Improvements in After-service Devices for Flushing Syphonic Water Closets.
Year: 1899

page_text: Date of Application, 5th June, 1899
Complete Specification Left, 2nd Mar.. 1900-Accepted, 7th Apr., 1900
PROVISIONAL SPECIFICATION.
Improvements in After-service Devices for Flushing Syphonic Water
Closets.
We, J. & M. CRAIG, LIMITED, of Kilmarnock, Ayrshire, Fire Clay Manufacturers
and ROBERT HIGHET. Modeller, in the employment of said Firm, do hereby
declare the nature of this invention to be as follows:
-
This invention has for its object to provide a simple, efficient and inexpensive
after-service device for automatically filling the basin of a syphonic water closet
when the contents have been syphoned out by throwing in slops or from any other
cause
Under the invention a separate compartment of the supply cistern for the closet
is connected to the closet basin below the normal water level by a syphon pipe
whose short leg dips into said compartment whilst the long leg terminates in a
pocket or chamber attached to and which forms part of the basin or may be
simply an enlargement of the pipe itself. This pocket is full of water when the
trap of the basin is sealed, but when the water level in the basin is lowered from
any cause, as on syphonage due to throwing in slops, the water in the pocket
flows out into the basin and thus produces a partial vacuum in the syphon pipe
connected to the separate chamber of the cistern whereby the contents of said
chamber are syphoned out and discharged into the closet basin to fill it to the
normal level. The separate chamber is refilled through a small opening in a
partition separating it from the cistern. To prevent the syphon pipe being
thrown out of action in the event of the closet basin being emptied before the
cistern is full a small air pipe is connected to the top bend of the syphon pipe and
dips into water, the said air pipe permitting of the discharge of air from the
syphon pipe and allowing the water to rise in the pocket at the lower end of the
latter. The connection between the cistern and closet being on the basin side
of the trap the escape of noxious gases towards the cistern is avoided.
Dated this 2nd day of June 1899. ·
7
.
"
WALLACE FAIRWEATHER, .
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow.
Agent for the Applicants,
Improvements in After-service Devices for Flushing Syphonic Water
Closets.
"
We, J. & M. CRAIG, LIMITED, of Kilmarnock, Ayrshire, Fire Clay Manufacturers
and ROBERT HIGHET. Modeller, in the employment of said Firm, do hereby
Pria 811

page_text: declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention has for its object to provide a simple, efficient and inexpensive
after-service device for automatically filling the basin of a syphonic water closet
when the contents have been syphoned out by throwing in slops or from any other
causes.
The invention is illustrated by the accompanying drawings, Fig. 1 being a
vertical section through the cistern and closet basin on the lines and y-y,
respectively, of a syphonic water closet provided with the improved after-service
device, and Fig. 2 is a plan of the same.
Under the invention a separate compartment A' of the supply cistern A for the
closet is connected to the closet basin B below the normal water level C by a
syphon pipe D whose short leg dips into said compartment A', whilst the long
leg terminates in a pocket or chamber E attached to and which forms part of
the basin B or may be simply an enlargement of the pipe itself. This pocket E
is full of water when the trap of the basin B is sealed, and when the water level O
in the basin B is lowered from any cause, as on syphonage due to throwing in
slops, the water in the pocket E flows out into the basin and thus produces ?
partial vacuum in the syphon pipe D connected to the separate chamber A¹ of the
cistern A whereby the contents of said chamber are syphoned out and discharged
into the closet basin B to fill it to the normal level C. The separate chamber A¹
is refilled through a small opening A2 in a partition A3 separating it from the
cistern A. To prevent the syphon pipe D being thrown out of action in the
event of the closet basin B being emptied before the cistern A is full a small
air pipe F is connected to the top bend of the syphon pipe D and dips into water
in a pocket G in the cistern, the said air pipe F permitting of the discharge of
air from the syphon pipe D and allowing the water to rise in the pocket E at the
lower end of the latter.
The connection between the cistern A and closet B being on the basin side of
the trap the escape of noxious gases towards the cistern A is avoided.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we wish it to be
understood that we are aware that it has already been proposed to provide syphonic
water closets with an after-flush by means of a separate compartment in the supply
cistern connected by a syphon to the closet basin below the water level and we do
not claim such construction generally, but we declare that what we claim is:-
In a syphonic water closet, the combination with the closet basin, of a pocket
formed on or in proximity thereto below the water level, a syphon pipe con-
nected to said pocket and to a compartment in the supply cistern separated from
the usual supply chamber and an air pipe connecting the highest point of the
syphon pipe and a water pocket in the cistern, substantially as and for the
purpose set forth.
Dated this 1st day of March 1900
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow.
Agent for the Applicants,