Improvements relating to Packing Employed for Stuffing Boxes of Steam Engines, Pumps, and the like.
Year: 1887

page_text: Date of Application, 29th Apr., 1887
Complete Left, 21st Feb., 1888
Complete Accepted, 29th Mar., 1888
Improvements relating to Packing Employed for Stuffing Boxes of
Steam Engines, Pumps, and the like.
I, WALTER BETHELL of 5 Cambridge Terrace, Woolwich in the County of Kent,
Engineer, do hereby declare the nature of this invention to be as follows:-
In carrying out my Invention the bottom of the stuffing box is recessed to receive
a metal ring preferably of brass, surrounding the piston or other rod, said base ring
receives and carries on the top a tube or cylinder of fibrous or other material capable
of being pulped and which is compressed by hydraulic or other suitable pressure to
form a tube of the desired diameter to correspond with that of the rod to which it is
applied. The inner cylinderical surface of said cylinder of hard compressed pulped
material forms the packing-proper with which the piston rod works in contact. The
said cylinder of hard compressed pulped material is received in and surrounded by
an external thin metallic cylindrical casing. In order to take up the wear of the
hard compressed pulped material I make the enclosing metallic cylindrical casing in
two parts having recessed lap joints.
I introduce into the stuffing box a series of adjustable metal backing rings the
inner faces of which are brought to bear upon the external thin metallic cylindrical
casing enclosing the cylinder or tube of packing material aforesaid, as forming the
packing-proper, and on the top of said adjustable metal backing rings is a layer or
are layers of rubber or other suitable elastic packing on to which takes the usual
stuffing box gland fitted and adjustable in the ordinary manner.
Further I prefer to introduce on the top of the cylinder or packing proper afore-
said, between the inner face of the stuffing box and the ordinary gland an elastic
packing on to which takes a supplementary or additional gland.
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.

page_text: Steam Engines, Pumps, and the like.
I WALTER BETHELL of 5 Cambridge Terrace, Woolwich in the County of Kent,
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 :-
In carrying out my Invention the bottom of the stuffing box is recessed to receive
a metal ring preferably of brass, surrounding the piston or other rol as shewn in
Fig. 1 leiter (a) said base ring receives and carries on the top a tube or cylinder of
fibrous or other material capable of being pulped, and which is compressed by
hydraulic or other suitable pressure to form a tube or cylinder of the required
dimensions to correspond with that of the rod to which it is applied as shown in
Fig. 1 letter (b). The inner cylindrical surface of said cylinder of hard compressed
pulped material forms the packing proper with which the piston rod works in contact.
The said cylinder of hard compressed pulped material is received in and surrounded
by an external cylindrical casing.
In order to take up the wear of the hard compressed material I make the enclosing
cylindrical casing in two parts having recessed lap joints as shewn in Fig. 2 letter (c)
I further introduce into the stuffing box a series of adjustable metal backing rings as
shewn in Fig. 1 letter (d) the inner faces of which are brought to bear upon the
external thin metallic cylindrical casing enclosing the cylinder or tube of packing
material aforesaid as forming the packing proper, and on top of said metallic backing
rings is a layer or are layers of rubber or other suitable elastic packing on to which
takes the ordinary stuffing box gland fitted and adjustable in the ordinary manner.
Further prefer to introduce on the top of the cylinder or packing proper aforesaid,
between the inner face of the stuffing box and the ordinary gland an elastic packing
on to which takes a supplementary gland. I also claim the application of my invention
to the stern bush of the propeller shaft of steam ships. In adapting it to which I make
the aforesaid gland in halves so that I may thereby take up the downward wear of the
shaft.
Having thus fully described the nature of my invention and the manner of
performing the same I claim
The combination and application thereof in the aforesaid woman in