A New or Improved Casement Stay.
Year: 1896

page_text: Date of Application, 12th Mar., 1896-Accepted, 6th June. 1896
COMPLETE SPECIFICATION.
A New or Improved Casement Stay.
I, CARL AUGUST RICHARTZ, Architect of Wormserplatz, Cologne on the
Rhine, Province of Rhineland and Kingdom of Prussia, Germany do hereby
declare the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement:-
The casement stay is intended to make it possible to fix the open window
casement by simply turning a thumbscrew at any angle to the window-frame.
The annexed drawing shows the casement stay in use; in Figs. 1 and 2 when
the window is shut in a side-view in a vertical section through the window ledge
and the lower casement frame, then in a view from the inside with a partial section
through the casement stay; further in Fig. 3 when the casement is open, while in
Figs. 4 and 5 the two chief parts of the casement stay are singly represented.
As these figures show, the casement stay consists of two rails in the form of the
arc of a quadrant A (Fig. 4) and B (Fig. 5).
The rail A of exactly the length of a quadrant arc, terminates on one side in a
casing C, which is let into the side-wall E of the exterior window-niche and there
attached. The other end of A is correspondingly let into the lower cross-piece F
of the window frame (the weather-board) so that both form equal surfaces.
the same time this end of A may be attached in F with screws, e.g. by means of the
loops marked with dotted lines in Fig. 4.
At
The second rail B which is somewhat more than the length of a quadrant arc, is
let in with its end b and attached by means of screws under the lower cross-ledge G
of the casement-frame, while the fore end lies free on the rail A. Through A there
passes in its whole length a slit a in which is guided a screw D secured in the fore-
end of B, when the window is opened and shut, A therefore slides over B, the
screw D sliding in a; if thereupon the thumb-screw m of the screw D is screwed
down the window casement will keep fast in the position, which it happens to
have.
Since the window-casement, because the side-wall H of the inner window-niche
recedes somewhat as compared with the hinge and pivot J, describes more than the
quarter of a circle, the rail B, as already stated, is more than the arc of a quadrant..
In order that this greater length of B may not strike, on the window being shut
against the wall E of the outside niche, the casing C is fitted at the end of A, into
which the end of B passes, as shown by the dotted lines in Fig. 3. At the same
time, there is at the fore end of B a slit C corresponding to the extra length of B.
as compared with the quadrant arc. In this slit the screw D can move in such a.
manner, that when the window is shut, as shown by dotted lines in Fig. 3, it goes.
into the back part of C, i.e. remains outside the casing c, then, when the window is
opened, it moves to the fore-end of C and is only now carried along, so that, when
the window is quite opened (Fig. 3, full lines) it remains at the end of a near the
weather-board F.
Of course, the rails A and B may be attached in another way, and instead of the
rails whole quadrant-pieces of sheet metal may be taken.
In the surface of the weather board F, if necessary, a cutting may be made
allowing the head d of the screw D to pass through.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
A casement stay, consisting of the part A with terminal casing c attached to the
outer window-niche and the part B attached to the window-casement sliding on A
by means of screw D in a slit-guide and adjustable by turning the thumb-
screw m.
Dated this 29th day of February 1896.
BERNH. BROCKHUES,
For C. Aug. Richartz.