Improvements in Safety Tube Stoppers.
Year: 1897

page_text: Date of Application 10th Sept., 1897-Accepted, 4th Dec., 1897
COMPLETE SPECIFICATION.
Improvements in Safety Tube Stoppers.
I, DAVID JOHN MORGAN, of 12 Windsor Road, Barry, in the county of Glamorgan,
Engineer, 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 present invention relates to what are known as safety Tube Stoppers, such for
instance as are employed for stopping the efflux of steam and water from a burst,
collapsed or leaky Tube of a Multitubular, Marine or similar Steam Generator, and the
object of my present improvements is to so arrange and form the adjustable nuts of
the Tube Stopper that the end of the Stopper nearer the operator may be more
quickly and safely sealed within the front end of the burst or leaky Tube, and that
the escape of steam and water along the threaded parts of the Stopper Tube is
obviated; and an annular metallic packing may be used thereby rendering the
Baid Tube stopper the more lasting; to attain which I construct and arrange my
improvements substantially as described with reference to the accompanying sheet of
drawings in which
Figs 1 and 2 are longitudinal sectional elevations of my said improved Safety
Tube Stopper.
Similar letters of reference denote corresponding parts in each Figure.
The tube T of the Safety Tube Stopper (which may be divided longitudinally and
screwed together by a special socket S hereinafter more fully described) is arranged
with its nut N conical in form on its surface n¹ which bears within the end of the burst,
collapsed or leaky Tube P of boiler, by which means it is more quickly adjusted in
order to close up the front or operating end of said Tube P, and the back or
adjustable nuts Ŕ are preferably made of cast iron and each has an annular flange r
extending horizontally and preferably tapered, and the annular space between said
flange and the tube T is filled up with red lead t¹ or similar substance so as to
effectually prevent the escape of steam and water along the thread as will be well
understood. Where the tube T is made in two horizontal parts to suit short stoke-
holes it may be screwed into a socket S made with similar annular flanges
filled up with red lead t¹ in like manner as shown at Fig. 1. and at such short Stoke-
holes the operating rod J may be divided and hinged together as shown also at
Fig. 1. Between the nuts R and N and R and N1 instead of placing ordinary india-
rubber asbestos or similar packing material I find it advantageons to employ either
an internally coned pliable or soft metal ring B or a corrugated pliable metal ring B¹
as shown for making the joints between the burst, collapsed or leaky tube of boiler
and the safety stopper.
and
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I would have it understood
that I make no claim in a safety Tube Stopper of a Tube T or rod J or nut N¹ neither to
ordinary packing as these parts have been previously used and are well known but
I declare that what I claim is
1 In Safety Tube Stoppers the combination with a threaded tube T and not №1

page_text: of annular horizontally flanged nuts R (their annular spaces being filled with red lead)
and a conically extended front nut N substantially as described and for the attainments
of the object specified.
2. In use with the Safety tube Stopper such as described the internally coned
pliable metal packing ring or washer B or corrugated packing ring B¹ substantially 5
as described.
1