AN IMPROVED WATER METER AND WATER-POWER MOTOR, VALVE MOTION, AND REGULATOR
Year: 1877

page_text: LETTERS PATENT to Johann Christian Dennert, Engineer, in the City of
$6
Altona, Germany, for the Invention of AN IMPROVED WATER METER AND
WATER-POWER MOTOR, VALVE MOTION, AND REGULATOR."
PROVISIONAL SPECIFICATION left by the said Johann Christian Dennert
at the Office of the Commissioners of Patents on the 6th September 1877.
JOHANN CHRISTIAN DENNERT, Engineer, in the City of Altona, Germany. "AN
IMPROVED WATER METER AND WATER-POWER MOTOR, VALVE MOTION, AND
REGULATOR."
This valve motion is constructed for piston water meters and water-power motors,
and allows of an instantaneous reversal.
The regulator has for its purpose to regulate the quantity and pressure of water
which passes into the meter or motor.
My Invention is explained in the annexed Sheet of Drawings.
Figure 1 is a side view of my meter, in which the regulator is left out.
Figure 2, a front view, including the regulator; and Figure 3, a ground plan,
likewise showing the regulator.
Figures 4 and 5 are ground plan and side view (partly in section) of my regulator
in full size.
A is the cylinder; B, piston; and C, piston rod of my water meter; a is the inlet
pipe of the water into a double bent pipe r, 8. The regulator is placed before
the inlet a; the double bent pipe r, s, is connected to a turnable piece E, which
carries a flat bar F at its top upon which rests a weight G which can move up and
down within a frame p, p. This is connected by a rod t and a cross piece v to the
piston rod. The piece E, by an alternate revolving motion, opens and shuts the
Price G

page_text: channels leading the water in one or other direction to the piston, and shuts and
opens at same time either of the outlet channels in the corresponding way.
The alternate revolving motion of E is attained by the weight G running on the
bar F in the same direction as the piston rod, by pressing down either one or other
side of bar F at the moment when the piston has finished its stroke and when a
projection of the frame pushes against the lever w and disengages bar F from a
catch of the lever w. By this revolving motion the reversal is instantaneous. The
guiding bar F is kept in its new position by a catch of the lever w³ and the spring
until the piston has finished the reverse travel, when the reversal takes place.
My regulator consists of a tube H, into which the water enters in the direction
of the arrow. i is a piston passing from the opposite direction through a stuffing
box into the tube H, and closing by its surface an opening n leading to the meter
or motor. K is a turnable cock placed inside the tube H and connected with the
piston by means of a lever m and a connecting rod L. When the water enters the
regulator it pushes back the piston i, opens n, and flows through pipe a into the
meter or motor, as before described.
An adjustable counterweight P gives the necessary pressure against the piston i.
When the pressure of water exceeds the normal height the piston i is pushed further
backwards, turns cock K, and shuts the inlet opening of the latter, thus allowing less
water to pass into the meter. The more the piston i is pushed back, the more the
cock K becomes closed, and the less water can pass into the meter or motor.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Johann Christian Dennert in the Great Seal Patent Office on the 6th
March 1878.
"AN
JOHANN CHRISTIAN DENNERT, Engineer, in the City of Altona, Germany.
IMPROVED WATER METER AND WATER-POWER MOTOR, VALVE MOTION, AND
REGULATOR."
This valve motion is constructed for piston water meters and water-power motors,
and allows for an instantaneous reversal.
The regulator has for its purpose to regulate the quantity and pressure of water
that enters the meter or motor.
My Invention is explained in the annexed Sheet of Drawings.
Figure 1 is a side view of my meter, in which the regulator is not shown.
Figure 2 is a front view, including the regulator; and Figure 3, a ground plan,
likewise showing the regulator.
Figures 4 and 5 are ground plan and side view (partly in section) of my regulator
in full size, and Figure 6 is a modification of the latter."
A is the cylinder; B, piston; and C, piston rod of my water meter or water-power
motor; a is the inlet pipe for the water into a double bent pipe r, s. The regulator
is placed before the inlet a; the double bent pipe 7, 8, is connected to a turnable
piece E, which carries a flat bar F at its top, upon which rests a weight G which
can move up and down within a frame p, p, that is connected by a rod t and a cross
piece to the piston rod. The piece E, by an alternate revolving motion, opens
and shuts the channel leading the water in one or other direction to the piston, and
shuts and opens at same time either of the outlet channels in the corresponding
way.
The alternate revolving motion of E is attained by weight G running on bar F,
in same direction as the piston rod, by pressing down either one or other side of bar
F at the moment when the piston has finished its stroke and when a projection z of
the frame pushes against lever wand disengages bar F from a catch of lever w. By
this revolving motion the reversal is momentary. The guiding bar F is kept in its
new position by a catch of lever w³ and spring x until the piston has finished its
reversed stroke, when the reversal takes place; e is the off-flow pipe of the water.
My regulator consists of a tube H into which the water enters in the direction of
the arrow. i is a piston passing from opposite end through a stuffing box into tube
H, and closing by its surface an opening n leading to the meter or motor.
K is a
turnable cock, being placed inside tube H, and connected with piston i by means of
a lever m and a connecting rod L. When the water enters the regulator it pushes
back piston i, opens n, and flows through pipe a into the meter or motor, as before
described.
An adjustable counterweight P gives the necessary pressure against piston i.
When the pressure of water exceeds the normal height the piston i is pushed further
backwards, turns cock K, and shuts the inlet opening of the latter, thus allowing
less water to enter the meter. The further back piston i is pushed, the more is K
closed, and the less water can enter the meter or motor.
Figure 6 shows a modification of my regulator in which a piston is applied instead
of the cock k, and by means of which the connecting rod and lever can be dispensed
with.
And having now described the nature of my said Invention, and in what manner
the same is to be performed, I declare that I claim,―
First. The valve motion for water meters and water-power motors, as described
and shown.

page_text: Secondly. The regulator for water meters and water-power motors, in the
manner described, and as shown in the accompanying Drawings.
In witness whereof, I, the said Johann Christian Dennert, have hereunto
set my hand and seal, this Twenty-eighth day of February, One thousand
eight hundred and seventy-eight.
JOHANN CHRISTIAN DENNERT. (L.S.)