A New and Improved Packing Ring or Rings for Pistons, Buckets, and the like.
Year: 1895

page_text: Date of Application, 16th Dec., 1895
Complete Specification Left, 19th Aug., 1896-Accepted, 16th Dec., 1896
PROVISIONAL SPECIFICATION.
A New and Improved Packing Ring or Rings for Pistons, Buckets,
and the like.
We, ERNEST WILLIAM BATT, Engineer, and ToM GRIBBLE Engineer, both
of 64 Shaftesbury Avenue, in the City and County of Bristol do hereby declare
the nature of this invention to be as follows :-
:
An improved piston or packing ring or set of rings made up of one central ring
and two side rings.
The central ring is wider and thicker than the side rings and is reduced in
diameter at the two edges in such a manner that the side rings may exactly fit into
and upon the reduced diameter forming together a parallel set.
The rings are each one parted directly or indirectly or diagonally across, and
when in position on the piston block or bucket the joints are separated as may be
convenient or desirable.
The side rings are secured in place, with the purpose of preventing rotation, by
means of studs fitted to the centre ring suitably, and holes to engage the said studs
are formed in the sides of each of the said side rings.
The whole is truly machined and fitted suitably to the purpose, and is made of
steel, cast iron, gun metal, or any suitable alloy.
This combination of three rings may be fitted to any existing piston or pump
plunger or bucket.
The side rings may be divided into two parts, forming each part a complete ring,
if desired.
Dated this 14th day of December 1895.
A New and Improved Packing Ring or Rings for Pistons, Buckets,
and the like.
We ERNEST WILLIAM BATT, Engineer, and TOM GRIBBLE, Engineer, both
of 64 Shaftesbury Avenue in the City and County of Bristol 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:—
Our invention is for a new metallic packing for pistons and pump buckets, and
the like. The packing is composed of three rings forming a set, and the rings are
disposed as to a central ring, or main ring; and two side rings mounted upon the
said main ring.
The main ring is reduced in diameter at its outer edges as herinafter shown, and
upon the said reduced parts the side rings are accurately fitted.

page_text: The main ring and the side rings are cut completely through at a point in each
ring, and the direction of the cut is at any desired angle to the plane of the ring.
The side rings are rotated upon the main ring after each has been cut, so that
the points of severance do not coincide.
Studs are fitted into the maid' and side rings to secure the rings in any desired
position relatively to each other in the plane of the said rings: that is to say, to
prevent the rings rotating upon each other and thus causing the points of severance
to coincide.
This set of packing rings may be fitted to any ordinary piston block and junk
ring, and is, in the case of large pistons; supplied with an auxiliary spring to assist
the natural expansion of the rings when the said rings are worn.
The said rings are truly machined and fitted for the purpose named, and may be
made of any suitable material, preferably of cast iron, steel, or brass; and may be
of any suitable proportion one to the other. The said set of packing rings form a
steamtight or watertight joint in any piston, or pump bucket.
Referring to the accompanying drawings, Fig. 1 is a part section and part
elevation of a piston showing the said rings in position between the junk ring d, and
the piston block c, the main ring is shown at a, with the side rings 6 b.
In the part elevation, Fig. 1. the point of severance in the main ring is
shown at a¹.
Fig. 2 is a side elevation of the set of rings apart from the piston, and shows the
main ring a, side rings b, and the points of severance a¹, 6, 6. The auxiliary
spring for large rings is shown at f.
Fig. 3 is a cross section through the set of rings at g, h, Fig 2. The main ring
at a, the side rings b, b, and stud or studs e, for preventing rotation of the rings.
Fig. 4, is an elevation of a pump bucket fitted with our improved packing rings,
and similar letters of reference indicate the same parts in each figure.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
1. In a steam piston, pump bucket, or similar mechanism; the combination of
three rings accurately fitted, cut across, and studded as described.
2. In a steam piston, pump bucket, or similar mechanism; the combination
with a main ring shouldered at its outer edges, of two parallel rings fitted
accurately upon the said shoulders, adjustably, and secured with studs substantially
as described.
3. In a steam piston, pump bucket, or similar mechanism; the combination of
three rings as described, to form an elastic packing substantially as shown and
herin set forth.
Dated this 10th 1-
SA1000