Improvements in Metallic Packing for Glands and in Springs for same.
Year: 1889

page_text: Date of Application, 18th Feb., 1889
Complete Specification Left, 18th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in Metallic Packing for Glands and in Springs
for same.
I, WILLIAM ROADHOUSE Norfolk Park, Sheffield in the County of York, Engineer
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce a simple and effective metallic packing of
few parts and great durability.
It consists of a brass, or other metallic collar, cut diagonally from end to end, in
three or more places, to allow its being pressed to the rod by a circular spring,
and glutted or stopped by a cut ring being let into the end face of the collar,
nearest to the steam, or other pressure, so as to stop or glut the partings of the
collar; the whole being held to the pressure by a spring tightness, at right angles to
the circular spring.
The circular spring may be a sheath spring, tapered to fit the collar, or a combination
spring hereinafter specified.
In its application to an ordinary gland or stuffing box, 1 make a truc face at the
bottom of the inside of the stuffing box, for the end of the collar and the glut or
stopping ring contained therein to press against, to form a steam or pressure
tight joint. The glut or stopping ring may be made any section to suit the different
working pressures, and may be made in one or more parts.
In the circular recess to hold the glut, or stopping ring I form a projection or
steady pin, to prevent the cut part of the glut or stopping ring turning opposite to
any of the cuts or partings of the collar.
The glut; or stopping ring, being let into, or capped by the sections of the
collar; is compressed to the rod by the circular spring which compresses the sections
of the collar.
The collar, or packing, I make taper, for convenience in putting on the spring.
T
1511
T 1
1000
COMPLETE SPECIFICATION.
Improvements in Metallic Packing for Glands and in Springs
for same.
I,. WILLIAM ROADHOUSE Norfolk Park, 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 this. invention is to produce an effective, steam tight, metallic
packing for the glands of Piston rods, and similar rods, having great durability, and
consisting of few parts.
It consists of a collar of brass or of other suitable metal, divided into sections, the
cuts or divisions being made either in line with its central axis or diagonally
thereto, so as to permit of the sections being held to the rod by spring pressure.
It is held to the gland. face or other bearing surface by an elastic or spring
washer, and is glutted or stopped by a cut ring let into the end face of the divided
collar.
The annexed drawings represent an improved packing made according to my

page_text: views.
Fig. 1, is a vertical section of the entire packing, and gland.
Fig. 2, plan of same with part of the top-plate removed.
Fig. 3, elevation of packing, half being shown with spring removed.
Fig. 4, plan of underside of packing.
In the construction of a packing according to this invention, and in its application
to the stuffing box of an ordinary cylinder cover such as shown in the drawings,
I prefer to use a removable lining or gland, but this is not an essential part of
the invention.
A, is the removable gland, having a collar B, and an internal shoulder C, and fitting
into the stuffing box D, on the cylinder cover.
The face of the internal shoulder C, is made perfectly true for the bottom face of
the packing to rest upon.
1 make the packing E in the form of a collar fitting upon the piston rod F, the
outside being tapered from one end to the other, for convenience in putting on the
spring J; it is divided into any desired number of sections, by cuts or divisions G,
made either diagonally, or in line with its longitudinal axis, the one illustrated is
divided into four sections, as may be seen in Fig. 4.
I prefer to make the dividing cuts of such a form, that each section will have
two angular edges next the piston rod, such edges being contiguous to corre-
sponding edges upon the next sections. By this configuration of the adjacent
edges, the sections are not only retained in their relative positions, but are are
enabled to close or contract upon the piston rod F, as their inner face is worn away.
H, is a glut ring (cut into any desired number of parts) and let into a corresponding
annular recess formed in the face of the sections, and is provided with a stop I to
prevent it turning out of position.
The said sections are held tightly to the piston-rod, by means of a coiled or
twisted spring J, which 1 find effective, but I do not confine myself to this form
of spring, as a simple coil of flat spring similar to clock spring will answer.
The packing consisting of the sections with the glut ring and encircling spring
are pressed firmly down upon the true face of the shoulder C, by the top plate K,
acting against an intermediate elastic washer or spring plate L.
This clastic washer may be made in various ways, the one shown being a
washer having a number of springs M fixed upon one of its sides, which are
compressed when the top plate or cover plate K is screwed down, and cause the
said washer to hold the packing firmly but with elastic pressure against the
shoulder C.
Although I have shown only one arrangement of my improved packing, it will
be obvious to those acquainted with such mechanical work that it can be applied
in other ways without departing from the spirit of my invention, which consists
in the collar divided into sections and having a glut or stop ring let into the end
face of the said sections; thus the packing may be used without the separate gland A,
if desired, and rest upon a true face formed in the stuffing box, or it may be used
against an outside face, without being enclosed.
I prefer to make the glut ring H, of a rectangular cross section, but other cross
sectional configurations may be used.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1-In the construction of a packing for Piston rods, and other like rods, the
combination of a collar divided into sections, with a cut glut ring, let into, and
level with the face of the said sections, for the purpose, aud substantially as herein-
before described and shown.

page_text: 2-In packings for Piston rods, and for other like rods, the combination of a
divided collar E, a glut _ring H, let into the collar, an encircling spring J, and an
elastic or spring washer L, all constructed and arranged substantially as hereinbefore
described and illustrated.
Dated the 16th day of November 1889
ROBT. F. DRURY, Fel. Inst. P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.