Improvements in Packing for Piston and like Reciprocating Rods.
Year: 1892

page_text: Date of Application, 11th May, 1892
Complete Specification Left, 11th Feb., 1893-Accepted, 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Packing for Piston and like Reciprocating Rods.
I ARTHUR GEORGE BROWN of Globe Iron Works, Bolton, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
The object is to provide packing for piston rods, valve rods, pump plungers,
trunk pistons and like reciprocating parts which shall prevent the passage of steam
or fluid under pressure and yet allow of unrestricted motion both of rod and
packing.
Packing under my invention consists essentially in the combination of a ring or
piece which fits accurately to, and surrounds, say about one half of the moving
part and which has projecting ends with a sliding piece which fits accurately to the
remaining portion of the rod or moving part and within the above mentioned
projecting ends. The two elements being coupled by means of a yoke and spring
or their equivalents.
Further, two or more packing rings are combined and coupled so as to break
joint.
Springs or other suitable means are used to keep the packing in position, and
where necessary a ball and socket joint is combined with my improved packing to
allow of angular motion.
An additional improvement consists in constructing the ball and socket joint
so that it may be placed in position without uncoupling the piston rod or moving
part.
Amongst the advantages of my packing are that it may be used in any ordinary
stuffing box, and that the said packing is free to rotate round the rod or moving
part so that equal wear of all parts is assured.
Per pro. J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Packing for Piston and like Reciprocating Rods.
I ARTHUR GEORGE BROWN of Globe Iron Works, Bolton, in the County of
Lancaster, 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 is to provide packing for piston rods, valve rods, pump plungers,
trunk pistons, and like reciprocating parts, which shall prevent the passage of
steam or fluid under pressure and yet allow of unrestricted motion, both of rod and
packing.
Packing under my invention consists essentially in the combination of a ring or
piece which fits accurately to, and surrounds, say about one half of the moving part
and which has projecting ends with a sliding piece which fits accurately to the
remaining portion of the rod or moving part, and within the above mentioned
projecting ends. The two elements being coupled by means of a yoke and spring
or their equivalents.
Further two or more packing rings are combined and coupled so as to break
joint.
Springs or other suitable means are used to keep the packing in position and
Pains Rdl

page_text: where necessary a ball and socket joint is combined with my improved packing to
allow of angular motion.
An additional improvement consists in constructing the ball and socket joint so
that it may be placed in position without uncoupling the piston rod or moving part.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a transverse section, and Fig. 2 a longitudinal section of a stuffing box
provided with packing in accordance with my invention. a is the stuffing box,
.b the gland, c the piston or other reciprocating rod, is a metallic piece which
fits accurately to and surrounds about one half of the rod c, e are projecting
ends on the piece d, f is a sliding piece which fits within the projecting ends e
and close against the remaining portion of the rod. g is a yoke, the ends of
which couple with lugs on the piece d and is provided with a stem i which
fits into a recess ; in the piece f. k is a spiral spring which fits in the recess j
and around the stem i so ns to abut against the said piece f and yoke g and
press both of the pieces d and f close against the reciprocating rod. In practice
two or more sets of packing are used in each stuffing box one resting on the
other as shown, and the inner set rests with a face fluid tight against the inner
face of the stuffing box, or preferably as shown against a spherical faced jointing
piece which fits fluid-tight against a cupped collar m let fluid tight into the inuer
end of the said stuffing box. The collar and jointing piece are made in halves so
that they may be readily inserted in position. The outer set of packing pieces fits
with a surface fluid tight against the gland 6 which latter is free to move freely in
the stuffing box and is held in position by springs n which abut against the said
gland and against nuts o. The nuts o are carried by bolts secured to the stuffing
box. The pressure of the gland on the packing is adjusted by means of the said
nuts.
Fig. 3 is a transverse section of packing in which the two pieces d, fare held
against the piston rod by spring clips p taking each into both pieces. In all the
views 9 represents an antifriction lining to the packing pieces which may be used
or not as desired.
Fig. 4 is a transverse section of a modification of packing in which the pieces d
and are made alike and slide between end pieces e separate from both pieces d
and e in this case two sets of yokes y and springs are used.
Amongst the advantages of my packing are, that it may be used in any ordinary
stuffing box, and that the said packing is free to rotate round the rod or moving
part so that equal wear of all parts is assured.
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
First. Packing for piston and like reciprocating rods consisting of metallic pieces
fitting one within the other and held against the rod by springs when one face fits
against the inner end of the stuffing box and the other against the gland.
Second. Packing substantially as herein set forth fitting with one face against a
jointing piece at the inner end of the stuffing box substantially as set forth.
Third. The combination of packing pieces under my invention with a gland held
in position against one face thereof by means of springs.
Fourth. The combination of packing pieces under my invention with a ball and
socket joint substantially as herein set forth.
Dated the 10th day of February 1893.
Per pro J. T. KING,
J. Johnson,
Agent.