Year: 1898

page_text: Date of Application, 15th Feb., 1898
Complete Specification Left, 25th Oct., 1838-Accepted, 31st Dec., 1898
We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE JAKE-
MAN, both of Greenwich Road, Greenwich, in the County of London, Engineers,
do hereby declare the nature of this invention to be as follows;-
This invention has reference to an improved construction hereinafter described
with reference to the accompanying illustrative drawings, of pipe coupling of
the kind in which both halves of the coupling are made symmetrical with a
straight longitudinal passage through each and are adapted to be united by
being relatively partially rotated about the longitudinal axis of the coupling,
the arrangement being such that lengths of hose or other pipes provided at
both their ends with such half couplings can be connected to each other by
either end indiscriminately, and that there shall then be a straight unobstructed
delivery passage therethrough.
Referring to the drawings, Fig. 1 shows a side elevation of a complete coupling
according to this invention;.
in
Fig. 2 shows an end elevation of the complete coupling.
Fig. 3 shows a central longitudinal section of one half of the coupling; and
Fig. 4 shows an end elevation of one half coupling.
a is a short metal pipe formed externally with annular grooves b, or other-
wise appropriately shaped, as well understood, in order that hose pipe may be
securely attached to it by suitable binding. The pipe a has at one end a flange c
annular pack-
which is an annular dovetail groove fitted with an
ing ring d of india rubber or other sufficiently resilient material which
projects a short distance beyond the annular face of the flange at the end of the
pipe a. Around the pipe a is a ring e of an internal diameter just slightly ex-
ceeding the external diameter of the pipe a, which ring is free to be rotated
about the pipe a, but is prevented by the flange c from slipping off that end of
the pipe a. Integral with or firmly attached to the ring e there are two exten-
sions of peculiar shape each comprising a partial annulus f of an internal diameter.
c so as to clear it when being
just exceeding the external diameter of the flange
partly rotated with the ring e, and another partial annulus g extending through
say 90 degrees more or less leaving two gaps h each extending also through
about 90 degrees and each of the partial annulii g is formed with an engaging
face whose general direction is slightly inclined to a plane at right angles
to the axis of the coupling; and the face k is suitably roughened of formed
with radial teeth ridges or grooves in suchwise as to readily engage with a
round corresponding face of the second half coupling and to prevent the parts
of the coupling from becoming accidentally disengaged but which are not so
pronounced as to prevent the parts of the coupling from being intentionally
disengaged in opposition to the spring action of the packing, which tends to
keep the parts engaged, as well as to insure a fluid-tight joint.
Figs. 5, 6 and 7 illustrate examples of ways in which the faces k
may
be

page_text: formed, but these may obviously be varied. I are lugs or projections (whose
form may be variously modified) whereby the rotary part of the half coupling
can be moved in a rotary sense as aforesaid. The second short pipe a¹ is similar
to the pipe a already described and is provided with a movable device in all
respects resembling that already described except that it is, as respects its 5
inclined faces reversely arranged. The parts b—c¹—d¹—e¹—f¹—g¹²——h²-k²—
(some of which cannot be seen in Fig. 1) of this second half coupling corre-
spond respectively to the parts b, c, d, e, f, g, h, k and of the already described
half coupling.
The arrangement is such that upon bringing the two half couplings together, 1
the parts of the one pass through the gaps h¹ between the parts g₁ of the
other, and upon then partially rotating in opposite directions the two half
couplings or one of theun relatively to the other the respective toothed
roughened or otherwise formed faces
kl are caused to engage
k
or interlock with each other and firmly connect the half couplings together.
Partial rotation in the reverse direction for disconnection may, if sufficient
force be applied, be effected, as the packing rings will then allow the slight
projections or teeth of the faces k k to pass over one another.
In some cases as where the coupling is used for very high pressures, we form
as shown in section in Fig. 8, in the collar c at the back of the india rubber 2
packing ring d a groove m, into which water can pass from the pipe a, by
means of one or more holes n and by acting upon the packing ring, ensure a
fluid tight joint between the part couplings and prevent leakage."
Dated this 15th day of Fehmiame 1898
We, JAMES COMPTON MERRYWEATHER and CHRISTOPHER JOHN WALLACE Jake-
MAN, both of Greenwich Road, Greenwich, in the County of London, Engineers,
do hereby declare the nature of this invention, and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement:--
3
This invention has reference to an improved construction hereinafter described
with reference to drawings of a pipe coupling of the kind in which both halves
of the coupling are made symmetrical with a straight longitudinal passage
through each and are adapted to be united by being relatively partially rotated
about the longitudinal axis of the coupling, the arrangement being such that 4
lengths of hose or other pipes provided at both their ends with such half coup-
lings can be connected to each other by either end indiscriminately, and that
there shall then be a straight unobstructed delivery passage therethrough.
Figs. 1 to 8 inclusive hereinafter referred to are drawings left with our Pro-
visional Specification, and Figs. 9 to 12 are drawings which accompany the 4
present specification.
Fig. shows a side elevation of a complete coupling according to this
invention;

