A NEW THREE BAR SYSTEM OF GLAZING, APPLICABLE TO GREENHOUSES AND GLAZING GENERALLY to be as follows:
Year: 1884

page_text: I, ROBERT STEVENS of Bromley, in the County, of Kent, Horticultural Builder
do hereby declare the nature of my said Invention for "A NEW THREE BAR SYSTEM
OF GLAZING, APPLICABLE TO GREENHOUSES AND GLAZING GENERALLY to be as
follows:
:
"
The advantages of this system of glazing are economy and a great saving of
labor in preparing the wood work for the glass. The old system of rebating is
entirely dispensed with and the bars require simply a flat surface upon which the
sheets of glass rest. These bars may be tapered upon under side to give a lighter
appearance to the whole. I place a layer or bed of putty upon the bearing surface
of these bars and then place upon them the glass. Each Sheet of Glass rests upon
three bars, having its side edges borne by the two outer (of the three) bars and
the middle one (of the three bars) running down the centre of the sheet of glass,.
affording a firm support thereto. The lower edge of each pane of glass overlaps
the upper edge of. the sheet or sheets of glass in the row beneath it. By this
arrangement no leakage can take place, the edges of the glass only being flush at
the sides where they are supported by the bars or rafters and their layers of putty;
through which no moisture can pass.
The bed of putty aforesaid, when dry, will be found sufficient fastening to hold
the glass in position, but for its security whilst the putty is drying I drive a small
copper tack into the bar or rafter between the joints of the glass which at the
same time holds the bottom edge of square of glass above.
The whole of the woodwork is covered by the glass and consequently all outside
painting is dispensed with. This system of glazing is equally applicable to the
sides of Greenhouses and other Buildings and will be found of great advantage in
the construction of Photographic and other Studios, Picture Galleries and Skylights
in dwelling houses, or Workshops &c.

page_text: COMPLETE SPECIFICATION.
"
I, ROBERT STEVENS of Bromley in the County of Kent, Horticultural Builder
do hereby declare the nature of my said Invention for "A NEW THREE BAR SYSTEM
OF GLAZING, APPLICABLE TO GREENHOUSES AND GLAZING GENERALLY and in what
manner the same is to be performed, to be particularly described and ascertained
by the following statement, reference being had to the accompanying drawings,
that is to say :-
'
The advantages of this System of glazing are Economy and a great saving of
labor in preparing the wood work for the glass.
The old system of rebating is entirely dispensed with and the bars require
simply a flat surface upon which the sheets of glass rest. These bars may be
tapered upon the underside to give a lighter appearance to the whole. I place a
layer or bed of putty upon the bearing surface of these bars and then place upon
them the glass. Each sheet of glass rests upon three bars, having its side edges
borne by the two outer (of the three) bars and the middle one (of the three bars)
running down the centre of the sheet of glass affording a firm support thereto.
The lower edge of each sheet of glass overlaps the upper edge of the sheet or sheets
of glass in the row beneath it.
By this arrangement no leakage can take place, the edges of the glass only being
flush at the sides where they are supported by the bars or rafters and their layers
of putty, through which no moisture can pass. The beds of putty aforesaid when
dry will be found sufficient fastening to hold the glass in position but for its
security whilst the putty is drying I drive a small copper or other flat headed tack
into the bar or rafter at the lower part of the centre of each square between the
joints of the glass, which tack at the same time holds the bottom edge of square of
glass above.
In the first row of glass which projects on to gutter ordinary clips are used to
keep the glass in position until the putty sets.
The whole of the wood work is covered by the glass and consequently all outside
painting is dispensed with.
This System of glazing is equally applicable to the roofs and sides of green-
houses and other buildings and will be found of great advantage in the construc-
tion of photographic and other Studios, Picture Galleries and Skylights in dwelling
houses or workshops &c.
And in order that this my Invention may be more fully understood reference is
had to the accompanying drawings.
°
Figure 1 is a Section of my three bar System of glazing shewing the arrangement
of squares of glass a and tacks 6 upon the bars c.
Figure 2 is a plan of roofing on my three bar system of glazing and
Figure 3 is a transverse section of roofing glazed on my three bar system.
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
The general construction and arrangement of a new three bar system of glazing
substantially in the manner aforesaid, set forth and described.
Dated this sixth day of March 100.
For ROBERT STEVENS,
Horn & Son,
Patent Agents,
Surrey Chambers, 172, Strand, W.C.