AN IMPROVEMENT OR IMPROVEMENTS IN METALLIC SASH BARS FOR WINDOWS, SKYLIGHTS, HOTHOUSES, AND OTHER LIKE PURPOSES
Year: 1862

page_text: LETTERS PATENT to William Perks, the younger, of Birmingham, in the
County of Warwick, Glass and Lead Merchant, for the Invention of
"AN IMPROVEMENT OR IMPROVEMENTS IN METALLIC SASH BARS FOR WINDOWS,
SKYLIGHTS, HOTHOUSES, AND OTHER LIKE PURPOSES."
Sealed the 7th November 1862, and dated the 29th May 1862.
PROVISIONAL SPECIFICATION left by the said William Perks at
the Office of the Commissioners of Patents, with his Petition, on
the 29th May 1862.
I, WILLIAM PERKS, the younger, of Birmingham, in the County of
Warwick, Glass and Lead Merchant, do hereby declare the nature of the
said Invention for "AN IMPROVEMENT OR IMPROVEMENTS IN METALLIC SASH
BARS FOR WINDOWS, SKYLIGHTS, HOTHOUSES, AND OTHER LIKE PURPOSES," to be as
follows:-
My Invention has for its object to facilitate the glazing of windows;
skylights, and other glazed openings or structures, and to prevent the incon-:.

page_text: veniences which arise by the contraction of the putty in windows and skylights
glazed in the ordinary manner.
I make the metallic sash bars very nearly of the ordinary figure, that is, of
the figure in cross section of an inverted T, but I make the top of the vertical
rib somewhat thicker than the other parts of the rib. Upon the said vertical
rib of the sash bar I place a folded or doubled metallic strip, which fits upon
the said rib and clips it closely, the lower edges of the said doubled strip being
turned into a nearly horizontal plane, so as to cover or partly cover the
horizontal parts of the sash bar on which the panes of glass rest. The said
folded or doubled metallic strip is fixed upon the sash bar by its opposite
sides being partially separated, when it is placed upon the bar, and allowed to
close and thereby fix itself. In glazing windows, skylights, or other openings
or structures, provided with sash bars having my improvements, the folded
or double metallic strip is removed from each of the sash bars and the panes
of glass are dropped into their places; the folded or doubled metallic strip is
then sprung or placed upon each sash bar, when the panes are fixed in their
places without the use of putty or the necessity for skilled labour.
My Invention may be made in zinc or any other metal which has been or
can be conveniently used in the manufacture of sash bars.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Perks in the Great Seal Patent Office on the
22nd November 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
PERKS, the younger, of Birmingham, in the County of Warwick, Glass and
Lead Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of May, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-fifth year of
Her reign, did, for Hérself, Her heirs and successors, give and grant unto
me, the said William Perks, Her special licence that I, the said
William Perks, my executors, administrators, and assigns, or such others
as I, the said William Perks, 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

page_text: 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 "AN IMPROVEMENT OR IMPROVEMENTS IN METALLIC SASH BARS FOR WINDOWS,
SKYLIGHTS, HOTHOUSES, AND OTHER LIKE PURPOSES," upon the condition (amongst
others) that I, the said William Perks, 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 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 William Perks, 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 thereof, that is to say:-
My Invention consists of the improvement or improvements herein-after
described and illustrated in the accompanying Drawing, in metallic sash
bars for windows, skylights, hothouses, and other like purposes; the object of
my Invention being to facilitate the glazing of windows, skylights, and other
glazed openings or structures, and to prevent the inconveniences which arise
by the contraction of the putty in windows and skylights glazed in the ordinary
manner.
In carrying my Invention into effect, I make the metallic sash bars very
nearly of the ordinary Figure, that is, of the Figure in cross section of an
inverted T, but I make the top of the vertical rib somewhat thicker than the
other parts of the rib. Upon the said vertical rib, of the sash bar I place
a folded or doubled metallic strip, which fits upon the said rib and clips it
closely, the lower edges of the said doubled strip being turned into a nearly
horizontal plane, so as to cover or partly cover the horizontal parts of the sash
bar on which the panes of glass rest. The said folded or doubled metallic strip
is fixed upon the sash bar by its opposite sides being partially separated, when.
it is placed upon the bar and allowed to close and thereby fix itself.
Figure 1 of the accompanying Drawing represents in side elevation a
portion of a window or skylight the bars of which are made according to my
Invention; Figure 2 represents an end elevation of a folded or doubled strip
of the kind which I use with the said bars; Figure 3 represents an elevation
of a portion of a window or plan of a skylight having folded or doubled strips-
fixed on the sash bars; Figure 4 represents an end elevation of the window. or
skylight having panes of glass glazed therein according to my Invention; and

page_text: Figure 5 represents a transverse section of the same.
The same letters are
employed to indicate the same parts in the several Figures of the Drawing.
In the Drawing the sash bars are marked a, a²; the shape of which bars
will be best understood by an examination of the section Figure 5. The said
bars a, a, are connected to the framing 6 of the window or.skylight in the
ordinary way. c are the folded or doubled metallic strips which are placed
and fixed on the ribs a of the bars a, a², in the manner represented in Figures
3, 4, and 5. The sides of the doubled strips c are not parallel, but are slightly
inclined to each other, as represented in the Drawing. In glazing the window.
or skylight, or other openings or structures provided with sash bars having my
improvements, the folded or doubled strips c, c,. are removed from the sash
bars a, a, and the panes of glass d, d, are dropped into their places, the said
panes resting on the parts a², a², of the lower part of the sash bars, as best seen
in Figure 5. The panes d, d, having been placed on the parts a², a², of the
bars, the sides of the metallic strips c are partially separated and then placed
or sprung upon the sash bars, as seen in the Drawing, when the panes d, d,
are securely fixed in their places without the use of putty or the necessity of
skilled labour. Or the strips c may be placed upon the bars a, a², by a
sliding motion, instead of by springing them thereon. When the metallic
strips c, c, are placed or sprung on the sash bars, the sides of the said strips
bear with some force against the inclined sides of the vertical ribs a of the
sash bars a, a, and the curved ends c² of the said strips c bear upon the
edges of the panes of glass d, and hold them firmly upon the horizontal parts
a, a², of the sash bars, the said ends c also preventing the entrance of wet
at the edges of the said panes d. When required the strips c may be fixed
to the sash bars by pins passed through the said strips and bars. I do not
limit myself to any sectional Figure of the sash bar, provided it has a flange at
its bottom edge.
My Invention may be made in zinc or any other metal which can be
conveniently used in the manufacture of sash bars.
Having now described the nature of the said Invention, and the manner
in which the same is to be performed, I wish it to be understood that
I do not limit myself to the precise details herein described and illustrated,
as the same may be varied without departing from the nature of the said
Invention; but I claim as my Invention the improvement or. improve-
ments in metallic sash bars for windows, skylights, hothouses, and other like
purposes herein-before described and illustrated in the accompanying Drawing,
that is to say, the addition to sash bars of folded or doubled metallic strips

page_text: fitting thereon, by means of which said folded or doubled strips the panes of
glass are fixed securely on the said bars without the use of putty.
In witness whereof, I, the said William Perks, have hereunto set my
band and seal, this Twenty-first day of November, in the year of our
Lord One thousand eight hundred and sixty-two.
Witness,.
RICHARD SKERRETT,
Clerk to George Shaw,
Birmingham.
WILLIAM PERKS, JUN (L.S.)