Year: 1898

page_text: I, PERCY HULBURD, of the Hulburd Engineering Company, of 150, Leaden-
hall Street, in the City of London, Contractors, do hereby declare the nature of
this invention to be as follows:
My invention relates to joint rings for use in connection with pipes and tubes
having flanged or other joints.
:
Such rings when made of metal such as copper are usually as small as possible
in order to avoid the use of an unnecessary amount of metal. In applying such
rings, however, there is difficulty in bringing the apertures into axial align-
ment with the apertures of the pipes or tubes. The object of my invention is
to overcome this difficulty and to this end it consists in combining with a joint
ring an extension piece of tin plate or some other cheap material of a diameter
suitable to the space between the bolts for tightening the flanges together, so
that when the ring is placed in position and the said extension piece is resting
against the bolts the proper position of the ring will be ensured.
In practice I sometimes find it advantageous to make the joint ring with a
peripheral groove into which an extension ring can be sprung.
It will be understood that the joint ring is of greater thickness than the
extension ring so that the latter will form no impediment to the proper screwing
up of the joint.
Dated the 30th day of November 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.
I, PERCY HULBURD, of the Hulburd Engineering Company, of 150, Leaden-
hall Street, in the City of London, Contractors, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
My invention relates to joint rings for use in connection with pipes and tubes
having flanged or other joints.
Such rings when made of metal such as copper are usually as small as possible
in order to avoid the use of an unnecessary amount of metal. In applying such
rings, however, there is difficulty in bringing the apertures into axial align-
ment with the apertures of the pipes or tubes. The object of my invention is
D917

page_text: to overcome this difficulty and to this end it consists in combining with a joint
ring an extension piece of tin plate or some other cheap material of a diameter
suitable to the space between the bolts for tightening the flanges together, so
that when the ring is placed in position and the said extension piece is resting
against the bolts the proper position of the ring will be ensured.
My invention will be readily understood by reference to the accompanying
drawing, in which:—
Figure 1 is an elevation of a joint ring constructed according to my inven-
tion, and
Figure 2 is a section on the line 2-2 Figure 1.
Figure 3 is a sectional view illustrating the application of my ring to a
pipe joint.
a is the joint ring proper which may be grooved or serrated upon its surface
as shewn in the drawing, or which may be of square, circular, oval, triangular
or other suitable shape, and 6 is the extension ring which is applied thereto
as shewn in the drawing. The joint ring a is provided with a peripheral groove
into which the extension ring 6 is sprung, but it is to be understood that the
said extension ring may be applied in any other desirable manner, for instance,
it may be soldered to the said ring. In all cases, however, it will be under-
stood that the said joint ring must be of greater thickness than the extension
ring so that the latter will form no impediment to the proper screwing up or
making of the joint. It will also be understood that the said extension piece b
may be of circular, oval or other shape according to the shape of the flanges
in connection with which it is to be used. As shewn in Figure 3, the ring is
represented as being of a diameter corresponding with the space between the
bolts which tighten the flanges together, but it will be obvious that the ring
may be of larger diameter and have formed in it holes or recesses corresponding
with the positions of the said bolts, this latter being of special advantage when
the ring is used in connection with joints having oval flanges tightened together
by two bolts only.
:
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 improvement in connection with metal jointing rings consisting in
combining therewith an extension piece or plate, substantially as, and for the
purpose, described.
2. The manufacture and use of jointing rings provided with extension pieces
or plates, substantially as described.