CERTAIN IMPROVEMENTS IN METALLIC PACKING FOR STUFFING BOXES AND PISTONS
Year: 1856

page_text: LETTERS PATENT to Peter Armand le Comte de Fontaine Moreau, of
39, Rue de l'Echiquier, Paris, in the Empire of France, and 4, South
Street, London, Agent for Patents of Invention, for the Invention of
"CERTAIN IMPROVEMENTS IN METALLIC PACKING FOR STUFFING BOXES AND
PISTONS."A communication.
Sealed the 5th December 1856, and dated the 14th June 1856.
PROVISIONAL SPECIFICATION left by the said Peter Armand le Comte
de Fontaine Moreau at the Office of the Commissioners of Patents, with
his Petition, on the 14th June 1856.
I, PETER ARMAND le Comte DE FONTAINE MOREAU, of 39, Rue de l'Echiquier,
Paris, in the Empire of France, and of 4, South Street, London, Agent for
Patents of Invention, do hereby declare the nature of the said Invention for
"CERTAIN IMPROVEMENTS IN METALLIC PACKING FOR STUPPING BOXES AND PISTONS,"
to be as follows, that is to say:-
This Invention relates to an improved construction of metallic packing for
stuffing boxes and pistons, as represented in the accompanying Drawing in
section.
It consists of a series of metallic rings c, c, between which are placed the
steel plate springs e, c, shewn by a blue line. These springs serve to press the

page_text: metallic rings tight against the rod or cylinder. D is a washer resting upon a
steel spring. The gland B, when screwed down, presses the whole series of
rings together. E, piston, provided with the improved packing rings; F,
piston rod.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Peter Armand le Comte de Fontaine Moreau in the Grea
Seal Patent Office on the 13th December 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER
ARMAND le Comte DE FONTAINE MOREAU, of 39, Rue de l'Echiquier, Paris, in
the Empire of France, and 4, South Street, London, Agent for Patents of
Invention, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of June, in the year of our Lord One
thousand eight hundred and fifty-six, in the nineteenth year of Ier reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said Peter
Armand le Comte de Foutaine Moreau, Her special license that I, the said
Peter Armaud le Comte de Fontaine Moreau, my executors, administrators, and
assigns, or such others as I, the said Peter Armand lo Comte de Fontaine
Moreau, 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 "CERTAIN IMPROVEMENTS IN METALLIC
PACKING FOR STUPPING BOXES AND PISTONS," upon the condition (amongst others)
that I, tho said Peter Armand le Comte de Fontaine Moreau, by an instru-
ment 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 Peter Armand le Comte de Fontaine
Moreau, do hereby declare the nature of the said Invention communicated
to me, 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 annexed Sheet of Drawings, and to the figures and letters
marked thereon, that is to say:-

page_text: This Invention relates to an improved construction of metallic packing for
stuffing boxes and pistons, and consists in the employment of metallic rings,
formed of segments, and acted upon by springs, as herein-after described, by
means of which novel arrangement a better steam-tight fitting obtained than
hitherto.
Figure 1 of the accompanying Drawing represents a cross section of a
stuffing box fitted with the improved packing, consisting of metallic rings,
cach ring being formed of two segments, and acted upon by suitable springs
arranged as herein-after described; Figure 2 is a plan of the same with the
gland removed; Figure 3 is a segment of the inner ring; Figure 4 is a
segment of the outer ring; Figure 5 is a view, partly in section, showing the
position of the springs; Figure 6 is a section of part of a cylinder and piston,
with a modification of the improved packing applied; Figure 7 is a sectional
plan of the same.
A, Figure 1, is the stuffing box of the ordinary construction, in which are
placed the metallic packing rings B, E, shown in section. These rings, formed
of two segments, are composed of iron, brass, gun metal, or other metal. The
outer ring has a groove C, shewn in the segment, Figure 4, in which the
projecting part D of the inner ring E, Figure 3, is placed. The projecting
part D of the ring E is also formed with a groove E' to receive the steel plato
spring F when the rings are pressed together, as shewn in Figure 5. The
springs are rivetted or otherwise fixed by a stud pin G to the inner rings, and
their object is to force the inner packing rings into close contact with the
piston or other rod, so as to produco a steam-tight fitting. Tho stud pin G fits
in a hole formed by semicircular grooves I in the two segments composing the
outer ring, and serves to keep the inner ring in its proper position. A series
of these packing rings B, E, (the number being regulated by circumstances,)
are placed in the stuffing box, one upon the other, and may be made to rest
on a washer J, supported by a curved spring K, as represented in Figure 1.
The gland L, when screwed down, presses the whole series of rings together,
and keeps them in their proper position.
The piston A, Figures 6 and 7, is constructed with the metallic packing
rings, similar to those herein-before described. B are the exterior rings, which
press against the interior of the cylinder. Each spring is formed of four
segments, bebind which is an inner fixed ring c, provided with holes and
grooves, through which pass the stems D of the wedge pieces E. These wedge
pieces are acted upon by the springs F, so as to force the outer ring B against
the cylinder. The springs are fixed to the inner ring C, as before described.
G is the piston rod.

page_text: Having now described the nature of the Invention communicated to me,
and the manner in which the same may be carried into effect, I would have it
understood that I do not restrict myself to the precise details herein laid down;
but what I claim is, the method of constructing metallic packing for stuffing
boxes and pistons with segments of rings acted upon by suitable springs, in the
manner herein-before described, and represented in the Figures of the annexed
Drawing.
In witness whereof, I, the said Peter Armand le Comte de Fontaine
Moreau, have hereunto set my hand and seal, this Ninth day of
December, in the year of our Lord One thousand eight hundred and
fifty-six.
L' DE FONTAINEMOREAU. (L.S.)