AN. IMPROVEMENT IN THE MANUFACTURE OF METAL TUBES FOR COVERING OR CASEING IRON, WOOD, OR ANY OTHER METAL OR MATERIAL OR FOR SEPARATE) USE
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I GEORGE SAMUEL MARSHALL of 65 Summer Row, Birmingham in the County.
of Warwick, Brassfounder do hereby declare the nature of my Invention for "AN.
IMPROVEMENT IN THE MANUFACTURE OF METAL TUBES FOR COVERING OR
CASEING IRON, WOOD, OR ANY OTHER METAL OR MATERIAL OR FOR SEPARATE)
USE" to be as follows:-
My Invention consists in making brass or other metal tubes by a new process
without soldering; thus-The metal is first cut into strips, it is then drawn through
tools that turn up a small hook on each edge of the metal, the hooks are then
linked together and again drawn through tools which flatten the link and make it.
into a perfect tube, it is then put on iron or other tube, solid iron, wood or any
other suitable material or metal and again drawn through tools to the required size
or shape or it may be used separately.

page_text: n
COMPLETE SPECIFICATION,
I GEORGE SAMUEL MARSHALL of 65 Summer Row Birmingham in the County'
of Warwick, Brassfounder do hereby declare the nature of my Invention for "AN
IMPROVEMENT IN THE MANUFACTURE OF METAL TUBES FOR COVERING OR
CASING IRON, WOOD, OR ANY OTHER METAL OR MATERIAL OR FOR SEPARATE
USE" and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
a
My Invention consists in making brass zinc or any other metal tubes by a new
process without soldering the joints, or floating the tube after it has left the
finishing tools; thus
The bright metal is first cut into strips of the required width for any sized rod
or tube by circular shears; it is then drawn through special tools so shaped that
they form a small hook on each edge of the same strip of metal, one hook on the top
sidė, the other underneath.
The two hooks are then linked together by means of rollers or other tools, the
metal with the hooks linked together is then drawn through dies or tools with a
mandril inside, that flattens the link joint and makes. it into a tube round on the
outside with the surplus metal forced inside.
The tube is then ready to be used seperately; or it is put on iron or other tube,
solid iron, wood, or any other suitable material or metal and drawn through
special finishing dies or tools (made of hard steel the holes being lapped and
polished to make them perfectly smooth,) several times until it is the required size
or shape.
After leaving these tools the tube has a clean bright smooth surface ready for
polishing & lacquering so that it does not require floating or filing but is a finished
article.
The accompanying Drawings illustrate the manner in which my Invention is
carried into effect.
No 1 Shews a flat metal plate or strip.
: "
No 2 Shews the same plate or strip turned up with hooks at each edge.
No 3 Shews the hooks linked together.
No 4 Shews the linked hooks flattened with surplus metal forced inside.
No 5 Shews the finished tube, ready for use seperately, or ready to be drawn on
iron, wood, or any other metal or material.
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'
I claim is
Firstly The use of bright metal in the manufacture.
Secondly The construction of a hook or link joint, that is formed on the one
strip of metal and when finished is perfectly secure without soldering, as herein
described, and shown on the Drawings.
Thirdly To produce a finished tube or cased rod of brass, zinc, or any other
metal which does not require any soldering, filing or floating after it has left the
tools, as herein described, and shown on the Drawings-and
Fourthly The general processes of manufacture as herein described and shown
on the Drawings.
Dated this 21st day of April 1884.