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H.S. PARMELEE'S PATENT AUTOMATIC SPRINKLER.


The inventor says: "The automatic sprinkler is a device for
automatically extinguishing fires through the release of water by means
of the heat of the fire, the water escaping in a shower, which is thrown
in all directions to a distance of from six to eight feet. The sprinkler
is a light brass rose, about 11/2 inches diameter and less than two inches
high entire, the distributer being a revolving head fitted loosely to
the body of the fixed portion, which is made to screw into a half inch
tube connection. The revolution of the distributer is effected by the
resistance the water meets in escaping through slots cut at an angle
in the head. The distribution of water has been found to be the most
perfect from this arrangement. Now, this distributing head is covered
over with a brass cap, which is soldered to the base beneath with an
alloy which melts at from 155 to 160 degrees. No water can escape until
the cap is removed. The heat of an insignificant fire is sufficient to
effect this, and we have the practical prevention of any serious damage
or loss through the multiplication of the sprinkler.

[Illustration: PARMELEE'S PATENT AUTOMATIC SPRINKLER. FIG. 1.--Section
of Sprinkler with Cap on.]

The annexed engravings represent the sprinkler at exact size for
one-half inch connection. Fig. 1 shows a section with the cap covering