A Metallic Packing for Steam or other Fluid Pressure Joints.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
A Metallic Packing for Steam or other Fluid Pressure Joints.
JAMES ALLAN, 10, Forster Street, Blyth, Northumberland, Marine Engineer,
THOMAS ALFRED REED, Bute Docks, Cardiff, Consulting Engineer, and CHARLES
BENJAMIN CROWE, Bothal, Northumberland, Clerk in Holy Orders, do hereby
declare the nature of this invention to be as follows:-
This invention consists of a. number of narrow rings of metal formed one
within the other but kept apart by means of suitable metal ribs the smallest
ring being slightly larger than the hole of the flange and the largest ring slightly
less than the diameter of the flange. The faces of the rings which come against
the flange are made double concave so that when the joint is screwed up the
sharp edges torm a steam tight joint without the assistance of any other material
such as cement or asbestos as at present in general use.
T
1000
JAMES ALLAN.
CHARLES BENJAMIN CROWE.
THOMAS ALFRED REED.
A Metallic Facking for Steam or other Fluid Pressure Joints.
We, JAMES ALLAN, 10, Forster Street, Blyth, Northumberland, Marine Engineer,
THOMAS ALFRED REED, Bute Dock, Cardiff, Engineer, and CHARLES BENJAMIN
CROWE, Bothal, Northumberland, Clerk in Holy Orders, 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:
This metallic packing consists of two or more rings of different diameters,
the sections of which are concave, the rings are so arranged that the internal
diameter of the small ring is slightly larger than the bore of the pipe or flange,
while the outside diameter of the large ring is slightly less than the outside
diameter of flange.
These two rings are connected together by a series of smaller rings of a
similar section numbered & made to correspond with the bolt holes in the
Hanges. For square oval or triangular shaped flanges the same idea is carried
out only that the outer ring is made to correspond with the shape of the flange
& for joints of large size such as cylinder covers this ring can be made in the
form of a tape & joined together so as to form a whole ring, & for joints in which
it is not necessary to have bolt holes such as boiler stays, the outer & inner
rings are connected by means of a thin sheet of metal. These are made by

page_text: preference of a soft white metal, but could also be made of soft iron copper brass
or zinc.
In order to more clearly describe this invention we append the following
drawings. Fig. 1 is a plan & Fig. 2 section of an ordinary flange joint showing
the connection of the inner & outer rings by means of the smaller rings A.
The rings A at the same time form a complete joint for each bolt hole. Fig. 3
is a plan & Fig. 4 a section of a joint ring in which there are three rings & no
bolt holes such as are used for boiler stays. The letters B, B is the thin sheet
connecting the rings C, C, C, together.
Having now particularly described & ascertained the nature of this our said
invention & in what manner the same is to be performed, we declare that what
we claim as novel is:-
Ist. The connecting of two or more rings of a concave section, and of different
diameters by means of smaller rings of a similar section.
2nd. The connecting of two or more rings of a concave section & of different
diameters by means of a thin sheet of the same metal.
Dated thin 141 J
1000
JAMES ALLAN.
CHARLES BENJAMIN CROWE,
THOMAS ALFRED REED.