Improvements in Swing and Extension Pipe Joints.
Year: 1891

page_text: Date of Application, 13th Oct., 1891-Accepted, 21st Nov., 1891
COMPLETE SPECIFICATION.
Improvements in Swing and Extension Pipe Joints.
We, PATRICK BROWN, Engineer, residing at Chestnut Hill, in the City of
Philadelphia, in the State of Pennsylvania, United States of America, and JOHN
PETER RYAN, Builder, residing at the Hotel Beresford, Cor. 81st Street and Eighth
Avenue, in the City of New York, in the State of New York, United States of
America, 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 a pipe joint, for uniting either two
pieces of pipe, without elbow terminations, or two pieces of pipe, either or both of
which, has an elbow termination, and to permit of either or both of said pipes
freely contracting or expanding in the direction of their length, and of axially
rotating without strain upon the joint, and yet preserve a tight joint at all times, as
well as permitting of a uniformity of bore being used throughout the series of
connected pipes.
This invention which is applicable to steam, water, oil, and other pipes, consists
in a novel construction of pipe joint, substantially as hereinafter described, and
more particularly pointed out in the claims, whereby the above named results are
very perfectly attained, great convenience is afforded in adjusting the pipes, and
breaking of them by expansion and contraction is prevented.
Reference is to be had to the accompanying drawings, in which similar letters of
reference indicate corresponding parts in all the views.
Fig. 1 represents a longitudinal view of a pipe connection, as applied to a steam
boiler, having an elbow at the end of one pipe, and with my improved joint
applied.
Fig. 2 is a longitudinal view of two pieces of pipe with elbow at the end of each,
also with the joint applied.
Fig. 3 is an exterior longitudinal view of one piece of pipe, in part, with
another length of pipe in part, in section, as also the joint piece or coupling uniting
said pipes.
Fig. 4 is a longitudinal section of all the parts or pieces as shown in Fig. 3.
Fig. 5 is a transverse section upon the line 5-5 in Fig. 3. looking in the direction
of the arrow 2.
Fig. 6 is a rear view of a washer used in the joint and
Fig. 7 is a transverse section of the same upon the line 7-7 in Fig. 6.
In Fig. 1, A, indicates a stationary short pipe or nozzle, screwed into the end B
of a steam boiler, and A' a pipe having an elbow b, at its outer end, and adapted to
connect its inner end with the nozzle or pipe A, by a joint, or coupling connection C,
embodying my invention, and providing for the longitudinal expansion or contraction
of the pipe A, and for turning it axially, to change the position of the elbow, in
any desired direction, but which is here simply shown by full and dotted lines in
reverse positions. In Fig. 2 of the drawing the pipes A, and A', are both supposed to
be capable of automatic longitudinal adjustment, or contraction and expansion, by
means of the joint or coupling connection C, at their adjacent ends, and of being
axially turned as required, to change the position of the elbows b, at the opposite
ends. In Figures 3 and 4 a like construction of the joint is shown for connecting
two straight pipes A, and A'.
In all of these figures the pipes A, A¹, may be of any desired length, or any number
of them, may be similarly joined together, and they may run in any desired
direction, and each connected series of pipe be of the same interior diameter
ahora

page_text: The joint C, connecting the pipes A, A', is made as follows: The pipe A¹ is
constructed with an externally projecting circular flange c, at its connecting end,
which flange is free, as the pipe expands or contracts, to move in or out of a circular,
enlarged box part or chamber d, at the connecting end of the adjacent pipe A¹,
and also to axially rotate therein, for the purpose hereinbefore named, or whenever
required. Or the two pipes A, A', will by this fitting of them one within the other,
be free to longitudinally expand or contract, and either or both of them may be
axially rotated, to swing or turn the elbow or elbows b, at the outer end or ends
of them, if so provided, in any required direction, and where there are elbows on
both pipes, to turn the same in reverse directions, if desired, as shown in Fig. 2, 1
or it might be in the same direction.
To couple the pipes A, A, together, at their adjacent ends, and to form a joint
which will provide for the double adjustment of the pipes, as just specified, and yet
keep tight, as against leakage, the chambered portion d, of the pipe A, has an
external screw thread e, cut upon it, and a beveled or concave seat, made in its 1
face end, and the other pipe A', has loosely slipped over it, back of the flange c,
a dished washer g, adapted to fit the seat, and in rear of this again, the pipe A',
has applied to or wound around it, a packing h, of fibrous material, preferably
asbestos in tape form. This packing h, and the packing ring or washer g, are both
enclosed by, or contained loosely within a nut, having an internal screw thread i, on
the chambered end of the pipe A, and having an inner projecting back flange k, that
closely hugs the body of the pipe A'.
By this construction and combination of parts on screwing up the nut i, so as to
bring the washer 9. in front of the packing h, up against its seat, and arranging
the pipes A, A, so that the flange c, of the pipe A stops short of the back of the 2
chamber d, a tight joint is secured for the meeting end portions of the pipes, both
peripherally and endwise, with freedom for the pipes to expand or contract, or to be
turned axially as desired.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed we declare that what we a
claim is―
In a pipe joint, the engaging end of the one pipe cons ructed with an enlarged
chamber, having a screw thread on its peripheral exterio, and a concave seat on
its face end, in combination with the engaging end of the adjacent pipe, constructed
with an outer flange, adapted to freely fit within said climber, a washer encircling 3
the flanged pipe back of the flange, and adapted to fit the toncave seat in the face
end of the chambered portion of the adjacent pipe, a fibus packing, back of the
said washer, and a nut enclosing the washer, and fibras packing, and having an
internal screw thread, adapted to engage with the exterior screw thread on the
chambered portion of the adjacent pipe, also having an inner back flange, 4
constructed to hug the flanged pipe in the rear of .he packing, substantially as
described.
Dated this 13th day of October 1891.
HERBERT J. ALLISON,
Agent for the Applicants.