We annex illustrations of a meter designed by Mr. A. Schmid, of Zürich,
and which, according to _Engineering_, is now considerably used on
the Continent, not only for measuring water, but the sirup in sugar
factories, in breweries, etc. It consists of a cast iron body containing
two gun-metal-lined cylinders, and connected by an intermediate chamber.
Round the body are formed two channels, one for the entrance and the
other for the discharge of the water, etc., to be measured. Within the
cylinder are placed two long pistons, provided with openings in such
a way that each piston serves as a slide valve to the other, the flow
being maintained through the ports in the connecting chamber. The
arrangement of openings in the piston is shown in Figs. 5, 6, 7, and the
intermediate passages in Figs. 1, 2, and 3. To the upper side of each
piston is attached a cross-head working on a disk placed at each end of
a horizontal shaft. To one of the disks is added a short connecting rod
that drives the spindle of a counter.
[Illustration: SCHMID'S WATER METER.]
* * * * *