page_text: Fig. 2 shows an end elevation of the complete coupling;
Fig. 3 shows a central longitudinal section of one half of the coupling ;
Fig. 4 shows an end elevation of the one half coupling.
Figs. 5, 6, 7 and 8 illustrate modifications in detail hereinafter more par-
ticularly referred to.
Figs. 9, 10, 11 and 12 are views corresponding respectively to Figs. 1, 2, 3
and 4 but showing a slightly modified construction of the improved coupling.
a is a short metal pipe formed externally with annular grooves b, or other-
wise appropriately shaped, as well understood, in order that hose pipe may be
securely attached to it by suitable binding. The pipe a has at one end a flange c
in which is an annular dovetail groove fitted with an annular pack-
ing ring d of india rubber or other sufficiently resilient material which
projects a short distance beyond the annular face of the flange at the end of the
pipe a.
In Figs. 1 and 8 the inner wall of the annular dovetail groove is shown
integral with the flange, but in Fig. 11 it is shown made as a part of a separate
ring made with a male thread or threads adapted to screw into a correspondingly
formed part of the metal pipe a whereby the introduction and securing of the
annular packing ring d are facilitated.
Around the pipe a is a ring e of an internal diameter just slightly ex-
ceeding the external diameter of the pipe a, which ring is free to be rotated
about the pipe a, but is prevented by the flange c from slipping off that end of
the pipe a. Integral with or firmly attached to the ring e there are two exten-
sions of peculiar shape each comprising a partial annulus f of an internal diameter
just exceeding the external diameter of the flange c so as to clear it when being
partly rotated with the ring e, and another partial annulus g extending through
say 90 degrees more or less leaving two gaps h each extending also through
about 90 degrees and each of the partial annulii g is formed with an engaging
face k whose general direction is slightly inclined to a plane at right angles
to the axis of the coupling; and the face k is suitably roughened or formed
with radial teeth ridges or grooves in suchwise as to readily engage with a
round corresponding face of the second half coupling and to prevent the parts
of the coupling from becoming accidentally disengaged but which are not so
pronounced as to prevent the parts of the coupling from being intentionally
disengaged in opposition to the spring action of the packing, which tends to
keep the parts engaged, as well as to ensure a fluid-tight joint
Figs. 5, 6 and 7 illustrate examples of ways in which the faces k may be
formed, but these may obviously be varied. I are lugs or projections (whose
form may be variously modified) whereby the rotary part of the half coupling
can be moved in a rotary sense as aforesaid. The second short pipe a' is similar
to the pipe a already described and is provided with a movable device in all
respects resembling that already 'described except that it is, as respects its
inclined faces reversely arranged. The parts 6 el d' el fl g¹ h¹ k¹ ľ
some of which cannot be seen in Fig. 1 of this second half coupling corre-
spond respectively to the parts b, c, d, e, f, g, h, k and 7 of the already described
half coupling.
k
The arrangement is such that upon bringing the two half couplings together,
the parts of the one pass through the gaps h¹ between the parts g¹ of the
other, and upon then partially rotating in opposite directions the two half
couplings or one of them relatively to the other the respective toothed
roughened or otherwise formed faces
kl are caused to engage
cr interlock with each other and firmly connect the half couplings together.
Partial rotation in the reverse direction, for disconnection, may, if sufficient
force be applied, be effected, as the packing rings will then allow the slight
projections or teeth of the faces k k to pass over one another.
In some cases as where the coupling is used for very high pressures, we form,
as shown in section in Fig. 8, in the collar c, at the back of the india rubber

page_text: packing ring d, a groove m, into which water can pass from, the pipe a, hv
means. of one or more holes n, and by acting upon the packing ring, ensure
fluid-tight joint between the part couplings and prevent leakage.
Having now particularly described and ascertained the nature of the said.
invention and in what manner the same is to be performed, we know it has
been proposed to construct pipe coupling, inter alia, in the several ways follow-
ing that is to say:-
(1) comprising flanged pipes with packing rings and collars with bear-
ing hooks cr claws (with or without stops) the arrangement being such that on
pressing together the rings of two half couplings and then turning the collars
in opposite directions the hooks or claws of one should interlock with those
of the other; (2) with inclined flanges or ribs and lugs either, on the coupling
bodies or on rings fitting loosely on the said bodies the lugs of one adapted to
engage with the flanges or ribs of the other and packing rings being provided
with the view of making a water-tight joint (3) with clutches consisting of
tongues and recesses of pockets, the clutches of one half being adapted to be
engaged with those of the other half by a part turn of one or both halves of
the coupling; and we desire to have it distinctly understood that we do not
claim any of those known constructions.
In our improved coupling the joint is mechanically tightened by means of
lugs or thumb-pieces, and the tightness of the joint is not dependent upon the
water pressure acting against the packing rings. And we hereby declare that
what we claim is:
The improved construction shown in and hereinbefore described with refer-
ence to the drawings of pipe couplings of the kind referred to.
Hated
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For the Applicants,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Chartered Patent Agent.