Improvements in Lattice Windows and the like.
Year: 1899

page_text: Improvements in Lattice Windows and the like.
A communication by THE WESTFÄLISCHE METALL-ORNAMENTEN-FABRIK, ROB.
Osw. LEUTERT & Co., of Münster, Westphalia, in the Empire of Germany,
Iron Founders.
+
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., Agent for Foreign Patent
Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in the
County of Lancaster, 118, New Street, Birmingham, in the County of Warwick, and
322, High Holborn, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of this invention to be as follows:-
Hitherto lattice windows and the like have either been made of cast or wrought
iron or of zinc with wood or iron insertions.
Cast iron windows are disproportionately heavy, easily breakable, require
painting on order to be weather resistant and have a clumsy, inelegant appearance.
Moreover a separate pattern must be kept for each size and each design. Venti-
lating and opening flaps (or sashes) are only inserted with difficulty and are in
addition almost always not tight.
In wrought iron windows, the outer frames must be made mostly of wood whereby
the weather resisting qualities of the window of course suffers, and the iron
requires also a separate painting or coating. The difficulty has also always to be
overcome that a very great formation of rust is produced at the places where the
connection is made between the longitudinal and transverse bars, which rusting
when once it commences can no longer be checked and soon destroys the entire
frame. The formation of tight-closing ventilating flaps is also almost impos-
sible in this case, and the price of wrought iron windows is always high.
The drawbacks of windows made with zinc consist in that owing to the softness
of the material it is necessary to employ inner strengthening bars so that this
window also is very heavy and expensive.
All these drawbacks are avoided in the lattice window which forms the object
of the present invention..
In this window the cross bars and also the outer frame are made hollow and
without insertions, from drawn, stamped, galvanized or leaded iron or steel sheet
metal of any suitable cross section. The connection of the separate bars is pre-
ferably effected by the transverse or the longitudinal cross bars being provided
with incisions or having parts cut away at suitable distances apart, to corre-
spond with the shape or profile of the other crossing bar so that the latter can be
inserted through or fitted to the former. The secure mutual attachment of the
crossbars then takes place at their crossing places preferably by means of soldering.
Of course the fastening may be made by carrying the cross bars flat over one
another and then connecting them by soldering.
The outer frame may have a cross section of any suitable form but preferably
with a channel or gutter adapted to catch the water trickling down the window
panes and to carry it off by means of a pipe leading through the sash or frame to
the outside. This outer frame may be provided with incisions or have parts cut

page_text: away to receive the ends of the crossing bars which may be soldered or otherwise
secured therein.
The advantages which this improved form of window construction afforis
affords con-
sist first in extreme lightness of weight being obtained, because both cross bars
and sash or outer frame are quite hollow and yet the window has great strength
so that it does not suffer either during transport.or insertion in the building or
from a blow or shock. The windows are limited to no size or form and as the
material from which they are made is leaded or galvanised they require no paint-
ing like the windows at present in use. Ventilating and opening flaps may also
be made quite tight because the, hollow sheet, metal bodies have a certain flexi-
bility (elasticity). As already mentioned a device 'which carries off the internally
accumulating water, may be extremely easily added.
Finally the price of the window on this system is much lower than that of all
the other forms of construction at present known.
Doted this. 20th day of Novembór. 1900'
BLA
WM. P. THOMPSON & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Lattice Windows and the like.
A communication by THE WESTFÄLISCHE. METALL-ORNAMENTEN-FABRIK, ROB.
Osw. LEUTERT & Co., of Münster, Westphalia, in the Empire. of Germany,
Iron Founders.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., Agent for Foreign. Patent
Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in the
County of Lancaster, 118, New Street, Birmingham, in the County of Warwick, and
322, High Holborn, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
Hitherto lattice windows and the like have either been made of cast or wrought
iron or of zinc with wood or iron insertions.
Cast iron windows are disproportionately heavy, easily breakable, require
painting in order to be weather resistant and have a clumsy, inelegant appearance.
Moreover a separate pattern must be kept for each size and each design. Venti-
lating and opening naps (or sashes) are only inserted with difficulty and are in
addition almost always not tight.
In wrought iron windows, the outer frames must be made mostly of wood whereby
the weather resisting qualities of the window of course suffers, and the iron
requires also a separate painting or coating. The difficulty has also always to be
overcome that a very great formation of rust is produced at the places where the
connection is made between the longitudinal and transverse bars, which rusting
when once it commences can no longer be checked and soon destroys the entire
frame. The formation of tight-closing ventilating flaps is also almost impos-
sible in this case, and the price of wrought iron windows is always high.
The drawbacks of windows made with zinc consist in that owing to the softness
of the material it is necessary to employ inner strengthening bars so that this
window also is very heavy and expensive.
All these drawbacks are avoided in the lattice window which forms the object
of the present invention.
In this window the cross bars and also the outer frame are made hollow and
without insertions, from drawn, stamped, galvanized or leaded iron or steel sheet

page_text: metal of any suitable cross section. The connection of the separate bars is pre-
ferably effected by the transverse or the longitudinal cross bars being provided
with incisions or having parts cut away at suitable distances apart, to corre-
spond with the shape or profile of the other crossing bar so that the latter can be
inserted through or fitted to the former. The secure mutual attachment of the
crossbars then takes place at their crossing places preferably by means of soldering.
Of course the fastening may be made by carrying the cross bars flat over one
another and then connecting them by soldering.
A lattice window according to the present invention is shown in the accom-
panying drawings, in which,
Figure 1 shows a corner part of a window; and
Figure 2, a cross section on the line A B of Figure 1.
a is the outer frame which may have a cross section somewhat of the form
shown in Figure 2, but of course any other suitable form may be employed.
b and c are transverse and longitudinal cross bars respectively of which the latter c
have at the places d, which may of course be placed at suitable distances apart,
incisions or grooves of the same profile as the bars b so that these latter can be
passed through the vertical bars. The outer frame a is also provided at various
places, such, for instance, as at e and f on its inner wall with incisions or parts
cut away to suit the shape of the bars which are to be inserted and fixed therein,
as shown more particularly in Figure 2. The cross bars may be fixed in the outer
frame by soldering or the like.
The form of the lower part of the outer frame shown in Figure 2 is preferable
because here a gutter or channel adapted to catch the water trickling down
the window panes is provided, and to carry it off by means of a pipe g leading
through the sash or frame to the outside.
The advantages which this improved form of window construction affords con-
sist first in extreme lightness of weight being obtained, because both cross bars
and sash or outer frame are quite hollow and yet the window has great strength
so that it does not suffer either during transport or insertion in the building or
from a blow or shock. The windows are limited to no size or form and as the
material from which they are made is leaded or galvanised they require no paint-
ing like the windows at present in use. Ventilating and opening flaps may also
be made quite tight because the hollow sheet metal bodies have a certain flexi-
bility (elasticity). As already mentioned a device which carries off the internally
accumulating water, may be extremely easily added.
Finally the price of the window on this system is much lower than that of all
the other forms of construction at present known.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is:-
-
1. A lattice or like window characterised by both cross bars and outer frame
being made hollow and without insertions, from drawn, stamped, galvanised or
leaded iron- and steel sheet metal substantially as herein before set forth.
2. A form of construction of the described lattice or like window, in which one
row of cross bars is provided with incisions or has parts cut away of the shape
of the crossing bars, through which incisions or cut out parts the said crossing
bars are passed so that they may be easily fastened by soldering, substantially
as described.
Qu
A
1000