Improvements in Detachable Pipe Couplings.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Detachable Pipe Couplings.
1 ISAAO BROADWORTH POTTS, of Columbus, in the County of Franklin, State of
Ohio, one of the United States of America, Brass Founder, 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 this invention is to provide a simple and convenient pipe-coupling
for joining the ends of pipe without skilled labor or the use of solder, screw
threads &c., and to this end I proceed as follows, reference heing had to the
accompanying drawing forming a part hereof where-
Fig. 1 is a view in central, longitudinal, sectional elevation of a detachable pipe
coupling constructed according to my invention, and
Figs. 2 and 3 detail views on an enlarged scale of the split ring.
This coupling is composed of a union A having screw threaded extremities a,
nuts B, B, and split rings C, C. D, D, designate the ends of the pipe being
coupled.
The union A is formed exteriorly with lateral projections or ribs a' for the purpose
of holding the union when applying the coupling in position, and its outer ends are
counter-sunk or tapered inwardly as shown at a².
The rings C, C, are, as before stated, split or divided, and as shown in fig. 3, this
split is made partially at an angle longitudinally of the ring as at c and partially
straight as at c', and longitudinally of the interior surface of the ring is a series
of grooves, which grooves are made deeper and wider at one end than at the
other as shown in fig. 3. In addition to this the top inner edge of these rings are
inclined or outwardly tapered as at 1 to conform to the incline a² of the ends of the
union A and with an inward taper or counter-sunk portion 2 to receive the
packing D'.
The rings being split diagonally of their length, they may be compressed around
pipe of small diameter and the interior grooves in said ring render it flexible and so
that it will readily conform to any irregularities in the pipes being united, and as
said grooves are made wider and deeper at one end than at the other, this end of
the ring will be compressed the most, so that a tight joint is the result.
To apply the coupling, the union A is held by the ribs a. The nuts B, B, and
next the rings, C, are slipped one upon each of the ends of the pipe to be
coupled, with a ring of soft packing against the countersunk ends 2 of said rings.
The ends of the pipe are now inserted into the ends of the union and the nuts B, B,
screwed upon said union, whereupon the nuts are brought against the outer ends of
the rings C, C, and said rings forced upon the ends of the union. The end of the
union being tapered inward and a similar outward taper being given to the rings,
they are, as the said rings press against the union, laterally compressed upon the
pipe being coupled-the split and interior grooves thereof rendering such movement
of the rings possible.
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 a pipe-coupling of the nature described, the ring, split or divided diagonally
of its length and with inclined shoulder upon its inner top edge and interior grooves
made wider and deeper at one end than at the other across the interior, combined
with the union and nuts, substantially as described for the purposes specified.
2-The combination in a pipe-coupling with the union A having ribs a' and
screw threaded counter-sunk ends a, a, and coupling-nuts B, B, of the diagonally

page_text: split rings C, O, having tapered ends 1 corresponding to the taper of the ends of
the union and interior incline or counter-sunk portion 2 and grooves made wider
and deeper at one end than at the other extending longitudinally across the
interior of the ring, and packing D, all constructed and arranged as and for the
purposes described.
Dated this 25th day of March 180a
ISAAC BROADWORTH POTTS.
Herbert & Co.,
18, Buckingham Street, Strand, W.C., London, Agents to Applicant.