CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF SPINDLES AND. OTHER PARTS OF COTTON MACHINERY
Year: 1871

page_text: G'
LETTERS PATENT to Richard Rennie Underwood and David Thomson,
trading as the Plaskynaston Tube Company, of Ruabon, in the
County of Denbigh, North Wales; for the Invention of "CERTAIN
IMPROVEMENTS IN THE MANUFACTURE OF SPINDLES AND. OTHER PARTS OF
COTTON MACHINERY."
Sealed the 15th March 1872, and dated the 19th September 1871.
PROVISIONAL SPECIFICATION left by the said Richard Rennie Under-
wood and David Thomson at the Office of the Commissioners
of Patents, with their Petition, on the 19th September 1871.
We, RICHARD RENNIE UNDERWOOD and DAVID THOMSON, trading as
the Plaskynaston Tube Company, of Ruabon, in the County of Denbigh,
North Wales, do hereby declare the nature of our said Invention for
CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF SPINDLES AND OTHER PARTS
OF COTTON MACHINERY," to be as follows' (that is to say)
66
Our improvements in the manufacture of spindles used for spinning
cotton or other fibrous material consist in making the body or inter-

page_text: mediate parts between the centres of tubes welded or otherwise; if
welded they may be made in the ordinary way in which gas or steam
iron tubes are made, and into such parts steel centres are applied or
fitted, the whole being finished and polished in the ordinary way, thereby
producing light and inexpensive spindles, small or large, as may be
required.
Secondly. Our improvements relate to the manufacture of short
curved or open jointed face tubes, such as are used in warping and other
spinning machinery, and consist in producing them by the process
known as drawing, such as drawing or shaping skelps of iron for the
manufacture of iron tubes, a process we purpose effecting while the iron
is in a heated state, after which we cut them off to the desired length and
polish the surface by the processes of grinding and buffing.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Rennie Underwood and David Thomson
in the Great Seal Patent Office on the 16th March 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RICHARD
RENNIE UNDERWOOD and DAVID THOMSON, trading as the Plaskynaston
Tube Company, of Ruabon, in the County of Denbigh, North Wales,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of September, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Richard Rennie Underwood and David
Thomson, Her special license that we, the said Richard Rennie
Underwood and David Thomson, our executors, administrators, and
assigns, or such others as we, the said Richard Rennie Underwood and
David Thomson, our executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times;
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF SPINDLES AND OTHER PARTS

page_text: OF COTTON MACHINERY," upon the condition (amongst others) that we, the
said Richard Rennie Underwood and David Thomson, by an instrument
in writing under our hands and seals, or under the hand and seal of
either one of us, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Richard Rennie Underwood,
do hereby declare the nature of our said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement (that is to say)
:-
Our improvements in the manufacture of spindles used for spinning
cotton or other fibrous material consist in making the body or inter-
mediate parts between the centres, or bearing and apex, of iron tubes,
welded or otherwise; if welded they may be made in the ordinary way
in which gas or steam iron tubes are made, and into such parts steel
centres are applied or fitted, the whole being finished and polished in
the ordinary way, thereby producing light and inexpensive spindles,
small or large, as may be required.
In realizing our Invention we proceed in the following way:-We
take a strip of iron of suitable length, regulating the width and gauge
according to the description or diameter of hollow spindle we desire to
make; but to particularize, say we take a strip of iron three and a half
inches wide by 8 gauge, a measurement well known by the rollers of
strip or sheet iron. This strip may be cut off to any convenient length
and formed into a welded tube by any of the best or approved modes
now commonly used, such as by passing them in a heated state rapidly
between concentric rolls or squeezers, or drawn through bells, as may be
preferred. The tube thus welded or otherwise produced we cut up and
divide into suitable lengths ready to receive steel ends, which steel ends
may be formed in any suitable way, but for the production of which the
apparatus known as an oliver will answer well, as we prefer having such
steel tips with a reduced shank for insertion within the tube, which
being done the combined parts are submitted to heat, and by blows and
swages the steel tips and the iron tube are perfectly welded in one; in
this condition the spindle is centred in a suitable lathe and turned down
to the proper size, terminating at the one end with a fine conical apex

page_text: required for other purposes the said steel ends may be otherwise formed
and shaped accordingly.
Figs. 4 and 5 represent detached views of the steel ends or tips C
and D before application which may be readily and conveniently made by
the apparatus known as an oliver, as before referred to, or other suitable
means, the part 6 of Figure 4 and c of Figure 5, when heated to a
suitable heat, being placed in the iron tube and welded,
as before
described. Figs. 6 and 7 are merely drawn to show that the said steel
ends or tips may be constructed of different shapes than shown in
Figures 4 and 5, as in this case the parts d and e for uniting to the ends
of the tube are formed taper.
Having thus described our Invention and the manner of giving effect
to the same, I wish it understood that we do not purpose confining
ourselves to the exact details herein described and exhibited, as the same
may be modified without departing from the spirit of our Invention, as
for instance, the steel ends or tips may be produced in other suitable
forms or shapes to those herein described and exhibited, and applied to
the iron tube in a different manner if preferred, but what we claim and
wish protected by these our in part recited Letters Patent is, the
production or manufacture of hollow spindles for spinning and other
purposes of iron and steel combined, as herein described and exhibited.
In witness whereof, I, the said Richard Rennie Underwood, have
hereunto set my hand and seal, this Eleventh day of March, in
the year of our Lord One thousand eight hundred and seventy-
two
Witness,
RICHARD RENNIE UNDERWOOD. (L.S.)
JAMES S. COCKINGS,
Patent Agent,
Birmingham.