Improvements in Cased Tubing.
Year: 1899

page_text: Date of Application, 14th Nov., 1899
Complete Specification Left, 19th May, 1900-Accepted, 23rd June, 1900
Improvements in Cased Tubing.
I, CHARLES HARVEY, of The Swifts. Yardley, near the City of Birmingham,
Manager of Works, do hereby declare the nature of this invention to be as
follows:-
This invention has relation to brass and other metal cased tubings employed
in the construction of bedstead framings, and also in stair roda, cornice poles,
ornamental tubing and the like, and has for its object, the production of a new
article of manufacture, viz., a light yet strong tube consisting of a brass or
other ductile imetal casing, drawn onto a non-metallic foundation or base, formed
of paper, paper pulp, cardboard, wood pulp or the like.
In carrying out my invention as applied to the production of a plain thin-
sheet-metal-cased paper tube or tubular length, I first take a length of suitably
prepared paper and after glueing or pasting the surface, 1 roll or fashion the
same upon a suitable internal but removable support into a hollow tube of the
desired thickness. This support may be in the form of a mandril, but when
it is fashioned upon any other internal support or mould, then it is removed
therefrom and placed upon a suitable bar, headed or other mandril and drawn
through a die or dies, or subjected to the action of rolls or other tools for com-
pacting or consolidating the same. Onto the solid paper foundation tube
thereby formed, a casing or sheath of thin sheet brass or other ductile metal,
preferably in the form of a tube, is slipped or drawn and finally both the casing
and foundation tubes are drawn down together, thereby producing an extremly
light yet strong and rigid or stiff composite tube, capable of being applied to any
of the purposes hereinbefore enumerated.
According to another form of my invention, I may mould or fashion the
foundation tube from paper-pulp or wood-pulp by any suitable well known
process, and which said tube is then encased with a sheet metal covering and
the whole drawn together as previously described in connection with a tube
having a rolled or wrapped paper base.
In the production of ornamental tubular lengths, I produce a composite tube
by either of the processes previously described and then impress the desired
patterns upon the sheet brass, and by the paper foundation readily conforming
to the action of the impressing tools, the said patterns are clearly defined and
there is no tendency to rupture or burst the metal when thin sheet brass, copper
or the like is employed.
The invention is also equally applicable to tubes having corrugated or other
complicated cross sections.
1000

page_text: 240106
I, CHARLES HARVEY, of The Swifts, Yardley, near the City of Birmingham,
Manager of Works, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention has relation to brass and other metal cased tubings employed
in the construction of bedstead framings, and also in stair rods, cornice poles,
ornamental tubing, and the like and is a developement of a former Letters
Patent granted to me and bearing date the 17th day of May 1899 No. 10371.
The present invention has for its object, the production of a new article of
manufacture, riz., a light yet strong tube consisting of a brass or other ductilo
metal casing, drawn onto a non-metallic foundation or base formed of paper,
paper pulp cardboard, wood-pulp or the like.
In carrying out my invention as applied to the production of a plain thin-
sheet-metal-cased paper tube or tubular length such as is represented in the
accompanying drawings, partly in elevation and partly in longitudinal vertical
section in Figure 1, and in cross section in Figure 2, I first take a length of
suitably prepared paper and after glueing or pasting the surface, I roll or
fashion the same upon a suitable internal but removable support into a hollow
tube of the desired thickness, such as shown in longitudinal section and side
elevation in Figure 3 and cross section in Figure 4. This support upon which
the paper is 1olled may be in the form of a mandril, but when it is fashioned
upon any other internal support or mould, then it is removed therefrom and
placed upon a suitable bar, headed or other mandril and drawn through a die
or dies, or subjected to the action of rolls or other tools for compacting or con-
solidating the same. On to the solid paper foundation tube thereby formed,
a casing or sheath of thin sheet brass or other ductile metal, preferably in the
form of a tube, such as represented in side elevation and longitudinal section
in Figure 5 and in cross section in Figure 6. is slipped or drawn and finally
both the casing a and foundation tube are drawn down together after being
placed on a mandril such as c, as shown in Figure 7, thereby producing an
extremely light yet strong and rigid or stiff composite tube, capable of being
applied to any of the purposes herein before enumerated.
According to another form of my invention, I may mould or fashion the
foundation tube from paper-pulp or wood-pulp by any suitable well known
process, and which said tube is then encased with a sheet metal covering and
the whole drawn together as previously described in connection with a tube
having a rolled or wrapped paper base.
In the production of ornamental tubular lengths, I produce a composite tube
by either of the processes previously described and then impress the desired
patterns upon the sheet brass, and by the paper foundation readily conforming
to the action of the impressing tools, the said patterns are clearly defined and
there is no tendency to rupture or burst the metal when the sheet brass, copper
or the like is employed.
The invention is also equally applicable to tubes having corrugated or other
complicated cross sections. Thus Figures 8 and 9 show a front elevation and
across section of a triangular composite tube made according to my invention,
in which the front is longitudinally ribbed or corrugated. Figures 10 and 11
represent similar views of a square tube, the whole of the sides of which are
corrugated, whilst Figures 12 and 13, and also Figures 14 and 15 show two

page_text: differently-corrugated forms of longitudinally corrugated round tube, the solid
paper or like foundation in all these forms being marked and the ductile casing
metal a and in each case the outer surface of the foundation is made to con-
form to the configuration which is imparted to the casing metal by suitable
dies or tools, but the inner surface b' is plain.
In some cases, however, the foundation of the tube may be so formed or
drawn that both the outer and inner surface conform approximately to the
corrugated shape or section of the outer casing. Figure 16 represents such a
tube, partly in elevation and partly in longitudinal vertical section and Figure 17
is a cross section thereof, whilst Figure 18 represents an elevation and Figure 19
of the corrugated paper or like foundation tube b, prior to the application of
the metal a casing thereto and the drawing of the same down collectively into
the finished shape desired.
The invention is also applicable to tubes and tubular articles, triangular
and other polygonal sections and to oval or elliptical shapes, whether with flat,
plain, corrugated beaded, ribbed or other surfaces.
Having now particularly described and ascertained the nature of my said
invention und in what manner the same is to be performed, I declare that what
I claim is:
-
First composite metal-cased tube, or tubular article, comprising a brass
or other ductile metal casing having, or being drawn on to, a non-metallic
foundation or huse formed of paper, paper or other pulp, cardboard or the like,
whereby a light but strong tube or article is obtained substantially as herein
described and also as set forth in the accompanying drawings.
Secondly: The method or process of producing composite metal-cased tubes
and tubular articles of various cross sections, substantially as herein described
and also as set forth.
Dated this 18th day of May 1900
CHARLES HARVEY,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.