AN IMPROVEMENT IN OR ADDITION TO DOORS, AND DOOR AND WINDOW FRAMES
Year: 1854

page_text: Sealed the 26th January 1855, and dated the 17th August 1854.
PROVISIONAL SPECIFICATION left by the said Charles Blake at the
Office of the Commissioners of Patents, with his Petition, on the 17th
August 1854.
I, CHARLES BLAKE, of Saint Leonards, in the County of Sussex, Painter, do
hereby declare the nature of the said Invention for "AN IMPROVEMENT IN OR
ADDITION TO DOORS, AND DOOR AND WINDOW FRAMES," to be as follows:-
My Invention has for object the exclusion of draught and dust, and con-
sists in fitting spring slides to doors and windows, or to their frames. These
slides, in addition to keeping out the weather, prevent rattling, and yield to
any inequalities in the wood, arising from warping, shrinkage, or otherwise.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, file
by the said Charles Blake in the Great Seal Patent Office on the
17th February 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
BLAKE, of Saint Leonards, in the County of Sussex, Painter, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of August, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of
Her reign, did, for Herself, Her heirs and successors, give-and grant unto
me, the said Charles Blake, Her special licence that I, the said Charles
Blake, my executors, administrators, and assigns, or such others as I, the
said Charles Blake, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, usc,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "AN IMPROVEMENT
IN OR ADDITION TO DOORS, AND DOOR AND WINDOW FRAMES," upon the condition
(amongst others) that I, the said Charles Blake, by an instrument in writing
under my hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after-the date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Blake, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed
(that is to say):-
My Invention has for object the exclusion of draught and dust, and consists
in fitting spring slides to doors and windows, or to their frames. These slides,
.in addition to keeping out the weather, prevent rattling, and yield to any
inequalities in the wood, arising from warping, shrinkage, or otherwise.
Figure 1 of the Drawings annexed represents a horizontal section, and
Figure 2 a vertical section, of a door and door frame, having spring slides
adapted thereto, according to my Invention, and with the door closed; Figure 3
is a horizontal section, shewing the door not quite closed; and Figure 4 is a
side view of one of the slides detached. A is the door frame, and B is the
door; C is a spring slide, fitted to a groove in the back door stile, so as to
enter a groove in the jamb or jamb lining, to which the door is hinged, when

page_text: the door is closed; and D, D, are spring slides, fitted to grooves formed in the
projecting strips or stops E, E, attached to the jamb or jamb lining, to which
the door bolts or locks, and to the upper part of the door frame, and with
which the front door stile and the upper rail of the door come in contact when
the door is closed. This arrangement of the slides C and D entirely prevents
the entrance of draught and dust when the door is closed. The slides C and D
are fitted with springs F, F, at the back, to keep them pressed constantly
outwards, and they are kept in their places by means of the collars G, G,
which are fixed in the grooves to which the slides are fitted. The manner in
which the spring slides are applied to windows and their frames of the ordinary
description, or to what are known as French windows, will be readily understood
from the foregoing description.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that what I claim is,―
The adaptation of spring slides to doors, and door and window frames, in the
manner and for the purpose herein-before explained.
In witness whereof, I, the said Charles Blake, have hereunto set my
hand and seal, this Ninth day of February, One thousand eight
hundred and fifty-five.
CHARLES BLAKE. (L.8.)