IMPROVE- MENTS IN THE MANUFACTURE OF TELESCOPE AND OTHER TUBES
Year: 1852

page_text: : Sealed the 8th January 1853, and dated the 1st October 1852.
PROVISIONAL SPECIFICATION left by the said Moses Poole, at the
Office of the Commissioners of Patents, with his petition, on the
1st October 1852.
I, MOSES POOLE, of Serle Street, in the County of Middlesex, Gen-
tleman, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN THE MANUFACTURE OF TELESCOPE AND OTHER TUBES " to be as
follows:-
This Invention is a communication from America, on behalf of Mr.
Goodyear, the Inventor, and consists of employing a material not hitherto
used in such manufactures, and which is a hard substance produced by
combining India-rubber with sulphur, with or without other materials,
and subjecting the same to heat, till the desired result is obtained.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Moses Poole, in the Great Seal Patent Office, on
the 30th March, 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
MOSES POOLE, of Serle Street, in the County of Middlesex, Gentleman,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of October in the year of our
Lord One thousand eight hundred and fifty-two, in the sixteenth year
of Her reign, did for Herself, Her heirs and successors, give and grant
unto me, the said Moses Poole, Her special licence that I, the said
Moses Poole, my executors, administrators, and assigns, or such others
as I, the said Moses Poole, my 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 "IMPROVEMENTS IN THE MANUFACTURE OF
TELESCOPE AND OTHER TUBES," upon the condition (amongst others) that
I, the said Moses: Poole,, by an instrument in writing under my hand
and seal, 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 Moses Poole, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof (that is to say):
This Invention is a communication from America, in behalf of Mr.
Goodyear, the Inventor, and consists of employing a material not hitherto
used in such manufactures, and which is a hard substance produced by
combining India-rubber with sulphur, with or without other materials,
and subjecting the same to heat till the desired result is obtained; and

page_text: in order that the said Invention may be most fully understood and
readily carried into practice, I will proceed to describe the means pur-
sued by the Inventor. The compound substance above mentioned it is
preferred should consist of two parts by weight of India-rubber and one
part of sulphur, other matters, such as gum lac, gutta percha, pitch and
coal tar, deprived of water by heat, white lead, oxide of zinc, or other
colouring matters, may be used, and even others in like manner to that
which has before been described and practised under other patents, and
to which separately no claim is here made; this Invention consisting of
making tubes of such compounds, and then subjecting them to heat to
change the compound into a hard substance of a whalebone or ivory
like texture; such tubes as are made in moulds may have screws formed
thereon, or screws may be cut on or in the tubes after they have been
subjected to heat. In making such tubes, the compounded materials
are first made into sheets, and then introduced and retained in metal or
plaster moulds during the process of heat, taking care that the edges
come closely together or overlap, to insure a good joint, or where the
material is of sufficient substance, it may be simply bent into a tube-
like form, and the mould dispensed with, or a mandril may be used, the
sheet or material enclosing it at all parts, and the edges caused to over-
lap, or otherwise, to insure a good joint. In using a mandril, it is first
covered with paper, to facilitate its delivery after the heating process.
The heat is to be applied gradually up to 230° Farenheit, say in about
half an hour, and at this temperature the heat is to be retained for
about one and a half hours, and then the heat is to be raised gradually
to 295° to 305° of Farenheit in the remainder of six hours, or the heat
may be raised more quickly if the compound contain much foreign
matter. In this manner may tubes suitable for telescopes and other
uses be made, consisting of a hard substance of a whalebone or ivory
like texture, and the parts and couplings may be moulded with screws,
or have screws cut thereto, and thus offer very ready means of making
telescopes and other articles, and the same will be found very useful;
amongst many other purposes, for receiving and insulating wires for
electric telegraphs. I would remark, that although sulphur is recom-
mended as the best for compounding the above-mentioned substance,

page_text: yet matters containing or giving off products of sulphur by heat in the
process may be employed.
Having thus described the nature of the Invention, and the manner
of performing the same, I would have it understood, that what I claim
is the manufacture of telescope and other tubes by applying a hard sub-
stance of a whalebone or ivory like texture produced from India-rubber
combined with sulphur and subjected to heat, as herein described.
In witness whereof, I, the said Moses Poole, have hereunto set
my hand and seal, this Twenty-eighth day of March in the year
of our Lord, One thousand eight hundred and fifty-three.
MOSES POOLE. (L.S.)
Witness, B. GOBEY.