Improvements in Valves for Controlling Hot and Cold Water Supply to Public and other Baths and the like.
Year: 1895

page_text: Date of Application, 9th Aug., 1895
Complete Specification Left, 10.h Jan., 1896-Accepted, 7th Mar.,
1896
PROVISIONAL
SPECIFICATION.
Improvements in Valves for Controlling Hot and Cold Water Supply
to Public and other Baths and the like.
I, JAMES CHRISTOPHER BUSBY, of 166, & 168, Holloway Road, London, N.
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to combined valves for controlling the supply of hot and
cold water to baths and lavatories, particularly public baths, and it has for its
object to increase the strength and durability of the apparatus, lessen the cost of
manufacture, and particularly to facilitate the dismounting and repair of the valves.
The two valves are capable of being opened and closed separately or conjointly at
will by the rotation of a cam acting directly on the valve spindles in opposition to
springs, the opening of either or both of the valves depending on the relative
position of the cam and the valve spindles.
The valve chamber is a casting divided into hot and cold water and mixing
chambers, the hot and cold water supply pipes being coupled to the opposite ends
of the casting whilst the delivery pipe leading to the bath is connected to the
mixing chamber at the underside. The valves are seated against the diaphragm
separating the hot and cold chambers from the mixing chamber, their spindles
being horizontal and side by side and projecting into a hollow bracket adapted to
enclose the cam disc by which the valves are operated, the bracket being adapted
to be fixed against a vertical partition enclosing the end of the bath. The ends of
the valve spindles enter the cam casing in position to be acted on by the cam face
and the spindles pass through stuffing boxes in the front of the mixing chamber
and are provided with winged body portions by which they are guided in the
apertures in the diaphragm against which the valves are seated. The valves are
formed by discs faced with washers of suitable material, the discs being screwed to
the winged body portions and clamping the washers against the same, and they are
made accessible by the back of the casting being provided with apertures closed by
screw plugs directly opposite the valves, through which the valves may be separately.
withdrawn for inspection and repair.
The valves close with the water pressure and are held to their seats by spiral
springs coiled about the external part of their spindles between the valve and cam
casings, the springs being confined between the stuffing boxes on the former and
collars upon the spindles. These collars form the guiding surfaces at the front
ends of the spindles which slide in the apertures in the cam casing and they are
detachably connected to the spindles by cross pins or other means of connection
which will admit of the spindles being detached and the valves and their spindles
being withdrawn through the plug-closed apertures above referred to, leaving the
collars as bushings in the apertures of the cam casing. The cam is a disc carried
by a horizontal spindle traversing the valve casing from front to back and which
may be operated by a handle at either end either from within or without the bath-
enclosing partition, each handle turning over a disc mounted on the said partition
or on the casing enclosing the valve apparatus as the case may be and marked with
indications denoting the effect produced by rotating the handle to different positions.
The valve spindles are acted on by diametrically opposite points of the cam face
which is provided with double inclined projections of such form and so situated
relatively to one another that both the valves may be opened either simultaneously

