A TOTAMO POR THRILLAR DRAINS
Year: 1853

page_text: LETTERS PATENT to Felix Paulin Rovère, of 4, Wellington Street,
Strand, in the County of Middlesex, Civil Engineer, for the Inven-
T
A TOTAMO POR THRILLAR DRAINS"
Sealed the 28th April 1854, and dated the 31st October 1853.
0 SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Felix Paulin Rovère in 'the Great Seal Patent
Office on the 28th April 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I.
FELIX PAULIN ROVERE, of Wellington Street. Strand, in the County of
5 Civil Engineer, send greeting.
WHEREAS Her mest Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of October, in the
year

page_text: of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Feli Paulin Paulin Rovère, Her especial
license that I, the said Felix Paulin Rovère, my executors, administra-
tors, and assigns, or such others as I, the said Felix Paulin Rovère, 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, my Invention of "IMPROVEMENTS
IN JOINTS FOR TUBULAR TUBES," upon the condition (amongst others) that
I, the said Felix Paulin Rovère, by an instrument in writing under
my hand and seal, 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 Felix Paulin Rovère, do hereby
declare the nature of the 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, reference being had to the Sheet of
illustrative Drawings hereunto annexed, and to the figures and letters
of reference marked thereon:
The nature of this Invention consists in the substitution of an
oblique splay for the rectangular longitudinal section of the joint at
present in use. By reference to the accompanying Drawings, Figures
1 and 2, the difference will be made manifest. In the first the line of
the joint a, b, is at right angles to the surface c, d, of the drain; the con-
sequence is, that when settlement or any other cause takes place to alter
the inclination of the lower part of the joint opens, as shown at a, b, e, f,
Figure 3, and offers a stoppage to any article of a solid nature brought
down by the sewage. A straw in such a case is sufficient, by sticking
in the crevice, to begin the formation of a stoppage in the tube by first
offering a resistance to the more solid portion of the refuse; by degrees
accumulation of matter takes place and the drain becomes choked.
The difficulty of keeping drains laid in the usual way at the same incli-

page_text: nation throughout the length of laying has been found practically
impossible, in consequence of the settlements that are constantly taking
place, in towns where buildings have been raised, with less or more
attention paid to the soundness of the foundations on which the super-
structures of the streets have been raised. In order to keep the joint
as perfect as possible, even after the effect of settlement and the partial
opening of the lower part of the drain, I introduce an inclined joint, of
which the one represented at g, h, Figure 2, offers an example; by
this means the crevice a, b, e, f, shewn in Figure 2, is prevented, and
the means at present allowed for the accumulation of filth and solid
refuse guarded against; see Figure 4. It is necessary I should state
here that I in no way confine the shape and configuration of the longi-
tudinal section of my drain or pipe to the form shown in the Drawing,
as the inclination of the splay or bevil of the joint may vary in a variety
of ways (a few examples are given at Figures 2, 5, 6). But what I
confine the nature of my Invention to is, the introduction of the
"wedgeular" section with the oblique splays or bevils for the joints,
instead of the present "square" section. I therefore claim the splay or
bevil joint at any angle whatsoever with the longitudinal side or axis
of the tube, pipe drain, or sewer, as substituted for the "square" or
rectangular longitudinal section of the longitudinal section at present
in use.
In witness whereof, I, the said Felix Paulin Rovère, have here-
unto affixed my hand and seal, this Twenty-eighth day of April,
in the year of our Lord One thousand eight hundred and fifty-
four.
D
Witness,
JOHN GEDGE,
Patent Agent,
F. P. ROVERE. (L.S.)
4, Wellington Street South,
Strand, London.