Improvements in or Connected with Packing for Piston Rod Stuffing Boxes and other like Purposes.
Year: 1888

page_text: Date of Application, 28th Dec., 1888
Complete Specification Left, 27th Sept., 1889-Accepted, 2nd Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in or Connected with Packing for Piston Rod Stuffing
Boxes and other like Purposes.
1, JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex,
Gentleman do hereby declare the nature of this Invention which has been communi-
cated to me from abroad by Joseph Marie Guibal of 48 rue de Bondy Paris in the
Republic of France, Engineer to be as follows:-
This Invention relates to piston rod stuffing box and other like packing composed
of a combination of metals mixed together without fusion as described in the Specifi-
cation to Letters Patent granted to me and dated 21st February 1887 No. 2696 each
metal being consequently enabled to retain its maximum capacity for resisting the
temperature which it is capable of resisting in a separate or natural condition.
A good combination for ordinary purposes is the white metal composed of twenty
parts of tin applied on eighty parts of lead without fusion but any other suitable
metals may be employed. The lead is first rolled out in thin sheets and is then coated
on both sides with a layer of tin in the aforesaid proportions. A number of sheets
thus obtained are piled one on the top of the other being separated by a greasy or
fatty fabric or material in the proportion of say threo sheets of metal to one of the
greasy material.
This combination forms a semi-metallic mass which is pulped or reduced by the
nction of a cutter or cutters carried by a rapidly rotating disc or other suitable cutting
apparatus the materials being carried on a travelling table or other support.
The reduced material is mixed with granulated cork, tale, pulverised lubricants or
the like each being in the proportion of from about two to three per cent. of the
weight of the metal. This mixture forms a greasy semi metallic pulp which is stuffed
into a tube or sheath of woven fabric of any suitable size.
The sausage liko packing thus obtained is compressed into triangular, quadrangular
or other shape in transverse sectional and longitudinal or other stitches are introduced
to enable it to retain its shape and prevent the stuffing or contents from falling out
when the packing is cut or divided.
Two pieces of triangular form in transverse section may be put together in ono
sheath so as to form one piece of rectangular form in section.
In cases where the packing is exposed to temperatures of about two hundred degrees
Centigrade and upwards, zinc, antimony and brass or the like may be employed
being manufactured into thin plates or sheets and cut up or pulped as hereinbefore
described, the plates or sheets being arranged in the cutting apparatus alternately
with layers of woven or fibrous material and reduced to shavings by apparatus on the
principle of a turning lathe, planing or other cutting machine capable of reducing
the mass to fine helically or spirally coiled wires or shavings which mix together
and form a fibrous metallic stuffing which is mixed with other ingredients and put
into sausage like sheaths or casings as hereinbefore explained.
The part of the gland or follower in contact with the packing is preferably recessed
with inclined sides forming an angle of about 30 degrees with the side of the piston
rod and flat part or narrow annular shoulder is provided at the part nearest to the
rod. Pieces of packing prepared as hereinbefore described of sufficient length to
form rings surrounding the rod are laid in the stuffing box one over the other the
gland or follower being screwed down on each ring separately so as to cause the rings
to assume a conical shape and exert a wedging action upon one another between the
rod and the sides of the box. Security against leakage is thus ensured and as the
rings wear away it is simply necessary to place fresh rings on the top of the others in
anday to rate for the loss

