AN IMPROVED PIPE UNION OR JOINT
Year: 1885

page_text: We, JOHN GILMORE, of the Vicarage, Lower Norwood, in the County of Surrey,
Clerk in Holy orders, and WILLIAM RICHARD CLARK, of 3 Danby Road, in the
County of Surrey, Mechanician, do hereby declare the nature of our invention for
'AN IMPROVED PIPE UNION OR JOINT,'” to be as follows:-
86
Our invention relates to unions such as are used for uniting the ends of two
pipes together, with a steam, gas, or water tight joint, and is designed to effect this
purpose in a more secure and efficient manner than has hitherto been the case, and
to give a longer life to the packing.
In the ordinary union at present in use, the washer of leather, india-rubber, or
other similar material, lies somewhat unprotected on the faces of the pipes that
come together, and thus can readily be forced out of place by the internal pressure,
and further it is frequently the case, in the union as at present used, that although
the union joint may be tight in one direction, that a leakage is still very liable to
occur between the top of the fly nut and the surface of the pipe on which it slides.
We avoid both these disadvantages in the construction of our improved union.
We insert a packing strip of leather, indiarubber, or other suitable material, in a
deep recess let into the flange of one of the pipes, and upon the outside wall of this
recess we cut a screw thread over which the fly nut, provided with a corresponding
female thread, engages. The end of the other pipe terminates in a shouldered
mouth of larger diameter than the bore of the pipe, the size of the expanded
mouth corresponding with the position of the recess in which the packing piece is
inserted, so that when the two mouths of the pipes are brought together, the
expanded mouth of the one, fits into the deeply recessed groove containing the
packing piece of the other.
The fly nut is slipped over the pipe with the shouldered mouth piece, the top of
the fly nut loosely fitting the exterior of the pipe and coming home on the under
edge or shoulder of the said expanded mouth piece. Thus, as the fly nut is
screwed home upon the other part of the union, it presses the pipe with the
expanded mouth upon the packing strip at the bottom of the recess in the flange
of the other pipe.
.
The external periphery of the fly nut and of the flange on the other end of the
adjoining pipe may be milled, or formed with hexagonal or octagonal faces, or in
other convenient methods, to enable the user to easily rotate the fly nut relatively
to the other pipe.

page_text: We, JOHN GILMORE, of The Vicarage, Lower Norwood, in the County of Surrey,
Clerk in Holy Orders, and WILLIAM RICHARD CLARK, of 3 Danby Street, Peckham,
in the County of Surrey, Mechanician, do hereby declare the nature of this inven
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
Our invention relates to unions such as are used for uniting the ends of two
pipes together, with a steam, gas, or watertight joint, and is designed to effect this
purpose in a more secure and efficient manner than has hitherto been the case, and
to give a longer life to the packing.
In the ordinary union as at present in use, the washer of leather, india-rubber, or
other similar material, lies somewhat unprotected on the faces of the pipes that
come together, and thus can readily be forced out of place by the internal pressure,
and further it is frequently the case in the union, as at present used, that although
the union joint may be tight in one direction a leakage is still very liable to occur
between the top of the fly nut and the surface of the pipe on which it slides.
We avoid both these disadvantages in the construction of our improved union.
In order that our invention may be the better understood, we now proceed to
describe the same in relation to the drawings hereunto annexed, reference being
had to the letters and figures marked thereon. Like letters refer to like parts
throughout the drawings.
Figure 1 is a longitudinal section through our improved union,
Figure 2 is an outside view of the same.
Figure 3 shows our joint adapted to a tap.
We insert a packing strip A of leather, india-rubber, or other suitable material
in a deep recess let into the flange of one of the pipes, and upon the outside wall B
of this recess we cut a screw thread over which the fly nut O provided with a
corresponding female thread engages. The end of the other pipe terminates in a
shouldered mouth D of larger diameter than the bore of the pipe, the size of the
expanded mouth corresponding with that of the recess in which the packing
piece A is inserted. When the two mouths of the pipes D and E are brought
together, the expanded mouth of the one fits into the deeply recessed groove
containing the packing piece A of the other.
The fly nut C is slipped over the pipe with a shouldered mouth piece D, the top
of the fly nut loosely fitting the exterior of the pipe, and coming home on the
under edge or shoulder of the said expanded mouth piece D.
Thus, as the fly nut C is screwed home upon the other part of the union B, it
presses the mouth D of the other pipe upon the packing strip A at the bottom of
the recess in the flange of the other pipe E.
The external periphery of the fly nut C and of the flange F of the other end of
the adjoining pipe may be milled or formed with hexagonal or octagonal faces in
any other convenient methods to enable the user to easily rotate the fly nut
relatively to the other pipe.

page_text: Our joint may readily be applied to the tap of beer barrels for the attachment of
the pipe leading to the engine as shown in figure 3.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:—
The construction of a pipe union or joint in which one flange is deeply recessed
upon its face to receive a packing strip and the outer wall is externally screw cut
the mouth of the other pipe being expanded with a square shoulder so as to fit into
the grooved recess aforesaid, the joint being made by an internally screwed fly nut
engaging in the aforesaid external screw and bearing on the aforesaid square
shoulder of the other pipe, substantially as and for the purposes specified,
Dated thin and ...
Mah 1000
FELL & WILDING,
Agents for the Applicants.