Improvement in Fire Extinguisher.
Year: 1892

page_text: Date of Application, 12th Jan., 1892-Accepted, 26th Mar., 1892
('OMPLETE SPECIFICATION.
Improvement in Fire Extinguisher.
I, ADOLPH REINEMANN, of 69 East 59th Street, New York, County and State
of New York, United States of America, Chemist, 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 a fire extinguisher in which a confined body of liquified
carbonic acid or a similar gas is automatically released at the outbreak of a fire or
an undue rise of temperature. Thus the gas can commingle with the air to
extinguish the fire.
In the accompanying drawing:
Fig. 1 is an elevation partly in section of the apparatus.
Fig. 2 a section through the stop cock.
Fig. 3 a horizontal section on line a, a, Fig. 1.
Fig. 4 a perspective of the box h.
Fig. 5 a section on line y, y, Fig. 1.
Fig. 6 a modification of the suspending mechanism.
Fig. 7 a modification of the apparatus and
Fig. 8 a longitudinal section through the fusible chain link.
A vessel a, made of wrought iron or similar material for the reception of liquified
carbonic acid or a similar gas is provided with a stop cock b. If desired a limited
quantity of nitrogen may also be introduced into vessel a, to increase the pressure.
To the stop cock b, there is attached by a suitable coupling and packing d, a tube,
of glass or other fragile material. This tube is closed in frout and communicates by
means of the stop cock with the vessel a. Thus when the cock is open, carbonic
acid enters the tube. If desired the tube c, may be directly connected with the
vessel a.
In line with the tube c, there is suspended a weight e, by means of a
chain. This chain runs over suitable pulleys along the ceiling to any desired
points in the room, loft or factory. The chain is either fusible in body or provided
with links, of easily fusible metal alloys at suitable intervals. These links are
composed of two pins provided with eyes and roughened or barbed stems (Fig. 8).
Around the stems a body of the fusible metal is cast so as to connect the pins,
until the body melts, which occurs at a temperature of about 160° F. more or less
according to the composition of the alloy. A perforated trough g, may be employed
to protect the chain.
If desired the chain or a wire may be suspended by a sliding bolt (Fig. 6). If
the chain or wire is severed by melting, the weight e, will drop upon tube c, so as
to shatter the same and permit the gas from vessel a, to escape. The gas will thus
commingle with the air and extinguish the fire.
To prevent the weight from breaking the tube c, at a time when not desired and
also to prevent tampering with the apparatus, I may enclose the lower part of the
latter by a box h. This box is provided with a false bottom h', which as well as
the bottom proper is cut away in line with the fall of the weight. To the lid, of
the box are secured two shelves, which when the lid is closed, are interposed
between the line of fall of the weight and the tube c.. Thus when the lid is locked,
the weight, even if released, cannot reach the tube c, but when the lid is open, the
weight has access to the tube and after breaking the same will leave the box
through the opening in its bottom.
In Fig. 7, the vessel a, is shown to be placed in a horizontal position. The
weight or plug e running on guides i, is by a weight j, drawn against tube c, when
the weight e, has been released.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
.
1. The combination of a metal receptacle a, with a communicating fragile tube
and a weight suspended in line therewith, substantially as specified.
2. The combination of vessel a, with a stop cock b, a fragile tube secured thereto
and a weight in line with the tube, substantially as specified.
3. The combination of vessel a, with a fragile tube, communicating therewith,
a weight e, and a box, having shelf h³, adapted to intercept the weight, substantially
as specified.
4. The combination of vessel a, with a fragile tube c, communicating therewith,
a weight e, in line with the tube and a chain f, having fusible links f³, for
suspending the weight, substantially as specified.
Dated this 12th day of January 1892.
HERBERT J. ALLISON,
Agent for the Applicant.