IMPROVEMENTS IN DRAIN AND SEWER PIPES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said Charles Slagg at the Office
of the Commissioners of Patents on the 18th March 1882.
.
CHARLES SLAGG of Leeds in the County of York. "IMPROVEMENTS IN DRAIN
AND SEWER PIPES."
"
In laying pipes for sewers and drains it is difficult to make a good joint at the
bottom. It is difficult with small pipes, but with large ones it is almost impossible.
When the spigot end of a pipe has been inserted into the socket of the last pipe
laid, the workmen let it be there, it being too heavy to lift and adjust to the
proper height during the time the joint is being made under it. When spun yarn
is driven in, and the end of the pipe thus raised, the caulking splits the socket.
When cement or clay is used to make the joint, it is squeezed out by the weight
of the pipe, and the bottom of the pipe at the spigot end drops below the bottom
at the socket end of the adjoining pipe, forming an irregularity and obstruction at
each joint, which catches particles flowing with the sewage and thereby gradually
causes an accumulation of solid matter along the bottom of the pipe and so tends
to ultimately choke in the drain.
Now according to my invention I form a "rest" in the bottom of the socket,
which holds up the pipe, whilst the joint is being made.
The "rest" is so formed on the outer edge of the socket, as to allow the jointing
material to be made behind it, and continuous all round the lower half of the
pipe.
I provide a projecting piece or indicator at the crown of the pipe, which shows
when the "rest" is in its proper place at the bottom.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Slagg in the Great Seal Patent Office on the 18th September
1882.
"
CHARLES SLAGG of Leeds in the County of York IMPROVEMENTS IN DRAIN
AND SEWER PIPES
"
In laying pipes for sewers and drains it is difficult to make a good joint at the
bottom. It is difficult with small pipes but with large ones it is almost impossible.
When the spigot end of a pipe has been inserted into the socket of the last pipe
laid, the workmen let it lie there, it being too heavy to lift and adjust to the
proper height during the time the joint is being made under it.
When spun yarn
is driven in, and the end of the pipe thus raised, the caulking is liable to split the
socket.
When cement or clay is used to make the joint it is squeezed out by the weight
of the pipe, and the bottom of the pipe at the spigot end drops below the bottom
at the socket end of the adjoining pipe forming an irregularity and obstruction at
each joint which catches particles flowing with the sewage and thereby gradually
causes an accumulation of solid matter along the bottom of the pipe and so tends
to ultimately choke in the drain.
"rest
"
in the bottom of the socket,
Now according to my invention I form a
which holds up the pipe, whilst the joint is being made.
»
The "rest is so formed on the outer edge of the socket as to allow the jointing
material to be made behind it and continuous all round the lower half of the pipe.
I provide a projecting piece or indicator at the crown of the pipe which shows
when the "rest" is in its proper place at the bottom.
And in order that my invention may be more completely understood reference is
given to the accompanying drawings and to the letters and marks thereon.
DESCRIPTION OF DRAWINGS.
Fig 1 is a perspective view, and Fig 2 a longitudinal section of drain or sewer
pipe constructed according to my Invention.
a is the pipe and 6 the socket. The rest c is formed at or close to the edge of
the socket b to allow the jointing material to pass behind at d and to be made
continuous all round.
I provide a projecting piece e or indicator at the crown which shews when the
rest is in its proper place at the bottom
The spigot end of the pipes is passed into the socket and is supported on the
rest c as shewn in Fig 2.
Having now described the nature of my said Invention and described with the
aid of drawings how the same may be carried into practice I would have it under-
stood that I do not limit myself to the precise details or configuration of the
parts I have described and shewn as the same may be varied or modified without
departing from the nature of my said Invention, but what I do claim is :-
The arrangement, construction, and application of the rest c in the pipe
socket 6 and the indicator or projecting piece e substantially as and for
purposes herein setforth.
In Witness whereof, I, the said Charles Slagg, have hereunto set my
hand and seal this fifth day of September in the year of Our Lord one
thousand eight hundred and eighty two.