A NEW COMPOSITION FOR AXLE, SHAFT, AND SPINDLE AND OTHER SIMILAR BEARINGS, AND THE MANUFACTURE OF BEARINGS THEREFROM
Year: 1874

page_text: LETTERS PATENT to Sigismund Cohné, of Soho, London, in the
County of Middlesex, for the Invention of "A NEW COMPOSITION
FOR AXLE, SHAFT, AND SPINDLE AND OTHER SIMILAR BEARINGS, AND THE
MANUFACTURE OF BEARINGS THEREFROM,
"
PROVISIONAL SPECIFICATION left by the said Sigismund Cohné at
the Office of the Commissioners of Patents, with his Petition, on
the 3rd January 1874.
I, SIGISMUND COHNÉ, of Soho, London, in the County of Middlesex,
do hereby declare the nature of my said Invention for "A NEW COM-
POSITION FOR AXLE, SHAFT, AND SPINDLE AND OTHER SIMILAR BEARINGS, AND THE
MANUFACTURE OF BEARINGS THEREFROM," to be as follows:-
―:
My Invention consists in the making of a composition of bad heat
conducting materials as herein-after described, and in the making
therefrom of bearings not requiring any lubricating, such bearings being
applicable for all kinds of engines and machinery, railway and other
cars, and wheeled vehicles.

page_text: For the making of this composition I take of asbestos about seventy-
five per centum, and of plumbago about twenty-five per centum. Both
these materials are well ground and well mixed together. I then add
such a quantity of liquid silicate of soda or liquid silicate of potash as to
produce with the materials above-named a semi-dry paste. This paste
is then pressed under hydraulic or other pressure so as to convert it into
a hard mass. The mass is then dried either by heat or by exposure in
the open air until all humidity is evaporated. Out of this mass is the
bearing cut or turned. The bearing may instead be directly pressed out
of the semi-dry paste into the shape required by a mould or die and
then dried. In either case the bearing produced is dipped into hot
melted paraffin or ozokerit in order that all the pores in the compound,
of which the bearing is made, may be filled with the said paraffin or
ozokerit, or the bearing may be placed in an exhaust or vacuum
chamber and the paraffin or ozokerit thus introduced.
I have herein-above stated the proportions in or about which I make
the composition, but I do not confine myself strictly thereto, but may
somewhat vary them to suit the particular class of bearing for which
the composition is to be used.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Sigismund Cohné in the Great Seal Patent Office
on the 3rd July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SIGISMUND
COHNÉ, of Soho, London, in the County of Middlesex, send greeting. .
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of January, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-.
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Sigismund Cohné, Her special licence that I,
the said Sigismund Colné, my executors, administrators, and assigns, or
such others as I, the said Sigismund Cohné, 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

page_text: "
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "A NEW COMPOSITION FOR AXLE, SHAFT, AND
SPINDLE AND
OTHER SIMILAR BEARINGS, AND THE MANUFACTURE OF BEARINGS
THEREFROM,' upon the condition (amongst others) that I, the said
Sigismund Cohné, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, 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 Sigismund Cohné, do hereby declare
the nature of my 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 :-
My Invention consists in the making of a composition of bad heat
conducting materials, as herein-after described, and in the making
therefrom of bearings not requiring any lubricating, such bearings being
applicable for all kinds of engines and machinery, railway and other
cars, and wheeled vehicles.
For the making of this composition I take of asbestos about seventy-
five per centum, and of plumbago about twenty-five per centum. Both
these materials are well ground and well mixed together. I then add
such a quantity of liquid silicate of soda or liquid silicate of potash as to
produce, with the materials above-named, a semi-dry paste. This paste
is then pressed under hydraulic or other pressure so as to convert it into
a hard mass. This mass is then dried either by heat or exposure in the
open air until all humidity is evaporated. Out of this mass is the
bearing cut or turned. The bearing may be instead directly pressed out
of the semi-dry paste into the shape required by a mould or die and
then dried. In either case the bearing produced is dipped into hot
melted paraffin or ozokerit, or into a solution of paraffin, in benzole, or
other mineral oil, in order that all the pores in the compound of which
the bearing is made may be filled by the said paraffin or ozokerit, or
the bearing may be placed in an exhaust or vacuum chamber and
the paraffin or ozokerit thus introduced.
I may in some instances, in substitution for some proportion of the
asbestos, use a similar quantity of steatite as having the same chemical
base as asbestos and possessing many of its properties.

page_text: I have herein-above stated the proportions in or about which I make
the composition, but I do not confine myself strictly thereto but may
somewhat vary them to suit the particular class of bearing for which the
composition is to be used.
What I claim, as secured to me by the said Letters Patent, is the In-
vention of the combination of asbestos with the other materials as
described in this Specification, for the purpose of making a composition
or compound, in substitution of metal, suitable for axle, railway axle,
shaft, spindle, and other similar bearings, which compound can be
pressed or moulded into the form desired, or shaped or turned like
metal; the manufacture therefrom of bearings for such purposes which
are anti-lubricative, or require no lubrication, and the whole treatment
and application of the compound for the purposes specified.
In witness whereof, I, the said Sigismund Cohné, have hereunto
set my hand and seal, this Second day of July, in the year of
our Lord One thousand eight hundred and seventy-four.
Witness,
W. C. HADDON.
SIGISMUND COHNÉ. (L.S.)