An Improved Window Fastener.
Year: 1894

page_text: Date of Application, 15th Sept., 1894
Complete Specification Left, 19th June, 1895-Accepted, 3rd Aug., 1895
PROVIDIUNAL DE MOITIUATION.
An Improved Window Fastener.
I, JOHN KENNEDY, of 15 Meadow Place, Edinburgh, in the County of
Midlothian, North Britain, Builder's Clerk, do hereby declare the nature of this
invention to be as follows:-
:―
This invention relates to an improved window fastener. The object of the
invention is to enable the sashes to be partly opened, with security at the same
time, that is to say, so that the sashes cannot be opened wide from the outside.
I provide the one side of the upper sash with an upright strip of wood or metal
containing a groove. Within the groove are stops arranged at different intervals
along the strip, which stops fix the height to which the sash can be opened as
desired.
Upon the top or level of the lower sash is a fastening appliance having a catch
which falls into the aforesaid groove of the strip on the upper sash.
The fastening appliance may be constructed as a narrow box which contains a
pivotted lever of T shape.
The longer arm of the lever projects out from the fastening appliance so that it
can be operated at the inside of the room only. The other or short arm of the
lever has the said T piece. Each of the said T pieces is connected to a horizontal
sliding bolt and the arrangement is such that as the lever is raised the upper bolt
is shot out into the groove of the strip and simultaneously the lower bolt is
withdrawn.
When the lever is in its straight or horizontal position, the sashes are locked if
the two bolts have been so worked that a stop has been caught them. It will
thus be seen that if the lower sash pushed up so that a stop, say in the middle of
the strip, has been caught between the catches, the upper sash can be opened from
the top of the window by pulling down the lower sash. I may so arrange some of the
stops that they are held in position by springs, the arrangement being such that
the catches can slip over the stops in one direction but be held by the stops in the
other direction.
The fastener on the lower sash whilst sliding freely up and down the groove on
the upper sash, may be held in close contact with the groove by any convenient
dovetailed arrangement, so that the two sashes are kept in close contact.
In order to prevent any possibility of the stops being pushed back, I provide the
long arm of the lever with a stop so that when, say the lever is raised so as to
project out the upper bolt, the stop is in contact with the other end of the bolt, and
the same arrangement with regard to the lower bolt when the lever is depressed.
Dated this 17th day of September 1894.
JOHNSONS,
115 St. Vincent Street, Glasgow, Petitioner's Agents.

page_text: An Improved Window Fastener.
1, JOHN KENNEDY, of 15 Meadow Place, Edinburgh, in the County of
Midlothian, North Britain, Builder's Clerk, 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 an improved window fastener and has for its object to
provide or construct a fastener which will enable the sashes to be partly opened,
with security at the same time, that is to say, so that the sashes cannot be opened
wide from the outside.
In carrying out my said invention, I provide the one side of the upper sash with
an upright strip or guide of metal or other material containing a groove. Within
the groove are stops arranged at intervals along the strip, which stops fix the
height to which the sashes can be opened. Upon the top or level of the lower
sash I fix a fastening appliance having one or more catches which work in the
groove of the strip and engage with the desired stop therein.
But in order that my said invention may be more readily understood and easily
carried into effect, I will proceed to describe it with reference to the accompanying
drawings.
Figure 1 is an elevation looking from the inside and Figure 2 a sectional
elevation of part of a window showing my improvements. And
Figure 3 is a plan of a form of fastener.
Referring to the said drawings I screw or otherwise attach to the one side of the
upper sash A an upright strip or guide B of metal or other material having a
groove 6 formed in it; a being the rounded or moulded portion of the said sash.
Within the said groove b I arrange a series of stops C, C', the lower one C being
preferably a spring-actuated sneck stop as shown; said stops C, C₁ being arranged
at any desired interval within the groove b, so as to fix the height to which the
sashes can be opened.
Upon the top or level of the lower sash D screw or otherwise attach a fastening
appliance, which may be constructed as a narrow box E containing a pivotted
lever F of a T shape and catches G, G' which work in the groove b of the strip B
and engage with one or other of the stops C, C'.
The longer arm of the pivotted lever F projects out from the box E, in such
a manner, that it can be operated on the inside of the window only. The other or
short arm of the lever has the said T piece, the ends f2 of which are connected
to the sliding bolts or catches G, G¹, in such a manner, that on the arm of the
lever F being raised the upper bolt G is shot out into the groove b, of the strip B,
and simultaneously the lower bolt G', is withdrawn, and vice versa.
When the lever F is in its straight or horizontal position, the two sashes A. and D
are locked if the two bolts G and G₁ have been so worked that a stop C, or C¹,
has been caught by them. It will thus be seen that if the lower sash D is pushed
up and the fastener engaged with a stop in the middle of the strip B, the upper
sash A can then be opened from the top of the window by pulling down the lower
sash D.
The fastener on the lower sash D whilst sliding freely up and down in the
groove b of the strip B in the upper sash A is preferably held in close contact with
the strip B by means of any convenient dovetail arrangement H (as shown in
Figure 3,) or its equivalent.
In order to prevent any possibility of the bolts G, G', being pushed back too far
into the groove b of the strip B, I provide or form the box E with two stops e, so
that when the lever F is operated so as to project out a bolt it comes against one or
other of the said stops e and is therefore held in position.

page_text: In some cases if desired may form all the stops as spring actuated stops which
will permit of the bolts of the fastener to slip over the said stops in the one
direction, but be retained by the stops in the other direction.
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 :-
1st. The general arrangement, construction and combination of the various parts
constituting my improved window fastener, substantially as and for the purposes
herein before described and shown in the accompanying drawings.
2nd. In window fasteners, the combination of an upper sash strip or guide B
having a groove b and a series of stops C, C¹, with a fastener consisting of
a pivotted T shaped lever F and bolts or catches G, G¹, substantially as
hereinbefore described and shown in the accompanying drawings.
Dated this 18th day of June 1895.
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicant's Agents.