Improvements in and Apparatus for the Manufacture of Metallio Tubes, Boiler Flues, and other Cylindrical Articles of Metal.
Year: 1890

page_text: Date of Application, 11th Jan.. 1890
Complete Specification Left, 9th Oct., 1890-Accepted, 15th Nov.. 1890
PROVISIONAL SPECIFICATION.
Improvements in and Apparatus for the Manufacture of Metallio
Tubes, Boiler Flues, and other Cylindrical Articles of Metal.
I, JOHN DEVONSHIRE ELLIS of the Atlas Works Sheffield in the County of York,
Engineer and Iron and Steel Manufacturer, do hereby declare the nature of this
invention to be as follows :—
My invention relates to the making of metallic tubes, boiler flues and other metallic
articles in such a manner as will ensure a true cylindrical form being given to such
articles.
According to my invention I provide an apparatus wherein I use a vertical centre
column fixed at the lower end into the centre of the floor of a casing enclosing the
machine. The top end of the column is supported by a moveable bracket hinged into
the walls of the casing. This bracket is elevated when the tube or flue or other article
in process of manufacture is put over the column and is brought back into its position
of support when such tube or flue or other article is in place by means of a lever and
counterbalance weight. On this centre column is a sleeve or slide, moving hori-
zontally and carrying convex blocks of radius in accordance with the inside of the
tube flue or other article and adjustable to different radii by set screws or equivalent
means. These surfaces of the blocks may be plain or they may be shaped according
to the pattern to be impressed upon or maintained in the interior of the tube or flue
or other article.
Corresponding with the centre column is a moveable block attached to a double-
action hydraulic rain. This block is the full length of the tube or flue or other article
to be dealt with and carries concave radius blocks to suit the radius of the outside of
the tube or flue or other article. The surfaces of these concave blocks are plain or
may be shaped according to the pattern to be impressed upon or maintained on the
exterior of the tube or flue or other article.
Connected with this moveable block are three vertical steadying girders moving
horizontally and so placed as to form with the block the four points of a square and
moving in or out in correspondence with the action of the block. These girders are
attached to the hydraulic ram by duplex levers and wedges and by their action the
tube flue or other article is kept perfectly central during the application of the hydraulic
pressure and any tendency to an oval or twisted form is prevented.
At the lower end of the fixed central column is a revolving table upon which the
tube flue or other article is placed vertically. This table is turned by suitable gearing
and by means of it every portion of the tube flue or the like is brought successively
into position for the application of the hydraulic pressure.
When the tube flue or other article is in position as above described, pressure is
applied to that portion of it between the concave and convex blocks, and by the action
of the revolving table each successive portion of the tube flue or the like is similarly
blocked and thus every cross-section thereof is made truly cylindrical.
Dated this 11th day of January 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in and Apparatus for the Manufacture of Metallic
Tubes, Boiler Flues, and other Cylindrical Articles of Metal.
I, JOHN DEVONSHIRE ELLIS of the Atlas Works Sheffield in the County of York,
Engineer and Iron and Steel Manufacturer 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 the making of metallic tubes boiler flues and other metallic
articles in such a manner as will ensure a true cylindrical form being given to such
articles. According to my invention I provide an apparatus which I will describe
with reference to the accompanying drawings. Figure 1 being a plan and Figure 2
an elevation of a machine constructed according to my invention. A is a vertical
centre column fixed at the lower end into the centre of the floor of a casing ✗
enclosing the machine. The top end of the column A is supported by a moveable
bracket B hinged into the walls of the casing. This bracket is elevated when the
tube or flue N or other article in process of manufacture is put over the column and
is brought back into its position of support (when such tube or flue or other article
is in place) by means of a lever C and counterbalance weight D. On the centre
column A is a sleeve E or slide moving horizontally and carrying convex blocks F
of radius in accordance with the inside of the tube flue or other article to be
operated upon and adjustable to different radii by set screws a or equivalent means.
The outer surfaces of the blocks F may be plain or they may be shaped according to
the pattern to be impressed upon, or maintained in the interior of the tube or Hue
or other article.
Corresponding with the centre column A is a moveable block G attached to a
double action hydraulic ram H. This block is the full length of the tube or flue
or other article to be dealt with and carries concave radius blocks g to suit the radius
of the outside of the tube or flue or other article. The surfaces of these concave
blocks 9 may be plain or they may be shaped according to the pattern to be
impressed upon or maintained on the exterior of the tube, or flue, or other article.
Connected with this moveable block G are three vertical steadying girders J J¹
and J2 moving horizontally and so placed as to form with the block the four points
of a square and moving in or out in correspondence with the action of the block.
These girders are attached to the hydraulic ram by duplex levers L L and wedge
plates K K. The levers L convey motion from the upper beam g' connected to the
block. G to the lower beam 9* connected to the girder J2 and the levers L' convey
motion from the lower beam g² of the block G to the upper beam g³ of the girder J.
The wedge plates K are attached to the said beams and have slots k in them which
when the plates are moved over each other force the studs j connected with the
girders J and J¹ inwards and outwards to correspond with the movements of the
girder J2 and pressing blocks, and by their action the tube flue or other article is
kept perfectly central during the application of the hydraulic pressure and any
tendency to an oval or twisted form is prevented.
At the lower end of the fixed central column. A is a revolving table M upon
which the tube or flue N or other article is placed vertically. This table is turned
by suitable gearing for example by the wheel m and gear m² and by means of it
every portion of the tube flue or the like is brought successively into position for
the application of the hydraulic pressure.
When the tube flúe or other article is in position as above described pressure is
applied to that portion of it between the concave and convex blocks and by the
action of the revolving table each successive portion of the tabe flue or the like is
brought into position and similarly blocked and thus every cross section thereof is
made truly cylindrical.

page_text: 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 1
claim is :-
1. The arrangement and combination of parts constituting a machine or apparatus
for use in the manufacture of metal tubes flues or other articles substantially as
herein before described and illustrated in the accompanying drawings.
2. In machines or apparatus for use in the manufacture of metal tubes flues or
other articles the combination of a support for the tube or the like capable of
being rotated and pressing and supporting devices arranged longitudinally of the tube
and acting throughout its length substantially as and for the purposes hereinbefore
described.
3. In the manufacture of metal tubes, flues, or other articles the pressing of the
tube or the like throughout its length in portions presented successively to the
pressing devices in a machine or apparatus substantially as hereinbefore described
and illustrated in the accompanying drawings.
D1 11• out
2000
J. H. JOHNSON & Co.,
Agents.