Improvements in Envelopes.
Year: 1899

page_text: Date of Application, 27th Apr., 1899
Complete Specification Left, 29th Jan., 1900-Accepted, 3rd Mar., 1900
Improvements in Envelopes.
I, PERCY RICHARD JULIUS WILLIS, of Fairfield, Kingston-on-Thames, in the
County of Surrey, Consulting Engineer, do hereby declare the nature of this
invention (a communication to me from abroad by Jacob Schaub, of
Salt Lake City, Utah, U.S.A., Inventor), to be as follows:-
This invention relates to envelopes; the object of the invention being to provide
an article of the kind which cannot be opened and resealed without mutilation.
An envelope constructed in accordance with my improvement, comprises the
usual rectangular blank having four flaps. By my improvement, the lower flap
has a tag which is doubled upon itself to form a pocket when its edges are gummed
together. The side flaps are also formed with extending tags, as is also the upper
flap. The latter is gummed on the inside and its tag is coated with a suitable
moisture resisting substance-such as varnish on the outside.
The envelope is formed by folding the lower flap upwards; the side flaps over
the lower flap and made to adhere thereto, and to each other; but separated at
their ends from the pocket, so that, when folded down, the upper flap may be sealed
down upon the side flaps and its tags sealed within the pocket. Unsealing of the
envelope is prevented by the moisture resisting substance on the exterior of the
tag. The substance may, if desired, be applied over all the parts of the envelope
where its flaps adhere, as a further protection.
I, PERCY RICHARD JULIUS WILLIS, of Fairfield, Kingston-on-Thames, in the
County of Surrey, Consulting Engineer, do hereby declare the nature of this
invention (a communication to me from abroad by Jacob Schaub, of Salt Lake
City, Utah, U.S.A., Inventor) and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
This invention relates to certain new and useful improvements in envelopes,
the object of the same being to provide an envelope which cannot be opened
without detection by either a pen-knife, pencil or other pointed instrument or by
the application of moisture either in the form of steam or hot or cold water.
A further object of the invention is to provide an envelope which is adapted to be
used for second class matter in which the sealing flap is neatly held in close
contact with the outer surface of the back of the envelope retaining the contents
Price Rd

page_text: down upon the side flaps 3 and 4, and its tongue sealed within the pocket, but is
protected from unsealing by the exterior application of moisture as specified.
(3) An envelope having a bottom flap 2 whose tongue has an inwardly folded
downwardly extended portion and an upwardly turned and extended portion
leading from the downwardly extended portion and forming a
said upwardly extending portion being extended above the inward fold of the
said tongue, the side flaps having at their ends tongues overlapping the said
pocket, an opening for the tongue of the top flap being provided, and the top flap
substantially as set forth.
D
..
1000
pocket,