An Improved Application of Metallic Rings and Springs for Piston, Pump, and Gland Packings.
Year: 1888

page_text: Date of Application, 1st Oct., 1888
Complete Specification Left. 1st July. 1889-Accepted. 24th Aug.. 1889
PROVISIONAL SPECIFICATION.
An Improved Application of Metallic Rings and Springs for Piston,
Pump, and Gland Packings.
I JOHN ISRAEL HEMMINGWAY of Dixon Street Sheffield in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows
is
The object of this invention is by placing in each angle or corner of the ordinary
piston packing rings (for example say rings being the section of the letter [) a spiral,
overlap, or coiled spring formed into a ring or hoop of sufficient strength and length to
keep the packing ring to the cylinder side. When two rings are used a spring
placed in each ring as above described, these springs do not meet as a space is left
between then into which is placed a V shaped or wedge shaped sustaining ring, the
object of this ring is to force the springs apart and thereby firmly hold the packing
rings upon the faces of the piston and junk rings without putting more pressure upon
the cylinder side than is required.
In carrying out this invention into practice, which consists of two outer Packing
rings with inner flanges the section been similar to the letter [ two spiral or other
suitable springs are made to fit the inner diameter of each outer packing ring.
The object of these springs are firstly to expand the packing rings to the cylinder
side and secondly to act in the place of Bevels generally formed in the packing
rings, the springs are placed one in each packing ring and are forced into the
corners of the flanged packing rings by an independent inner sustaining ring, which
is made with two inclined planes, the section been similar to the letter V this ring...
is made so that the diameter is less than the inside of the outer packing ring
and is placed between the Top and Bottom springs, its action being to hold or keep
the springs in the corners of. the packing rings and to force by its wedge like
Faction the packing rings upon their faces.
The power of this inner ring can be increased or diminished by a simple arrangement
of a stud and spring which is placed at the opening of the inner ring it can be reduced
in diameter by simply screwing the nuts upon the stud or it may be increased in
diameter by unscrewing the nuts and the ring is forced open by means of a small
spiral spring upon the stud its ends pressing upon the ends of the sustaining ring.
The sustaining ring may be made. of Iron, Steel, Metal, Brass, or other suitable
material, and may be formed into the required. shape and diameter by Casting,
Forging, Rolling, or Turning as may be most suitable.
This invention is also applicable to all kinds of Piston Rods, Pumps, Valves &
glands, commonly called Stuffing Boxes.
In applying this invention to Stuffing Boxes a metallic box is made, the outside
diameter of which corresponds with the inside diameter of the stuffing box so that it
will slide into the same. This metallic box may be made with one or both ends loose
having holes though them nearly the size of the rod, the metallic packing rings are
made in segments of two or more parts, the section of the packing rings are of an angle
shape thus, into the angle of each ring or segment a suitable spiral
(preferable a round coiled spring) is fitted and a metallic V or wedge shaped ring is
made and placed between the springs to hold the springs into the angles of the
metallic rings and thus keep the Packing rings upon the faces or ends of the Boxes.
The packing rings may be made of Metal, Brass, or any other suitable material.
20th day of Santrinha 1000

page_text: COMPLETE SPECIFICATION.
An Improved Application of Metallic Rings and Springs for Piston,
Pump, and Gland Packings.
I JOHN ISRAEL HEMMINGWAY of Dixon Street Sheffield 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 :-
The object of my invention is to effect improvements in the application of
metallic rings and springs for piston, pump, and gland packings, and relates to
the metallic packings in connection with all types of engines, pump, or glands,
either worked by steam, gas, water, or other fluid pressure, and may consist of one,
or more packing ring, or rings, and springs of ordinary type and may be
applied to pistons having one or more outer packing rings, which ring or rings, may
be cut in one, two, or more places or parts. But that the novelty and utility of this
invention may be clearly understood I hereby as an example give several forms of
applying my invention to a piston, and I wish it to be clearly understood that this
invention is not limited to the precise details as herein set forth, and as illustrated,
because modifications or variations can be made therein without departing from the
general principles of the invention, and it should also be seen by refering to the
accompanying drawings, that several modifications, but all the same in principal are
.shown..
✓ In Fig. 1. sheet. 1. are shown piston packings which consists of two metallic outer
rings, having inner flanges the section been similar to the letter L. and marked (A. A.)
two. coiled springs B. B. are fitted inside the rings A. A. and an inner V or wedged
shaped ring C. (fitting between the springs B. B.) with an adjustable opening as
shown in Fig. 2. a stud or bolt (F.) and spring (G.) are for increasing or diminishing
the diameter of the ring C. Fig. 1.
si
In Fig. (3 & 4. the outer rings (A. A.) have two rings or hoops (B B) instead
of the coiled spiral springs shown in (Fig. 1. B B) these hoops or tube rings may
be in one, or more pieces with connecting stud or bolt F. and spring (G) as shown
(Fig. 4). The triangular sustaining ring C. with adjusting stud (F.) and spring (G.).
The differance in the construction shown is principally to illustrate the sustaining
ring (C.) in (Fig. 5 & 6) the angle been more accute will have greater resisting
power and better able to withstand a much greater pressure without adding more
friction upon the rings (AA) and the cylinder. (Fig. 7 & 8) show three hoops,
rods, or round spiral springs, or a combination of the various rings and springs
as herein described and illustrated.
I now purpose to describe the application of this invention for gland packings.
A box is made having holes in the ends for the rod, or ram, to work through the
outer diameter corrisponding with inside diameter of the gland or stuffing box, so
that the box, and packings, will slide over the rod and into the gland or stuffing box.
The packing which is composed of two rings or segments having flanges on one
edge the section being similar to the letter and marked (A. A.) as shown in
(Figs. 1. 2. 3.) sheet 2. Into the angles of these rings a spiral or other suitable
spring (BB. having a tendency to compress the rings (A A) upon the rod, or
ram, and a wedge shaped or other suitable sustaining ring (C) also having a
tendency to compress the packings to the rod, and force the rings (A_A) apart and
thus hold them upon the faces of. the box as illustrated in the various forms of
packings for pistons, which are also applicable for air pump packings.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and the best manner of practically carrying out the same by the aid of the
accompanying drawings I declare that what I claim is :-
The improved construction and application of metallic rings and springs for piston,
pump, and gland packings as herein fully described and illustrated.
Dated this 29th day of June 1889.
JOHN ISRAEL HEMMINGWAY.