Improvements in Annular Metallic Packing.
Year: 1891

page_text: Date of Application, 8th Aug., 1891-Accepted, 3rd Oct., 1891.
COMPLETE SPECIFICATION.
Improvements in Annular Metallic Packing.
I, HERBERT WILLIAM MORLEY, of No. 54, Ashgrove, Bradford, in the County
of York, Engineer, 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 improvements in annular metallic packing, and its
object is to provide a self adjusting and durable packing of simple construction
capable of forming a tight joint in regard to both internal and external pressure
and particularly applicable for packing the piston rods of condensing steam
engines.
The said improvements consist in the employment of two flanged rings having
conical internal peripheries or faces tapering in opposite directions fitted with
segmental or annular packing pieces and an external spring tending to force said.
rings in reverse directions and thereby keep the packing picces tightly in position.
In the accompanying drawing Figure 1, represents a diametrical section of the
stuffing box of a steam engine fitted with iny improved packing, Figure 2, is a
cross section of the same on the broken line a, b in the former figure. Figure 3,
is an elevation of a portion of a piston rod with certain parts of the packing
mounted thereon.
Figures 4, 5, 6 and 7 are detail views of certain parts herein referred to.
The stuffing box A is provided with a loose face B in the ordinary way to
enable the packing to be introduced and is secured by two or more studs C. The
rings D and D' are of such a size that they pass readily into the stuffing box and
the spring E is introduced between their flanges d, d, Figure 4, is a separate view
of the ring D. The annular piece F is first introduced then the double packing
ring G, g, formed of six segmental pieces placed together so that the joints in
one ring come midway between the joints of the other as separately shown in
Figures 5 and 6, is placed against F and then the rings D and D having the
spring E between them are passed into the box with the taper inner face i of the
ring D surrounding the taper faces of the packing ring. The double packing
ring Gy, is now passed into the ring D with the taper periphery in the reverse
direction to the taper of the ring G, and the inner half of the packing is pushed
up to the position shown so as to more or less compress the spring E by the
annular piece which may form part of the face B when the latter is placed in
position.
It will be readily understood that the spring E tending to separate the rings D
and D will cause the conical inner faces of such rings to tighten on the packing
rings and so keep them constantly against the piston rod J. The rings G, g
preventing leakage in the one direction and G', g' in the other.
The segmental rings g and gl are provided to cover the joints in the rings G, G
and dowelse (Figures 5 and 6) keep them in position. The rings 9 and g¹ have
taper peripheries to engage the taper inner faces of the rings D and D'as the
rings G, Gare reduced by wear.
Instead of forming the rings C, G' and g' in segments they may be formed in
one piece and split or divided through one side as shown in Figure 7 to allow them
to be compressed by the inner taper peripheries of the rings D and D¹.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare what I
claim is :-
A compound annular packing having two pairs of packing rings with their

page_text: peripheries tapering in reverse directions fitted with taper rings and a spring
tending to tighten said taper rings, on said packing rings, substantially as herein
shown and described.
Dated this 7th dow of 1901
DRACUP & NOWELL,
Bradford Agents...