Protective Subway for Laying-in Supply Pipes for Water, Gas, or other Purposes.
Year: 1889

page_text: Date of Application, 3rd Oct., 1889
Complete Specification Left, 3rd July, 1890-Accepted, 6th Sept., 1890
PROVISIONAL SPECIFICATION.
Protective Subway for Laying-in Supply Pipes for Water, Gas,
or other Purposes.
JOSEPH JOHN PHILLIPS Gentleman 2 Zenoria Street Dulwich Surrey, do hereby
declare the nature of this invention to be as follows:-
The object of the present invention is to protect the branch gas or water supply
pipes leading from the mains in the roads to the consumers premises or other
purposes.
Frequent leakages occur to these pipes caused by heavy traffic [passing over the
roads resulting in
1. Loss to the company by leakage and in case of gas risk to both companies and
consumers.
2. Loss in searching for and repairing leakages.
3. Losses in repairing broken-up roadway and paving.
1
For this purpose I lay down a small subway made of stoneware or other suitable
material from the main to front of premises to be supplied, the branch supply pipe is
laid in this subway and connected with ferrule cock already attached to main by a
screw union joint which oan be easily disconnected when supply has to be cut off by
means of an inspection chamber I construct immediately over branch connection
with main.
Dated this First day of October 1889.
COMPLETE SPECIFICATION.
Protective Subway for Laying-in Supply Pipes for Water, Gas,
or other Purposes.
I, JOSEPH JOHN PHILLIPS, 2 Zenoria Street, Dulwich, Surrey, Gentleman, 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 :-
The object of the present invention is primarily to protect the branch gas or water
supply pipes leading from mains.in roads to consumers premises, but my invention is
also applicable for other purposes such as the protection of underground wires.
Frequent leakages occur in the above named pipes, caused by the heavy traffic
passing over the roads, and result in :-
(1.) Loss to the companies by leakage, and, in the case of gas, risk to both the
companies and the consumers.
(2.) Loss in searching for and repairing leakages.
(3.) Loss in repairing broken up roadway and paving.
According to my invention, which is designed with a view to obviate the disad-
vantages arising from such pipes being unprotected, I lay down a small subway, made
of stoneware, cast iron or other suitable material, froni the main to the front of the
premises to be supplied.
The branch supply pipe is laid in this subway and is connected with a ferrule cock
(already attached to main) by a screw union joint, which can be easily disconnected
when the supply has to be cut off, by means of an inspection chamber constructed
immediately over the branch connection with main.
In order that my invention may be thoroughly understood I. have appended the
accompanying sheet of drawings, which shows the application of my invention to
branch or service water and gas supply pipes. It will be understood from these
drawings that my invention is equally applicable to underground wires.

page_text: Fig. 1, of the accompanying drawings, is a section showing my protective subway.
Fig. 2 is a plan of the road, showing my protective subway in dotted lines.
Fig. 3 is a section, on an enlarged scale, of one of the inspection chambers herein-
before referred to.
Figs. 4, 5 and 6 are detailed views.
In these drawings similar letters of reference indicate corresponding parts.
A is the road. B is the pavement. C is the protective subway. I make the protective
subway in parts or sections, one end of which is enlarged or provided with a flange so
as to receive the other or smaller end, the parts or sections being suitably jointed, for
instance by cementing. I prefer to make the bottoms of the parts or sections flat so
that the subway may rest upon a prepared flat surface which may consist of concrete
or of any suitable road material. I may, if desired, cover the subway with a layer
of concrete and it may be of other section than that shown in the accompanying
drawings.
Within the subway C I place the branch or service gas or water supply pipe D
leading from the main. In Figs. 1 and 2 I have shown parts of two houses on
opposite sides of the road, the water supply to which is drawn from a main E on one
side of the road and the gas supply obtained from a main E on the other side of the
road. I prefer to place the water and gas mains E, E' under the pavement, and I
provide an inspection chamber at each of the junctions of the branch or service
supply pipes D and the mains E, E¹. The inspection chambers F are closed by
lids F, flush with the surface of the pavement, which I prefer to lock so that access to
the inspection chambers can only be obtained by an authorised. person. The branch
or service supply pipes are connected to the main's by means of a ferrule cock G and a
screw union joint. This arrangement allows of the supply being cut off at will. The
inner ends of the branch or service supply pipes pass through closing plates or end
pieces H placed at the inner ends of the last parts or sections of the subway.
closing plates or end pieces H, which are shown separately in Figs. 5 and 6, serve to
prevent the entrance of any vermin, such as rats, or any water, gas or effluvia into
those parts of the houses into which the pipes lead.
The
I prefer to slightly incline the subways from the houses towards the mains so that
any water leaking into the subways will flow towards the mains and can be removed
from the inspection chamber.
My invention is also applicable for use in those roads which are already constructed
or those in which the mains are placed in the roads.
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 :-
The protective subway, with inspection chambers, to serve as an enclosing conduit
for branch or service water and gas supply pipes and underground wires, substantially
as described herein and illustrated by the accompanying drawings.
Dated this 3rd day of July 1890.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.