A FIRE ALARM FOR AUTOMATIC FIRE EXTINGUISHERS
Year: 1885

page_text: COMPLETE DIECIFICATION.
-I JOSEPH BENJAMIN ADAMS of Harvey Buildings Numbers 26 and 28 James'
Street in the City of Liverpool in the County of Lancaster Engineer do hereby
declare the nature of my invention for THE CONSTRUCTION OF A FIRE ALARM
FOR AUTOMATIC FIRE EXTINGUISHERS and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to the construction of a Fire Alarm to be used in connection
with Automatic Fire Extinguishing Apparatuses and consists in the construction
and application of a double seated valve each valve being fastened on the one
spindle, the top part of such double seated valve being of a larger size than the
other so that the two valve seatings fastened on the one spindle can be ground
against the stationary double valve body at the one time and in the space between
the two seatings of the double valve body there is formed a half inch outlet to a
water motor on the outside of the building fixed at a suitable height from the
ground and fitted with pipes from the centre of the aforesaid valve to the water
motor which is fitted with a gong fastened thereon in a suitable manner, there
being on the spindle of the water motor a suitable hammer made of metal so arranged
that owing to the pressure of the water passing through the water motor it causes a
fan or plates inside the water motor to revolve and also causes the spindle with
the hammer attached to act in such a way as to strike the gong each time the
hammer revolves. The action which takes place in connection with this improved
Fire Alarm is as follows: The double seated valve is placed on the main pipe in
the inside of the building so fitted with such apparatus, each part of the double
valve being placed upright. As soon as the automatic sprinkler or sprinklers are
fixed in their places the pressure of water or carbonic acid gas is forced by the
pipes on the top part of the valve to a pressure of a sufficient volume to overcome
the pressure of water in the main leading from the street or reservoir, such result
being attained by the top valve being larger than the bottom valve the pressure
by artificial means on the top part of the valve thus being sufficient to overcome
the pressure of water in the main, that is to say: If the pressure of water is
sixty five pounds to the square inch, the artificial pressure on the top of the valve
can be seventy to one hundred and twenty pounds to the square inch. As soon as
the fusible metal contained in one or more of the automatic sprinklers becomes
melted by the heat of a fire the force of the water reduces the artificial pressure
on the top part of the valve, and the pressure of water coming from the main
against the bottom part of the valve forces the double seated valve and the spindle

page_text: the same time permitting the water to flow readily from the half inch pipe in the
centre of the valve body to the water motor and gong on the outside of the
building, so causing the alarm of fire-When the pipes are charged with water or
carbonic acid gas to cause the pressure to keep the double valve seating closed, the
pressure will be required to be maintained and I utilise what is known as a
hydraulic plunger with weights on the top and, which will compensate the
evaporation which is caused by the porousness of the pipes.
The above being a general description of my invention that the same may be
more clearly understood, I will now proceed to describe with the aid of the
drawings hereto annexed and which form a part of this specification how my
Invention may be carried out into practical effect by others skilled in the art to
which it appertains like letters and figures in the Drawings being used to denote
like or corresponding parts throughout the views.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a sideview of a building shewing part of inside together with the
Fire Alarm in working order-Figure 2 is a sectional view of the double seated valve
shewn in Figure 1-Figure 3, is a sectional view of the plunger D in Figure 1-
Figure 4 is a front view of the water motor and gong as shewn in Figure 1.
A in figure 1 is the water main in street B main tap and main pipe leading to
double valve C. double seated valve-J piping from double seated valve to water
motor D. a hydraulic pressure maintainer with weights E supply piping leading
to sprinklers-H. a metal hammer connected to the water motor spindle-G a gong
fastened so that the revolving hammer H will strike it-K waste water piping
from the water motor and gong I an automatic sprinkler.
A in figure 2 is the inside of piping from water main to valve, B being the
spindle with the two valve seatings thereon-C being the aperture in centre of the
body of the double seated valve which leads to the water motor and gong when
the valves are open.
A in figure 3 is the ordinary iron or cased brass piston-B. packing box or
gland.
A in figure 4 is a front view of water motor with gong-B. iron case of motor,
C. hammer connected with spindle of water motor and gong with a swivelled knob
arranged so as to pass the gong and at the same time strike the gong when
revolving D. piping leading from double seated valve-E waste piping lead.
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
First: The construction and application in connection with a fire extinguishing
apparatus of a water motor with a revolving hammer attached to the spindle with
a gong as herein described and fully set forth.
Second: The construction and application in connection with a fire alarm-and
fire extinguishing apparatus of a double seated valve with the two valve seatings
fastened on the one spindle with an open aperture. Between the two valve seatings
in the body of the valve..
Date this 20th
CM1002