Improvements in Automatic Fire Extinguishing Sprinklers
Year: 1899

page_text: Date of Application, 18th Aug., 1899-Accepted, 14th Oct., 1899
COMPLETE SPECIFICATION.
Improvements in Automatic Fire Extinguishing Sprinklers,
I. GEORGE MILLS, of the Firm of George Mills and Company, of Globe Iron
Works, Radcliffe, in the County of Lancaster, Engineer, 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:
-
My invention relates to improvements in those automatic fire extinguishing
sprinklers in which a valve face is maintained in close contact with a valve seat
by means of compound levers arranged horizontally and secured in position by
a special form of sensitive solder joint or connection as described in the Specifi-
cation to Lynde's Patent numbered 313 of 1895.
My present improvements consist in the use and application of a particular
arrangement of compound levers arranged vertically instead of horizontally and
secured in position by the aforesaid special form of joint.
In the accompanying sheet of drawings-
Figure 1 is a sectional elevation and Figure 2 a front elevation of an automatic
sprinkler constructed in accordance with my present improvements.
Figure 3 is a similar view to Fig. 1 but showing part of the fusible joint
detached.
Figure 4 is a similar view to Fig. 2 but with some of the parts removed.
In these views, a designates the body of the sprinkler, 6 the strap or bracket
which supports the distributor c, and d the valve which is held to its seating by,
the following particular arrangement of compound levers.
The first lever e is Tshaped and the head of the T is diamond shaped in
cross section and beds in a groove formed to receive it in the back of the valve d.
The shank of the lever e is rounded off near its end and lies in the fork of a double
lever f. The double lever f is supported by an adjusting screw g which passes
through the centre of the distributor c and through the strap band serves to
regulate the pressure of the valve d against its seating. The third lever h is a
spring lever and is preferably cursed as shown, one end being engaged in a
groove f¹ formed to receive it on the double lever f and the other end being
held in position (to retain the shank of the lever e in place) by means of the
special form of insulated sensitive solder seal consisting of the flanged metallic
tubes i and j soldered together by sensitive solder and insulated by the washers k
substantially as described in the aforesaid Patent Specification No. 313 of 1895.
When the sensitive solder melts on an outbreak of fire the tube i and its
washer kare flirted away by the spring lever h and the parts including the valve d
fall away thus allowing water under pressure in the supply pipe, not shown to
issue from the body a on to the distributor c by which it is deflected and spread in
the usual way.
If preferred, the head of the screw 9 may be cut off and the screw rivetted in
position after the valve d has been sufficiently screwed up and the sprinkler tested.

page_text: 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:-
In an automatic fire extinguishing sprinkler.
The combination with the valve, of the levers e, f and h, and the flanged tube
joint, secured by sensitive solder, all constructed and arranged substantially as
herein described with reference to the accompanying drawings.
Dated this 17th day of August 1899
H. B. BARLOW & GILLETT,
Agents for Applicant, 17, St. Ann's Square, Manchester.