Improvements in Pipe Joints.
Year: 1895

page_text: Date of Application, 24th Sept., 1895-Accepted, 26th Oct., 1895
Improvements in Pipe Joints.
1, MICHAEL SEXTON, Plumber, of 1112 Third Avenue, New York City, in the
County and State of New York, United States of America, do hereby declare the
nature of my 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 the invention is to provide a new and improved pipe joint which
is comparatively simple and durable in construction, easily applied, and more
especially designed for uniting pipes without threads cut on the ends thereof, and
without solder, calking or flanges.
The invention consists principally of a sleeve, exteriorly threaded collars screwing
in the ends of the sleeve and formed at their inner ends with bevels, and wedge-
shaped rings adapted to be engaged by the bevels of the said collars and be pressed
upon the pipe periphery at or near the pipe ends.
The invention also consists of certain parts and details and combinations of the
same, as will be fully described hereinafter and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar characters of reference indicate corresponding parts
in all the figures.
Figure 1 is a sectional side elevation of the improvement;
Figure 2 is a transverse section of the same, on the line 2-2 of Figure 1;
Figure 3 is a similar view of the same, on the line 3-3 of Figure 1; and
Figure 4 is a perspective view of a sectional wedge shaped ring.
The pipes A and B, to be united are without screw threads on their ends, as
plainly illustrated in Figure 1, and the pipe ends are separated from each other by
abutting on opposite sides of an internal annular compound projection C¹ formed
in the sleeve C, which is provided on its ends with the internal screw threads C
and C. The interior portion of the projection is narrower than the beveled
portion, and the annular wall at the junction of said projections forms guides for
the ends of pipe sections.
In the threads C and C³ screw the exterior threads of the collars D, D¹
respectively, fitting over the pipes A and B, and formed at their inner edges with
bevels adapted to engage the exterior bevels of rings E and E' respectively, fitted
on the ends of the pipes A and B, each ring E or E¹ being made in one or more
parts, as plainly indicated in Figures 3 and 4. The base or inner ends of the
rings E and E' abut on the washers F and F¹ respectively, resting on the outer
faces of the packing rings G and G¹ respectively, seated on the beveled sides of an
annular projection C carrying the projection C¹ previously mentioned, and located
at or near the middle of the sleeve C.
When the pipes A and B are placed in position in the sleeve C, so as to abut on
the annular projection C thereof, and the collars D, D' screwed up in the
threads C and C³ of the said sleeve, the inner beveled ends of the said collars will
press on the rings E and E' respectively, to move the rings inward against the
washers F and F, and at the same time compress, and consequently fasten the
rings upon the peripheral surfaces of the pipes A and B and thereby form a
friction joint. As the washers F, F' are forced against the packing rings G, G¹,

page_text: the several parts form a very tight joint between the annular projections C and C+,
the packing rings G and G and the washers F and F', to prevent any and all
escape of fluid through the joints.
The outer ends of the collars D and D' are preferably made polygonal in cross
section, so as to enable the operator to conveniently apply a suitable wrench or
other tool, to turn the said collars and to screw the same in the sleeve C, to press
on the rings E and E' for the purpose before mentioned.
It will be seen that when the rings E and E' are securely fastened on the pipes A
and B the collars D and D' of the sleeve C are likewise held securely in position,
and the pipes A and B are firmly united with each other, and at the same time a
very good fluid-tight joint is provided inside of the coupling.
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. A pipe joint comprising a sleeve having an integral annular projection against
which the ends of the pipe sections abut, collars screwing in the ends of the sleeve
and formed at their inner ends with bevels, and wedge-shaped rings each consisting
of separated segmental portions adapted to be engaged by the bevels of the said
collars and be pressed upon the pipe ends, substantially as shown and described.
2. A. pipe joint, comprising a sleeve formed with an integral interior annular.
projection against which the ends of the pipe sections abut, packing rings seated
on the said internal projection and surrounding the said pipes, wedge-shaped
rings made in detached segments or sections fitted on the pipes within the said
sleeve, and collars screwing in the threaded ends of the said sleeve and formed
at their inner ends with bevels adapted to engage the said wedge-shaped rings, to
press the latter upon the said packing rings and to fasten the rings on the said
pipes, substantially as shown and described.
3. A pipe joint, comprising a sleeve formed with an interior annular projection
forming a seat for the ends of the pipes to be coupled, packing rings seated on the
said internal projection and surrounding the said pipes, wedge-shaped rings made
in separated sections fitted on the pipes within the said sleeve, collars screwing in
the threaded ends of the said sleeve and formed at their inner ends with bevels
adapted to engage the said wedge-shaped rings, to press the latter upon the said
packing rings and to fasten the rings on the said pipes, and washers between the
said packing rings and wedge-shaped rings, substantially as shown and described.
4. A. pipe joint comprising a shell formed with an interior annular projection
having an inclined face and also a recess in each side, the recessed portions forming
stops and guides for pipes to be coupled and the inclined portions forming seats,
the packing rings seated on said inclined portions and encircling the said pipes,
wedge-shaped rings in segmental sections fitted on the pipes within the said shell
and collars screwing in the threaded ends of the said shell and formed at their
inner ends with bevels adapted to engage the said wedge-shaped rings and to press
the latter forward onto the said packing ring and inward on the sides of the pipes
to be coupled, thereby forming a fluid tight joint at the outer annular projection
and holding the pipe rigidly in place with the friction joint formed by the
wedge-shaped rings being pressed against the sides of pipe, substantially as shown
and described.
5. A pipe joint, comprising a shell formed with an interior annular projection having
an inclined face and also a recess on each side, the recessed portion forming stops and
guides for pipes to be coupled, and the inclined portions forming seats, the packing
rings seated on said beveled pipes and encircling the said pipes, wedge-shaped
rings in detachable segmental sections fitted on the pipes within the said shell, and
collars screwing in the threaded ends of the said shell and formed at their inner
ends with bevels adapted to engage the said wedge-shaped rings and to press the
latter forward onto the said packing ring and inward on the sides of the pipes to

page_text: be coupled, and metal retaining rings or washers between the said packing rings
and wedge-shaped rings, substantially as shown and described.
Dated this 24th day of September 1895.
A. M. & WM. CLARK,
53 Chancery Lane, London, Chartered Patent Agents.