An Apparatus for Preventing Concussion in Water Pipes.
Year: 1885

page_text: An Apparatus for Preventing Concussion in Water Pipes.
'I GEORGE FREDERICK REDFERN, of the General Patent Office, No 4, South Street,
Finsbury, in the County of Middlesex, Patent Agent, do hereby declare the nature
of this invention (a communication from abroad by Gustaf Richert of Gothenburg,
in the Kingdom of Sweden, Engineer) and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
"
The object of this apparatus which I term a "universal water waste preventor
is, when using automatic cocks, to prevent hydraulic concussion in water pipes
and thereby to allow of the general use of such cocks in high pressure water pipes,
whereby the considerable waste of water which at present takes place with the
common screw cocks will be avoided.
In order to enable the invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1, is a front
view of the improved apparatus; figure 2 is a plan, figure 3 a side view, figure 4 a
vertical section, and figure 5 a horizontal section of the apparatus. Similar letters
in all the figures represent similar parts.
A, is a metal receiver divided into three chambers, A¹, A', A³; a, is an inlet-
pipe to be connected with the water pipe; b, is the outlet-pipe to which an
automatic outlet-cock is secured; c, is a perforated metal plate inserted between
the chambers A¹, and A²; d, is a light-floating ball of india-rubber placed in the
chamber A; e, is an opening between the chambers A* and A³, which latter
chamber has a hole f, at the top, by means of which it communicates with the
atmosphere. In order to prevent dirt from getting through this hole into the
chamber A, a cover such as B is provided or a downwardly bent pipe is inserted
in the hole.
The apparatus is applied to the water pipe immediately in front of an automatic
cock.
The cock being closed the water fills the chamber A', and A³, and the pressure
of the water keeps the ball d pressed against the opening e.
On opening the cock the water passes in through the pipe a, and out through
the outlet b. These pipes act as an ejector and draw the hole of the water from

page_text: the chamber A, and partly from the chamber A¹. When the cock is closed the
water passes through the pipe a, into the chamber A¹, passing thence with
diminished velocity into the chamber A³, forcing out the air through the hole e,
into the chamber A³, which communicates with the open air, the ball d, is thus
raised and pressed against the opening e, whereby a tight closing against the india
rubber seating is obtained. If however a portion of the water should pass into
the chamber A³, it will again pass down into the chamber A², on the re-opening of
the cock.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is
An apparatus for preventing concussion in water pipes, such apparatus consisting
of a metal receiver divided into three chambers and applied to the water pipe
immediately between it and the outlet cock, the lower part of the apparatus having
inlet and outlet pipes arranged to act as an ejector by means of small openings
communicating with the middle chamber, a light ball-valve shutting off the com-
munication between the middle or second chamber and the upper chamber which
is in communication with the atmosphere as herein before described and represented
in the accompanying drawing.