Improvements in Water Closets.
Year: 1895

page_text: Date of Application, 6th Mar., 1895
Complete Specification Left, 3rd Jan., 1896-Accepted, 8th Feb., 1898
Improvements in Water Closets.
I, JOHN HENRY HAMILTON, of 71 Charlotte Avenue, Detroit, Michigan,
United States of America, Plumber, do hereby declare the nature of this invention
to be as follows:-
The invention relates to an improvement in water closets, of that kind known
commercially as siphon jet closets in which a jet of water is used to form a partial
vacuum in the water discharge pipe of the bowl, which starts the flushing, and this
is continued as long as the water is supplied, the amount of water being usually
governed by automatic devices in a tank over the bowl.
The invention particularly consists in the following particulars:
I use a bowl having an upwardly discharging short leg, and a downwardly
discharging long leg. In the long leg of the discharge from the bowl is a weir or
partition, through or beneath which, above the water level, is a normally open
restricted air passage leading into the upper part of the long leg of the discharge
pipe from the bowl, and which upper part I shall hereafter refer to as the "vacuum
forming chamber.'
Discharging into the vacuum forming chamber, directly or indirectly, is a water
jet. This may discharge directly into the top of the vacuum forming chamber.
or it may discharge at the bottom of the upwardly directed short leg of the siphon,
or jets may be used at both of these places.
In starting such a closet, the water flowing through the jets into the vacuum
forming chamber, forces the air out through the normally open restricted passage
before referred to, and thus creates the partial vacuum, which causes the water in
the bowl to flush the discharge passage.
Another feature of my invention is the construction of the long log of the
discharge passage in such a manner that it may lead directly back from the
bowl, where it is desired to have no soil pipes pass through the floor, but, instead,
pass through the vertical walls, and down therethrough.
In brief, this part of my invention consists of a siphon closet provided with a
continuous siphou discharge from the bowl, to a laterally or rearwardly discharging
elbow or nipple in rear of the bowl.
Dated this 20th day of Fohan & D 1905
Improvements in Water Closets.
1, JOHN HENRY HAMILTON, of 71 Charlotte Avenue, Detroit, Michigan,
United States of America, Plumber, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
40 ascertained in and by the following statement :—
This invention consists in the peculiar construction of the bowl and the discharge

page_text: passage increrrom, woereby the formation or the vacuum is 18cification, with a
minimum of water, and whereby the water chamber beneath the bowl is thoroughly
finshed further in the peculiar construction and arrangement of the water
passages whereby the after fill is carried to the bowl, all as more fully hereinafter
described.
Fig. 1 is a vertical central longitudinal section through a water closet embodying
the invention.
Fig. 2 is a side elevation thereof.
Fig. 3 is a longitudinal diagram section through a modified form.
A is the water supply pipe. B is the bowl. C is the passage connecting the
pipe A and the bowl. D is a downwardly extending flange in the bowl, forming a
trap in the bowl.
E is the discharge passage in the rear of the bowl. F is a weir or dam in said
discharge passage forming a water receptacle G, this weir being of a height to
maintain a normally open passage above the water level.
H is a trapped passage from the passage C having a jet I discharging into top
of passage E.
The operation of these parts is as follows: The water entering through jet I,
drives the air out of the passage E, and raising the level of the water in the
receptacle G until it touches the lower edge of the bowl scaling the outlet of the
passage E. The receptacle G, however, would not be properly flushed, as the seal
is not sufficient to maintain the siphonic action of the water, and much of the solid
matter would remain in that receptacle after each flooding, owing partly to the
depth of the receptacle G. To overcome this objection a wall is constructed
which forms a continuation of the rear of the bowl and extends down at an incline
to a point below the plane of the bottom of the bowl. By this means the
passage E is continued down into the receptacle G so that the movement of the
water and foreign matter will be forcibly continued through the receptacle G.
In the upper edge of the wall J is formed a small aperture K through which the
air is forced by the jet, before the trap is formed below the bowl. It will thus be
seen that as the water enters through the jet, the air is forced out of the passage E
through the aperture K and beneath the bowl, and quickly thereafter the passage
below the bowl is sealed by the incoming water and the siphonic action started
which will carry the contents of the howl below the wall J with the requisite force
to discharge all foreign matter from the receptacle. As soon as the water ceases to
flow into the receptacle the trap is broken and the air rushes in through the
aperture K preventing further siphoning.
In such closets the after fill from the tank in passing from the pipe A to the
bowl will mostly flow out through the passage H. This is objectionable as
sufficient water is not supplied to properly fill the bowl. 1 arrange the port H'
with its lower edgo above the bottom of the passage C, leaving a channel in said
passage below the port. This permits the after fill to flow uninterrupted to
the bowl.
I have shown the wall J in the nature of a partition or diaphragm. It is
evident that it may be made of any desired shape or construction, and while the
aperture K is shown as a port through this wall, it is evident that any restricted
aperture effecting communication from the vauuum forming chamber of the
discharge pipe from the bowl with the soil pipe at or near the water level in tho
false trap or auxiliary water receptacle would be the equivaleut. It is also
evident that while the most desirable place to locate the water jet is at the top of
the siphon forming chamber, this jet may be placed at other points to accomplish
the same result, that is to drive out the air in advance of the incoming water.
In modern fireproof buildings it is desirable to have the soil pipe discharge into
a pipo in the vertical partition walls instead of going through the floor, and in
such case I form a trap at the bottom of the vacuum forming chamber E and
arrange the upward and rearwardly discharging nipple M therefrom to which a
vertical soil pipe in the wall may be connected. In the diaphragm or partition N

page_text: between the vacuum forming chamber and this nipple, a restricted aperture K is
formed. If desired in addition to the jet I, the jets C and P may be added in the
bottom of the bowl and in the bottom of the trap at the lower end of the vacuUDI
forming chamber.
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 [
claim is t-
-
1. In a water closet of the kind described, the combination of the bowl, an
auxiliary water receptacle in the exit pipe from the bowl having a weir to form a
normally open passage above the water level, a partition extending into said
receptacle to form a trap having an opening above the passage over the water level,
and a water jet discharging into the exit pipe of the bowl.
2. In a water closet, the combination of the bowl having a siphon trap, a discharge
passage leading from said trap beneath the bowl, and counecting with the discharge
pipe, a water chamber formed beneath the bowl, having its overflow located
slightly below the bottom of the bowl, a wall depending from the bowl into the
chamber, an aperture in the wall above the water level, a water supply pipe, a
connection from said pipe to the bowl and to the top of the discharge passage
beside the bowl and a trap in said last named passage.
3. In a water closet of the kind described, the combination of the bowl, a
discharge pipe from the bowl councoting to the soil pipe, an auxiliary water
receptacle in the discharge pipe, a restricted normally open passage connecting
the vacuum forming chamber in the discharge pipe with the soil pipe at or near
the water level, and a water jet discharging into the discharge pipe of the bowl.
4. A siphon water closet, the outlet of which is sealed by means of a trap and
provided with apertures through the partition separating the longer leg of the
siphon from the discharge pipe, whereby said trap becomes untrapped after the
flushing ceases.
5. In a water closet of the kind described, the combination with the bowl, an
upward discharge passage therefrom forming the short leg of the siphon,
downward discharge passage from the top of said first nained passage a rearwardly
discharging nipple above the floor level at the bottom of the second named passage
and water jets and traps.
..
11
T
1000
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.