Year: 1897

page_text: I, GRIFFITH THOMAS, of Croft Cottage, Treboth, Near Swansea, Sawyer, do
hereby declare the nature of this invention to be as follows:―
This invention relates to an improved sash fastener, which when locked cannot
be opened by anyone who has not the special code.
On the inner sash meeting-rail is fitted a flat case or box just deep enough to
contain a sliding plate bolt. This bolt is furnished with a projecting tongue which
takes into a recessed plate screwed to the outer sash. The larger or plate portion
of the bolt has two, three, five or more circular perforations each perforation
being complete with the exception of a little tongue left projecting from the margin
of the perforation to the centre of it. All these little tongues are parallel to one
another and all point in exactly the opposite direction to that in which the bolt
moves in fastening the window. On the outer surface of the box or case various
clock-face dials are inscribed having moveable hands or pointers. These dials
correspond to the perforations in the sliding plate bolt underneath. Each pointer
communicates with a disc of metal which is placed within the perforations in
the bolt aforesaid, these discs are provided with notches sufficiently deep to receive
the tongues left projecting from the margin of the perforations. In order to un-
fasten the window it is necessary that each little disc is turned so that its notch
comes exactly opposite to the tongue of the perforation. The pointers on the
outside are not placed parallel to the notches so that it is necessary to know
precisely at what angle each pointer must be set in order that its disc may be
turned so as to place the notch therein opposite to the tongue in the perforation.
In operating the fastener the bolt is shot by means of a knob working in a slot
in the cover plate, and the tongues have now all come out of the disc notches, the
pointers may now be turned at random and the bolt cannot possibly be put back
until the notches are restored to their original positions, which is only known to
the person who has worked the bolt.
To prevent the sashes from rattling a spring is attached to the plate on the
outer sash having a hook to draw over the knob operating the bolt on the inner
sash. This spring is preferably fastened parallel to the glass and has the hook
attached to the middle of the spring.
1007

page_text: I, GRIFFITH THOMAS, of Croft Cottage, Treboth, Near Swansea, Sawyer, 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 follow-
ing statement:-
-
This invention relates to an improved window-sash fastener which when locked
cannot be opened or unlocked by anyone without the special code.
On the inner sash meeting rail is fitted a flat case or box containing a sliding
plate bolt. The said plate is formed with a projecting tongue for engaging with
a recessed plate fixed to the outer sash, and, also, with two, three, five or more
ciroular perforations each of which is formed with a small tongue extending from
the circumference to near the centre thereof. These tongues are all parallel to
one another and point in the opposite direction to that in which the bolt moves
in fastening the window. The outer flat surface of the case or box is marked
with clock-face dials fitted with moveable hands or pointers, which dials cor-
respond in position to the perforations in the sliding plate bolt underneath. The
axis of each pointer is connected with a metal disc lying within the said perfora-
tions, and these discs are formed with notches of sufficient depth and width to
receive the projecting tongues of the said perforations.
For the purpose of unlocking the window each of the discs must be turned by
means of the pointers until its notch comes exactly opposite or in a line with the
tongue of its respective perforation. The pointers are not fixed parallel to the
notches,so that it is essential to know precisely at what angle each must be set,
or to what figure on its dial it must point, so as 'to bring the notches exactly
opposite the tongues. The bolt is shot or locked by means of a knob working in
a slot in the cover plate, which action disengages all the tongues from the notches
in the discs thus permitting the latter being turned at random by the pointers
and so preventing the drawing back of the plate bolt for unlocking the sashes
until the notches are again restored to their original positions.
To prevent the sashes rattling a spring is attached to the plate on the outer
sash and is fitted with a hook which is caused to engage with the knob operating
the sliding bolt.
In the accompanying sheet of drawings Fig. 1 is a plan of my improved sash-
fastener, Fig. 2 is an inside view of the case or box fixed to the inner sash, and
Fig. 3 is a cross section on the line X X of Fig. 1. a is the case or box fixed to
the meeting rail S of the inner sash, and b is the plate bolt sliding between
guides a therein. 61 is the tongue formed on the plate b to engage with the recess
or slot c¹ in the plate c fixed to the outer sash S. d are the perforations formed
in the plate.b and d' the tongues extending all in the same direction therein.
the clock-face dials on the upper surface of the box a and e¹ the hands or pointers
fitted thereto the axes of which are connected to the discs f lying within the per-
forations d. f are the notches in the said discs, for receiving the tongues
e are
.
In order to unlock the sashes the notches, fl must be brought to coincide with
the tongues for which purpose the pointers e¹ are each turned to a particular
figure on the dials before agreed upon as a special code which may be that repre-
sented in Fig. 1. The plate-bolt & can then be drawn back by means of the knob g
working in the slot g' in the cover-plate of the box.a the tongues d' entering the
notches of the discs f as shown in Fig. 2.
The window. can then be locked again at any time by pushing out the plate b
so as to engage the tongue 61 with the recess or slot c' in the plate c on the outer

page_text: sash S₁ as shown in Figs. 1 and 3 and be secured in its locked position by turning
the pointers el at random so as to bring the notches f¹ out of line with the tongues d
as shown separately in Fig. 4.
h is the spring fitted to the plate c of the outer sash for the purpose of preventing
rattling, the centre of the spring being provided with the pivoted hook i which is
passed over the shank of the knob g thus drawing the sashes together.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
(1) In sash fasteners for windows the application of clock-face dials and pointers
for the purposes of locking and unlocking such fasteners according to a special
code substantially as herein described.
(2) In sash fasteners for windows, the combination of the case or box a fitted
with guides a¹ the plate-bolt 6 formed with a tongue b¹, the plate c having a
recess or slot c¹, the perforations d provided with tongues d', the clock face dials e
fitted with pointers e¹, the discs f formed with notches f¹, the knob g, slot g¹,
spring h, and hook i, all arranged and operating substantially as described and
for the purposes specified.
(3) The improved sash-fastener for windows substantially as described and shown
in the drawings.
Dated this 30th dow of Novom han 1007
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.