Year: 1887

page_text: 1, ERIK MAGNUS SJÖHOLM of Stockholm, Sweden, Civil Engineer do hereby declare
the nature of this invention 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 invention is, by means of one cock with several ports, or passages
to supply a bath with water of any required temperature and also to supply a douche,
this mixing cock being intended particularly for bath-rooms, where the hot water is
obtained from water-heating stoves or boilers from whence the hot water is forced
out by pressure and replaced in the stove by cold water direct from the water conduit
or from a reservoir situated at a higher level.
Figure 1 on the drawing represents the body or casing with the pipe-groups but
without lid. Figure 2 is a section on the line N. W. R. of the mixing cock. Figure 3
shows the plug with its ports passages or recesses viewed from below.
The mixing cock consists of a body casing A in which the requisite pipes N, O, PQR
and S, TU are fixed in groups. A plug B provided with ports passages or recesses C,D
and E corresponding with the ports to the said groups of pipes. The neck is by
preference cast together with the plug and a handle G is attached thereto provided
with a pointer or hand F, the neck of the plug being bored out and in its upper part
provided with an inner screw thread for receiving an adjusting spindle H with a
nut-closure I for facilitating the adjusting of the plug.
The plug B is held enclosed in the body or casing A by means of a common stuffing
box K and a lid L provided with inscriptions or graduated index part. M is a helical
spring for tightening the plug B in its seat this spring being strong enough to
overcome the pressure from the water conduit or from the reservoir.
When the plug is turned so that the recess or port C coincides with the port to the
water pipe N and the port to the pipe O leading to the stove according to Figure 2,
the port or recess D will at the same time coincide with the port to the pipe Q coming
from the stove, thus receiving the hot water and leading it off through the pipe R to
the bath.
If the plug be turned a little more, so as to open also the port or recess D for the
inlet from the cold water pipe P, both cold and hot water will arrive simultaneously

page_text: and pass off through the outlet pipe R to the bath. If the plug is turned still more
so as to close the port or recess against the port to the delivery pipe N, the supply
of hot water from the stove is interrupted, so that only cold water is flowing through
the pipe P, the passage D and the pipe R to the bath.
In order to obtain a moderated douche a similar operation is performed but it is
then the passage E which lets through the cold water to the stove, but it is still the
passage
D which through the pipe T, is supplied with hot water and through the pipe S
with cold water, which through the pipe U, is led to the douche.
By arranging several such groups of pipes and passages other modifications may
be obtained.
The advantage of the arrangement described is that a number of cocks in the bath-
room are dispensed with for modifying the temperature of the water and by observing
at one and the same place the position of the hand relatively to the dial indications
on the lid, the error sometimes very fatal of turning the cocks the wrong way is
obviated nor can any dry boiling in the reservoir for heating the water take place, as
cold water immediately gets in in place of the hot.
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 :-
First: A bath cock consisting of a body or casing A provided with a lid L into
which casing one or more groups of pipes such for instance as N, O, PQ, R
and S, T, U, are opening and of a plug B placed in the casing and provided with
recesses passages or ports C, D, E on the outer side these ports having such a size
that when the cock is turned so that any of them get in front of the mouths of any
group of pipes the pipes of the same group are caused to communicate one with
another and of which recesses two always are simultaneously in front of their
respective pipe ports for the purpose, when letting out hot water from the heating
vessel to the bath to substitute the cold water arriving from the water pipe N to the
water let off, and by turning the plug to be able to modify the temperature of the
water flowing to the bath or to the douche substantially as described and shown.
Second The construction of bath cock substantially as described and shown.
53
1
1207
Dated this 25th day
ctober 1997
ERIK MAGNUS SJÖHOLM.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.
ERIK MAGNUS SJÖHOLM.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.