AN IMPROVED PROTECTING FERRULE FOR BOILER TUBES
Year: 1884

page_text: I, ISRAEL MORRIS, of Bloxwich, in the County of Stafford, Agricultural Engineer,
do hereby declare the nature of my invention for AN IMPROVED PROTECTING
FERRULE FOR BOILER TUBES to be as follows:-
In the construction of these Boilers a number of Tubes of small diameter are.
used, through which the fire or heat is passed in order to generate steam.
In the end of the tubes near or next the fire or furnace, it is usual to insert a,
Ring, which is commonly called a Ferrule.
This Ring or Ferrule is driven tightly into the end of the tube.
The object in view in the use of the ring or Ferrule, is to obtain, and maintain
a very tight or fast fit, of the end of the tube in the tubeplate of the Boiler.
By the use of severe or variable heat, it is found in practice that both the tube
end and ferrule.are subject to expansion and contraction and the result often is a
very mischevious and troublesome leakage in the tubeplate.
Now I propose by my Invention, or improvement, to obviate to serviceable
degree the difficulty of injurious expansion, by the addition, or by the use of a
Flanged Ferrule.
My flanged ferrule is to be like other-or ordinary ferrules, so far as the ring or
pipe portion of it is concerned-with the addition of a flange at one end, and may.
be briefly described as follows.
The ring or pipe portion of my flanged ferrule is, or consists of a short piece of
tube-about two inches in length and diameter, or more, or less.
A flange of about half an inch in thickness is made upon one end of the ring or
short piece of tube, the diameter of the flange may be about twice the diameter
of the ring.
The flange on the side next the ring-should or will be hollowed at or near its
juncture with the ring, so as to admit or receive as much of the boiler tube end,
as may project outside the tubeplate, while the outer edge of the flange should be
brought into contact with the tubeplate.
It is intended that the flange shall have sufficient diameter or breadth to enable
it to cover a portion of the tubeplate between the tubes-so as to shield and protect
in some measure the tubeplate as well as the tube ends and the ordinary ferrule,
from the distructive action of the fire.
My Invention is or consists of a Flanged Ferrule, which I shall call a Flanged,
Protector Ferrule-made in the manner and for the purposes described.
.

page_text: I, ISRAEL MORRIS of Bloxwich in the County of Stafford, Agricultural Engineer
do hereby declare the nature of my invention for "AN IMPROVED PROTECTING
FERRULE FOR BOILER TUBES" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
This invention is intended to apply to, and to be used in boilers called multi-
tubular, boilers, in which a number of tubes of small diameter are used in order to
generate steam..
A ring commonly called a "ferrule" is often and generally driven inside, or into
the end of the tube next the fire, in order to obtain, and maintain a very tight or
fast fit of the tube end in the tube plate.
It is found in practice that the action of severe and variable heat produces.
expansion and contraction in both the tube ends and the ordinary ferrule, and the
common result is a leakage in the tube plate.
Now I propose by my invention or improvement to obviate to a serviceable
degree the mischief caused by excessive expansion in the tube end and the ordinary
ferrule by the use and provision of an additional ferrule, which I shall call "An
improved protecting ferrule" to be made used and provided as follows:-
2
My protecting ferrule is or consists of a short length of pipe or tube, cast or
otherwise, of any desired length, with a Flange at one end." The pipe. or. tube
portion of my ferrule is to be driven, fairly tight inside the ordinary ferrule so far,
or until the flange shall be in contact with the tube plate or the tube end.
a.
The inside or the side of the flange, next the tube plate, shall be hollowed, or
cupped so as to contain or receive so much of the tube end as is usually extended
outside or through the tube plate.
The flange of my ferrule may be of a diameter greater than the tubes, so as to
cover a portion of the tube plate, and thus the tube plate, the tube end and the
ordinary ferrule may be protected from the action or friction of heat.
The tube or pipe portion of my ferrule I propose shall in some instances, pass a
short distance further into the tube than do the ordinary ferrules, and the extra:
length, or part of it, I propose to encircle or clip by a ring.
This ring shall be tapered inside, or larger at one end than the other internally
so as to form a wedge between the protecting ferrule and the tube, and thus fasten
and hold my ferrule in its proper place.
This fastening ring or wedge shall be open or split on one side so asito adapt
itself, or be free to spring and be driven into any desired position.
10:
1 ¦
3
REFERENCE TO DIAGRAMS.
67
24*
A. Fig 1. represents a portion of the tube with the ordinary ferrule, f, inserted
therein.
B. Fig 2..is the end view of same.
C. Fig 3. represents the wedge ring.
D. Fig 4. is the end view of same shewing the split on one side.
E. Fig 5. represents the protecting ferrule.
F Fio 6 is the end view of same

page_text: Having thus particularly described and ascertained the nature of my inven- .
tion, and in what manner the same is to be performed, I hereby declare that
what I claim is
Firstly, the provision and use of an additional ferrule made in the manner as
Lereinbefore described and illustrated by the accompanying diagrams.
Secondly, the provision and use of the tapered and split fastening ring as a part
of this invention, as also hereinbefore described and illustrated by the
accompanying diagrams.