Improvements in Syphon Flushing Cisterns or Water Waste Preventers.
Year: 1891

page_text: Date of Application, 23rd Dec.. 1891
Complete Specification Left, 15th July, 1892-Accepted, 20th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Syphon Flushing Cisterns or Water Waste
Preventers.
I, THOMAS WILLIAM TWYFORD of Hanley, in the County of Stafford, Manu-
facturing Sanitary Potter, do hereby declare the nature of this invention to be as
follows:-
This invention pertains to syphon flushing cisterns or water waste preventers, of
that class in which a piston like lower end or lower part, of a movable bell, works
or rises and falls vertically within an annular chamber or recess, commonly called
a well, and located or fitted within the bottom of the flush box, which has directed
upwardly from the middle of the said well, a stand pipe proceeding vertically
upwards, and terminating above the plane of the top of the said flush box.
There are many disadvantages attendant upon flushing cisterns of this class,
consequent upon some of them not being able to fully empty the flush boxes, and
others, in consequence of the same being liable to become fouled, through the
interposition of foreign matters between the moving parts, hence the possible
derangement and uncertain working of the same.
By my invention, the working parts of the cistern are considerably simplified
in their construction, their number diminished, the same easily fitted, and when the
cistern is in use, the said parts are not liable to become deranged or inefficient in
their working, and further, the flushing is sensitive, semi-silent, and rapid in its
action.
In carrying out my invention, I take an ordinary shaped tank or flush box, with
the middle of its bottom provided with a shallow well or sinking, preferably
cylindrical in figure, and having directed upwardly from the middle of it, a stand
pipe, with the upper end slightly belled, and coming a little above the plane of the
top edge of the said tank or flush box.
Surrounding the stand pipe is a bell, or an elongated and inverted tubular shaped
vessel, with an outwardly directed flange or piston formation at its lower end,.
which works piston like within the interior of an open ended short cylinder or
drum annulus, fitted within the well or sinking, arranged within the bottom of the
tank or lush box, as aforesaid.
The lower edge of the said short cylinder or drum annulus, is gapped or corru-
gated to admit of the easy flow of water from the back of the cylinder, as the
same only fits loosely into the well, so that the whole of the water within the tank,.
is drained off to the underside of the bell by the atmospheric pressure exerted upon.
it during the flushing.
The inside of the bell is of larger diameter than the outside of the stand-pipe.
leaving an annular space between the said parts, and flowing space between top
of the latter, and inside crown of the former, whilst the piston formation or
annular flange at the foot of the bell, is of a size which will freely work within the
drum annulus or short cylinder, which stands some inches above the top of the
well, wherein it rests and easily fits.
The bell flange has feet or studs upon its underside, so as to lift the same slightly
from the bottom of the well upon which it rests.
Thus, it will be understood, that the bell, with its cognate parts, rests within,
and upon the bottom of, the tank well, whilst the flange, or piston formation of it,
works within the drum annulus or short cylinder, which forms a supplementary
chamber, for the initial displacement of the water for the starting of the flush.

page_text: The standpipe is affixed by a collar lower portion, passing through a hole in
the middle of the sinking, and there affixed by a lock-nut or union upon the
underside.
The bell is picked up by the hooked ends of fulcrumed arms or levers, engaging
with or under trunnion studs, directed from the two opposite sides of the bell,
and which arms or levers may be of the compound order, and with the inner or
bell lever counterpoised to lift the bell, in order to place the same in a position for
forcing, after each operation.
:
The other arm of the compound lever, is taken to its acting position also by the
weight of the inner section to which it is connected.
The cistern is also fitted with ball float and other accessories common to this
class of cistern.
Instead of a compound lever I may employ a simple lever of the third order, or
a lever jointed to an outstanding bracket, and with a pull connected to the arm
between fulcrum and point of picking up.
OPERATION.
The working of the lever by the pull, depresses the bell, and causes its piston
foot, or lower end to slide or traverse from top to bottom of the drum annulus,
hence the displacement of water, and the forcing of the same up the inside of
the bell, which then rises above the top of the stand pipe, and flows over the
top, and down the inside of the same, which removes the air from the interior
thereof, thereby creating a partial vacuum, and the initial starting of the flush,
which is accelerated and completed, as the air from the down pipe leading from
the stand pipe, is removed by the downwardly flowing water.
Dated this 22nd day of December 1891.
THOMAS WILLIAM TWYFORD,
By Henry Skerrett,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Syphon Flushing Cisterns or Water Waste
Preventers.
I, THOMAS WILLIAM TWYFORD, of Hanley, in the County of Stafford,
Manufacturing Sanitary Potter, 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 the wells, or the well or forcing chamber parts, of
a certain class of syphon flushing cisterns, ei. that class of cisterns, having a
bell, with a piston or plunger end, which works within a recess, formed or sunken
within the bottom of the flush box.
Figure of the accompanying drawings, represents in longitudinal vertical
section, a flushing cistern, provided with a loose well or forcing chamber, according
to my improvements.
The piston or plunger end, with rubber tipped feet of the hell, is shown resting
at the bottom of the recess in the flush box.
Figure 2 represents a plan of Figure 1.
Figure 3 is an elevation of the loose or attachable and detachable well or forcing
chamber, and
Figure 4 is a vertical section of the same, while
Figure 5 is a plan of Figure 3.
a is the flush box, is a stand-pipe, resting at the bottom of the recess or flush
box well a², and with the upper or mouthed end 62, coming above the top edge a³,

