Improvements in Flushing Apparatus for Water Closets, Drains, and the like.
Year: 1888

page_text: Date of Application, 20th Dec., 1888
Specification Accepted, 5th Feb., 1889
COMPLETE SPECIFICATION.
Improvements in Flushing Apparatus for Water Closets, Drains, and
the like.
I, DAVID GRAY CAMERON, of 22 Paris Street, Palace Road, Lambeth, in the
County of Surrey, Sanitary 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 has reference to that kind of flushing apparatus for water closets,
drains &c. in which each time a handle or pull is operated to set the apparatus in
action a discharge of flushing water is effected and when the handle or pull is
released an after flush or discharge of water takes place for the purpose of sealing or
trapping the outlet to the soil or drain pipe, and my invention has for object to
simplify the construction of such apparatus and thereby cheapen its production.
In flushing apparatus according to this invention the "after
"
flushing chamber
is placed below the main flushing chamber and in free communication with the
water discharge opening and with the discharge pipe of such chamber which pipe
is made of smaller cross sectional area than the said discharge opening. The
arrangement is such that when the main flushing chamber is being emptied, part of
the water discharged therefrom enters the after flushing chamber for subsequently
producing the after flush, whilst the remainder of the water passes through the
discharge pipe to the flushing pipe. The water inlet opening to the main flushing
tank, and also the discharge openings from this chamber and from the after flushing
chamber are controlled by lift valves operated by levers or arins secured upon a shaft
to which the operating lever arm handle or pull is connected.
A valve controlled by a float, serves to control the admission of water to the
apparatus.
In the accompanying sheet of illustrative drawings
Fig. 1 is a longitudinal vertical section, and
Fig. 2 a transverse section of flushing apparatus constructed according to this
invention.
1 is a tank provided with a cover 2, a water inlet pipe 3, an overflow pipe 4, and
with a horizontal partition 5 and a vertical partition 6. These partitions divide the

page_text: tank into two chambers or compartments, viz., a float chamber 7 containing a float 8
for controlling a water inlet valve 9, and a main or first flushing chamber 10 having
an inlet opening 11 controlled by a lift valve 12, and a discharge opening 13
controlled by a lift valve 14. 15 is an after flushing chamber provided with a
discharge opening 16 controlled by a valve 17 and with a tube 18 that extends
upward through the main flushing chamber 10 to the air space at the top of
the tank.
The after flushing chamber which is below the main flushing chamber, is in free
communication with the discharge opening 13 as shewn, and carries a discharge
pipe 19, the diameter of which is smaller than the discharge opening 13, so that
when the water within the main flushing chamber 10 is dischargd by the lifting of the
valve 14 part of the water so discharged will pass into the after flushing chamber
whilst the remainder will pass into the discharge pipe 19 and horizontal conduit 20
to the flushing pipe 21.
The discharge valves 14 and 17 are operated by rods 22 that are connected to
lever arms 23 and 24, respectively fixed on a shaft 25, to which is secured the
operating lever or handle 26. The rods 22 each work through a link or stirrup 22ª
carried by its corresponding valve and each is provided with a collar 22, the
arrangement being such that when the rod rises it does not lift the valve until the
collar thereon comes in contact with the stirrup, but on the downstroke the valve
falls with the rod. To the lever arm 24 is also connected a rod 12ª for operating
the inlet valve 12.
With the construction described it will be seen that when the operating lever 26 is
pulled down the valves 12 and 17 will be closed against their seats whilst the
valve 14 is still closed; and that by the further pull of the lever the valve 14 will
be raised and allow the contents of the main flushing chamber to be discharged, as
herein before mentioned. When the operating lever is released the lever arms 23
and 24 will move in the opposite directions under the action of a weight 28 on the
lever arm 23, closing the discharge valve 14 and afterwards raising the valve 12 and
the after flush valve 17.
The main flushing chamber 10 will then be again filled whilst the contents of the
chamber 15 will be discharged into the conduit 20 and flushing pipe 21 and produce
the after flush for the purpose hereinbefore mentioned.
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 I do not
claim generally the production of an after flush but what I do claim is :-
1. In flushing apparatus of the kind herein referred to providing in connexion
with the first or main flushing chamber an "after" flushing chamber constructed and
arranged in such a manner that the water discharged from the main flushing chamber
is divided, part thereof constitnting a first or main flush whilst part is caused to
enter the said after flushing chamber to be utilized as an after flush on the opening of
an after flush valve substantially as hereinbefore described.
2. My improved flushing apparatus constructed arranged and operating substantially
as hereinbefore described with reference to and shown in the drawings annexed.
Dated this 20th day of December 1888.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.