Improvements in Means for Fastening and Adjusting Casements.
Year: 1896

page_text: Date of Application, 21st Feb., 1896--Accepted, 11th July, 1396
COMPLETE SPECIFICATION.
Improvements in Means for Fastening and Adjusting Casements.
1, RICHARD STRAUWALD, of Am Felde 48, Altona Ottensen, near Hamburg
in the Empire of Germany, Technical 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:-
This invention relates to casements and consists in improved means for securing
such casements at desired angles of opening.
In the annexed drawing
Fig. 1 is a sectional elevation on line x x Fig. 2.
Fig. 2 shows the apparatus in plan view, the casements being shown in horizontal
section and the inner window shelf, or sillboard removed.
Figs. 3 and 4 are detail views.
Fig. 5 is a sectional view of part of Fig. 2.
The two casements 6 6' which may be hung on hinges a and be shaped to engage
together at their meeting edges as illustrated in Fig. 1 are each provided with a
curved toothed bar e whose axes of curvature lie respectively in the hinges a. The
teeth of the bar care on the inside of the curve and are shaped as shown, and the
ends of the rods d, d engage over the bar e into the recesses between the teeth of
the said bars which happen to be in line with the bars d.
The two horizontal bars d, d, meet together at the centre where they are
provided with tongues lying over one another. Two other tongues e, e project
perpendicularly and horizontally from the bars d, d, respectively and serve as
abutments for the ends of the spiral springs f, f, which thus tend to draw the
bars d, d, together and cause the ends of the latter to engage in the recesses of the
bars c.
The bars d may be thrust apart by a pressure on the knob g at the end of the
sliding bar h, the inner end of which is connected to the bars d d respectively by
pivoted thrust rods i i. Either or both sashes can thus be opened by hand as far
as desired and on release of the knob g will be held in the position given to it or them
by the engagement of rods dd with the toothed bars c c.
In order to dispense with a bolt and to obtain a secure fastening sash ¹ is made
so that it can be locked as follows:-
A vertical round rod k having at its lower end a four sided block or foot k¹ by
means of which it may be held from revolving by the tongues e, e is fixed upon the
sash and extends to the top of the sash where it is provided with arm lending in
a knob m which is adapted to enter and be secured in an angular slot o in a plate n
Fig. 2 attached to the window frame.
As the rod k or its four edged foot does not enter between the tongues e until
the window is completely closed, the rod k when its button m enters the first part of
the slot o (see Fig. 3), is free to make the rotary movement of 90° which is
necessary to turn it into the position shown in Fig. 4. The button m has then
entered into the second part of the slot o lying parallel to the wall and thus keeps
the window closed also at the top, as the rod & held by the tongues e can no longer
rotate.
The handling of the whole mechanism is extremely simple and convenient since
it can be all operated from inside the window frame, and the casements can be
fixed at a variety of convenient angles to the house front.

page_text: Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In casement fasteners and adjusters.
1. The combination with the casement of the curved toothed bars c c having
recesses in their concave edges, the bars d, d, adapted to be drawn together by
springs such as ff and a push rod h g connected by thrust bars ii with the rods dd,
substantially as and for the purpose set forth.
2. The combination with the bars d d having lugs e e and adapted to engage with
toothed curved bars on the casements, of a vertical rod k rotarily attached to one
of said casements, the said bar k having a squared foot and at its upper end an arm l
with knob m adapted to be moved to engage with a slot o in the window frame,
substantially as described.
Dated this 21st day of February 1896.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, W.C., Agents for Applicant.