Improvements in Pipe Unions.
Year: 1895

page_text: Date of Application, 15th May, 1895
Complete Specification Left, 15th Feb., 1896-Accepted, 25th Apr.. 1896
1
Improvements in Pipe Unions.
I, ROBERT LOUIS SENTINELLA of No. 2 North Street, Kennington Road, in
the County of Surrey, Brassfounder, do hereby declare the nature of this invention
to be as follows:
My invention relates to improvements in pipe unions, and the particular object of
it is to prevent any operative portion of the union, e.g., the screwed male end, being
damaged after the union has been disconnected.
In carrying my invention into effect; the screwed male end of the union is fitted
with a radial projection or equivalent device adapted to act as a stop in the way
described further on. The male end last mentioned may be a fixed member of the
union as when is the nose of a tap. The nut or cap is fitted with a stud, or its
equivalent, adapted to engage with the stop above mentioned, once in a rotation of
the said nut. Consequently, the latter cannot be turned about its axis more
than once in either direction when the union is in use as such. The lining is
inserted in the nut, by passing its flange in a line at right angles with the axis of
the union through a slot cut in the side of the nut. The pitch of the thread is such
that less than a turn of the nut suffices to make the union joint.
Dated this 15th dow of Mar 1805
PHILLIPS & LEIGH,
Agents for the Applicant. .
Improvements in Pipe Unions.
I, ROBERT LOUIS SENTINELLA, of No. 2 North Street, Kennington Road, in
the County of Surrey, Brassfounder, 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 :-
My invention relates to improvements in pipe or hose unions, and the particular
object of it is to prevent any operative part of the union, e.g., the screwed male end
(ie., the lump end) and the cap or nut, being damaged after the two parts of the
union have been unscrewed from each other, this prevention consisting broadly in,
the said cap or nut not being detachable from the lump end.
According to it, the lump end is provided with a radial projection or equivalent
device adapted to act as a stop in the way described further on. The said end
may be a fixed member of the union, as when it is the nozzle of a cock, and
the present invention is equally applicable whether the end in question is fixed
as on the end of a cock or hydrant; or detachable as in the case of a hose
union. The nut or cap of the union is provided with a stud, or its equivalent,
adapted to engage with the above mentioned stop once in a rotation of the said
nut. Consequently, the latter cannot be turned about its axis more than once in
either direction when the union is in use as such. The pitch of the screw thread
is such that less than a turn of the nut suffices to screw the union up. The lining
is inserted in the nut by passing its flange in a direction at right angles with the
axis of the union, through a slot cut in the side of the nut.

page_text: Referring to the accompanying figures, which illustrate the construction of my
invention as applied to a hose pipe union :-
Figure 1 is a sectional elevation of a hose coupling taken along line 1-1 of
Figure 2.
Figure 2 is a plan corresponding with Figure 1 after the uniou has been
screwed up.
Figure 3 is an elevation of the same hose coupling.
Figure 4 is a plan of the coupling showing the lump end, cap or nut and lining
ready for being either screwed up or separated.
Figure 5 is an inverted plan illustrating the act of detaching the lining from the
lump or that of joining them.
Figure 6 is a side elevation of hose and coupling just before or after junction or
after separation.
a, b are the union ends of the two hose pipes.
c is the lump end to which the pipe a is made fast in the usual way; c' the male
screw thread on the outer end of it; the device for holding the lump end steady
whilst the union is being screwed up, illustrated as consisting of two strong
studs, projecting from opposite sides of the lump end at right angles with its
axis, and c³, the flange, all as heretofore.
d is the opposite or female half of the union, or "lining" as it is sometimes
called, and d, the flange, both of the same construction as heretofore. The
respective hose pipe b is made fast to it in the usual way. The tightening.or
packing device between the inner end of the lining d and the opposite lump
end may be of any suitable or convenient type. The one illustrated consists of
a. nipple ring on the lump end, an annular recess in the opposite lining of the
proper size to receive the said ring e', and a washer c³.
e is the cap or nut, e¹ its female screw thread adapted to engage with the
male screw thread c¹ above mentioned, the device for gripping the said cap or
nut for the purpose of screwing it up, illustrated as consisting of two strong
studs e, e, projecting from it at right angles with its axis and e³, the flange, all as
heretofore.
f is the opening in the side of the cap between the flange e³ and screw thread e¹.
It is through this opening that the lining d is engaged with or disengaged from
the cap or nut e, by passing the flange d' of the lining through it instead of
passing the lining d through the cap or nut e from the screw threaded side of it as
heretofore.
g is a radial extension of the flange c³ and h, a stop projecting towards the lump
end c from the cap or nut at a shorter radial distance from the axis of the union
than the extension g. This position of the stop is an essential feature of the
invention for its function is to abut upon the extension
for the purpose of
preventing the cap'or nut e being turned more than once about its axis in either
unscrewing the union or screwing it up. Further, the stop in question is of such a
type that it can be made fast to the cap or nut e after the union has been screwed
up. The presence of the stop then prevents the cap or nut e and the lump end c
being unscrewed more than by one turn. But the axial distance equivalent to this
one turn must be enough to provide a.clearance for the lining flange d' in respect
of being taken out of the cap or nut e as well as of being inserted therein; and,
consequently, the screw thread c', e' are of a slow pitch and coarse also. The
result is that the screw thread c¹ on the lump end is never exposed after the cap or
nute has been screwed onto it and the stop h made fast to it in the position
described. Further, that the disengagement of the lining d from the union, leaves
the cap or nut e on the lump end e instead of requiring the removal of such cap or
nut as a condition precedent to itself.
1 do not confine myself to making the part g'an extension of the flange c³ only.
It may be made fast to the lump end in any other way provided that it occupies
the same relative position.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what.
I claim is :-
1. The combination in a union, of lump end and cap or nut not detachable:
therefrom, as set forth.
2. The combination of lump end and extension; cap or nut, stop to engage with
the extension and side opening to pass the flange on the end of the lining; and.
lining; as set forth.
1
C LL
1000
PHILLIPS & LEIGH,
No. 22 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.