AN IMPROVED MODE OF JOINING PIPES
Year: 1854

page_text: LETTERS PATENT to Amable Hippolyte Petit, of Paris, France, and of
4, South Street, Finsbury, London, Gentleman, for the Invention of
"AN IMPROVED MODE OF JOINING PIPES."
Sealed the 10th October 1854, and dated the 28th July 1854.
PROVISIONAL SPECIFICATION left by the said Amable Hippolyte Petit at
the Office of the Commissioners of Patents, with his Petition, on the
28th July 1854.
I, AMABLE HIPPOLYTE PETIT, of Paris, France, and of 4, South Street,
Finsbury, London, Gentleman, do hereby declare the nature of my Invention
of "AN IMPROVED MODE OF JOINING PIPES" to be as follows:-
My Invention consists in a new mechanical arrangement for joining pipes
employed for the conveyance of water or gas.
In the accompanying Drawing, Figure 1 represents a longitudinal section
of two pipes joined; Figure 2, side elevation of same; Figure 3, longitudinal
section of the corresponding ends of two pipes partly joined; Figure 4, cross
section thro' the joint.
The ears H & J are cast with the pipes, and are united by an iron hold fast
C, by means of iron pins D, E. A vulcanised caoutchouc washer K, placed
between the pipes at the point of junction, completes the joint.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Amable Hippolyte Petit in the Great Seal Patent Office on
the 26th January 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, J, AMABLE
HIPPOLYTE PETIT, of Paris, France, and of 4, South Street, Finsbury, London,
Gentleman, send greeting..
WHEREAS. Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of July, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Amable Hippolyte Petit, Her special license that I, the said Amable
Hippolyte Petit, my executors, administrators, and assigns, or such others as
I, the said Amable Hippolyte Petit, 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, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "AN IMPROVED MODE OF JOINING PIPES," upon the condition (amongst
others) that I, the said Amable Hippolyte Petit, 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 Amable Hippolyte Petit, 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 fol-
lowing statement thereof, reference being had to the Drawing bereto annexed,
and to the figures and letters marked thereon, that is to say:―
My Invention consists in the application of a washer of, some elastic or
compressible material between the meeting points of pipes for conveying liquids
or gases, and in the employment of a peculiar arrangement of lugs, hinges, or
clasps, herein-after described, for keeping the said washer, tightly compressed
and form a perfect joint.
Figure 1 is a vertical section of two pipes joined according to my In-
vention; Figure 2, a vertical section of the same, shewing the action of
joining; Figure 3 is a plan, shewing the two pipes joined; Figure 4, a section

page_text: of the pipe A, from N to O. The pipes have at one end an overlapping part,
and at the other end a part for receiving the corresponding overlapping of the
pipo to be joined.
:
The iron claws C and C' serve to
The pipes have lugs H and J, Figure 1.
unite the said lugs, and are fixed by means of iron pins D and E, and D' and E'.
A vulcanized india-rubber washer K is interposed and compressed between
the meeting points of the two pipes to complete the joint. To unite the pipes
the tube B is raised, the washer K is placed over the pipe A, the claw C is
then set in position and fixed by means of the pins D and E; by lowering the
tube B, forming lever, the washer is compressed and the junction effected. To
render the junction perfect, the claw C underneath, must be closed and fixed
by the pins D' and E', in a similar manner to the claw C. In this operation
the weight of the tube B is a sufficient lever to compress the washer, and
by pressing at the extremity of the pipe the action of the lever is multiplied
without any expence.
The distance between the orifices in the claws C and C¹ is calculated so as
to compress the washer K of a determined amount, and the washer shewn at
Figure 2 changes its form under compression, as shewn at Figure 1. The
washer K is made, by preference, of vulcanized or alkaline caoutchouc,
although other suitable matters, such as gutta percha, leather, wood, lead,
cement, tow, may be employed for its composition.
The principle above described may be applied in various ways, and various
modifications of the same are herein-after shewn.
Figure 5 shews an arrangement for employing three, or a larger number of
lugs, the form and dimensions of which may also be varied.
Figures 6, 7, and 8 shew various forms of fastenings, Q, S, which are adapted
on the lugs P, R, susceptible of replacing the arrangements of claws, pins, and
lugs, shewn at Figures 1, 2, 3, and 4.
Figures 9, 10, and 11 shew in vertical sections various arrangements of
fastening with a collar F, Figure 12, or with a lug G, Figure 13, fixed by
means of screw bolts X, Figure 10, or pins U, with keys V, Figure 11, for
compressing and enclosing a washer.
Having thus described the nature of my said Invention, and the manner
of carrying the same into effect, I would have it understood that I do not
confine myself to the precise details herein laid down, reserving to myself
the right of modifying the same; but what I claim as my Invention is,
the forming a perfect joint for uniting pipes or tubes for conveying liquids and
gases, by means of a washer of an elastic or compressible material, enclosed

page_text: and tightly held between the meeting points of pipes by an arrangement of
lugs, hinge, or clasp, as herein-before described and referred to in the several
Figures of the Drawing.
In witness whercof, I, the said Amable Hippolyte. Petit, have hereunto
set my hand and seal, this Twenty-third day of January, in the year of b
our Lord One thousand eight hundred and fifty-five.
H. PETIT. (L.S.)