IMPROVEMENTS IN WINDOW SASH FASTENERS
Year: 1879

page_text: LETTERS PATENT to Samuel Henry Soper, senior, of Sutherland House,
Hayward's Heath, in the County of Sussex, Gentleman, for the Invention of
"IMPROVEMENTS IN WINDOW SASH FASTENERS."
PROVISIONAL SPECIFICATION left by the said Samuel Henry Soper at
the Office of the Commissioners of Patents on the 26th April 1879.
SAMUEL HENRY SOPER, senior, of Sutherland House, Hayward's Heath, in the
County of Sussex, Gentleman. "IMPROVEMENTS IN WINDOW SASH FASTENERS."
My Invention relates to that class of sash fasteners in which a latch or arm turns
horizontally on a vertical axle fixed on a plate attached to the meeting bar of the
upper sash, and takes into a quadrant fixed on the plate attached to the meeting
bar of the lower sash, and consists in attaching by a joint to the free end of the
principal arm a short transverse arm, so that the latter may turn in a plane at right
angles to the length of the former, in order that when the fastener is closed, the
transverse arm may be turned down in front of the inner sash, so as to prevent the
I
fastener being opened while the transverse arm remains so turned down.
construct the joint connecting the two arms so that the transverse one can only
make half a revolution on its axis, videlicet, from vertically upwards, which is the
position it occupies when the fastener is open, to vertically downwards, when the
fastener is closed.
Near the free end of the transverse arm I fix the knob by which the fastener is
opened or closed, and which being fixed rigidly to the transverse arm, is used when
one is closing the fastener for the double purpose of drawing the principal
arm forward, and then turning the transverse arm down, and vice versa, when
opening it.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Henry Soper in the Great Seal Patent Office on the 20th
October 1879.
SAMUEL HENRY SOPER, senior, of Sutherland House, Hayward's Heath, in the
County of Sussex, Gentleman. "IMPROVEMENTS IN WINDOW SASH FASTENERS,"
My Invention relates to that class of sash fasteners in which a latch or arm turns
horizontally on a vertical axle fixed on a plate attached to the meeting bar of the
Price &dı

page_text: upper sash, and takes into a quadrant fixed on the plate attached to the meeting
bar of the lower sash, and consists in attaching by a joint to the free end of the
principal arm a short transverse arm, so that the latter may turn in a plane at
right angles to the length of the former, in order that when the fastener is closed,
the transverse arm may be turned down in front of the inner sash, so as to prevent
the fastener being opened while the transverse arm remains so turned down. I
construct the joint connecting the two arms so that the transverse one can only
make half a revolution on its axis, videlicet, from vertically upwards, which is the
position it occupies when the fastener is open, to vertically downwards, when the
fastener is closed. Near the free end of the transverse arm I fix the knob by which
the fastener is opened and closed, and which being fixed rigidly to the transverse
arm, is used when one is closing the fastener for the double purpose of drawing the
principal arm forward, and then turning the transverse arm down, and vice versa,
when opening it.
Figure 1 on the accompanying Sheet of Drawings is a plan of a sash fastener
constructed according to my Invention. Figure 2 is a front view; Figure 3, an
end view; and Figure 4, an oblique view of the same; and Figure 5, a section on
the line a, b, Figure 1.
A is the back plate or that to be fastened to the upper sash; B is the front
plate or that to be fastened to the lower sash; C is the latch or arm turning
on a centre at D; and E is the quadrant under which the latch or arm C passes
to fasten the window; F is a short transverse arm which is attached by a screw
G to the end of the latch or arm C; J is a stop to limit the motion of the
transverse arm F to half a revolution; and H is a knob, by means of which the
fastener is closed or opened, and which is fixed rigidly to the arin F.
If it is desired to place a spring behind the ann C in order to more securely
retain in its place when the fastener is unlatched, this can be inserted in the usual
manner, the arm or latch C being made narrower and partly square near the centre
at D.
In opening the fastener, the knob H is to be turned until the arm F is brought
into a vertical position above its centre of motion, and the arm C may then be
turned back on to the plate A, when the window will be unfastened. In closing
the fastener, the arm C must first be drawn forward in the usual manner, and the
knob D turned so as to bring the arm F into the position shewn in the Drawings.
A slight modification of the above described arrangement consists in making the
joint connecting the transverse arm F with the arm C work quite loosely, and
weighting the knob D on one side, so that when the fastener is latched, the
transverse arm will fall by its own weight into the position shown in the
Drawings.
Having now fully described and set forth the nature and object of my said
Invention, and in what manner the same is to be carried into effect, I wish it to be
understood that what I claim as the Invention secured to ine by the herein before
in part recited Letters Patent is, constructing a window sash fastener with n
transverse arm attached to the end of the principal one in the manner and for the
purpose herein before described and set forth.
In witness whereof, I, the said Samuel Henry Soper, have hereunto set my
hand and seal, this Twentieth day of October, in the year of our Lord
One thousand eight hundred and seventy nine.
SAMUEL HENRY SOPER, SEN³. (L.S.)