Appliance for the Protection of "French" and similar Windows.
Year: 1898

page_text: COMPLETE SPECIFICATION.
Appliance for the Protection of "French" and similar Windows.
I, CAESAR KASTENS, of 22, Muhlenstrasse, Hamburg, in the Empire of Germany,
Apothecary, 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:-
-
This invention has reference to an appliance, the object of which is to prevent
"French" and similar windows being unintentionally closed violently by wind,
etcetera, and thus avoid the breaking of the glass panes.
The invention is illustrated in the annexed drawings, in which Figure 1 is a
view of the window protecting appliance as seen from above; and Figure 2 is
a side view of same, which also shews, diagrammatically, one method of applica-
tion to a "French" window.
The appliance comprises a plate a screwed onto the window, and carrying a
bent lever c, which is hinged to the plate; and a guiding device b attached to the
side of the window.
The lever is normally pressed in one direction by means of a spring h
(Figure 2), and at its front end carries two small side pieces c¹ and c².
The guiding devices 6 consists of two sides or cheeks i mounted upon a plate.
The two cheeks i are just far enough apart to allow the lever c to slide between
them; whilst the two side pieces of the lever c slide upon the inclined plane
formed by the edges of the cheeks.
A hollow casing m is secured to one of the cheeks i, and a sliding bolt d is
passed through same. One end of the movable bolt d is normally kept between
the cheeks by means of a spiral spring disposed within the casing m."
is
The outer extremity of the bolt d possesses a lateral bent arm f. A lever 9
journalled in suitable bearings o and p at the outer surface of the cheek ; and
said lever g has its two extremities bent upwards; one, q, serving as a handle
for actuating the lever, and the other, r, for gripping behind the curved arm f
of the bolt d. The extremity r is doubly bent, the end portion standing at right
angles to the handle q.
In action, when the window is opened the side pieces at the end of the lever c
move along the inclined plane formed by the cheeks until they reach the top
of same.
Here they slip off, and the lever c falls between the cheeks; and then
by pulling the handle q forward, the extremity r of the lever g is pressed against
the curved arm f and moves the bolt d sufficiently in the casing m to permit the
lever c to pass same and rest in the cut-away portion of the cheeks i. Upon re-
leasing said handle g the spiral spring in the casing m forces back the bolt d
which is now situated above the lever c between the cheeks ii, thus locking said
lever c in its position. When it is desired to release the lever, by again pulling
the handle the bolt d is pressed from between the cheeks ii back into the
casing. m, and the lever c is free to be disengaged.
Having now particularly described and ascertained the nature of this invention,
and in what manner the same is to be performed, I declare that what I claim is:―
1. An appliance for the protection of windows, consisting of a hinged or mov-
able lever attached upon a support and acted upon by a spring, and provided with

page_text: projections or side pieces at its end, so arranged as to slip in behind a fitting
with inclined planes, and a cut-away part or its equivalent at its back, and lock-
ing mechanism, so that when the window is opened it cannot be closed again
until released; substantially as set forth.
2. The appliance for the protection of windows, set forth with reference to
and shewn in the drawings.
OL
1000
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.