An Improved Window-fastener.
Year: 1891

page_text: Date of Application, 22nd July, 1891-Accepted, 22nd Aug., 1891
COMPLETE SPECIFICATION.
An Improved Window-fastener.
I, GEORGE SAMSON of Fawkner Street South Yarra, near Melbourne in the
Colony of Victoria, Gentleman, 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 been devised for the purpose of providing a simple and
effective window fastener, which is partly automatic, and cannot be opened from
the outside.
It consists in a window fastener wherein two bolts are arranged at right angles
to each other, and are employed-the one (which is the larger) for securely con-
necting together the upper and lower sashes, and the other (which is the smaller)
for locking said larger and main bolt in either its engaged or disengaged position,
as may be required. Said main bolt passes through the top rail of the lower sash,
and when the window is locked fits into a recess in the lower rail of the upper sash.
It is provided with a spiral spring whose tendency is to always impel said bolt into
its projected or locking position. It is also provided with two holes large enough
to receive the end of the locking bolt, and in such a position as to lock the main
bolt in either its engaged or disengaged positions. This locking bolt is also fitted
with a spring which tends to force its end into one or other of the holes or recesses
in the main bolt for the purpose already described.
Referring to the accompanying drawings,
Figure 1 represents a front elevation of part of the meeting rails of a pair of
window sashes, showing same fitted with my improved window fastener.
Figure 2 is a horizontal section on line 2-2, Figure 1.
Figure 3 is a vertical transverse section on line 3-3, Figure 1, showing the
main bolt in elevation.
Figure 4 is a similar view to Figure 2, but showing my improved fastener in its
locked position, whilst the former figure shows it unlocked.
Figure 5 is a similar view to Figure 2, but showing the locking bolt fitted with
a recess or key-hole into which the end of a key might be inserted to enable it to
be drawn back.
Figure 6 is a front elevation of the arrangement of window fastener shown in
Figure 5.
The same letters of reference indicate the same parts in all the figures.
A represents the main sliding bolt which, as herein before mentioned is passed
through the upper meeting rail of the lower sash, and can be moved into engage-
ment with a recess or socket a formed in the lower meeting rail of the upper sash.
B represents a coiled spring which is fitted around the sliding bolt A, and always
tends to force it into its locked or projected position. a¹ represents the knob or
handle whereby the bolt A can be withdrawn when required, whilst represent
two holes or recesses formed in said main bolt A. and adapted to receive the end of
the locking bolt C, as clearly illustrated in Figures 2 and 4. This said locking
bolt C is mounted in suitable bearings, and can be slid to and fro, so that it can
readily be put into or removed out of engagement with the slots or recesses c-c¹ in
the main bolt A. It is provided with a small knob or handle to enable it to be
drawn back, whilst a spiral spring c³ arranged around it always tends to keep it in
engagement with one or other of the recesses c_c².
Plates a² may be let into the adjacent sides of the meeting rails of the sashes,
each of said plates being formed with a hole through which the main bolt A can
pass as shown.
If preferred, the knob c² and the slot in the meeting rail which allows of the
De

page_text: requisite movement being given to said knob can be dispensed with, a key and a
key hole being provided in lieu of them as an additional safety.
The manner of employing my improved window fastener is as follows: In order
to unfasten the window the locking bolt C is drawn back out of engagement with
the main bolt A, when the latter can be drawn back out of engagement with the
lower meeting rail of the upper sash and can then be retained in such disengaged
position by releasing said locking bolt C and allowing it to engage in the recess c
in the bolt A, when my fastener will be in the position illustrated in Figure 2 and
the window unfastened. When it is required to fasten said window, it is merely
necessary to withdraw the locking bolt C out of engagement with the main one A,
when the latter will at once spring forward into engagement with the recess a in
the lower meeting rail of the upper sash by reason of the spring B. If the locking
bolt C be then released it will engage in the second recess in the main bolt A
and will retain it in its projected or locking position, as clearly illustrated in
Figure 4.
The arrangement illustrated in Figures 5 and 6 is substantially the same as that
herein described, except that the locking bolt C is provided with a small hole or
recess d into which the correspondingly shaped end of a key D can be inserted so
as to enable said locking bolt C to be readily drawn back out of engagement
with the main bolt A, the object of employing a key-hole d and key D instead of
the knob being to more effectually prevent said locking bolt from being drawn
back from the outside of the window.
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 :-
The herein described window fastener consisting essentially of a main bolt (such
as A) provided with a spring (such as B) and recesses (such as c-c) combined
with a locking bolt (such as C) provided with a spring (such as c³) and arranged
at right angles to the main bolt, substantially as and for the purposes herein
specified and as illustrated in my drawings.
Dated this Twelfth day of June One thousand eight hundred and ninety-one.
GEORGE SAMSON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.