an Alarm in Case of Fire in Dwelling Houses and Buildings.
Year: 1886

page_text: отеци от прравQvus 101 дишашоону кошик
an Alarm in Case of Fire in Dwelling Houses and Buildings.
I JAMES OSBORN SPONG of 226 High Holborn, Middlesex, Domestic Appliances
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of apparatus in which when the heat of a
room rises to an unusual degree said heat shall act upon a sensitive material and
cause a bell or other sound giving instrument to be released and cause an alarm.
.
For the purpose of my invention, I employ a metallic alloy of very soft temper
as regards heat this alloy is preferably in flat stick form and one end of it or both
ends are inserted into notches formed in two projecting sockets. The portion
exposed between the sockets carry a weight suspended said weight being attached
to a chain wound on a drum, the drum having in connection with it a toothed
wheel in gear with a pinion to which rotary motion is communicated when the
weight is released such as would be occasioned from the overheating of the metallic
alloy in the event of a fire occurring in the room in which the apparatus is affixed.
The pinion has a pin or arm projecting eccentrically from it said pin being in a
race or slot of a lever suspended loosely from above. The lower end of this lever
has a hammer or clapper, which as the pin rotates is brought into contact with a
bell or gong within its reach which it strikes intermittently yet rapidly during the
time the weight is descending.
If the stick of metallic alloy is held at one end only the heat causes it to bend
till the weight suspension ring slides from it, but if the metallic alloy be placed
into two sockets the weight is not released until the metallic alloy fuses or
breaks.
The metallic alloy is of such a nature that it will bend at about 120 or
130 degrees of beat and will melt at between 150 and 160 degrees. Instead of
this fusible alloy being inserted into sockets or made flat as above referred to, it
may be formed hook or link shape to support the weight or in lieu of attaching it
direct to the weight it may be fixed in position to check any part of the mechanisın,
and instead of the chain and weight a spring can be released from tension to work
the hammer.

page_text: Improved Arrangement of Apparatus for Automatically Sounding
an Alarm in Case of Fire in Dwelling Houses and Buildings.
I, JAMES OSBORN SPONG of 226 High Holborn, Middlesex, Domestic Appliances
Manufacturer, 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 relates to that class of apparatus to be hung preferably near the
ceiling in any part of the room in which when the heat of a room rises to an
unusual degree said heat shall act upon a sensitive material metallic or otherwise
causing it to contract or expand and cause a bell or other sound giving instrument
to be released and cause an alarm.
.
The invention will be clearly understood by reference to the annexed drawings
in which Figures 1, 2, 3 and 4 are perspective views of the apparatus.
For the purpose of my invention, I employ a metallic alloy A of very soft
temper as regards heat; this alloy A is preferably in flat stick form as shown at.
Figure 1 and one end of it (see Figure 2) or both ends are inserted into notches B
formed in two projecting sockets C C. The portions exposed between the sockets
carry a weight D suspended, said weight D being attached to a chain E wound on
a drum F the drum having in connection with it a toothed wheel G in gear with a
pinion H to which rotary motion is communicated when the weight is released
such as would be occasioned from the over heating of the metallic alloy in the
event of a fire occurring in the room in which the apparatus is affixed.
The pinion has a pin or arm I projecting eccentrically from it, said pin I being
in a race or slot J of a lever K suspended loosely from the projection L. The
lower end of this lever K has a hammer or clapper, M, which as the pin I rotates,
is brought into contact with a bell or gong N within its reach which it strikes
intermittently yet rapidly during the time the weight D is descending.
If the stick of metallic alloy is held at one end only as shown at Figure 2 the
heat causes it to bend till the weight suspension ring O slides from it but if the
metallic alloy be placed into two sockets the weight is not released until
the metallic alloy fuses or breaks.
The metallic alloy which may contain any suitable ingredients is of such a
nature that it will bend at about 120 or 130 degrees of heat and will melt at
between 150 and 160 degrees, as do some alloys of tin, lead, and bismuth.
Instead of this fusible alloy being inserted into sockets or made flat as above
referred to, it may be formed hook or link shape as shown at Figure 3 to support
the weight D or in lieu of attaching it direct to the weight it may be fixed in the
back plate P in position to check any part of the mechanism and instead of the
chain and weight a spring can be released from tension to work the hammer.
Figure 4 shows an arrangement with a stick or block of fusible alloy A in the
teeth of the gear wheel G to prevent its movement until the alloy is melted
disintegrated by heat. Figure is a modification of the arrangement shown at
Figure 4. The block of fusible alloy A is placed in a notch Q in the periphery of

page_text: a spring box R containing a spring S. The spring box R is provided with cogs or
projections T which act against a short arm U of the bell hammer V, said hammer
being returned to position by a spring W. Figure 6 shows an arrangement in
which a cord or loop A¹ of catgut or other animal tissue is employed instead of
the alloy.
When the temperature of the room or place where the apparatus is situated
rises to 155 degrees, nothing can prevent the cord A¹ of animal tissue forcibly
contracting to about one half of its original length, drawing the pin or bolt X, the
weight D is released and the bell N is sounded.
Figure 7 is a view of the apparatus with the weight D released and partly
run down.
Figure 8 shows a loop of metal or alloy (such as would become disintegrated and
incapable of supporting a weight at a little above 112 degrees) held in position to
receive the suspension hook O by two pins Y Y in a frame Z which may be
attached to the apparatus before described by means of the nut Z¹.
The wire connecting between bell and heating appliance may be of any length
and have cranks or bends a a to lead to any distance or round corners and more
than one set of heat expansive appliances bb can be fitted, so that several rooms
can be controlled to ring one bell as will be understood by reference to Figure 9.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
1. The improved arrangement of apparatus for automatically sounding an alarm
in case of fire, hereinbefore described and shown by the annexed drawings.
2. The apparatus for sounding a bell or gong herein before described actuated by
the melting, contracting or expanding of fusible alloy, animal tissue, or other
material for the purpose set forth.