Improvements in and connected with Metallic Packings for Piston Rods and Valve Spindles of Steam Engines and the like.
Year: 1897

page_text: Date of Application, 5th Nov.,
1007
7007
Complete Specification Left, 15th July, 1898-Accepted, 20th Aug.,
1898
Date u Application, JLN NOV., 007
Complete Specification Left, 15th July, 1898-Accepted, 20th Aug., 1898
Improvements in and connected with Metallic Packings for Piston
Rods and Valve Spindles of Steam Engines and the like.
I, RICHARD HARGRAVES, Engineer, of 8, Rock Mount, Blackburn, in the County
of Lancaster, do hereby declare the nature of this invention to be as follows:-
This invention has for its object the provision of better means for allowing
the cases containing the packing to float on piston rods and valve spindles in
any direction and to oscillate on the same rods in any direction on either a
horizontal or vertical axis as the case may be, thus allowing the packing boxes
or cases to adjust themselves to rods or spindles which have worked out of line
in any direction by wear & tear.
Also to improve the metallic packing inside the packing box or case.
According to this invention a collar is formed on the circumference at the end
of the packing case next to the end of the cylinder. Against this collar a gun-
metal ring is placed, flat at one side and provided with a spherical surface at
the other side. On this spherical surface a ring made of suitable metal, and
round in section is placed. Both these rings being pressed against a brass
bush in the neck of the outer gland casing by means of springs abutting against
the end of the case containing the metallic packing. The outer end of the
packing box being provided with an ordinary gland with studs for pressing up
the packing as it wears.
Another way in which I accomplish my object is to form on the cylinder end
of the packing box a portion of a sphere on which one or two rings are fitted.
These rings to have flat sides, and the outer end one forced up against the end
of the neck of the outer gland casing block, by means of springs as before.
named.
The metallic packing will consist of two Babbit metal rings, each sawn through
on one side, and these rings coned one into the other, also two gunmetal rings,
between which will be placed a flexible packing consisting of turnings or shav-
ings of Babbit metal. The whole being pressed together by means of the gland
at the outer end of the packing box or case.
Dated this Fourth day of November 1897.
Improvements in and connected with Metallic Packings for Piston
Rods and Valve Spindles of Steam Engines and the like.
I, RICHARD HARGRAVES, Mechanical Engineer, of 4, Richmond Terrace, Black-
burn, in the County of Lancaster, do hereby declare the nature of this invention,
D
071

page_text: and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
-
This invention has for its object the provision of better means for allowing
the cases containing the packing to float on piston rods and valve spindles in
any direction and to oscillate on the same rods in any direction on a horizontal
or vertical axis as the case may be thus allowing the packing cases to adjust
themselves to rods or spindles when they are working out of line in any direction
due to wear and tare.
Also to improve the metallic packing inside the packing boxes or cases.
According to this invention a collar A. see Fig. 1, is formed on the circumfer-
ence at the end of the packing case B next to the end of the cylinder. Against
this collar A a gun metal ring C is placed flat at one side provided with a
spherical surface on the other side. On this spherical surface a ring D made of
suitable metal and round in section is placed. Both these rings being pressed
against a brass bush E in the neck of the outer gland casing F by means of
springs G abutting against the end of the case B containing the metallic packing.
The outer end of the packing box B being provided with an ordinary gland I
with studs for pressing up the packing as it wears.
Another way in which I accomplish my object is to form on the cylinder end
of the packing box B, see Fig. 2, a portion of a sphere, on which one or two
rings J and K will be fitted. These rings to have flat sides and the outer one
forced up flat against the end of the neck of the outer gland casing block F,
by means of springs as before named.
The metallic packing will consist of two Babbit metal rings L and M, each
sawn through on one side and the rings coned one into each other: also two
gunmetal rings 0 and P between which will be placed a flexible packing R
consisting of turnings or shavings of Babbit metal. The whole being pressed
together by means of the gland I and gland studs at the outer end of the packing
box or case B.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is;
1st. The ring D upon which the packing case B will oscillate in any direction
from the axis of the piston rod substantially as described and shewn in Fig. 1
on drawing No. 1.
2nd. The combination of collar A and the rings C and D with the springs G
substantially as described and shewn in Fig. 1 on drawing No. 1.
3rd. The combination of the two Babbit metal packing rings L and M, and
the flexible packing R consisting of Babbit metal turnings or shavings with
the two gun metal rings O and P substantially as described and shewn in Fig. 1
on drawing No. 1.
4th. The combination of the collar formed on the packing case B with the
rings J and K, or with the ring J only substantially as described and shewn
in Fig. 2 on drawing No. 2.
Dated 5th November 1897.