Improvements in Universal Joint-coupling for Pipes.
Year: 1890

page_text: Date of Application, 7th Oct., 1850-Accepted, 15th Nov., 1890
COMPLETE SPECIFICATION.
Improvements in Universal Joint-coupling for Pipes.
I, JOSEPH WALKER, of Clarks Green, in the County of Lackawanna, State of
Pennsylvania, United States of America, Gentleman, do hereby declare the nature
of my invention for IMPROVEMENTS IN UNIVERSAL JOINT COUPLING FOR PIPES, and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention has for its object to provide an improved universal joint coupling for
pipes employed to conduct steam, gas, water, air, etc., and it consists of a coupling
composed of a novel combination of parts, arranged and adapted substantially as
will now proceed to describe and point out particularly in the clauses of claim at the
end of this Specification.
In the accompanying drawings:
Figure 1 represents a longitudinal sectional view of a coupling constructed in
accordance with my invention.
Figure 2 is a detail view of one of the rings which enters into the structure of
the coupling.
Similar letters of reference in the several figures indicate the same parts.
The letter A indicates a pipe having formed upon one of its ends a spherical
enlargement B; C is a cap having a bearing surface shaped to fit the spherical
enlargement B of the pipo and be united to another cap E by a screw-threaded
connection G-2.
.
D is a ring having bearing surfaces D', D', also adapted to fit the enlargement B.
This ring fits within a recess in the cap E and is held in proper position by said
cap, a packing ring H being interposed between it and the cap as shown.
In the space bounded by the enlargement B, caps C and E and ring D, is inserted
packing material F and also a ring G which has a concave formed face G₁ and is
adapted to be adjusted by means of set screws I so as to crowd the packing closer and
tighter when occasion requires.
In assembling the parts of the coupling it is found convenient to first slip the
cap Conto the pipe A till it becomes seated against the enlargement B, then place
the ring D in position on the enlargement B (temporarily holding said ring there
by means of a screw rod passed through the pipe and serowed into the cross bar D-2
of said ring, seen in Figure 2) then place in position the packing material F, then
insert the compression ring G, the packing ring H and finally screwing into place
the cap E as will be readily understood.
As the packing P becomes loose or worn it can be tightened by means of the
screw I and a tight joint preserved.
The smaller portion of the cap E is screw-threaded as shown at E' for connection
with a pipe to which the coupling is to be attached.
A coupling constructed in accordance with my invention permits of a universal
movement of the connected pipes and at the same time préserves tight joints all
around.
It may be employed for connecting steam, gas, water, air or other pipes and will
he found particularly useful in joining pipes that are used for conveying steam
from locomotive boilers through railway cars for heating purposes, for joining pipes
used for conveying gas through such cars, for connecting border lights in theatres
and generally wherever a universal joint connection between pipes is needed.
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
4
he nine having a cami onberical

page_text: enlargement B at its end, of the cap Û and ring D, fitted to the contour of said
enlargement and the cap E for holding said cap C and ring D in position; substan-
tially as described.
2. In a pipe coupling, the combination with the pipo having the semi-spherical
enlargement or head, of the cap C seated against the enlargement B, the ring D
shaped to conform to said enlargement, the packing F and the screw cap E enclosing
ring D and united to cap C; substantially as described.
3. In a pipe coupling, the combination with the pipe having the semi-spherical
enlargement or head, of the cap C seated against the enlargement B, ring D shaped
to conform to said enlargement, cap E enclosing ring D and united to cap C,
packing F, ring G and means for adjusting it; substantially as described.
Dated this Seventh day of October 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.