IMPROVEMENTS IN THE CONSTRUCTION OF LEADEN WINDOW SASHES, CASEMENTS, OR GLAZED COVERINGS, OR PARTITIONS
Year: 1862

page_text: LETTERS PATENT to William Edward Gedge, of the Firm of John Gedge
and Son, of No. 11, Wellington Street, Strand, in the County of
Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN THE
CONSTRUCTION OF LEADEN WINDOW SASHES, CASEMENTS, OR GLAZED COVERINGS,
OR PARTITIONS."-A communication from abroad by Joseph Nicolas
' Montain Liézard, and Edmond Edouard: Liézard, Junior, both of
Pontoise, in the Department of the Seine-et-Oise, France.
Sealed the 20th March 1863, and dated the 26th September 1862.
PROVISIONAL SPECIFICATION left by the said William Edward Gedge
at the Office of the Commissioners of Patents, with his Petition, on the
26th September 1862.
I, WILLIAM EDWARD GEDGE, of the Firm of John Gedge and Son, of
No. 11, Wellington Street, Strand, in the County. of. Middlesex, Patent
Agent, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE CONSTRUCTION OF LEADEN WINDOW SASHES, CASEMENTS, OR GLAZED
COVERINGS OR PARTITIONS," communicated to me from abroad by Josoph
Nicolas Montain Liézard; and Edmond Edouard Liézard, Junior, both of
Pontoise, in the Department of the Seine-et-Oise, Paris, France, to be as
follows:-
The leads used hitherto in covering glazed galleries, and for similar purposes
present the double inconvenience of considerably obstructing the light by their
breadth, and providing no passage for condensed vapor, which render these
galleries uninhabitable.

page_text: This Invention completely remedies these defects. The cheeks of leads
manufactured according to this Invention need not be half an inch broad.
The adhesion of the glass to the leads completely excludes cold from the
interior, and renders a glazed gallery as warm as a parlor. The leads are either
straight or bent, and of variable length, small openings are made at intervals
through which the condensed vapor is conducted to the exterior. The leads
are rolled of one piece without soldering. The chambers or grooves may be
of any width, or depth, so as to hold any kind of glass. The cheeks of the
leads may also vary in width, but it must be noted that the cost is in all cases
less than the cost of the leads now used for casements or even of zinc
casements.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Edward Gedge in the Great Seal Patent Office
on the 25th March 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD GEDGE, of the Firm of John Gedge and Son, of No. 11, Wellington
Street, Strand, in the County of Middlesex, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of September, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her reign
did, for Herself, Her heirs and successors, give and grant unto me, the said
William Edward Gedge, Her special licence that I, the said William Edward
Gedge, my executors, administrators, and assigns, or such others as I, the said
William Edward Gedge, 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, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
THE CONSTRUCTION OF LEADEN WINDOWS, SASHES, CASEMENTS, OR GLAZED
COVERINGS OR PARTITIONS," a communication to me from abroad by Joseph
Nicolas Montain Liézard, and Edmond Edouard Liézard, Junior, both
of Pontoise, in the Department of the Siene-et-Oise, France, upon the
condition (amongst others) that I, the said William Edward Gedge, my
executors or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office within

page_text: six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said William Edward Gedge, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Sheet of Drawing hereunto
annexed, and forming part of this my Specification, and to the figures
and letters of reference placed thereon.
By the use of the improved sashes forming the subject of this Invention
glazed roofs, which have hitherto presented so many inconveniences will
become convenient and desirable, and much more light will be obtained than
whero the ordinary leaden sash is used, this latter encroaching so much upon
the panes of glass.
The cheeks of these improved sashes are not more than half an inch broad,
and the adhesion of the glass to the leaden sash completely excludes cold
from the interior, thus making a glazed gallery as warm as a parlor. But
this heat which has hitherto been so prejudicial inasmuch as changing.-into
steam it rendered glazed apartments uninhabitable, necessitated some arrange-
ment for carrying off the condensed vapour, and therefore the improved
leaden sashes the subject of this Invention, which may be straight or curved
and of any suitable length, are provided with small openings at certain distances
from each other, and hidden at the bottom of the chamber groove or frame
so that the water running over the inside glass falls into the chambers or
grooves, and finds a direct exit to the exterior.
In the Drawing, Figure 1 represents a simple, Figure 2 a composite, and
Figure 8 an arrangement of these improved leaden sashes being a combination
of Figures 1 and 2. The same results are obtained by either arrangement, but
that shewn, Figure 8, offers greater solidity than that shewn Figure 2, and is
more costly; the cost, however, in one or other case being less than that of
ordinary leaden or even zino sashes or casements, At Figure 1, A to B
indicates the chamber groove or frame serving to receive the pane of glass
which is to form the ceiling within the glazed roof; C, D, fillet, on which the
upper pane is applied, so that the condensed vapour runs down a prepared
incline to the point O, that is to say, that this condensed vapour finding its issue
in the hollow part of the fillet C, D, passes to the exterior, and runs of like
the rain, which falls on the roof. Figure 2 differs from Figure 1 only in the
fillet or rib being in the centre of the rod, and a cheek being left at the side
of the fillet to receive the condensed steam and conduct it through the
openings o, o, o, to the exterior. Figure 3 represents two perfect squares,

page_text: AB, CD, EF, GH, open only on one face joined together at the full angle
of each of the two squares. Each square represents a chamber groove.or
framé arranged to receive, the pane in such wise that the upper pane, and
the lower are only separated by the thickness of a pane of glass. This
Figure is also provided with issues for escape of the condensed steam to the
exterior and these two squares with contrary openings are obtained at one
jet or cast, that is to say, that there is no soldered joint, all being of one piece.
The breadth and depth of the chambers, grooves or frames varies at will,
and glass of every description may be used with these improved leaden sashes,
and I would here observe that the cheeks of these leads may be of as little
breadth as may be desired, and are rolled out. Below each Figure is shewn
cross section at K, L. It will be evident that these leaden sashes are not only
applicable to glazed coverings or roofs, but to windows, and glazed partitions
of every description.
In witness whereof, I, the said William Edward Gedge, have here--
unto set my hand and seal, this Twenty-fourth day of March, in the
year of our Lord One' thousand eight hundred and sixty-three.
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