FIRE AND BURGLAR ALARM
Year: 1884

page_text: I, ISAAC THOMAS 24 Seymour Street Aberdare in the County of Glamorgan
Undertaker do hereby declare the nature of my invention for FIRE AND BURGLAR
ALARM to be as follows:-
The apparatus attached to which are the wires forming a connection with the
Electric Battery and from thence with the Bell.
Its mode of working is when the grease or wax by the action of heat melts, the
bar falls down causing a contact, thereby setting the bell in motion, and it will go
until the battery be exhausted.
To shew the action of the apparatus as a Burglar Alarm it will be seen that
upon the door or window being opened the string will tighten and cause the bar
or lever to fall so as to set the aların going as per plan supplied.
It will be seen in the drawing sent herewith that the lever F in the left hand
portion represents the apparatus before it is set in motion by the heat of fire, then
in the right hand portion the lever G shews the apparatus after the action of fire,
and setting the alarm bell in motion.
Now as to its operation in giving the Alarm, when a burglar attempts to enter
a building-On the right hand portion of the drawing; the string at the letter H is
tightly drawn when the door or window is forced, and the lever at once is removed
from the wax, and on to the pivot, causing an immediate alarm.

page_text: ISAAC THOMAS 24 and 25 Seymour Street Aberdare in the County of
Glamorgan Undertaker, I do hereby declare the nature of my invention for FIRE
AND BURGLAR ALARM and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
Fire and Burglar Alarm being an apparatus connected with an Electric Battery
and Bell so constructed as to be set in motion by very little heat in a room, caused
by the melting of a small quantity of wax or any other melted matter, when the
lever falls and the bell instantly gives the alarm.
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Referring to the drawing filed with the Provisional Specification it will be seen
that the lever F sticks fast to the point at " wax by means of wax, or any kind
of unmelted grease. The drawing on the left hand represents the lever F before
the outbreak of fire. Then referring to the said drawing on the right hand on the
said plan it will be seen that the lever G has fallen down to the peg at point D
which takes place after the outbreak of fire, by the melting of the wax.
The peg
at point D is connected by wire with an electric battery, and also with the bell
which is instantly set in motion when the lever touches at point D. The wax is
melted by heat reaching from 80 to 100 degrees.
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. Self-acting power, the lever falling caused by the action of heat melting the
wax or other greasy matter, which prior to the heat held the lever suspended, but
as the wax melts, the bar falls and comes in contact with the electric current, and
sets the apparatus instantly in motion.
2. The novel construction, adaption, and connection, between the Lever, Battery 2
apparatus and Bell.
3. Part of the apparatus can be removed during the evening before the family
retires to bed, when the gas may be strong, and then replaced when all retire and
the gas put out,-it will then be intact for the night, and ready for action in case
of the outbreak of fire,
3
Dated this 5th dow of Donamba 100E