IMPROVEMENTS IN to be as STUFFING BOXES FOR PISTON RODS AND OTHER PARTS OF MACHINERY follows
Year: 1885

page_text: "
I SAMUEL HURFORD SPARKES of Hill View Wellington Somerset Mechanical
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN
to be as
STUFFING BOXES FOR PISTON RODS AND OTHER PARTS OF MACHINERY
follows:-
"
This invention has for its object improvements in stuffing boxes for piston rods
and other parts of machinery.
According to my invention I so arrange and construct a stuffing box that it may
be rotated whilst in oporation, thereby I provent unequal wear and ensure a tight
joint with less pressure on the packing than in stuffing boxes of ordinary con-
struction.
I make the stuffing box separate from the cylinder cover or other part upon
which it is supported. I interpose a loose metal ring between the two and the
surfaces I have truly formed so that a steam tight joint is maintained whilst the
one part revolves on the other. The stuffing box is held in its place on the cover
by means of a flanged ring and by springs abutting upon this ring.
I use coiled springs surrounding studs passed through holes in the ring and
screwed into the cover. The abutments for the springs are nuts screwed upon the
outer ends of the studs.
Rotary motion is conveniently imparted to the stuffing box by means of a worm
wheel keyed upon it and engaging with a worm on a rotating axis.
Or in place of this arrangement to impart motion to the stuffing box it may be
rotated by other suitable means.
D

page_text: Improvements in Stuffing Boxes for Piston Rods and other parts
of Machinery.
I, SAMUEL HURFORD SPARKES of Hill View, Wellington, Somerset, Mechanical
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN THE
CONSTRUCTION OF STUFFING BOXES and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention has for its object the improved construction of stuffing boxes,
whereby the friction on the rod is much reduced, and the rod itself is prevented
from wearing unevenly or becoming scored or grooved.
In order to attain these advantages the stuffing box is made entirely separate,
instead of being cast unto the cylinder cover or any other part, and while the
engine or other machine to which it is attached is in motion, the box with the
packing and gland is caused to slowly revolve around the rod.
In order that my invention may be clearly understood I will now describe the
drawings.
DESCRIPTION OF DRAWINGS.
Figures 1 and 2 are a section and elevation of my improved stuffing box.
a. is the rod passing through the cylinder cover d.
b. is the stuffing box which is held in position and pressed unto the cylinder
cover by the recessed ring e. This ring e. is held in position by the studs g.
Around each stud is a spring h. which pressed down upon the ring e. by the
nut k, thus securing a steam tight joint between the bottom of the stuffing box
and the cylinder cover.
On the outside of stuffing box is keyed a wheel j. by which, or any other
suitable means, the whole apparatus can be made to rotate. is the space for
packing.
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
The making of the stuffing box separate and causing it to rotate around the rod.
? ་
Dated this ninth day of September 1885.