An Improved Pipe-coupling.
Year: 1890

page_text: Date of Application, 20th Dec., 1890
Complete Specification .Left, 21st Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
An Improved Pipe-coupling.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me from abroad by Enoch Lawson, of San Francisco, California, U.S.A.
Inventor,) to be as follows:-
This invention has reference to an improved pipe-coupling which is more
especially applicable for use where great force is employed such as in hydraulics.
By this invention two ends of the pipes to be coupled are screw threaded to fit the
internal thread of a union, or sleeve, which is tapered upon its exterior. Over this
union or sleeve is placed another sleeve interiorly tapered to fit over the inner
sleeve. This outer sleeve projects at its ends over the inner sleeve in such
manner as to form an annular recess around the pipes at each end of the inner
sleeve. Within each of these recesses is placed a suitable packing washer. Two
collars, each having a boss of the saine diameter as the inside of the outer sleeve,
are bored to fit over the pipes in such manner that the boss comes into contact
with the packing contained in the recesses. These collars are of larger diameter
than the outer sleeve, and have holes drilled through them, through which bolts
may be passed parallel to the pipes for the purpose of drawing them tightly
together, and their bosses against the packing.
Dated this 20th day of December 1890.
J. P. BAYLY,
Applicant.
COMPLETE SPECIFICATION.
An Improved Pipe-coupling.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication. to me from abroad by Enoch Lawson, of San Francisco, California,
U.S.A. Inventor,) and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
My invention relates to metal pipe-couplings in which a joint is effected by
means of a divided screw-connecting union, an outer tapering tightening sleeve or
cylinder controlled and adjusted by means of two flanges connected by bolts, as
will be fully explained in the accompanying drawings.
Figure 1 is a sectional view showing the general arrangement of the whole;
Fig. 2, a section cut through the line;
Fig. 3, an elevation of the divided screw-connecting union;
Fig. 4, an elevation of the outer connecting and tightening sleeve.
A represents the conducting-pipe; B, the divided screw-connecting sleeve ;
C, the outer connecting and tightening sleeve; D, the flanges for locking the
whole together; E, the connecting-bolts; F, the rubber or other suitable packing-
ring. represents the opening slot for the divided connecting-sleeve.
The following is the construction of my improved coupling: I construct the
divided connecting-union B of soft metal, with the opening or slot 6 about one-eighth
of an inch in breadth and extending to within about one-eighth of an inch of the
ends of the coupling-union. I cast or form it over a screw or otherwise form it to
exactly fit the screw. I then break the union apart by driving a wedge or chisel
through the slot b, so that when placed together it will form a perfectly-tight joint

page_text: at each end of the union and prevent the soft packing from being forced in when
the locking-flanges D are being tightened upon the same.
I form the outer con-
'necting and tightening sleeve C of steel or malleable iron and taper it upon its
interior to correspond to the taper of the outer surface of the divided connecting-
coupling B, which is bevelled or tapered for the purpose of tightening. I generally
form the packing-rings F of rubber and' place them in as shown in Fig. 1. 1 form
a recess in the tightening-sleeve Catone end to receive the bearing of the flange D,
as shown; against the packing-ring.
The following is the operation of my improved coupling: I bring the ends of the
pipe A as near together as will leave space to barely allow the outer connecting
and tightening-sleeve C to be passed through and put upon the pipe A. I then
place the divided screw-connecting sleeve B upon the screw of each of the ends of
the pipe A, adjusting it exactly to the threads of the pipe. I tlien shove the
sleeve C upon the sleeve B upon the smaller end and force it on until it is nearly
to its place. I then bring up the flanges D and tighten them by means of the
bolts E, causing the outer sleeve C to be driven on and the inner sleeve B
tightened, and the packing F thoroughly pressed in and perfectly sealing tlie whole,
'so that no gas can escape.
. Having now particularly described and ascertained the nature of this my
said invention, and in what manner the same is to be performed, I declare
that what I claim is :
1. In a pipe-coupling, substantially as described, the combination of the interior
sleeve or union tapered upon its exterior and interiorly threaded to engage the
threads of the pipe-sectious, the interiorly tapered outer sleeve adapted to be placed
upon the sleeve-B,-the-packing rings placed upon the pipes within the outer sleeve
and against the-ends-of-the-inner-sleeve, the flanges or discs also placed upon the
sections of pipe and bearing against the packing rings and ends of the inner sleeve,
and bolts connecting said flanges and adapted to draw them together, substantially
as described, for the purposes set forth.
2. In a pipe-coupling, the combination, with two sections of pipe, of the sleeve
_or_union interiorly-threaded to engage the threaded ends thereof and tapered upon
its exterior, the interiorly-tapered outer sleeve adapted to be placed upon the inner
union, the packing, rings interposed within the outer-sleeve-and bearing-against-the
ends of the interior sleeve, and means for exerting a pressure upon the ends of-the
sleeve; for the purpose set forth, substantially as described.
.
Dotadi, 00th din of Cantanshan 1001