Improvements in Means for Operating Hinged Fanlights and for Locking or Securing them in Position.
Year: 1897

page_text: Date of Application, 25th May, 1897-Accepted, 16th Oct., 1897
COMPLETE SPECIFICATION.
Improvements in Means for Operating Hinged Fanlights and for
Locking or Securing them in Position.
I GEORGE BARKER Fellow of the Chartered Institution of Patent Agents of
77 Colmore Row Birmingham in the County of Warwick Consulting Engineer
do hereby declare the nature of the said invention as communicated to me from
abroad by Albert Hasenkamp of Altendorf on the Rhine, Altendorf-Cronenberg
Railway Station in the German Empire 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 the facilitating of the opening and closing
of the upper part of windows and of maintaining the same in any desired position.
One form of my invention is shewn upon the accompanying drawings upon
Fig. 1 is a front elevation of a window provided with such a device the upper
part of the window being maintained open or closed by means of a three cornered
key; the arrangement of the cords is shewn in dotted lines.
Fig. 2 is a side view of the same.
Fig. 3 is a vertical section through the device for securing the upper window.
which:-
Fig. 4 is a section on line x-x of Fig. 3 and
Fig. 5 is a section on line y-y of Fig. 3.
In the lower part of the window frame there is an opening o through which a
casingh projects this casing being secured to the plate p. To the plate 2 which
is sufficiently long to cover the opening o in the extreme lateral position of
the casing h, a casing consisting of the parts r s t is secured. Within the casing
h on the one side and the walls on the other side a pin f bears which is provided
with a three cornered part d; this pin serves for holding a roller m and also
two discs n which carry two eccentric clamping pieces k.
This device just described is connected to the upper part of the window by
means of a cord of any suitable material.
!
The one end of the cord is secured to the upper part of the window F on the
left and runs over the roller m¹ at the back of the window frame and then passes
to the roller m² to the roller m upon the pin f then back to the roller m³ which
is beside the roller m² then between the discs n n over the rollers m¹ m³ to the
right side of the window F where the other end of the cord is secured.
The opening and closing of the window is effected by sliding the plate ? to
the right or left. The extreme right hand position of the case h corresponds to
the closed position of the window whereas the extreme left position of the casing
corresponds to the completely open position of the window. The middle position
of the casing (Fig. 1) corresponds to the position shewn in Fig. 2.
In order to enable the fixing of the window in any desired position the clamp-
ing pieces are provided which by the turning of the pin f by means of the
key w forces the cord against the upper wall of the casing (Fig. 3) and thus
renders a movement of the window impossible.

page_text: The three cornered piece d is eccentric to the axis of the pin f and there is a
projection u upon the upper part of the casing which by twisting the key out
of the position shewn in Fig. 3 engages the projection 6 of the key and renders
the removal of the same impossible.
The key w can thus only be withdrawn when in the position shewn in Fig. 3
i.e. when the window is secured by the clamping of the cord v¹. The advantage
of this arrangement is that the securing of the window cannot be so easily
forgotten; but of course instead of the key a handle fixed to the pin f could be
used. In order to effect an easy opening of the window a spring a can be
arranged brought on the window frame which presses against the wings F and
thus at first helps to open the window.
For windows exposed to storms beyond the arrangement (shewn in Fig. 34
and 5) of clamps a further stopping device is desirable.
The apparatus described can be so combined that instead of two cords v vl
only one is used, on one side. This single cord would also be led over the
discs n and one of the rollers m* m² and secured to the pin f in any desired manner.
This construction is only applicable to narrow windows.
Having now particularly described the nature of my invention and in what
manner the same is to be performed I declare that what I claim is:-
A device for opening and closing or securing upper windows having a cord (¹)
securely connected to the window (F) which is led, if necessary with the help of
rollers (m³ m) over a clamping roller (n) and a guiding roller (m²) to the fixed
pin (f) carrying the rollers (") or the casing (prst) carrying the bolts and is
secured to the same whereby the opening and closing of the window which has
the tendency by reason of its own weight and of a spring (a) to open auto-
matically, is effected by moving the bolt (f) and its casing (st) in a slot (o)
in the one or the other direction, whereas the securing of the window in the open
or closed position is effected by the rotation of the clamping rollers (n) and the
resulting clamping of the cord (¹) between the rollers (n) on the one hand and
the wall on the other hand.
2. A device to open and close or secure upper windows as set forth in Claim 1
in which the cord (¹) if necessary with the help of rollers (m³ m²) is lead. over
the loose roller (m) upon the bolt (f) and is secured to the other side of the
window also.
3. The device for opening and closing or securing upper windows such
as claimed in Claim 1 in which the pin (f) is provided with a three or four
cornered part (d) eccentric to the axis of the pin, over which the the key which
serves for turning the clamping rollers (n) can only be passed or withdrawn
when the clamps are in the clamping position (Fig. 3), a projection (u) on the
casing (h) preventing the insertion or withdrawal of the key in all other positions.
Dated this 24th day of May 1897.
GEORGE BARKER.