IMPROVEMENTS IN THE MANUFACTURE OF D TRAPS FOR WATERCLOSETS AND OTHER LIKE PURPOSES
Year: 1873

page_text: LETTERS PATENT to William Gascoyne, of Leamington, in the
County of Warwick, Builder, for the Invention of "IMPROVEMENTS
IN THE MANUFACTURE OF D TRAPS FOR WATERCLOSETS AND OTHER LIKE
PURPOSES."
Sealed the 6th June 1873, and dated the 11th February 1873.
PROVISIONAL SPECIFICATION left by the said William Gascoyne at
the Office of the Commissioners of Patents, with his Petition, on
the 11th February 1873.
I, WILLIAM GASCOYNE, of Leamington, in the County of Warwick,
3 Builder, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF D TRAPS FOR WATERCLOSETS AND OTHER LIKE
PURPOSES," to be as follows :—
Hitherto D traps have been made in several pieces which have been
united by means of solder; but it has been found that the joints are
often imperfect, and that the solder soon becomes defective in con-
sequence of the action of the urine upon it.

page_text: Now my Invention consists in making D traps in one piece of lead
or other metal without the use of solder, whereby all possibility of
imperfect joints is prevented, and a cheap and durable trap obtained.
The manner in which my Invention is carried into effect is as fol-
lows I make the inside core or pattern of metal instead of sand as
heretofore, and I build it up of a number of pieces in such manner that
when the trap has been cast these pieces can be separated and taken out
of the trap. The pieces must of course be of such shape as when put
together to correspond with the form and size of the interior of the trap.
They are made to fit into each other by dovetail or other joints, and to
wedge one into another as found necessary, and when the trap has been
cast are removed, one at a time, some through the dip pipe and some by
the outlet of the trap.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Gascoyne in the Great Scal Patent Office:
on the 11th August 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
GASCOYNE, of Leamington, in the County of Warwick, Builder, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of February, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Gascoyne, Her special licence, that I,
the said William Gascoyne, my executors, administrators, and assigns, or
such others as I, the said William Gascoyne, 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 "IMPROVEMENTS IN THE MANUFACTURE
OF D TRAPS FOR WATERCLOSETS AND OTHER LIKE PURPOSES," upon the condition
(amongst others) that I, the said William Gascoyne, my executors or
administrators, by an instrument in writing under my, or their, or one

page_text: 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 William Gascoyne, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
Hitherto traps have been made in several pieces which have been
united by means of solder, but it has been found that the joints are
often imperfect, and that the solder soon becomes defective in con-
sequence of the action of the urine upon it.
Now my Invention consists in making D traps in one piece of lead
or other metal without the use of solder, whereby all possibility of
imperfect joints is prevented, and a cheap and durable trap obtained.
The manner in which my Invention is carried into effect is as fol-
lows: I make the inside core or pattern of metal, instead of sand as
heretofore, and I build it up of a number of pieces in such manner that
when the trap has been cast these pieces can be separated and taken out
of the trap. The pieces must of course be of such shape as when put
together to correspond with the form and size of the interior of the trap.
They are made to fit into each other by dovetail or other joints, and to
wedge one into another as found necessary, and when the trap has been
cast are removed, one at a time, some through the dip pipe and some by
the outlet of the trap.
Traps made according to my Invention are perfectly smooth inside, no
solder being used.
Another great advantage resulting from my mode of manufacture is
that I am enabled to improve the form of the trap. In traps made by
hand and soldered in the ordinary way the dip pipe extends two inches
below the water line, and is only one inch from the back and sides of
the trap, which always adds to the liability of the trap getting stopped
up; but with my mode of manufacture the dip pipe may be made to
form the back of the trap, and the sides of the pipe may be solid with
the sides of the trap, thereby leaving no space for deposit, and allowing

page_text: a full waterway equal to the size of the outlet pipe. This will be
understood on reference to the annexed Drawings, which represent a
trap made in this manner.
Among other advantages gained by my mode of manufacture, I may
mention that as the trap is made of one material the expansion and
contraction are less destructive, and that the trap is of uniform thickness
throughout, while those made in the ordinary manner being generally
beaten out of sheet lead are frequently of insufficient thickness at some
parts and quickly wear out.
In witness whereof, I, the said William Gascoyne, have hereunto set
my hand and seal, this Ninth day of August One thousand eight
hundred and seventy-three.
Witness,
DAVID PARker.
WILLIAM GASCOYNE. (L.S.)