AN IMPROVED METALLIC STUFFING BOX
Year: 1866

page_text: LETTERS PATENT to Victor Duterne, of No. 111, Boulevart de Vaugirard,
in the City of Paris, in the Empire of France, a Mechanician, for the
Invention of "AN IMPROVED METALLIC STUFFING BOX."
Sealed the 31st August 1866, and dated the 9th March 1866.
PROVISIONAL SPECIFICATION left by the said Victor Duterne at the
Office of the Commissioners of Patents, with his Petition, on the 9th
March 1866.
I, VICTOR DUTERNE, of No. 111, Boulevart de Vaugirard, in the City of
Paris, in the Empire of France, a Mechanician, do hereby declare the nature
of the said Invention for "AN IMPROVED METALLIC STUFFING Box," to be as
follows:-
The improved stuffing box or metallic packing, the subject of this Invention,
is intended, like that for which I obtained Letters. Patent in 1865 under the
> Number 1555, to replace advantageously all packing composed of vegetable
matters. It may be applied to all steam, air, gas, or hydraulic machines.
It is composed of rings formed of two equal segments which surround the rod
of the machine, and fill exactly the space existing between this rod and the
inner sides of the box called the stuffing box. These rings are made of

page_text: malleable metal composed of tin 20 parts, copper 5 parts, regulus of copper
(the product first obtained in the fusion of copper) 5 parts, and lead 20 parts
or thereabouts, which is run into blocks and rolled to the necessary form and
guage. The rods thus laminated are then wound on a mandrel of the same
thickness as the rod which is to be packed, and there remains but to saw
them to obtain segments ready to be fitted into position without retouching.
A triangular shape is that which I deem most suitable for these rods, but I
may give them any possible form. The bottom of the box is occupied by
arched washers made of steel and forming springs on which is placed a ring
called the bottom ring; the segments intended as a substitute for hemp
packing are then placed, these are covered by the stuffing box gland, this by
a ring or bridle, and this latter by a plate fixed to the box by two screw
threaded pins carrying nuts by which the packing may be tightened at
pleasure. Between the rod and the ring or bridle of the stuffing box gland
is left a small chamber in which is placed some material soaked with oil.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Victor Duterne in the Great Seal Patent Office on the
8th September 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, VICTOR
DUTERNE, of No. 111, Boulevart de Vaugirard, in the City of Paris, in the
Empire of France, a Mechanician, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing. date the Ninth day of March, in the year of our Lord One
thousand eight hundred and sixty-six, in the twenty-ninth year of Her .reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Victor Duterne, Her special licence that I, the said Victor Duterne, my
executors, administrators, and assigns, or such others as I, the said Victor
Duterne, 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 IMPROVED METALLIC
STUFFING Box," upon the condition (amongst others) that I, the said Victor
Duterne, 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

page_text: 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 Victor Duterné, do hereby déclaré 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,
reference being had to the accompanying Sheet of Drawing, forming part of
this my Specification, and to the figures and letters of reference placed
thereon, similar letters of reference denoting similar parts in each of the
.Figures respectively.
My improved stuffing box. or metallic packing is intended, like that for
which I obtained Letters Patent in the year 1865 under the No. 1555, to
replace with the greatest advantage all packing composed of vegetable matters.
This stuffing box may be applied to all steam, air, gas, or hydraulic machines
or apparatus. It is composed of segments forming by their union rings c
and c¹ (Figure 1), which surround the rod a and fill. the part previously
occupied by the hemp. These segments are of malleable metal composed
of tin 20 parts, copper 5 parts, regulus of copper (the product first obtained
in the fusion of copper) 5 parts, and lead 20 parts or thereabout, which is
run into blocks or pigs, and afterwards rolled to the necessary shape and
caliber. The rods or bars thus rolled are then wound on a mandrel u
(Figure 6), of the same thickness as the rod which is to be packed, and
there remains but to saw them in order to have segments ready to be fitted
into position without retouching. The bottom of the box 6 (Figure 1) is
occupied by arched steel washers e (shewn detached Figures 3 and 4), which
form spring and on which is placed a ring d termed the bottom ring. The
segments intended as a substitute for hemp are then introduced into the
box b, and arranged in two rows in the manner shewn Figure 1 of the
Drawing. The packing is completed by the stuffing box gland f, the ring 9,
and the top or covering plate h (part of which is shewn detached Figure 2);
screw threaded bolts or pins fixed in the thickness of the box 6 serve to
press or tighten the packing by means of the nuts and m; i is a chamber
which is filled with matters soaked with oil. One of the principal advantages
resulting from the special arrangement of my stuffing box is that in pro-
portion to the wear of the segmented rings c and c' (which is easily ascer-
tained by tightening the nuts), it is only necessary to add new rings, without
touching the old ones, to keep the stuffing box constantly in good order
at very little expense. The triangular form which I give to my rings,
combined with the arrangement of the segments which compose them,

page_text: ensures the completest hermetic closing by the simple effect of the steam
pressure. It is in fact evident that the segmented rings. being pressed the
one against the other, those which embrace the rod are constantly pressed
against it notwithstanding their wear, while those which are. placed in. an
.inverse direction press against the box. There is thus between each segment .5
.and between each segmented ring a slipping or "sliding favored by the
inclination of the parts in contact which constitutes the principle of 'my
Invention and its greatest merit. Although I have adopted a triangular
shape more or less inclined as being the most suitable, I nevertheless reserve
the right of using round or oval rings arranged precisely as those which I 1
have just described, and with which about the same result would be obtained.
I also wish it to be understood that I reserve the right of using hollow segments
like that.c", which I have expressly, shewn on the Drawing (at Figure 1),
in order to give more lightness to my stuffing box. It is evident that I can
increase or lessen not only the number of segments composing the rings but :1
also the number of these latter, and use rings split only at one place or entire
rings, always however in. combination with segmented rings. In this latter
¡case I should always make.my rings hollow like the segment c.
.
I therefore claim as being of: my Invention the metallic stuffing box such
as above described and illustrated on the annexed Sheet of Drawing, reserving
the right of modifying the same as above mentioned..>
. In witness whereof, I, the said Victor Duterne, have hereunto set my
hand and seal, this Seventh day of September, in the year of our
Lord One thousand eight hundred and sixty-six.
VICTOR DUTERNE.. (LS.)