MENTS IN CROSS TUBES FOR THE FLUES AND FURNACES OF STEAM BOILERS
Year: 1884

page_text: I WILLIAM BENTLEY, 39 Vaughan Street Middlesbrough on-Tees in the County
of York, Boilersmith, do hereby declare the nature of said invention of IMPROVE-
MENTS IN CROSS TUBES FOR THE FLUES AND FURNACES OF STEAM BOILERS, to be
as follows:-
;-
My invention consists in constructing Boiler Tubes with three or more onds (as
per drawing) the said Tubes to be welded and made seamless, and Flanged at each
or any end that may be required, their dimensions will vary to suit the size of
Boilers they are intended for. The three-way Tube (marked. upon the drawing as
No 1) can be used in an ordinary Boiler with one or two flues as a Water Bridge
by being placed at the end of Fire bars in the Fire box-The four way Tube
(marked upon the drawing as N° 2) can be used in Vertical Boilers, its four-ways
branching out at right angles to each other, giving more heating surface and a
better circulation of Water, and will strengthen the Fire Box at four points, and
only take up the same space as ordinary Tube (or rather fill up the space at both
sides of ordinary Tube) The six way Tube (marked upon the drawing as No 3)
can be used in any circular Fire box where great heating surface is required. The
four-way Tube (marked upon the drawing as No 4) can be used in Locomotive
Boilers, if placed in Fire Box as shown on drawing, it would strengthen the Fire
Box Top, so as to dispenso with Roof Stays and give greater heating Surface
The Figures (marked upon the drawing as No 5.) indicates the method of making
the Tube (plate Iron or plate Steel) will be stamped to this shape and as many as
required Welded together.

page_text: COMPLETE SPECIFICATION.
WILLIAM BENTLEY 39 Vaughan Street Middlesbrough on Tees in the County
of York Boilersmith do hereby declare the nature of said invention for IMPROVE-
MENT IN CROSS TUBES FOR THE FLUES AND FURNACES OF STEAM BOILERS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
My invention consists in constructing Cross Tubes for Flues and Furnaces of
Steam Boilers from Plate Iron or Plate Steel, with Three, Four, or Six ends, the
Baid Tubes to be Welded, and made Seamless, and Flanged at each or any end that
may be required, their dimensions will vary to suit the size of Boilers they are
intended for.
The Three-way Tube (marked upon the drawing as Figure 1) can be used in
Boilers with one, or two Flues, as Fire-bridge by being placed at the far end of
Fire-bars in Fire-box.
The Four-way Tube its ends branching out at right angles to each other (marked
upon the drawing as figure 2) can be used in Vertical Boilers, and besides giving
great heating surface, will strengthen the Fire-box at four points, and only take
up the same space as ordinary Tubes, or rather fill up the space at both sides of
ordinary Tube.
The Six-way Tube (marked upon the drawing as figure 3) can be used in
circular Flues or Fire-boxes, where great heating surface is required.
The Four-way Tube with two of its branches upon the top side (marked upon
the drawing as figure 4) can be used in Locomotive Boilers, and if placed in Fire-
box it will strengthen the Fire-box top, so as to dispense with Roof-stays, and give
greater heating surface.
2
The Figures (marked upon the drawing 5 and 6) represent the form of Cast Iron 2
Blocks for making the Tubes they can be fixed in an .hydraulic press, or under a
steam hammer, in the ordinary way of fixing tools in such machinery.
The figures (marked upon the drawing 7 and 8) shows the shape of Plate after
it has been stamped and trimmed at the edges.
The Figure (marked upon the drawing 9) represents the form of Plate before 3
being pressed, and if the Tubes be taken as eight inches diametor when finished,
this size of Plate will give the allowance of Plate required for shaping, trimming,
and lap welding, other sizes of Tubes will require the same in proportion to their
diametor.
The Figure (marked upon the drawing 10) shows how the parts are held 3
together during the process of beating, and welding. The welding is done upon a
mandrill, and the two rows of dotted lines (marked upon the drawing as figures 1.
2. 3 and 4) shows the line of welding upon both sides of Tube.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what 4
I claim is
1st The making of Cross Tubes for the Flues and Furnaces of Steam Boilers
from Plate Iron or Plate Steel, with three, four, or six ends the same to be Welded

page_text: and made seamless, and Flanged at each or any end that may be required, and
that their dimensions will vary to suit the size of Boilers the said Tubes are
intended for.
2nd The Stamping or Shaping of Plate Iron and Plate Steel to the form
indicated by figures marked upon the drawing 7 and 8 and that of Welding as
many of the said Plates together as will make Cross Tubes for the Flues and
Furnaces of Steam Boilers.