IMPROVEMENTS IN THE APPLICATION OF TAZ MTEN CITET T ALANTA AR WINDOWS AND DOODG
Year: 1882

page_text: LETTERS PATENT to Benjamin Coyle of 31 Lower Ormond Quay in the city
of Dublin for an invention of IMPROVEMENTS IN THE APPLICATION OF
TAZ MTEN CITET T ALANTA AR WINDOWS AND DOODG
PROVISIONAL SPECIFICATION left by the said Benjamin Coyle at the
Office of the Commissioners of Patents on the 22nd May 1882.
BENJAMIN COYLE of 31 Lower Ormond Quay in the city of Dublin "IMPROVE-
MENTS IN THE APPLICATION OF ELECTRICITY AS A DETECTOR IN THE SAFELY CLOSING
OF WINDOWS AND DOORS OF DWELLING HOUSES BANKS, AND STORES
"
The object of this invention is to detect burglarious attempts on dwelling houses,
banks and so forth, by aid of electric alarms and by this means preventing the
opening of windows, or forcing of doors.
In applying the principle to windows to prevent entry thereat by pushing aside
the latch from the outside, the following is the modus operandi:-The upper
portion of the window sash is recessed or hollowed out for the reception of two
magnetic poles and insulated wires in connection therewith, these latter being led
from one side of the centre of the sash where they are connected with two strips of
copper or other conducting material which extends the whole length of the rising
of the upper sash; the wires communicate also with a battery or cells in the usual
manner,
The knob of the latch at the lower portion in its backward and forward
movements passes over a spring, fixed at one end to the latch plate, this spring
terminates at its free end with a projection, or what I term a divider as it either
breaks or restores contact of the poles, in its downward or upward movements, a
recess being made through the latch 'plate to admit of its free movement up and
down.
The action is as follows: supposing an attempt is made to force the latch back
by aid of a knife from the outside, immediately the latch is moved the spring
divider alluded to rises from between the poles as the latch is removed from the
spring, which latter then rises and one of the poles being connected to a spiral

page_text: spring at once advances to meet the other or fixed pole and as soon as the two are
in contact an electrical communication is effected by aid of the wires and battery,
with an ordinary electric alarm bell.
Outside of the frame of the lower sash are two springs to which copper or brass
points are attached, which when the window is raised, are kept in contact with the
recessed slip in the side of the rising portion of the sash thus causing the alarm
to ring as soon as there is any rising of the sash, or should there be any negligence
in closing the latches.
In applying the apparatus to doors; when the latch or bolt is fixed in the locked
position the action is the same as that of the window sash, the divider being
removed from the poles the latter are brought into contact till the door is bolted
The copper or conducting strips in this case are dispensed with, the wires being
encased in the frame of the door,
One of the chief advantages of my system of alarm is the check upon either
negligence or connivance of the domestics.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Benjamin Coyle in the Great Seal Patent Office on the
17th November 1882.
BENJAMIN COYLE of 31 Lower Ormond Quay in the city of Dublin IMPROVE-
MENTS IN THE APPLICATION OF ELECTRICITY AS A DETECTOR IN THE SAFELY CLOSING
OF WINDOWS AND DOORS OF DWELLING HOUSES, BANKS AND STORES
The object of this invention is to detect burglarious attempts on dwelling houses,
banks and soforth, by aid of electric alarms, and by this means preventing the
opening of windows, or forcing of doors.
In applying the principle to windows to prevent entry thereat by pushing aside
the latch from the outside, the following is the modus operandi.
The upper portion of the window sash is recessed or hollowed out for the
reception of two magnetic poles, and insulated wires in connection therewith, these
latter being led from one side of the centre of the sash, where they are connected
with two strips of copper or other conducting material which extends the whole
length of the rising of the upper sash; the wires communicate also with a battery
or cells in the usual manner.
In the accompanying drawings embodying my invention Fig 1 is a vertical
section through Fig. 2 which is a plan of my improvements Fig 3 being a section
through C-D of Fig 1. Figs 4. and 5 are a section and plan showing a slight
modification in the method of connecting and disconnecting the poles to be
hereafter explained.
The knob A, of the latch B, at the lower portion in its backward and forward
movements passes over a spring C, fixed at one end to the latch plate, this spring
terminates at its free end with a projection or what I term a divider D, as it either
breaks or restores contact of the poles E. F. in its downward or upward move-
ments; a recess being made through the latch plate to admit of its free movement
up and down.
The action is as follows: supposing an attempt is made to force the latch back
by aid of a knife from the outside, immediately the latch is moved the spring
divider D, alluded to rises from between the poles E. F. as the latch is removed
from the spring C, which latter then rises and one of the poles F, being connected
to a spiral spring G, at once advances to meet the other or fixed pole E, and as
soon as the two are in contact an electrical communication is effected by aid of the
wires H, and battery with an ordinary electric alarm bell
Outside the frame of the lower sash are two springs to which copper or brass
points are attached, which when the window is raised are kept in contact with the
recessed slip in the side of the rising portion of the sash, thus causing the alarm to
ring as soon as there is any lifting of the sash, or should there be any negligence
inside in closing the latches.
In applying the apparatus to doors, when the latch or bolt is fixed in the locked
position, the action is the same as that of the window sash, the divider being
removed from the poles the latter are brought into contact till the door is bolted.
The copper conducting strips in this case are dispensed with, the wires being
encased in the frame of the door.
One of the chief advantages of my system of alarm is the check upon either
negligence or connivance of the domestics for when the electric current is prepared
for action at night when all windows and doors are closed, the alarm acts and
continues to ring until the door or window accidentally left open, is closed by the
bolt or fastener.
Figures 4 and 5 show a slight modification in the method of connecting and

page_text: disconnecting the poles E. F, by means of a spring A fixed to a piece of non
conducting material B, vide section Fig 4. when the bolt which fastenes the window
or door is closed the hardened steel peg C, Fig 4 is depressed and disconnects the
poles E. F at the point Z. W. W. are the insulated wires leading to the edge of the
sash or door.
As applied to windows the contact is preserved during the movement of the
sash either by aid of strips of copper or other conducting material inserted in the
timber frame to which strips, points of wire are kept in contact by a spring, and
these points are attached to the wires leading to the battery. Or the wires may be
adjusted in two loops passing through slits in the window frame which will allow
the sash to rise and fall without breaking the current.
In witness whereof I the said Benjamin Coyle have hereunto set my hand
and seal this fifteenth day of November in the Year of Our Lord One
thousand eight hundred and eighty two.
BENJAMIN COYLE (L.S.)