US2275767A

US2275767A - Envelope

Info

Publication number: US2275767A
Application number: US224311A
Authority: US
Inventors: Kahn Milton
Original assignee: Novelart Manufacturing Co
Current assignee: Novelart Manufacturing Co
Priority date: 1938-08-11
Filing date: 1938-08-11
Publication date: 1942-03-10
Anticipated expiration: 1959-03-10

Description

March 10, 1942. M. KAHN I 2,275,767

ENVELOPE Filed Aug. 11', 1938 INVENTOR M75072 Karl Z72, BY

- ATRN iatented Mar. 10, 1942' UNlTED STATES PATENT OFFICE ENVELOPE Milton Kahn, Iiong Island City, N. Y., assignor to Novelart Mfg. (30., New York, N. Y.,'a firm App ication August 11, 1938, Serial No. 224,311

3 Claims.

This invention relates to envelopes of the type wherein sealing of the envelope is performed without requiring. moistenin'g of theadhesive substance, and its principal object is to provide ing flap is folded in the packing of the) en-- velopes. c h

A still further object is to provide an envelope, which, while embodying the aforesaid-advantages, will possess an outward appearance resembling that of the normal letter envelope.

Other objects and advantages will hereinafter appear.

In the accompanying drawing,

Fig. l'is a plan view showing the blank or integral'sheet from which the letter envelope of the invention is made.

closing flap is provided with a corresponding area carrying similar dry adhesive coating I0,

while the ends of side flaps 4 have usual glued areas ll.

In the making of theenvelope, the tab 1 is folded against the undersurface of the rear wall 3, along score-line I2 that concides with the terminal edge 6, while its'coating 9 is adhered tothe coated .area l3 of said wall, and thereafter the envelope is folded up and completed in the usual manner along score lines I4, the side flaps 4 being folded against the inner surface of front wall 2 and the rear wall 3being adhered to the gluedportions ll of said flaps, in the manner illustrated in Fig. 2. .As thus completed, the top v or terminal edge 6 of the rear wall 3' is in a greatly strengthened condition,.due to thefolding thereabout of the tab 1 against the 'under- 1 5: surface of said wall, while the area ofthe latter between said edge and its slot 8 is particularly reinforced owing to the adherence to its undersurface of the tab 1; which is thus in turn freely suspended below the slot 8 and lies between the walls 2, 3. As in a usual letter envelope, the coating) of flap 5 normally appears concealed,

Fig.2 is a rear view elevation of the envelope of this invention, as it appears when in normal state, or prior to utilization and sealing.

Fig. 3 is a transverse-sectional end elevation of the envelope shown'in' Fig. 2.

Fig. 4 is a view similar to Fig. 2, but showing the envelope as it appearswhen in completely sealed state.

Fig. 5 is a transverse-sectional end elevation of the envelope, taken on the line 5-5 of Fig. 4.

As illustrated in Fig. 1, the letter envelope is made of a single integral blank sheet I, comprising a usual addressing front wall 2, a rear wall 3, side flaps 4, a sealing flap 5, and from the terminal edge 6 of rear wall 3 projects a tab I as shown. The rear wall 3 is provided with a slot 8 which is parallel to its edge 6. Upon the area of tab I and the rear wall 3 between said tab and the slot 8 is provided a coating 9 of dry adhesive substance of a type which, whether moistened or unmoistened, will not stick or adhere to uncoated areas of paper, but will firmly stick to the same adhesive substance forming a coating of another portion of paper. Any suitable substance forming the coating 9 may be resorted to, such as a solution of para rubber in gasoline, or any other known material which will carry out a similar function. The

as is also, theentire tab with its coating 9.

.When it is desiredto utilize and seal the envelope,.-the leading portion of the sealingiiap' 5 is passed through the slot 8 to a position underneath the rear wall 3, and between said wall and the tab 1, so that its coating III is in registry with the coating 9 of the latter, as clearly illustratedin Figs. 4, 5, the former figure being presented as having paper portions torn awayfor clarifying purposes. Upon then applying pressure against the rear wall 3 and upon the flap 5 the latter adheres firmly to the tab 1,

through the action of the dry adhering coat- 'ings 9, l0, whereby an efficient sealing of the envelope is efiected. It will be noted that by virtue of the foregoing provisions of this envelope, not. only will there be no danger of its sticking to any other paper or other envelope material in the packing of the envelopes, but its adhesive coatings 9, III will be both normally concealed, to obviate exposure, disintegration of the coatings, catching of dust, dirt, or other matter, or producing other injury to the dry adhering coatings. While the letter envelope of this invention is provided withlefficient sealing means therefor, its appearance nevertheless resembles that of a regular or conventional letter envelope, which advantage is of utmost importance to this type of article.

Having thus described my invention, I claim:

1. A dry adhering envelope having the combination of a front wall, a rear'wall, a closing flap forming part of said front wall folding over said rear wall, said rear wall having a slot, said rear wall having a tab integral therewith and projecting therefrom beyond its topmost confine, said tab being folded to lie against the undersurface of said rear wall and having a dry adhering coat facing said undersurface, the undersurface of said flap having a dry adhering coat, and said flap being adapted to pass its leading portion through said slot to bring its coat into registry with the coat of said tab.

2. A dry adhering envelope having the combination of a front wall, a rear wall, aclosing flap forming part of said front wall folding over said rear wall, said rear wall having a slot, said rear wall having a tab integral therewith and projecting therefrom beyond its topmost confine, said tab being folded to lie against the undersurface of said rear wall and having a dry adhering coat facing said undersurface, said rear wall and said tab having portions of their surfaces in adherence with each other, the undersurface of said flap having a dry adhering coat,

and said flap being adapted to pass its leading portion through said slot to bring its coat into registry with the coat of said ta 3. A dry adhering envelope having the combination of a front wall, a rear-wall, a closing flap forming part of said front wall folding over said rear wall, said rear wall having a slot, said rear wall having a tab integral therewith and proiecting therefrom beyond its topmost confine, said tab being folded to lie against the undersurface of said rear wall and having a dry ad- 'hering coat facing said undersurface, said rear wall and said tab havingportions of their surfaces in adherence with each other by dry adhering coatings, the undersurface of said flap having a dry adhering coat, and said flap being adapted to pass its leading portion through said slot to bring its coatinto registry with the coat of said tab.

MILTON KAHN.