Improvements in Envelopes.
Year: 1891

page_text: Date of Application, 9th Oct., 1891-Accepted, 21st Nov., 1891
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Improvements in Envelopes.
I, WILLIAM JEOONIAS PROKETT, of 1719 Curtis Street, City of Denver,
County of Arapahoe, State of Colorado, United States of America, Manufacturer,
do hereby declare the nature of this invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to a novel form and construction of envelope provided with
projecting pockets at two adjacent corners. In these auxiliary pockets are concealed
the extremities of a thread or wire to be utilized as an opener.
I am aware that an opener consisting of a thread extending between the adjacent
corners of envelopes otherwise of ordinary construction has been heretofore protected
by Letters Patent, but in these Patents, so far as 1 am aware, the opener protrudes
from the envelope corner or corners, and is thus exposed so that it may be grasped.
These exposed extremities of the opener are very objectionable and are believed to
For instance the exposed opener
be impracticable for several obvious reasons.
may accidentally catch upon some object while being handled in the post offices,
when a sudden pull would then open the envelope and completely denude its
contents.
My improvement is designed to overcome this difficulty inasmuch as my projecting
corner pockets conceal the extremities of the opener, and at the same time may be
torn off without injuring the enclosure, since they project beyond the same. This
envelope is believed to be practicable and devoid of objectionable features.
It will be fully understood by reference to the accompanying drawing in which
is illustrated an embodiment of the invention. In this drawing
Fig. 1 shows the blank from which my improved envelope is formed.
Fig. 2 shows the side flaps folded with the opener in place.
In Fig. 3 the end flap is folded over the opener which is shown in dotten lines.
In these views let the numeral 10 designate the end flap, 15 the side flaps, and 20
the other end flap. In forming the blank, slits 25 are cut between the end flap 20
and the side flaps so that when the side flaps are placed as shown in Fig. 2, pro-
jections 30 are left which extend beyond the side flap folding lines 35. The
opener 40 is then placed as shown in Fig. 2 with its extremities engaging parts 30
where they may be secured with a little mucilage or in any other suitable manner.
Flap 20 is then folded and sealed as shown in Fig. 3 forming the projecting
auxiliary pockets 45 enclosing the extremities of the opener which are preferably
provided with knots giving them a slight enlargement. In opening the envelope
either projecting pocket 45 with the enclosed extremity of the opener is grasped
between the thumb and finger. The pocket is then torn off and the opener pulled
outward so as to cut the envelope on the folding line 50.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First :-A suitable blank provided with slits 25, 25, cut inward from its edge
between one flap and the two adjacent flaps, and extending from the extremities of
the folding line of the intermediate flap to intersect the folding lines of the wing
flaps, whereby when the last named flaps are folded, corners 30, 30, shall be left
projecting beyond the folding lines of said flaps, and adapted to form pockets 45, 45,
extending beyond the main enclosure when the third or intermediate flap is folded,
_11

page_text: Second: An envelope provided with auxiliary pockets at two adjacent corners,
said pockets projecting beyond the main enclosure, in combination with a stout
thread, small cord or wire with its body portion lying within the folding crease
between the auxiliary pockets while its extremities extend beyond the main enclosure
into said pockets where they are concealed and fastened, substantially as and for 5
the purpose set forth.
Dated this 24th day of September A.D. 1891.