AN IMPROVEMENT IN THE MANU- FACTURE OF DRAIN PIPES
Year: 1856

page_text: LETTERS PATENT to Frederick Kersey, of 5, Laurie Terrace, St. George's
Road, Southwark, for the Invention of "AN IMPROVEMENT IN THE MANU-
FACTURE OF DRAIN PIPES."
Sealed the 16th May 1856, and dated the 25th February 1856.
PROVISIONAL SPECIFICATION left by the said Frederick Kersey at
the Office of the Commissioners of Patents, with his Petition, on. the
25th February 1856.
I, FREDERICK KERSEY, of 5, Laurie Terrace, St. George's Road, Southwark,
do hereby declare the nature of.the Invention for "AN IMPROVEMENT IN THE
MANUFACTURE OF DRAIN PIPES," to be as follows:-
The object of this Invention is the constructing earthenware pipes, so as to
give additional facility for correctly laying such pipes, and for opening them in
case of stoppage. For these purposes, I make an ordinary whole socket pipe,
and while it is in a green state, I divide the socket and part of the plain pipe,
or it may be the plain end of the pipe, longitudinally, by a cutting wire, or
otherwise, for any required length, and then by a transverse cut, commencing
at the end of the longitudinal one, I separate a portion, which, when the drain
is laid, serves as a lid or cover, which can be removed when desired, or pieces of
similar forms to those obtained by thus dividing a socket pipe may be otherwise
moulded or formed. Pipes thus constructed I lay at intervals in a drain of
ordinary socket pipes, so that by removing the lids above described the state
of the drain may be ascertained, or a damaged pipe may be removed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Kersey in the. Great Seal Patent Office on the
22nd August 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
KERSEY, of 5, Laurie Terrace, St. George's Road, Southwark, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of February, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Frederick Kersey, Her special licence that I, the said Frederick
Kersey, my executors, administrators, and assigns, or such others as I, the said
Frederick Kersey, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention' for "AN IMPROVEMENT
IN THE MANUFACTURE OF DRAIN PIPES," upon the condition (amongst others)
that I, the said Frederick Kersey, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same
to be filed in the Great, Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frederick Kersey, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
The object of this Invention is the constructing earthenware pipes, so as to
give additional facility for correctly laying such pipes, and for opening them in
case of stoppage. For these purposes, I make an ordinary whole socket pipe,
and while it is in a green state, I divide tlie socket and part of the plain pipe,
or.it may be the plain end of the pipe, longitudinally by a cutting wire, or
otherwise, for any required length, and then by a transverse cut, commencing
at the end of the longitudinal one, I separate a portion which, when the drain
is laid, serves as a lid or cover which can be removed when desired, or pieces
of similar forms to those obtained by thus dividing a socket pipe may be
otherwise moulded or formed. Pipes thus constructed I lay at intervals in a

page_text: drain of ordinary socket pipes, so that by removing the lids, above described,
the state of the drain may be ascertained, or a damaged pipe may be removed.
Having thus stated the nature of my said Invention, I will proceed to
describe more fully the manner of performing the same.
DESCRIPTION OF THE DRAWING.
The Drawing shows a longitudinal perspective view of several pipes con-
structed according to my Invention. The pipes A are each formed by dividing
the socket and part of the plain pipe longitudinally and transversely before
burning the same; the pipes B have their plain ends divided longitudinally
and transversely before burning the same, and a portion of socket is made on
the moveable part B, in order when the parts B, B, of a pipe are put together
the moveable part may be rendered more secure. C is an ordinary drain
pipe, any number of which may be laid in succession, and then one or more
of the pipes A or B. Hence, whenever a pipe A or B is laid, by simply
raising the ground and lifting off the moveable part of such pipes A or B, the
state of the line of drain may be examined, and, if necessary, the parts may be
readily cleaned out without further disturbing the drain.
In witness whereof, I, the said Frederick Kersey, have hereunto set my
hand and seal, this Twentieth day of August, in the year of our
Lord One thousand eight hundred and fifty-six.
Witness,
S. CARPMAEL.
FREDERICK KERSEY. (L.S.)