page_text: When it is inconvenient to alter the shape of the gland or follower to the form
hereinbefore described a ring of suitable shape may be placed under the gland in
order to obtain the required wedging action and in certain cases a conical ring may
be placed in the bottom of the stuffing box being made in two pieces grooved for the
reception of a cord by which they can be secured in position on the piston rod.
D
30.1 "
D
1
1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in or Connected with Packing for Piston Rod Stuffing
Boxes and other like Purposes.
1, JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this Invention (which has been
communicated to me from abroad by Joseph Mario Guibal of 48 rue de Bondy, Paris
in the Republic of France Engineer) and in what manner the same is to bo
performed to be particularly described and ascertained in and by the following
statement:
This Invention relates to piston rod stuffing box and other like packing composed
of different metals combined together without fusion as described in the Specification
to Letters Patent granted to me and dated 21st February 1857 No. 2696 each metal
being consequently enabled to retain approximately its maximum capacity for
resisting the influence of high temperature which it is capable of resisting in a separato
or natural condition.
A good combination for ordinary purposes is the white metal combination composed
of twenty parts of tin applied on eighty parts of lead without fusion but any other
suitable metals may be employed. The lead is first rolled out in thin sheets and is
then coated on both sides with a layer of tin in the aforesaid proportions. A number
of sheets thus obtained are piled one on the top of the other being separated by a
greasy or fatty woven fabric or fibrous material in the proportion of say three sheets
of metal to one of the greasy material.
This combination forms a semi metallic mass which is made up in the form of a
rope as hereinafter described being previously pulped or reduced by the action of a
cutter or cutters carried by a rapidly rotating disc or other suitable cutting apparatus
the material being carried on a travelling table or other support and fed forwards
gradually so as to present its edge to the action of the cutter. By these means a
pulp mixed with carded fibre is obtained of any suitable degree of fineness.
The reduced material is then mixed with granulated cork, talc, pulverized
lubricants (dry lubrication) or the like each being in the proportion of from about
two to three per cent. of the weight of the metal. This mixture formus a greasy semi
metallic pulp which is stuffed into a tube or sheath of woven fabric of any suitable
size. The rope like packing thus obtained is compressed into triangular quadrangular
or other shape in transverse section and longitudinal or other stitches are introduced
to enable it to retain its shape and prevent the stuffing or contents from falling out
when the case is cut or divided.
Two pieces of this rope packing of triangular form in transverse section may be
put together in one sheath so as to form one piece of rectangular form in section as
illustrated in figure 1 of the accompanying drawings.
In cases where the packing is exposed to temperatures of about two hundred
degrees centigrade and upwards zinc, antimony and brass or any other suitable metal
may be employed being reduced to the form of thin plates or sheets of suitable
thickness which are piled together alternately with a woven or fibrous material or
fabric or in the proportion of two sheets of metal to one of fibrous material. This
combination of plates forms a metallic mass which is subjected to the action of
a tool holder planing machine or lathe or the like so as to reduce the said mass to
thin curly shavings or fine helically coiled wires or threads which being simply mixed

page_text: together form a fibrous metallic stuffing or packing. This fibrous metallic stuffing is
inixed with the same ingredients and put into tubular sheaths or casings as herein-
before explained with reference to the softer metals.
The extremity or part of the gland or follower in contact with the packing is
preferably recessed with inclined sides forming an angle of about 30 degrees with
the side of the piston rod and a flat part or narrow annular shoulder is provided at the
part nearest to the rod.
Figure 2 of the accompanying drawings represents in section a stuffing box lined
with packing according to this invention the gland A boing recessed or in the form
of a hollow cone with a narrow shoulder a bearing on the upper edge of the packing
as indicated in the drawing.
The packing indicated at B is composed of pieces of rope like material prepared as
hereinbefore described of sufficient length to form rings surrounding the rod. These
rings are laid in the stuffing box one over the other the gland or follower A being
screwed down on each ring separately so as to cause the rings to assume a conical
shape and exert a wedging action upon one another between the rod and the sides of
the box. Security against leakage is thus ensured and as the rings wear away it is
simply necessary to place fresh rings on the top of the others in order to compensate
for the loss.
-
When it is inconvenient to alter the shape of the gland or follower to the form
hereinbefore described a ring of suitable shape may be placed under the gland as
indicated at E figure 3 in order to obtain the required wedging action and in certain
cases when it is difficult to prevent leakage a conical ring (, figure 2, may be placed
in the bottom of the stuffing box being made in two pieces grooved at 1) for the
reception of a cord by which they can be held together on the piston rod whilst they
are being placed in position.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to he performed I declare that what I
claim is :-
-
A packing composed of metallic sheets reduced to pulp or metal plates reduced
to shavings forming a metallic stuffing composed of different metals combined together
without fusion so as to impart to the packing a power of resisting the influence of
temperature approximating that of its constituent metals in a solid or undivided state
substantially as hereinbefore described.
2. A packing composed of inetallic sheets or plates combined with fibrous materials
and cut up or pulped or reduced the product of the cutting pulping or reducing
process being mixed with cork, talc or other like materials if required and made up
in the form of ropes substantially as hereinbefore described.
3. The improved arrangement of the stuffing box herein before described and
illustrated in the accompanying drawing for the metallic packing prepared as hørein-
before explained.
Dated this 27th day of September 1889.
J. H. JOHNSON & Co.,
Agents.