AN IMPROVED COMBINED LETTER SHEET AND ENVELOPE
Year: 1884

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine Lake & Co, Patent Agents
Southampton Buildings in the County of Middlesex do hereby declare the nature
of my invention for "AN IMPROVED COMBINED LETTER SHEET AND ENVELOPE
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The object of this invention is to provide for business correspondence an improved
combined letter sheet and envelope. The envelope can be opened readily with the
finger, a pencil or penholder from its open end without endangering its contents.
The old shape and size of envelopes are generally retained, although the improved
article can be made to any desired width and length. The letter has an uniform
thickness and but one fold, in addition to its primary fold, is required. When the
letter is folded and sealed at the marginal end there are two pockets for enclosing
mailable matter.
In the accompanying drawing
•
Figure 1 represents a combined letter sheet and envelope, made in accordance
with my said invention, the sheet being open and ready for use.
Figure 2 is a view shewing the sheet folded in its marketable form and ready to
be opened for use as shown in Figure 1.
Figure 3 is a view of the letter as folded and ready to be used as an envelope for
enclosing other mailable matter.
Figure 4 is a view of the back of the complete combination letter envelope.
Figure 5 is a view of the face or front side of the completed combination letter
envelope shewing the printed instructions thereon.
A, Figure 1, indicates the writing surface ready for use; and a the marginal flap
adapted to fold on the dotted or perforated line.
a indicates the lower part of the sheet which is folded at a³, and which, when
folded, appears as shewn in Figure 2.
a³ indicates the final enclosing flap.
After the sheet has been folded as shewn in Figure 2 it is again folded at 6* so
that the lower edge b coincides with the edge b¹. The fold 6 is the only fold,
besides the primary fold, which is made to prepare the sheet for sealing by the
enclosing flap a³.

page_text: 63, 64, Figure 2 indicate the gummed parts and 6 indicates the marginal flap a
shewn in Figure 1 turned down but not overlapping the sheet a¹
Figure 3 shews the completed letter folded at 6s, of Figure 2 and sealed at one
end, the envelope flap being open. This flap, when lapped and sealed, completes
the envelope for mailing.
Figure 4 shews the back of the complete envelope letter and Figure 5 shews the
face or front view of the completed envelope letter with all guiding instructions to
preserve symmetrical appearance, and for convenience to the postmasters.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
First. The combined letter sheet and envelope consisting of a sheet of paper
folded near its centre and provided on one edge with a sealing flap, and on the end
adjacent thereto with a marginal flap not overlapping the folded section of the
sheet, the two sections of the said marginal flap being adapted to be sealed together
so as to close the end of the folded sheet, substantially as described.
Second. The combined letter sheet and envelope, consisting of a sheet of paper,
folded near its centre, and having on one edge a sealing flap gummed on its upper
side, and on the edge adjacent thereto, a marginal fold not overlapping to folded
section of the sheet, and gummed on its under side so that the two parts of said
fold may be sealed together, substantially as described.
Dated this 25th day of November 1884.
HASELTINE, LAKE & Co.,
For the Applicant.