Improvements in Sprinklers for the Automatic Extinction of Fires.
Year: 1889

page_text: Date of Application, 23rd Dec., 1889
Complete Specification Left, 23rd Oct, 1890-Accepted, 29th Nov.,
1890
PROVISIONAL SPECIFICATION.
Improvements in Sprinklers for the Automatic Extinction of Fires.
I, WILLIAM WHITEHEAD, of 17ª Bridgewater Chambers, Brown Street, Manchester,
in the County of Lancaster, Electrical Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in sprinklers for the automatic extinction
of fires and in particular to that class where great pressure is exerted on the fusible
link or other fusible connection such as is the case in "Walworth" automatic link
sprinkler.
The object of my invention is to relieve such fusible link or other fusible connection
of undue pressure, thus preventing it from being torn away before the heat has
reached the fusing point of the said link or other connection.
To this end my invention consists in the application to the hereinbefore named
class of sprinkler, of a system of horizontal lever or levers, which are connected to
and have their fulcrums near the upper extremity of the existing vertical lever at
right angles thereto, so as to reduce the power of resistance of the free end of the
said horizontal lever or levers and thus exert only a very slight pressure onto the
fusible link or other fusible connection.
When employing only one of the horizontal levers the free end thereof is fastened,
by the fusible link or other fusible connection, preferably to a peg formed on the
sprinkler body.
If it is desired to further reduce the pressure on the said fusible link or other
fusible connection a second horizontal lever formed similar as the first named one.is
hinged thereto, so as to form a second fulcrum near to the free end of the first
named horizontal lever. The free end of the second horizontal lever is provided with
a peg or otherwise formed to receive a fusible link or other fusible connection,
the other end thereof being attached near to the upper extremity of the existing
vertical lever. The shape and position of the said horizontal lever or levers is such
as to correspond with the configuration of the flange of the body of the sprinkler
near the point of connection with the supply pipe.
In order to retain the said lever or levers in their horizontal position they are
arranged to move between lugs formed on the sprinkler body.
By this system of levers the sudden shock of water onto the distributor of the
sprinkler, which is known as the "water hammer" will have no effect on the fusible
link or other fusible connection, owing to the vertical and second horizontal levers
tending to move in the same direction.
Dated this 21st day of December 1889.
F. BOSSHARDT & Co.,
Agents to Applicant.
COMPLETE
SPECIFICATION.
Improvements in Sprinklers for the Automatic Extinction of Fires.
I, WILLIAM WHITEHEAD, of 17ª Bridgewater Chambers, Brown Street, Manchester,
in the County of Lancaster, Electrical 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 :-
This invention relates to improvements in sprinklers for the automatic extinction
of fires and in particular to that class where great pressure is exerted on the fusible
link or other fusible connection such as is the case in "Walworth" automatic "link"
sprinkler.

page_text: The object of my invention is to relieve such fusible link or other fusible connection
of undue pressure, thus preventing it from being torn away before the heat has
reached the fusing point of the said link or other connection.
And in order that my invention may be more fully understoud I have caused. to be
appended hereunto one sheet of drawings marked with letters of reference indicating
like parts in the various figures..
Fig. 1 is a front view of the sprinkler and secondary levers complete.
Figs. 2 & 3 plans showing respectively the apparatus of one and two of the
respective secondary levers.
Fig. is a sectional plan of the sprinkler frame.
In carrying out my invention the improvements consist in the application to the
herein before named class of sprinkler of a system of horizontal or secondary lever or
levers a, a' which are connected to and have their fulcrumms b¹ on the sprinkler
flange near the upper extremity of the existing vertical lever dat right angles
theroto, so as to reduce the power of resistance of the free end of the said horizontal
or secondary lover or levers a, a', and thus exert only a very slight pressure onto the
fusible link or other fusible connection.
When employing only one of the horizontal or secondary levers a, a', the free end
of the lever a is fastened by the fusible link e or other fusible connection, preferably
to a peg formed on the sprinkler body or flange c.
If it is desired to further reduce the pressure on the said fusible link e or other
fusible connection another horizontal or secondary lover a' formed similar as the
first named one is hinged or linked thereto, so as to form a second fulcrum ' noar to
the free end of the first named horizontal or secondary lever a. The free end of the
horizontal or secondary lever a¹ is provided with a peg or otherwise formed to
receive a fusible link e or other fusible connection the other end thereof being
attached near to the upper extremity of the existing vertical lever d. The shape and
position of the said horizontal or secondary lever or levers a a³ is such as to
correspond with the configuration of the flange c of the body of the sprinkler near the
point of connection with the supply.pipe.
In order to retain the lever or levers a, a¹ in their horizontal position they are
arranged to move between lugs el formed on the sprinkler body or flange c.
By this system of levers a, a¹ the sudden shocks of water onto the distributor g of
the sprinkler, which is known as the "water hammer" will have no effect on the
fusible link e or other fusible connection owing to the vertical and horizontal or
secondary lever or levers a, a' tending to move in the same direction.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, 1 doclare that what I
claim, is :-
In sprinklers, the application to the lever operating the distributor g of one or
two horizontal or secondary levers a, a adapted to roduce the pressure upon the
fusible connection e, substantially as set forth.
Dated this
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F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.