with the stop f, whereby the liability of tearing the hook is avoided. On the other hand, when the envelop is being loaded, and its front and back necessarily spread apart, the tendency will be for the loose flap .to move upward and'escape from beneath the overlapping edge of the bottom flap, but this upward movement relatively to the bottom flap is absolutely prevented by the engagement of the tongue with the stop. In the form originally contemplated, the pocket was the result of a complete interruption in the line of gum and the hooked tongue projected through this interruption. It was found however that, in applying the gum, there was a tendency to spread outward from the edges of the glimmer and when applied would have an irregular or ragged outline, whereas in order to avoid its coming in contact with any part of the loose flap and at the same time bring it to the necessary close proximity to the hook, it must be applied with considerable nicety. This is one of the reasons for making the line of gum continuous in the vicinity of the hooked tongue but. in addition to this advantage in the manufacture, the continuity of a line of gum makes the completed envelop stronger.

\Vhat I claim as new and desire to secure by Letters Patent is:

As a new article of manufacture, an envelop having a front, and bottom flap and a fixed side flap, said bottom and side flaps having overlappingportions, a loose side flap opposite the fixed side flap, having a tongue provided with a hook presented up? ward and lying between said fixed side flap and the bottom flap, and a line of gum uniting limited surface areas of said overlapping portions of the bottom flap and fixed side flap and leaving limited surface areas of said overlapping portions ununited, thereby forming a pocket which is occupied by said hooked tongue and leaves clearance below it, the line of gum extending continuously around the end and over the top of the hooked tongue and thence downward forming a stop for engaging the hook of the tongue and preventing its upward or outward movement.

GEORGE J. HARTKE.

l/Vitnesses:

A. ARENSON, L. M. HOPKINS.

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