Improvements in Combined Letter Sheets and Envelopes.
Year: 1890

page_text: Date of Application, 25th Mar., 1890
Complete Specification Left, 8th Nov., 1890-Accepted, 20th Dec.. 1890
PROVISIONAL SPECIFICATION.
Improvements in Combined Letter Sheets and Envelopes.
1, WILLIAM HENRY KISTER, of Corner 3rd and Market Strects, Harrisburg,
in the County of Dauphin and State of Pennsylvania, United States of America,
Attorney-at-Law, do hereby declare the nature of this invention to be as
follows:-
This invention relates to combined letter sheets and envelopes. The upper end
of the body of the combined letter sheet and envelope is formed with a large flap
gummed along its upper edge for a short distance and at the sides of the body
immediately below the base of the flap it is provided with end flaps. Transversely
of the body in alignment with the upper edges of the end flaps is produced a line
of perforations indicating the point at which the top flap is to be folded and upon
each side of said line of perforations two other similar lines are produced the one
line extending across the flap and the other line extending across the head of the
body and across the end flaps. At the top of the end flaps above the latter line is
placed a suitable quantity of sealing material and a vertical line of perforations is
produced at the junction of the end flaps with the body.
In use the body of the sheet is folded upon itself, the sealing material on the
flaps is moistened, the end flaps folded and sealed upon the body, and the large
flap folded and scaled upon said body. While the sheet and envelope as a whole is
securely held during transmission, its upper edge may be readily torn off when
necessary and the envelope unsealed and this unsealing is effected by one motion,
rendering separate tearing of top and ends unnecessary.
Dated this 25th day of March 1800
W. H. KISTER.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Combined Letter Sheets and Envelopes.
I, WILLIAM HENRY KISTER, of Corner, 3rd and Market Streets, Harrisburg,
in the County of Dauphin and State of Pennsylvania, United States of
America, Attorney-at-Law, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to combined letter sheets and envelopes; and will be
described with reference to the accompanying drawings, forming part of this
Specification, in which
Figure 1 is a plan view of the combined letter sheet and envelope extended
for writing;
Figure 2 is a perspective view of the same, partly folded: and
Figure 3 is a similar view of the same, folded and sealed for mailing.
Similar letters of reference indicate corresponding parts in all the views.
The body a of the letter sheet and envelope is, for convenience, preferably
provided with lines as a guide for the writing, but it will be understood that such
ruling is not a necessity. The upper end of the said body is formed with a large
flap provided along its upper edge for a short distance with a line of gum or
other suitable sealing material &', and at the sides of the said body, immediately
b

page_text: below the base of the flap b, are formed end flaps c. Transversely of the body a,
in alignment with the upper edges of the end flaps c, is produced a line of
perforations d indicating the point at which the flap is to be folded and upon each
side of said line of perforations two other similar lines d and d² are produced the
line d extending across the flap and the line d² extending across the head of the
body a and across the end flaps c. At the top of the end flaps above the line dis
placed a suitable quantity of sealing material e and a vertical line of perforations c
is produced at the junction of the end flaps with the body a, all as shewn in
Figures 1 and 2 of the drawing.
In use, the body a of the sheet is folded upon the transverse dotted lines shewn
in Figure 1 of the drawing, the sealing material on the flaps is moistened, the end
Hlapse folded on the lines and sealed upon the body a, and the large flap folded
on the line d and sealed upon said body. The two lines of perforations d'and d
are thus brought exactly upon each other and while the sheet and envelope as a
whole is securely held during transmission, its upper edge may be readily torn off
when necessary and the envelope unsealed, and this unsealing is effected by one
motion, rendering separate tearing of top and ends unnecessary.
While I have shewn the lines d and el made up of perforations like the lines d' d
they are intended simply to afford a guide for the accurate folding of the flaps and
not to aid in opening or tearing off the flaps although they may be so utilized if
deemed desirable.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed declare that what I
claim is
1. In a combined letter sheet and envelope, a main body formed with a top flap
and two end flaps and provided with lines of perforations extending across the top
Hlap and the head of the body and the end flaps, substantially as shewn and
described.
2. In a combined letter sheet and envelope, a main body formed with a top flap
and two end flaps and provided with two lines of perforations extending across the
top flap and the head of the body and the end flaps at equal distances from the
folding line of the body and top flap, the top flap having a central seal at its outer
edge and the end flaps having a seal at their upper edge above the perforations
therein, substantially as shewn and described.
Dated this 8th day of November 1890
W. H. KISTER.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.