page_text: forcing well d, which rests within the flushing box well a².
The combined bell and piston part c, cª³, has rubber tipped feet c³, so as to
lift the same, for the water clearance, on the same being down, as shown in
Figure 1, whilst the forcing loose well d, has inlet water holes or clearances d',.
open bottom d³, open top dª, and with outside clearance lugs d³, for centralizing
the position of the said forcing well d, within the flush box well.
By having the well d, of smaller diameter than the well a³, an annular clearance a*,
is left between the inside walls of the one, and the outside walls of the other, and
downwardly through which said space, water flows from the cistern, during the
operation of flushing.
The bell is lifted by the fore part e', of the lever e, jointed at e², engaging
under the opposite trunnion snugs c, on the pulling of the end e³, by a pull or
other chain e, and from which it will be seen that the bell has to drop to start the
flushing.
ACTION.
The releasing of the combined bell and piston, after being lifted, forces, by its
own weight, a portion of the water contained under it, and within the forcing
well d, up the interior of the bell, and over the top of the standpipe, hence the
removal of the air from the said standpipe, immediately followed by the flushing
operation.
Figure 6 represents a cistern, provided with my new or improved attachable and
detachable forcing well, and provided with lever arrangements, whereby flush is
performed by first action, that is to say, the lever lifts water in the bell, to start
the flush, by the direct pull of the chain.
a is the flushing cistern, a² the flushing cistern well, b is the standpipe, c is the
bell, with its lower termination, having a flange end c, with rubber tipped feet c³,
which neutralizes concussion on the bell being dropped.
d is an open top and bottomed forcing well, with centralizing and distance lugs d³,
and clearances d². e is a lever, jointed at e², and with its inner forked end e',
taking upon opposite trunnions ce, whilst the other end e³, carries a counterpoise
weight ee is the pull lever, jointed to and carried by a bracket e, and which
said lever is connected at its inner end e, by a link e, to the back arm e³, of
the lever e, so that by pulling the said lever, by a pull or other chain, the
bell is raised by a first action, whereby the flushing is started, consequent upon
the forcing of the liquid contained within the lower part of the forcing well, up
the interior of bell and over the open top of the standpipe.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
First In the forcing wells of syphon flushing cisterns, employing or using in
connection with a cistern or flush box, or with a cistern of the type as described in
Figures 1 and 2, of a loose annular ring, or open top and bottomed chamber d,
with inlet holes, clearances, or inward water-way passages, as set forth in
Figures 1 to 5.
Secondly-In the forcing wells of syphon flushing cisterns, employing or using
in connection with a cistern or flush box, or with a cistern of the type as described
in Figures 1 and 2, of a loose annular ring, or open top and bottomed chamber d,
having lugs, clearances, and inward water-way passages, as set forth in
Figures 1 to 5.
Thirdly :—In a second or reverse action syphon flushing cistern, the construction,
arrangement and combination of the parts as described and set forth in Figures 1
and

page_text: Fourthly In a first action syphon flushing cistern, the construction arrange-
ment and combination of the parts as described and set forth in Figure 6.
Dated this 13th day of July 1892.
THOMAS WILLIAM TWYFORD,
By Henry Skerrett,
6, Livery Street, Birmingham, Agent for Applicant.