Swivel Joint Page: 2 of 3
This patent is part of the collection entitled: Texas Patents and was provided to The Portal to Texas History by the UNT Libraries Government Documents Department.
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UNITED STATES PATENT OFFICE.
DANIEL O'BRIEN, OF PALESTINE, TEXAS.
SWIVEL-JOINT.Specification of Letters Patent.
Patented May 13, 1919.
Application filed June 4, 1918. Serial No. 238,200.
To all whom it may concern:
Be it known that I, DANIEL O'BRIEN, a
citizen of the United States, and a resident
of Palestine, in the county of Anderson and
5 State of Texas, have invented a new and Im-
proved Swivel-Joint, of which the following
is a description.
My invention relates to a joint for con-
necting a pipe or similar element to a cou-
10 pling sleeve, and more particularly relates
to a means to form a swivel joint so that
the pipe may be turned about its axis.
My invention has for its general object to
provide a swivel joint improved in various
15 particulars, whereby a fluid-tight connection,
is insured and the packing of the joint may
be renewed when desired by the removal of
a gland or packing nut without disturbing
the remainder of the joint elenients.
20 The means whereby the objects of the in-
vention are obtained will clearly appear
from the specific description following.
Reference is to be had to the accompany-
ing drawings forming a part of this specifi-'
25 cation, it being understood that the drawings
are merely illustrative of one example of the
invention.
Figure 1 is a partly sectional side eleva-
tion of coupled pipe sections showing a prac-
30 tical embodiment of my invention,, the in-
vention being applied at both ends of a cou-
pling sleeve;
Fig. 2 is a similar view showing my in-
vention embodied in a coupling at one end
35 of the sleeve.
The different illustrated examples of my
invention disclose an expansion spring bear-
ing endwise against the swiveled element,
exerting a force axially thereon to maintain
40 it in .contact with the stuffing box elements
or other packing means so that the swiveled
element may turn about its axis while main-
taining its contact with the packing or stuff-
ing box members.
45 My invention as- illustrated in Fig. 1 is
employed in connection with a coupling
sleeve 10 having internal threads 11 at both
ends and which threads in practice it will be
understood may extend any desired length.
50 The numeral 12 indicates pipe sections at the
respective ends of the sleeve 10 and to be
joined by the latter. The outer ends of the
pipe sections in Fig. 1 are formed with
threads 13 for connecting other pipe sections
55 (not shown) or other elements.
The pipe- section 12 or like swiveled ele-"dent extends through a stuffing box made up
of elements hereinafter described and is
provided with a collar 14 formed upon or
suitably secured thereto. An annular fol- 0
lower 15 is formed with external threads 16
engaging the threads 11 on the sleeve 10 and
said follower has at the inner end thereof an
annular flange 17 projecting radially inward
within which flange the pipe section 12 has a 65
sliding fit. Between the flanged inner end
of the follower 15 and the collar 14, a pack-
ing in the form of a ring 18 may be em-
ployed if desired, against which the follower
bears at its inner end, as in Fig. 1. Said 70
follower at its outer end has a hexagon or
other polygonal flange 19 to take a wrench.
Within the sleeve 10 between the respective
pipe sections 12 or other elements to be cou-
pled, an expansion spring 20 is accommo- 75
dated, so that the pressure of the spring will
be exerted on the collar 14 of a pipe section
12 or on both pipe sections in the arrange-
ment shown in Fig. 1. The pressure of the
spring 20 against the collar 14 tends to. press 80
the pipe section 12 outwardly and the collar
14 in the direction of the flange 17 of the
follower 15, thereby compressing the pack-
ing 18 or in the absence of the packing, serv-
ing to form a direct contact between the op- 85
posed faces of the said collar 14 and flange17.
In connection with the follower 15 a gland
or packing nut 21 is employed having a slid-
ing fit on the pipe 12 and formed with ex-
ternal threads 22 to engage the internal 90
threads 23 formed on the follower 15. The
outer end of the gland 21 has a hexagon or
equivalent polygonal flange 24 to take a
wrench. Within the follower 15, between
the flange 17 thereof and the end of the 95
gland 21, a suitable packing 25 is employed.
The turning up of the gland 21 serves to
compress the packing 25 and by unscrewing
the said gland from the follower, said pack-
ing may- be renewed at any time leaving a 100
comparatively tight joint between the Fol-
lower and the pipe section 12 with its collar
14, as well as between said follower and
the sleeve 10.
The devices in Fig. 1 are the same at both 105
ends of the coupling sleeve. In Fig. 2, how-
ever, a single swivel joint is shown. The
parts at the left of the sleeve correspond
in all respects with the same elements in
Fig. 1 and they accordingly have been given 110
the same reference numbers. The exception,
however, is that the packing ring 18 is1,303,714.
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Reference the current page of this Patent.
O'Brien, Daniel. Swivel Joint, patent, Date Unknown; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth1257214/m1/2/?q=%22%22~1: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.