Water-supply-pipes
Year: 1886

page_text: Date of Application, 5th May, 1886.
Complete Left, 2nd Feb., 1887.
Complete Accepted, 4th Mar., 1887.
Water-supply-pipes.
I, CARL VON SLUYTERMAN, architect, residing at Altona, Kingdom of Prussia, do
hereby declare the nature of this invention to be as follows
The object of my invention is to prevent shocks from occurring in water-supply-
pipes in case the eduction-orifices are suddenly closed.
For this purpose I arrange upon the supply-pipe close to the eduction-orifice an air-
vessel which is at its bottom end in permanent communication with the said pipe.
When water is drawn off through the said orifice and the latter is abruptly closed, the
air confined in the vessel forms a cushion, which, in being compressed by the inertia
of the water that is still in motion within the pipe, stops the flow thereof gently and
thus prevents a concussion from taking place.
Any lack of air in the air-vessel is made up by air passing in through the outflow-
orifice when the same is opened for drawing off water.
CARL VON SLUYTERMAN,
By his Agent, Carl Pieper.
water-supply-pipes.
I, CARL VON SLUYTERMAN, architect, residing at Altona, Kingdom of Prussia, do
hereby declare the nature of this invention and in what manner the same is to be
O performed to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to prevent shocks from occurring in water-supply-
ninas in case the education

page_text: For this purpose I arrange upon the supply-pipe close to the eduction-orifice an air-
vessel which is at its bottom end in permanent communication with the said pipe.
When water is drawn off through the said orifice and the latter is abruptly closed, the
air confined in the vessel forms a cushion, which, in being compressed by the inertia
of the water that is still in motion within the pipe, stops the flow thereof, gently and
thus prevents a concussion from taking place.
Any lack of air in the air-vessel is made up by air passing in through the outflow-
orifice when the same is opened for drawing off water.
On the annexed sheet of drawings my invention is represented in combination with
an automatically-closing valve of a water-supply-pipe.
In Fig. 1a is the supply-pipe, the air-vessel and c the valve, which can be opened
by a pressure on the knob i. If there is a high head of water in the pipe a, a lever or
other like device may be applied to the valve-stem for opening the valve. d is a spout
forming the orifice through which the water flows out, and whereby during such
outflow air enters into the vessel a, so as to replenish it with air if there is any lack of
the same.
In order that, when the valve is opened, the water contained in the air-vessel may
be discharged first, and air may enter more freely, it is advantageous to temporarily
reduce the flow from the supply-pipe. For this purpose I attach to the valve-stem a
piston which contracts or nearly obturates the mouth of the supply-pipe when the
valve is about half-open. According to Fig. 1 and the end-view, Fig. 2, the piston is
constituted by a cylinder having the notches e and e', the notches e allowing the water
to pass into the valve-chamber and thence into the air-vessel when the valve is
closed, the notches giving passage to the water after the valve has been fully
opened; whereas the central or full part of the piston, on registering with the rim g
arranged in the mouth of the pipe a, nearly stops the flow of the water. Fig. 3 shows
a piston having a groove e, by which a permanent free communication is established
between the pipe a and the valve-chamber h, and a notch et alike to the notches e of
the piston shown in Figs. 1 and 2. Figs. 4 and 5 represent a other form of piston f
which will be understood without further explanation. The mouth of the pipe a may
with advantage be made oblong, the piston being formed accordingly.
Fig. 6 shows the water-supply-pipe with valve and air-vessel applied to a water
reservoir and combined with a float k, operating to open the valve when the water in
the reservoir becomes low. The closing of the valve is, however, not brought about
by the float, but by the pressure of the water in the supply-pipe after the water in the
reservoir has sufficiently raised the float so that it releases the valve, a complete
closure of the valve being thus attained, while shocks are prevented by the air in the
air-vessel; whereas if the valve is so connected to the float as not only to be opened,
but also to be closed thereby, its closure will ordinarily be incomplete.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is :-,
The combination, with the water-supply-pipe a, valve-chamber with open eduction-
orificed and valve c, of the air-vessel communicating with the supply-pipe and
adapted to be replenished with air through the orifice d when the valve is opened and
the water from the air-vessel is discharged, substantially as described.