Improvements in Window Sash Fasteners.
Year: 1894

page_text: Date of Application, 14th July, 1894
Complete Specification Left, 22nd Oct., 1894-Accepted, 24th Nov.. 1894
PROVISIONAL SPECIFICATION.
Improvements in Window Sash Fasteners.
I, GEORGE WILliam Pollard, Valuer, of 4, Wendover Avenue, Aigburth,
Liverpool, in the County of Lancaster, do hereby declare the nature of this
invention to be as follows:-
This invention has for its principal object the prevention of the rattling which
almost invariably takes place in a high wind even when they are fastened. The
usual mode of endeavouring to prevent this is by making the fastening so that it
shall draw the two window sashes together. The only effect however is that the
entire combined window sash rattles in its frame instead of the single sash, unless
indeed the sashes grip the centre bead very well, which is not usually the case and
which under the best conditions end in loosening the centre' bead, in which event the
rattling continues as before.
Now my invention mainly consists in an alteration in the form of the ordinary
hasp in such manner that it shall press the two sashes apart from each other. I
form a spring crank and a guard very similar to the ordinary ones, but instead of
the crank simply passing over the guard or having a dependent piece outside the
guard in order to force the guard towards the pivot and thus tighten up the two
frames together, I form the crank with a dependent piece inside the guard and form
the guard wedge shaped or excentrically so that this dependent piece shall press
harder and harder against the guard in exact proportion as it is brought nearer the
terminal stop on the guard; by this means the two sashes are pressed apart with
great force. The pressure thus exerted gives sufficient friction on the crank to
prevent it from being opened by inserting a blade between the two sashes and
pressing upon it. As however under some circumstances this friction might not be
enough for special burglar proof fastenings, I employ either a spring catch on the
guard or bolt passing into a notch in the other, or a screw on the one passing into
the other, or I place a simple spring catch on the guard or other part so that when
the crank has passed over it, it will rise up and prevent the return of the crank,
unless it be separately forced down, or I may arrange the base plate of the guard with
an upward or outwardly projecting flange sufficiently wide to cover over the portion
of the plate and the other part, and the whole of the intervening crack, or place
a projection on the guard or guard plate immediately under the crank when in its
fastened position so that any blade brought to bear on the crank will also come in
contact with this abutment and thus stop further action; other forms of stop such
as pin or peg in a hole can also be adopted.
Dated the 13th day of July 1894
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.

page_text: I, GEORGE WILLIAM POLLARD of 4 Wendover Avenue, Aigburth, Liverpool
in the County of Lancaster, Valuer 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 for its principal object the prevention of the rattling of
window sashes which almost invariably takes place in windy weather even when
they are fastened. The usual mode of endeavouring to prevent this is by making
the fastening so that it shall draw the two window sashes together. The only
effect however is that the entire combined window sash rattles in its frame instead
of the single sash.
Now my invention mainly consists in an alteration in the form of the ordinary
hasp in such manner that it shall press the two sashes apart from each other.
In the accompanying drawings,
Figure 1 is a side view of the fastener, showing the sash rails in cross section,
Figure 2 a plan,
Figure 3 the crank showing dependent piece inside.the guard,
Figure 4 the spring for the crank; and
Figures 5 and
modifications.
Referring to Figures 1, 2 and 3, I form a spring crank A, and a guard B very
similar to the ordinary ones, but instead of the crank simply passing over the guard
or having a dependent piece outside the guard in order to force the guard towards
the pivot and thus tighten up the two sash frames together, I form the crank A
with a dependent piece a inside the guard B, and form the guard B wedge-shaped
or eccentrically, so that this dependent piece a shall press harder and harder against
the guard B in exact proportion as it is brought nearer the terminal 6 of the guard.
By this means the two sliding sashes C and D are pressed apart with great force.
The pressure thus exerted gives sufficient friction on the crank A to prevent it from
being opened by inserting a blade between the two sashes and pressing upon it. As
however under some conditions this friction might not be enough for special
burglar proof fastenings, I employ a simple pin or peg E which will fit into a hole
in the guard B, so that after the crank has passed over the hole the pin can be fitted
in to prevent the return of the crank until it is taken out again. Other forms of
stop may be used for preventing the return of the crank, such for example as the
device shown in Figure 6 in which the knob G is adapted when required to screw
into or otherwise engage the plate g. It is obvious that instead of using the
crank A, a distending screw A may be used, as shown in Figure 5. This is mounted
in the nut F, which is fixed to one of the sashes, and the guard B is formed for the
screw to press against. By turning the screw, its end enters the guard B and
presses the two sashes apart with considerable force to prevent rattling, at the same
time locking the two sashes so that they cannot be opened. The adjacent faces of
the sashes may be made as shown to prevent draught, or in cases where ventilation
is required they may be made sloping or in the ordinary manner.
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 1
claim is :-
:-
1. The improved appliances or fittings for window sashes to prevent them
rattling, which consist in a guard or stop fixed to the rail of one sash, and a crank
arm or distending screw fixed to the adjacent rail on the other sash, these latter
being so arranged that when turned they press against the guard or stop, and force
the two sashes apart substantially as described.

page_text: 2. The improvement in window sash fasteners, which consists of a spring crank
and a guard somewhat similar to the ordinary ones, but instead of the crank simply
passing over the guard or having a dependent piece outside the guard in order to
force the guard towards the pivot and thus tighten up the two frames together, the
crank is formed with a dependent piece inside the guard, and the. guard formed
wedge shaped or eccentric, whereby this dependent piece will press harder and
harder against the guard in exact proportion as it is brought nearer the terminal
of the guard.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, Nottingham, and London,
Patent Agents.