Improvements in Tubular Boilers:
Year: 1895

page_text: Date of Application, 6th, Mr., 1895.
Complete Specification Left, 11th Nov., 1895-Accepted, 14th Dec., 1825.
Improvements in Tubular Boilers:
I, MARIUS JULLIEN, of 35. Boulevard de la Major,, Marseilles, Machinery,
Merchant, do hereby declare the nature of this invention to be as follows:-..
My invention has reference to tubular boilers in which the ends of the tubes are
protected by means of ferrules having flanges or outwardly extending parts adapted
to cover the joints between the tube ends and the tube plate and the object of my
invention is to more effectually secure such ferrules in place in order to prevent
their being pushed out by tube brushes, scrapers; or other appliances commonly.
used for cleaning boiler tubes.
For this purpose the inner ends of the ferrules, which are or may be thicker
than the other portions thereof, are formed with longitudinal slits adapted to afford
elasticity and are scoured in place by expansion or by means of a drift or mandril;
or instead of the longitudinal slits (or it may be in addition thereto) 1 construct
the ferrules with projectious on the walls thereof which may be either on the inside.
or on the outside, the arrangement being such that by means of a drift or mandril
portions of the walls where these projections occur may be pressed slightly into the
internal surface of the containing tube, or the ferrule may be made cylindrical.
with or without slits and, be, secured, by means of an expanding tool, adapted to
cause a local, expansion after the manner of a slight.annular ridge.
1
L 1008
Improvements in Tubular Boilers:
1. MARIUS JULLIEN, of 35. Boulevard de .la. Major, Marseilles, Machinery.
Merchant, do hereby declare the nature of this invention and in what mannen ther⚫
samo is to be performed to be particularly described and ascentained in and by..
the following statement :-
My invention has reference to tubular, boilers in which the ends of the tubes are--
protected by means of ferrules baving flauges or outwardly extending parts adapted
to cover the joints between the tube ends and the tube plate and the object of my
invention is to more effectually secure such ferrules in place in order to prevent
their being pushed out by tube brushes, scrapers, or other appliances commonly
used for cleaning boiler tubes.
For this purpose the inner ends of the ferrules which are or may be thicker than
the other portious thereof, are formed with longitudinal slits adapted to afford
elasticity and are secured in place by expansion or by means of a drift or mandril,
or instead of the longitudinal slits (or it may be in addition thereto) I construot
the ferrules, with projections on the walls thereof which may be either on the inside
or on the outside, the arrangement being such that by means of a drift or mandril
ID 77

page_text: portions of the walls where these projections occur may be pressed slightly into the
internal surface of the containing tube, or the ferrule may be made cylindrical with
or without slits and be secured by means of an expanding tool adapted to cause a
local expansion after the manner of a slight annular ridge.
Fig. 1 of the accompanying drawings shows in central longitudinal section part
of a boiler tube inserted into a tube plate and having within it a ferrule constructed
according to my invention.
Fig. 2 shows the slitted end of the ferrule.
Fig. 3 shows in central longitudinal section part of a boiler tube having within
it part of a ferrule of modified construction.
Fig. 4 shows another modification hereinafter described.
Referring to Figs. 1 and 2 the ferrule is of tubular form with a curved flange or
annular projection A which covers the joint B between the end of the tube and
the tube plate D. The part A' of the ferrule is of an external diameter appreciably
less than the internal diameter of the tube C, but the portion A' of the ferrule is
made thicker than the portion A¹ and there are formed in it longitu linal slits A'
adapted to afford olasticity and to enable the ferrulo to be secured in place by an
expander or by means of a drift or mandrel.
Referring to Fig. 3 the portion A' of the forrule is made with external annular
projections A, of which there may be any suitable number, and although no
longitudinal slits are shown in this modification, it may be constructed with such,
and the projections instead of being external may be internal (or there might he
hoth external and internal projections); thus by means of a drift or mandrel
portions of the wall of the ferrule where the projections occur may be pressed
slightly into the internal surface of the containing tube C.
Fig. 4 illustrates a modification in which the ferrule, made cylindrical, has been
secured by means of an expanding tool whereby local expansion creating a slight
anonlar ridge A has been effected.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manuer the same is to be performed declare that what I'
claim is :-
1. In a tubular boiler wherein the ends of the tubes are protected by means of
ferrules having flanges or outwardly extending parts adapted to cover the joints
between the tube ends and the tube plate, forming the inner ends of the ferrules
with internal slits adapted to afford elasticity and secure the ferrules in place
substantially in the manuer set forth with reference to the example illustrated in
Figs. 1 and 2.
2. In a tubular boiler the application and use as described of ferrules with
flanges or outwardly extending parts adapted to cover the joints between the tube
ends and the tube plate and with inner ends A' made thicker than the tubular
portion A of the ferrule, such thicker portious being formed with longitudinal
slits Aas described.
3. In a tubular boiler the application and use as described of ferrules constructed
with projections on the walls thereof whether on the inside or on the outside the
arrangement being such that by means of a drift or mandrel portions of the wall
where the said projections occur are pressed slightly into the internal surface of
the containing tube substantially as described.
4. The modification described with reference to Fig. 4 of the drawings.
Dated this 11th day of November 1905
Dated this 11th day of November 1905
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.