US885573A - Safety-envelop. - Google Patents

Safety-envelop. Download PDF

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Publication number
US885573A
US885573A US31727906A US1906317279A US885573A US 885573 A US885573 A US 885573A US 31727906 A US31727906 A US 31727906A US 1906317279 A US1906317279 A US 1906317279A US 885573 A US885573 A US 885573A
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United States
Prior art keywords
envelop
safety
flap
edge
panel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US31727906A
Inventor
Catherine C Blake
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Individual
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Priority to US31727906A priority Critical patent/US885573A/en
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Publication of US885573A publication Critical patent/US885573A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00—Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/30—Closures with special means for indicating unauthorised opening

Definitions

  • My invention relates to improvements in safety envelops, its object being to produce an envelop which, after being sealed, cannot be reopened without destroying or so defacing it that the fact of its having been opened will be apparent.
  • the danger of opening envelops for the purpose of surreptitiously reading letters or wrongfully removing remittances will be greatly reduced.
  • Figure 1 is a perspective view of my envelop open;
  • Fig. 2 is a plan view of the envelop closed, and
  • Fig. 3 is a transverse section taken on the line XX of Fig. 2.
  • the blank from which the envelop is made may be cut in any usual or suitable form, but it is preferably made from heavy, easily compressed paper.
  • the edge A of the flap B which, in unsealed envelops, is free to open and close, is pressed into, or otherwise provided "with, corru ations O and is also formed with a reverse fold D parallel with the edge A.
  • a depressed panel F is formed, to which the mucilage (preferably of high grade) is ap lied.
  • the lower and upper edges G and (g of this panel are provided with recesses H adapted to receive the edge A and fold D, respectively, of the free flap.
  • the envelop may be sealed by moistening the mucilage in the panel F and then slipping the edge A and fold D of the free flap into the recesses II oi the opposite llap. ⁇ Vhen adhesion has taken place between the two 'l'laps of the envelop, it will be found impossible to reopen the same without mutilation.
  • a flap having a folded edge provided with transverse corrugations, in combination with a longitudinal quadrilateral panel extending partway across the opposite llap, and adapted to receive said corrugated edge.
  • a free llap having a reverse "fold near its edge and corrugations below said fold, in combination with'an adhering Ilap formed with a depressed quadrilateral panel having a longitudinal marginal recess on each side thereof, said anel being adapted to receive the corrugatec portion of the free flap.
  • An envelop comprising a body portion and a flap, said body portion bein formed with a depressed longitudinal pane l shorter than the envelop, and the flap being pro vided with corrugations adapted to be re ceived by the panel.

Description

PATENTED APR. 21, 1908.
0. 0. BLAKE.
SAFETY ENVELOP. APPLICATION FILED MAY 17, 1906.
Witnesses i In V67? T0 7".
Catkegne CQBZwk a,
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UNITED sTA Es PATENT OFFICE.
CATHERINE C. BLAKE, OF ROUND GROVE TOWNSHIP, McLEOD COUNTY, MINNESOTA.
SAFETY-ENVELOP.
No. seams.
Application filed May 17, 1906.
To all whom it may concern:
Be it known that I, CATHERINE BLAKE, a citizen of the United States, residing in Round Grove township, in the county of Me- Leod and State of Minnesota, have invented a new and useful Improvement in Safety- Envelops, of which the following is a specification.
My invention relates to improvements in safety envelops, its object being to produce an envelop which, after being sealed, cannot be reopened without destroying or so defacing it that the fact of its having been opened will be apparent. By its use the danger of opening envelops for the purpose of surreptitiously reading letters or wrongfully removing remittances will be greatly reduced.
In the accompanying drawings forming part of this specification, Figure 1 is a perspective view of my envelop open; Fig. 2 is a plan view of the envelop closed, and Fig. 3 is a transverse section taken on the line XX of Fig. 2.
The blank from which the envelop is made may be cut in any usual or suitable form, but it is preferably made from heavy, easily compressed paper. The edge A of the flap B, which, in unsealed envelops, is free to open and close, is pressed into, or otherwise provided "with, corru ations O and is also formed with a reverse fold D parallel with the edge A. In the opposite or adhering flap E of the envelop a depressed panel F is formed, to which the mucilage (preferably of high grade) is ap lied. The lower and upper edges G and (g of this panel are provided with recesses H adapted to receive the edge A and fold D, respectively, of the free flap.
Specification of Letters Patent.
Patented April 21, 1908.
Serial No. 317,279.
The envelop may be sealed by moistening the mucilage in the panel F and then slipping the edge A and fold D of the free flap into the recesses II oi the opposite llap. \Vhen adhesion has taken place between the two 'l'laps of the envelop, it will be found impossible to reopen the same without mutilation.
Having described my invention, what I claim as new and desire to protect by Letters Patent, is:
1. In an envelop, a flap having a folded edge provided with transverse corrugations, in combination with a longitudinal quadrilateral panel extending partway across the opposite llap, and adapted to receive said corrugated edge.
2. In an envelop, a free llap having a reverse "fold near its edge and corrugations below said fold, in combination with'an adhering Ilap formed with a depressed quadrilateral panel having a longitudinal marginal recess on each side thereof, said anel being adapted to receive the corrugatec portion of the free flap.
3. An envelop comprising a body portion and a flap, said body portion bein formed with a depressed longitudinal pane l shorter than the envelop, and the flap being pro vided with corrugations adapted to be re ceived by the panel.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
OATHERIN E C. BLAKE.
I/Vitnesses:
E. SCHMlTZ, W. J. BLASS.
US31727906A 1906-05-17 1906-05-17 Safety-envelop. Expired - Lifetime US885573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US31727906A US885573A (en) 1906-05-17 1906-05-17 Safety-envelop.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31727906A US885573A (en) 1906-05-17 1906-05-17 Safety-envelop.

Publications (1)

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US885573A true US885573A (en) 1908-04-21

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US31727906A Expired - Lifetime US885573A (en) 1906-05-17 1906-05-17 Safety-envelop.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420963A (en) * 1945-05-23 1947-05-20 Malo Edward Joseph Closing flap for envelopes and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420963A (en) * 1945-05-23 1947-05-20 Malo Edward Joseph Closing flap for envelopes and the like

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