Improvements in Metallic Facking.
Year: 1894

page_text: Date of Appl cation, 24th Apr., 1894
Complete Specification Left, 20th Dec., 189-Accepted, 2nd Feb., 1895
Improvements in Metallic Facking.
I, FREDERICK ARTHUR IVES of Grant's Pass, in the County of Josephine,
and State of Oregon, United States of America, Machinist, do hereby declare the
nature of this invention to be as follows:-
This invention relates to packings more especially designed for piston rods, valve
stems, etc., and the invention consists essentially of a coil forming the packing and
having uncut ends forming steam-tight bearing faces, and made of a suitable set
material which has sufficient tensile strength for closing the coil, and is sufficiently
soft to form a good bearing surface for the rod.
On one of the uncut ends of the coil is arranged a longitudinally-extending pin
which engages a correspondingly shaped recess formed in the bottom of the box and
a similar pin extends from the other uncut end and engages a correspondingly
shaped recess on the inner face of the gland which fits loosely on the rod."
The gland is provided with an angular shoulder engaged by a corresponding
shoulder formed internally on the nut screwing on the threaded portion of the box
or casing. The faces of the unent ends are seated snugly on the bottom of the box
or casing and the inner face of the gland respectively, whereby steam-tight joints
are formed between the coil, the bottom of the casing, and the gland.
In order to tighten the coil on the rod the operator engages the outer end of the
gland by a tool to hold it in position while unscrewing the nut and then turns the
gland to tighten the coil on the rod after which the nut is screwed up to firmly
engage the shoulder of the gland, the latter being meanwhile securely held in
place.
If the improvement is applied on large stuffing boxes then the uncut ends of the
coil are provided with two or more pins engaging corresponding recesses in the
bottom of the casing and in a collar fitted loosely in a recess formed on the inner
face of the gland. On the opposite face of the collar are arranged pins fitting
into segmental recesses arranged in the gland next to the recess on the inner face
thereof.
In the segmental recesses are placed coil springs pressing with their free ends on
the pins so as to make a yielding connection between the collar and the gland and
consequently between the latter and the coil. The nut screws on the casing and
engages the gland in the same manner as above described.
It will be seen that by this arrangement the coil can be firmly pressed in contact
with the rod so as to form a tight joint at the same time establishing a yielding
connection between the coil and the gland held in place by the nut so as to permit
the gland to give slightly whenever it is necessary.
Dated this 24th day of April 1894.

page_text: Improvements in metaшo Рacking.
I FREDERICK ARTHUR IVES of Grant's Pass, in the County of Josephine
and State of Oregon, United States of America, Machinist do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
This invention relates to an improved metallic packing which is more especially
designed for piston rods, valve stems etc.
The invention consists essentially of a coil forming the packing and having uncut
ends forming steam-tight bearing faces.
The invention also consists of certain parts and details, and combinations of the
same, as will be fully described hereinafter and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar letters of reference indicate corresponding parts in
all the figures.
Figure 1 is a sectional side elevation of the improvement;
Figure 2 is a face view of the coil;
Figure 3 is a sectional side elevation of the improvement as arranged for large
sized stuffing boxes;
Figure 4 is a face view of the spring pressed gland for the modified form shown
in Figure 3; and
Figure 5 is a face view of the collar employed in connection with the same.
The packing, as illustrated in Figure 1, is provided with a stuffing box casing A,
secured in the usual manner on the cylinder head, steam. chest, etc., and is formed
with two bores A¹ and A³, of which the smaller bore A' forms a passage for the
piston rod, valve stem or other rod B. In the larger bore A' is placed a packing
formed of a coil C having uncut ends C¹ and C³, and made of a suitable set material
which has sufficient tensile strength for closing the coil, and is not sufficiently soft
to form a good bearing surface for the rod B.
On the uncut end C₁ of the coil C, is arranged a longitudinally-extending pin C³,
engaging a correspondingly-shaped recess A³ formed in the bottom of the casing A,
and a similar pin C extends from the other uncut end C³ and engages a corre-
spondingly shaped recess D¹ formed on the inner face of the gland, D, fitted loosely
on the rod B.
:
The gland D is provided with an angular shoulder D³, engaged by a corre-
sponding shoulder E' formed internally on the nut E, screwing on the threaded
portion of the casing A. The faces of the uncut ends C¹ and C are seated snugly
on the bottom of the casing A, and the inner face of the gland D respectively,
whereby steam-tight joints are formed between the coil, the bottom of the casing A,
and the gland D.
In order to tighten the coil C on the rod B, the outer end of the gland D is held
in position while unscrewing the nut E by means of a suitable tool such as a
spanner and the gland D is then turned by the spanner to tighten the coil C on the
rod B, after which the nut is screwed up to firmly engage the shoulder D* of the
gland, the latter being meanwhile securely held in place by the spanner.
.
If the improvement is applied on larger stuffing boxes, as shown in Figures 3
and 4, then the uncut ends of the coil Care provided with two or more pins C
and C', of which the pins C engage corresponding recesses in the bottom of the
casing A, and the other pins engage corresponding recesses F in a collar F
fitted loosely in a recess D³ formed on the inner face of the gland D. On the
opposite face of the collar F are arranged pins F' fitting into segmental recesses D'
arranged in the gland D* next to the recess D', see Figure 4.

page_text: In the segmental recesses D' are placed coil springs G, pressing with their free
ends on the pins F³, so as to make a yielding connection between the collar F and
the gland D, and consequently between the latter and the coil C. The nut E*
screws on the casing A, and engages the gland D' in the same manner as above
described relative to Figure 1.
It will be seen that by this arrangement the coil C³ can be firmly pressed in
contact with the rod B', so as to form a tight joint, at the same time establishing a
yielding connection between the coil and the gland D held in place by the nut E',
so as to permit the gland to give slightly whenever it is necessary.
It will be seen that this packing is very simple and durable in construction, and
is readily applicable to large or small stuffing boxes.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. A metallic packing provided with a coil having uncut ends forming steam-
tight bearing faces, substantially as described.
2. A metallic packing provided with a coil having uncut ends forming bearing
faces, and pins extending from the faces of the said ends, substantially as
described.
3. A metallic packing, comprising a coil having uncut ends provided with pins,
of which the pins at one end engage recesses in the fixed casing, a gland having
recesses engaged by the pins in the outer ends of the coil, and a nut screwing on
the casing and engaging the said gland to hold the latter in place, substantially as
described.
4. A metallic packing comprising a casing, a coil held in the said casing and
provided with pins engaging recesses in the bottom of the casing, a gland abutting
on the said casing, a out for holding the gland in place, and a yieldingly mounted
collar in the said gland and connected with the said coil, substantially as shown and
described.
Dated this 20th day of December 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.