IMPROVEMENTS IN GLAZING THE ROOFS AND SIDES OF GREENHOUSES, RAILWAY STATIONS AND OTHER GLAZED BUILDINGS OR STRUCTURES
Year: 1884

page_text: I THOMAS WILLIAM HELLIWELL of Brighouse in the County of York,
Horticultural Engineer, do hereby declare the nature of my invention for
"IMPROVEMENTS IN GLAZING THE ROOFS AND SIDES OF GREENHOUSES, RAILWAY
STATIONS AND OTHER GLAZED BUILDINGS OR STRUCTURES," to be as follows:-
I employ a Bar made of Zinc, Brass, Copper or other suitable material for the
purpose of carrying the side edges of the glass, this har is provided with a
channeled shoulder or ledge on each side of it for the glass to lay upon, and also
a second channel below the first one to carry off any wet or moisture.
Each side of this bar is carried up above the thickness of the glass, and turned
over on to the glass to secure it in position.
These two sides of the bar being joined at the bottom, form a spring which
when compressed, previous to insertion of the glass springs back, and secures the
glass, and as an additional security to hold the glass and to prevent movement of the
square, I insert a cap of zinc, brass, copper, or any suitable material of a wedge, or
oval trough shaped form, which when introduced between the two sides, presses them
out against the edge of the glass, and thereby secures it, the said cap having
protuberances on its wedge shaped sides, which prevent it coming out, and the cap
is provided with additional edges which press upon the top of the glass.
This cap may be in short pieces or continuous, and the same object for which
the cap is used may be obtained by the insertion of bolts with cam or oval shaped
heads to force the two sides of the said bar apart, and thereby hold them.
Where it is desirous to glaze two thicknesses of glass to maintain an even
temperature within the structure, I provide a second channelled shoulder on each
side of the bar above the bottom channel already named, on which I place the
inner glazing and secure the same to its place by strips of inetal, or other suitable
substance, screwed or bolted to the bar." As these bars may be made any depth,
the inner and outer glazing may be placed any distance apart that is desired, and
where necessary, wood, or other stiffening pieces may be inserted within or along
the said bars in conjunction and in combination with the glazing_bar described
in previous Letters Patent granted to me on the 13th day of February 1879
Nuinber 570.

page_text: By the adoption of the above improvements, glazing can be applied with either
single, or double sheets of glass without the use of putty, paint, screw down bolts,
pins or cotters, preventing the necessity of any of the external metal being pierced
with holes for fastners, while full play is given for all expansion and contraction.
11 1
1000
I, THOMAS WILLIAM HELLIWELL of Brighouse, Yorkshire, Horticultural
Engineer, do hereby declare the nature of my invention for "IMPROVEMENTS IN
GLAZING THE ROOFS AND SIDES OF GREENHOUSES, RAILWAY STATIONS, AND OTHER
GLAZED BUILDINGS OR STRUCTURES," and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My Invention has reference to the system of glazing without putty; and for
this purpose, I employ a bar made of zinc, brass, copper, or other suitable material
for the purpose of carrying the side edges of the glass; this bar is provided with
a channelled shoulder or ledge on each side of it for the glass to lay upon, and also
a second channel below the first one to carry off any wet or moisture.
In order that my Invention may be better understood, reference is made to the
accompanying sheet of Drawings which illustrate my improved system of glazing,
wherein Fig 1 shews section of glazing bar A having channels a and b on each
side thereof, the upper one of which is for receiving the edges of the glass and for
carrying away water which may enter therein. It will be observed that this
glazing bar is made from one piece of metal, joined at the bottom and open at the
top, the two ends e being turned over on to the glass B to prevent it moving up.
The two sides of the bar being joined at the bottom, form a spring, which on being
compressed previous to insertion of the glass, springs back again and binds against
the edges of each sheet of glass and secures then in position; but as an additional
security to hold the glass and to prevent movement thereof, I insert between the
upper ends of the open bar, a metallic cap C, which, when introduced makes the
opening in the bar wider, and presses out the sides thereof against the edges of
the glass, thereby more effectually securing it, the protuberance & being formed on
the cap to prevent its coming out. Instead of employing the cap C for opening
the mouth of the bar and forcing the sides thereof against the glass, I may employ
bolts D, as shewn in Fig 2, where it will be seen, the bolt has a cam or oval shaped
head c, which is introduced into the opening of the bar lengthwise, and on the
bolt being turned a quarter of a revolution, the head e will be forced against the
sides of the bar, causing them to open out and be pressed against the edges of
the glass, thereby holding them in position. Plan view of this bolt is shewn in
Fig 3.

page_text: When it is desirous to glaze two thicknesses of glass to maintain an even
temperature within the structure, I place a sheet of glass on the bottom channelled
shoulder 6 as well as on the upper shoulder a (see Fig 4). The upper sheet of
glass is kept in position by a cap F and bolt G as fully set forth in prior Letters
Patent granted to me February 13th 1879 N° 570, the lower sheets of glass being
kept in position by strips of metal or other material H, the said strips being
secured in position by screws j, which pass through the sides of the bar into the
wood stiffening bar I.
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
Firstly. The combination of the bar A and cap C having a protuberance d
thereon formed and employed in the manner and for purposes substantially as set
forth and shewn in the drawings.
Secondly. The employment of the bolt D for forcing the sides of the bar A
against the glass, substantially as herein shown and described.
Thirdly. The employment of two thicknesses of glass and the manner of making
them secure, substantially as herein shewn and described.
Dated the 20th
1004