Improvement in Metallic Packing for Piston Valve, and Feed, Pump Rods.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvement in Metallic Packing for Piston Valve, and Feed,
Pump Rods.
JOHN THOMAS HEDLEY 3 Rede Street Newcastle-on-Tyne Northumberland do
hereby declare the nature of this invention to be as follows:-
The Improvement of Mettallic Packing which consists off outside rings which are
in two segments, and at the joints springs are inserted to keep the rings together for
building the packing around the rod, as shown in Fig. (2). Fig. (1) is a section
through A. B. showing the springs in position. The springs are made fast to one
segment with a screw. A pin is in each end of the other segment for the spring to
hook on.
The notch is to lift the springs over the pin to release the segments when
necessary. Segments 2, 3, 6, and 7, are inside rings which fit the rod, and
1, 4, 5, and 8, are outside rings which fit the stuffing box. A turn of Asbestos goes
underneath No. 8 ring, and in some cases springs might be inserted at the top of
No. 1 ring.
Dated this 19th day of Man 1005
COME LEIE DIECIFICATION.
Improvement in Metallic Packing for Piston Valve, and Feed
JOHN
Pump Rods.
THOMAS HEDLEY Brassfinisher 3 Rede Street
Newcastle-on-Tyne
Co. Northumberland 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 :-
My Invention relates to Improvement and Application of Metallic Packing for
Piston, Valve, and Feed Pump Rods as shown in the Accompanying Drawning.
1, 4, 5, and 8, are outside rings and are in two segments which are preferable made
of Gun Metal, and fit the stuffing box, and sufficiently large in diameter of hole to
keep clear of the rod when vibrating, and at the joints springs are inserted which
keep the rings in position as shown in (A B). Fig. (1) is a section through (A B)
showing the springs in position. The object of the springs is that when the packing
is screwed up in the stuffing box, or case, the springs allow the outside rings to
tighten and prevent the steam from passing behind the outside rings and the
stuffing box. And it facilitates the formation of the packing around the rod before
being inserted into stuffing box as showning in Fig. (2). The springs are made
fast to one segment with a screw, and a pin in each end of the other segment
Pine 871

page_text: for the springs to hook on. The notch (G) is to lift the springs over the pin to
release the segments when necessary. Fig. (3) are inside rings 2, 3, 6 and 7 which
are formed in two or more segments and made to fit the rod. Fig. (3) is a plan
showing inside rings in three segments with lapped joints and fitted steam tight
which prevent the steam passing down the rod, and are made of Anti-friction Metal,
and are kept in position by outside rings 1, 4, 5, and 8. (H) is a space to allow for
wear. In ring (1) I insert springs to give the required compression as shown in Fig. (2).
Fig. (D) is a floating ring that goes next the neck-bush marked (C) and is made
to fit the rod, and the outside diameter less to allow for play as shown in Fig. (2).
Fig. (2) is a set of Metallic Packing in stuffing box, or case numbered as they have
to be formed around the rod on Gland (E) before being screwed up, and the
compression on which is inch as shown. A turn of soft packing may be used under
No. 8 ring for Lubrication purposes, or an Auxillary Gland (F) as shown and
Illustrated in Accompanying Drawing.
"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 ":
(1) In Metallic Packing is outside rings which are in two segments with springs
inserted, substantially, and for the purpose herein, before described and Illustrated
in Drawning.
(2) The Arrangement and Combination of Metallic Packing as herein, before
described with reference to Fig. (1, 2) and (3) of the Accompanying Drawing.
Dated this 19th day of September 1897.