Improvement in Tubular Apparatuses for Heating Feed-water and other Liquids.
Year: 1890

page_text: Date of Application, 1st Mar., 1890
Complete Specification Left, 5th Nov., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvement in Tubular Apparatuses for Heating Feed-water and
other Liquids.
I, ALBERT SCHNEIDER, of No. 15ª Bahnhofstrasse, Magdeburg, Kingdom of
Prussia, Engineer, do hereby declare the nature of this invention to be as
follows: :-
My invention relates to apparatuses for heating feed-water and other liquids,
which consist in a shell, usually of cylindrical form, two tube-plates, and a plurality
of tubes inserted with their ends into the said plates, and the object of the improve-
ment is to prevent leakage between the tube-plates and the tubes, or other defects,
from occurring through unequal expansion or contraction of the tubes and the shell.
For this purpose one of the tube-plates is made somewhat smaller than the shell,
so as to be capable of sliding therein, and, instead of being fixed to the shell, it is
attached to the pipe serving for the induction or eduction of the water or other liquid
to be heated, the end of this pipe being widened to correspond to the size of the tube-
plate. Moreover the shell is provided with a stuffing-box through which passes the
said pipe.
When, under these conditions, an unequal expansion of the tubes and the shell
takes place, the pipe will slide in the stuffing-box, and no strain will be brought to
bear on the tubes. In view of preventing an undue straining of the pipe, the same
may be furnished with a sliding joint, or its main portion is arranged at a right angle
to the apparatus and made long enough to bear without injury the bending to
which it is exposed from the expansion and contraction of the tubes.
Dated the First day of March 1890.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvement in Tubular Apparatuses for Heating Feed-water and
other Liquids.
1, ALBERT SCHNEIDER, of No. 154, Bahnhofstrasse, Magdeburg, Kingdom of
Prussia, 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 invention relates to apparatuses for heating feed-water and other liquids, which
consist in a shell, usually of cylindrical form, two tube-plates, and a plurality of tubes
inserted with their ends into the said plates, and the object of the improvement is to
prevent leakage between the tube-plates and the tubes, or other defects, from
occurring through unequal expansion or contraction of the tubes and the shell.
For this purpose one of the tube-plates is disconnected from and made somewhat
smaller than the shell, so as to be capable of sliding therein, and it is attached to the
pipe serving for the induction or eduction of the water or other liquid to be heated,
the end of this pipe being widened to correspond to the tube-plate. Moreover the
shell is provided with a stuffing-box through which passes the said pipe.
When, under these conditions, an unequal expansion of the tubes and the shell
takes place, the pipe will slide in the stuffing-box, and no strain will be brought to
bear on the tubes. In view of preventing an undue straining of the pipe, the same
may be furnished with a sliding joint, or its main portion is arranged at a right angle

page_text: to the apparatus and made long enough to bear without injury the bending to which
it is exposed from the expansion and contraction of the tubes.
In the annexed drawing Fig. 1 is a vertical sectional view of the lower portion of
a heating-apparatus carried out according to my invention, and Fig. 2 a transverse
section on line A. B, Fig. 1. The apparatus is composed of the cylindrical shell c, the
tubes 6 inserted at the top in a tube-plate fixed to the said shell in the ordinary
manner and therefore not shown in the drawing, moreover of the tube-plate a into
which the tubes are inserted with their lower ends and which is smaller in diameter
than the inside diameter of the shell c, an induction and an eduction pipe, one of
which, viz. the pipe d is fixed to the plate a, and the stuffing-box ffixed to the shell c
and through which the pipe d passes. The said pipe d is widened out at the top to
form a dishie having the same outer diameter as the plate a, and it is secured to the
latter by screws in the manner shown by the drawing. The stuffing-box is likewise
cast with a dish-like portion having flanges with which it is secured to the shell c.
The plate a and the dished tube-portion e are thus free to move within the shell and
the widened part of the stuffing-box whenever the tubes expand or contract more
than the shell c. In order that the stuffing-box may be slipped over the pipe d, the
flange g is screwed on the latter. But, if preferred, the portion of the pipe d
embraced by the stuffing-box may be made larger than the flange g so as to allow the
flange to pass through the box. The pipe d' constituting the prolongation of the
pipe d, is hent to form a right angle with the latter for the purpose already
stated.
With this arrangement the stuffing-box can always be controlled in respect
to its tightness, and no leakage can occur from the tubes. to the inner space of
the shell c.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
In apparatuses for heating feed-water and other liquids, comprising a shell c
tubes, two tube-plates into which the tubes are inserted, and an induction or
eduction pipe d, the construction consisting in disconnecting the tube-plate a from
the shell and fixing it to the pipe d, suitably widened out for the purpose, and
connecting the shell c with the pipe d by means of a stuffing-box f, substantially as
described.
Dated the 5+ Y A NAWADTAAR
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.