page_text: and in any desired relative proportion or separately by turning the cam to different
positions.
Dated this 9th day of August 1895.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
•
Improvements in Valves for Controlling Hot and Cold Water Supply
to Public and other Baths and the like.
I, JAMES CHRISTOPHER BUSBY, of 166, & 168, Holloway Road, London, N.
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 :―
This invention relates to combined valves for controlling the supply of hot and
cold water to baths and lavatories, particularly public baths, and it has for its
object to increase the strength and durability of the apparatus, lessen the cost of
manufacture, and particularly to facilitate the dismounting and repair of the
valves.
The invention will be described with reference to the accompanying drawings
wherein
Figure 1 is a sectional side elevation as fitted, Figure 2 is a front elevation, and
Figure 3 is a horizontal section of the valve apparatus.
Figure 4 is a face view of the outlet,
Figure
a face view of the dial, and
Figure a face view of the cam.
The same letters of reference denote like parts in all the figures.
The two valves H C respectively control the hot and cold water supplies and
they are capable of being opened and closed separately or conjointly at will by the
rotation of a cam acting directly on the valve spindles h, c, in opposition to
springs h, c, the opening of either or both of the valves H C depending on the
position of the cam relatively to the valve spindles h, c.
The valve casing A is a casting divided by a longitudinal diaphragm a and by a
transverse partition 6 into separate valve chambers to which the hot and cold
water supply pipes H¹, C', are respectively coupled at the opposite ends of the
casting.
C
The valves HC are seated against the diaphragm a separating the hot and cold
valve chambers from the mixing chamber M into which open the apertures in the
diaphragm covered by the valves, the valve spindles Ac being arranged horizontally
side by side and projecting into a hollow bracket B adapted to enclose the cam
disc D by which the valves are operated. The bracket B is adapted to be fixed
against a vertical partition E enclosing the end of the bath for the purpose of
supporting the casing A in position, the bracket and casing being connected by legs
leaving a clear space between for access to the valve spindles whose ends enter the
cam casing B in position to be acted on by the face of the cam D. The spindles
pass through stuffing boxes u in the front of the mixing chamber M of casing A
and are provided with winged body portions by which they are guided in the
apertures in the diaphragm a against which the valves are seated. Each valve is
formed of a disc y faced with a washer of suitable material, the disc y being
screwed to the winged body portion and clamping the washer against the same
and each valve is made accessible by the back of the casting being provided with
an aperture closed by a screw plug w in axial alignment with each valve, through
which apertures the valves may be separately withdrawn for inspection and repair.
3

page_text: These
The valves close with the water pressure and are pressed towards their seats by
the spiral springs h', c¹ coiled about the external part of their spindles between
the valve casing A and the cam casing B, the springs being confined between the
stuffing boxes u on the former and collars t fixed upon the spindles h c.
collars t form the guiding surfaces at the front ends of the spindles which slide in
the apertures in the cam casing B and they are detachably connected to the spindles
by cross-pins s or other means which will admit of the collars being disconnected
from the spindles and the valves and their spindles being withdrawn through the
apertures disclosed by removing the plugs w above referred to, leaving the collars
as bushings in the apertures of the cam casing B.
To effect this it is only necessary to turn the cam D so as to compress the
spring on the valve spindle so far as to bring the cross-pins into view, then by
removing the cross-pin and the plug to the valve and its spindle may be withdrawn
leaving the bushing t and spring in position. n is a socket on casing A which has
a square hole in which the squared end of the valve spindle is inserted when
renewing the washer (as shown in dotted lines in Figure 2) for which purpose it is
simply necessary to unscrew the body portion of the valve with the aid of a
spanner, and remove the washer and replace it by a fresh one.
The cam D is a disc carried by a horizontal spindle D', traversing the valve
casing from front to back and which may be operated by a handle D', at either end
either from within or without the bath enclosing partition E each handle turning
over a fixed dial F marked with indications denoting the effect produced on the
valves by rotating the handle to different positions. The valve spindles are acted
on by diametrically opposite points of the cam face which is provided with
projections having inclined faces d' d' d d of such form and so situated relatively
to one another that both the valves may be opened either simultaneously and in
any desired relative proportion or separately by turning the cam to different
positions. The inclined faces of the one projection meet at a ridge but those d³
of the other are at the opposite ends of a long segment d³ which when in contact
with the end of a valve spindle holds it fully open. N is the outlet to bath.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described combined hot and cold water supply apparatus, com-
prising valves operated by a single rotary cam, the valves being seated against the
internal diaphragm of a casing constructed substantially as described and provided
with screw plugs for permitting the removal of the valves as described.
2. The herein described combined hot and cold water supply apparatus having
springs applied to the valve spindles external of the casing and in such manner as
to permit of the removal of the valves and spindles without dismounting the springs
or the cam by which they are operated as described.
Dated this 9th day of January 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.