IMPROVED MEANS OF GLAZING OR FIXING SHEETS OF GLASS IN GREENHOUSES, CONSERVATORIES, PROVISIONAL SPECIFICATION
Year: 1881

page_text: LETTERS PATENT to Joseph Russell, of Charing Cross, in the City of
Westminster, Hot Water Engineer, for an Invention of "IMPROVED MEANS OF
GLAZING OR FIXING SHEETS OF GLASS IN GREENHOUSES, CONSERVATORIES,
PROVISIONAL SPECIFICATION left by the said Joseph Russell at the Office
of the Commissioners of Patents on the 31st March 1881.
JOSEPH RUSSELL, of Charing Cross, in the City of Westminster, Hot Water
Engineer. "IMPROVED MEANS OF GLAZING OR FIXING SHEETS OF GLASS
IN GREENHOUSES, CONSERVATORIES, SKYLIGHTS, ROOFS, AND OTHER LIKE
STRUCTURES."
My Invention relates to an improved method of fixing glass in conservatories,
greenhouses, glazed roofs, skylights, and other similar structures, without the use
of putty, and consists in covering a wood or metal sash bar or rafter of various
sections with sheet lead, copper, or other material in one piece in the width without
joint formed into water gutters on each side, and arranged so that the free edges
of the covering material can be folded down over the edges of the glass, the said
covering material and the glass being then secured in position by screws or pins
driven into the sash bar at intervals. The sash bar or rafter is made with a central
rib, either angular, elliptical, or circular, with a semicircular or angular water
gutter on each side, forming rebates for the glass to lie in. The covering material
is then worked over the central rib and into and round the two water gutters,
then doubled back into the gutters (making two thicknesses in these gutters), and
turned up on both sides of the central rib, and the edges on both sides left free.
The glass is then inserted between the rebates formed by the water gutters and the
free edges of the covering material are then turned down and folded over the
glass, and secured in position by pins driven into the rib at intervals, or else by a
clip answering the same purpose.
When the glass abuts on a principal rafter, curb, or ridge, a half section of the
bar is attached to the side of such rafter, curb, or ridge, the edge of the covering
material next the rafter being either folded down between the rafter and bar, or
continued over the top of the rafter.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Russell in the Great Seal Patent Office
30th September 1881.
on the
JOSEPH RUSSELL, of Charing Cross, in the City of Westminster, Hot Water
Engineer. "IMPROVED MEANS OF GLAZING OR FIXING SHEETS OF GLASS
IN GREENHOUSES, CONSERVATORIES, SKYLIGHTS, ROOFS, AND OTHER LIKE
STRUCTURES."
My Invention relates to an improved method of fixing glass in conservatories,
greenhouses, glazed roofs, skylights, and other similar structures without the use
of putty, and consists in covering a wood or metal sash bar or rafter of various
sections, with sheet lead, copper, or other material in one piece in the width
without joint, formed into water gutters on each side, and arranged so that the
free edges of the covering material can be folded down over the edges of the glass.
The sash bar or rafter is made with a central rib or ridgé, either angular, elliptical,
or circular, with a semicircular or angular groove on each side forming rebates for
the glass to lie in. The covering material is worked over the central rib, and into
and round the two grooves, then doubled back into the grooves (making two
thicknesses in these grooves), and turned up on both sides of the central rib, and
the edges left free. The glass is inserted between the sash bars or rafters and
lies in the rebates formed by the grooves, and the free edges of the covering
material are then turned down and folded over the glass and secured in position
by pins driven into the rib at intervals, or else by a clip answering the same
purpose.
When the glass abuts on a principal rafter, curb, or ridge, a half section of the
bar is attached to the side of such rafter, curb, or ridge, the edge of the covering
material next the rafter being either folded down between the rafter and bar or
continued over the top of the rafter.
DESCRIPTION OF DRAWINGS.
Figure 1 represents a cross section of the form of rafter or sash bar which I
prefer; Figure 2 represents a cross section of the same rafter or sash bar with the
covering material applied thereto, but before the glass is inserted; Figure 3
represents a cross section of the same with the glass inserted, and the edges of the
covering material folded down upon the glass; Figure 4 shows a half section of
the bar attached to the side of a principal rafter.
The sash bar or rafter A is preferably made of wood planed or moulded in the
ordinary way, and is formed with a central longitudinal rib or ridge a, and at
either side thereof with two semicircular grooves or channels b, b, forming rebates
or shoulders c. The form, both of the rib and the channels, may however be
varied; d is a strip of sheet metal, preferably lead, forming the covering of the
sash bar or rafter, by means of which the glass is secured.
This strip is worked over the central rib a and into the grooves 6 by being
drawn together with the sash bar through suitably formed dies, or in other suitable
way. Owing to the form of the rib a, which is of diminished thickness opposite
the grooves b, it holds the metal strip securely upon it. The strip is of such
width as to admit of its being folded at the shoulders c, and doubled back into
the grooves 6 and up alongside of the rib a to the extent shown at d¹ in Figure 2.
This is preferably effected by folding or doubling back the edges of the strip at
the proper points before applying it upon the sash bar, or it may be done after
working the strip round the rib a and into the grooves b. The glass g is laid

page_text: upon the fold of the strip at c, and the free edges d' of the strip are then turned
down and folded over the edge of the glass, as shown in Figure 3. The double
thickness of the covering having been worked into the grooves b of the sash bar
or rafter forms a channel or gutter e for rain water, and another channel or gutter f
for moisture resulting from condensation upon the inner surface. of the glass. The
sash bar or rafter is thus effectually protected. If desired the rib a and grooves b
may be coated with glue or cement before applying the sheet metal covering in
order to retain the latter and prevent the entrance and condensation of moisture
between the covering and the sash bar or rafter.
Having described the nature of my Invention, and the manner of performing the
same, I declare that what I claim as my Invention to be protected by the herein-
before in part recited Letters Patent is,-
The means of fixing glass in greenhouses and other structures consisting of a
sash bar or rafter grooved or rebated at the sides, in combination with a covering
strip of sheet lead or other material applied upon it and folded or doubled under
and over the edges of the glass, substantially as herein shown and described.
In witness whereof, I, the said Joseph Russell, have hereunto set my hand
and seal, this Twenty eighth day of September, A.D. 1881.
.