IMPROVEMENTS IN METAL FRAMES FOR CASEMENT WINDOWS
Year: 1884

page_text: I THOMAS ELSLEY of N° 32 Great Portland Street in the County of Middlesex
Metal Worker do hereby declare the nature of my invention for "IMPROVEMENTS
IN METAL FRAMES FOR CASEMENT WINDOWS "and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
This invention has for its object improvements in metal frames for casement
windows.
I construct these frames of the forms indicated by the Drawings annexed. In
Figure 1 A shows in transverse section the fixed frame to be let into the stonework
of the window or otherwise fixed according to the circumstances of the case;
B shows a transverse section of the swinging frame which receives the glass.
The two frames are shown closed together in their proper relative position as they
are when the window is closed.
The frames are made from rolled bars by preference of steel, dovetailed and
brazed at the corners. The frames A and B are as will be seen primarily of L form
in section and the two frames close together completing a rectangle the faces being
flush both front and back. Each frame also has an inner rib guarding the joint
and forming a rabate or angular recess to receive the edge of the other frame so
that the frames go together with two close rabated joints well calculated to exclude
wind and water.
The swinging frame B also has ribs consisting of prolongations of the front and
back faces and these serve to receive between them the glass and the putty by
which the glass is kept in place.
The sectional forms adinit of some variation; thus the two sides of the frames A
and B may advantageously in some cases be brought more closely together in the
manner represented in Figure 2. The swinging frame B is thus adapted to receive
a larger glass and it is rendered lighter in appearance whilst at the same time tho
rabated joints where the frames close together are retained both at the front and
back. Also in some cases it is advantageous to provide the frame A with ribs
where it abuts against the sides of the window aperture so as to advance it
somewhat from the stone work.
The swinging frame is jointed to the fixed frame by means of a conical steel pin
carried by a bracket fixed to the former at the lower corner; and this pin is
received into a bronze socket secured to the lower corner of the fixed frame. The

page_text: joint at the top may be similar but as it is the lower joint which is mainly exposed
to strain I prefer to braze the lower brackets to the frames and to attach the upper
brackets by screws which may be removed for separating the frames for transport;
however make no claim in respect to the way in which the swinging frame is
jointed to the fixed frame.
The swinging frame may open either inwards or outwards as when closed
together they present a plane surface on both faces.
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 -
(1). Metal frames for casement windows substantially as herein described.
(2) Metal frames for casement windows fitting together with rabated joints both
at front and back substantially as described.