IMPROVEMENTS IN BEARINGS OR SUPPORTS. FOR SHAFTS, AXLES, AND OTHER, MOVING PARTS OF MACHINERY OR APPARATUS.
Year: 1881

page_text: LETTERS PATENT to Lorentz Albert. Groth, K.G.V., Civil Engineer and
Proprietor of the Scandinavian Patent Office, under the Firm of L. A. Groth
& Co., 97, Finsbury Pavement, London, & 20, Forhaabningsholms Allee,
Copenhagen, for an Invention of "IMPROVEMENTS IN BEARINGS OR SUPPORTS.
FOR SHAFTS, AXLES, AND OTHER, MOVING PARTS OF MACHINERY OR
APPARATUS.", A communication from abroad by Amand Gravelin, a Chemist,
of Liège, in the Kingdom of Belgium.
PROVISIONAL SPECIFICATION left by the said Lorentz Albert Groth at the
Office of the Commissioners of Patents on the 10th January 1881..
LORENTZ ALBERT GROTH, K.G.V., Civil Engineer and Proprietor of the
Scandinavian Patent Office, under the Firm of L. A. Groth & Co., 97, Finsbury
Pavement, London, & 20, Forhaabningsholms Allee, Copenhagen.
"IMPROVEMENTS
IN BEARINGS OR SUPPORTS FOR SHAFTS, AXLES, AND OTHER MOVING PARTS OF
MACHINERY OR APPARATUS." A communication from abroad by Amand Gravelin,
a Chemist, of Liège, in the Kingdom of Belgium.
Heretofore the employment of glass, stone, or other such like substances for
bearings and other similar parts of machinery or, apparatus subjected to friction
has not been found practicable because the resisting power of the glass or other
substance has been insufficient for the purpose.
According to the present Invention a substance, such as, for example, woollen
stuff or felt is interposed between the bearing and its shaft, or axle, or between the
moving part and its support, by which means such bearing or support is rendered
very durable, even when applied to the largest motive power engines.
The body of the bearing or support may be composed of glass or crystal,
toughened or not as may be preferred, porcelain, basalt, lava, slag, scoria, fusible or
infusible, silicious or aluminous stones, the fusible borates, and silicates, or other
similar substances.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Lorentz Albert Groth in the Great Seal Patent Office on the
9th July 1881.
LORENTZ ALBERT GROTH, K.G.V., Civil Engineer and Proprietor of the
Scandinavian Patent Office, under the Firm of L. A. Groth & Co., 97, Finsbury
Pavement, London, and 20, Forhaabningsholms Allee, Copenhagen. "IMPROVE-
MENTS IN BEARINGS OR SUPPORTS FOR SHAFTS, AXLES, AND OTHER MOVING
PARTS OF MACHINERY OR APPARATUS." A communication from abroad by Amand
Gravelin, a Chemist, of Liège, in the Kingdom of Belgium.
Heretofore the employment of glass, stone, and other such like substances for
bearings and other similar parts of machinery or apparatus, subjected to friction,
has not been found practicable because the resisting power of the glass or other
substance has been insufficient for the purpose.
In machinery the parts subjected to friction, such as bearings, slides, and so
forth, often suffer deterioration by reason of insufficient lubrication, and they then
also absorb a considerable amount of motive power.
In order to avoid this inconvenience I employ for the manufacture of such parts
glass or crystal, toughened or not as may be preferred, porcelain, basalt, lava, slag,
Ecoria, fusible or infusible, silicious or aluminous stones, the fusible borates and
silicates, and such like, either separately or combined.
By the employment of bearings and other frictional parts of this kind lubrication
is much facilitated, soap and water being quite sufficient.
According to the present Invention a substance such as, for example, woollen
stuff or felt, is interposed between the bearing and its support, or between the
frictional piece and its seat, by which means such bearing or support is rendered
very durable, even when applied to the largest motive power engine.
Instead of woollen stuff or felt, plaster, mastic, sulphur, resin, and other
analogous bodies may be used in some cases with advantage. In some cases for the
purpose of further increasing the strength or solidity of these bearings and other
pieces (which for distinction I call "ruby bearings") any suitable metal may be
associated with the material of the bearing or other piece either inside or outside
the paste composing it, or both at the same time. For example, a metallic wire or
strip bent to and fro any number of times may be placed in the mould, such wire
or strip being imprisoned in the body of the bearing or other piece when it is cast;
or a metallic box enclosing the bearing or other piece in glass or other material
above described may be employed, such as box fitting exactly into the seat of such
bearing or other piece. The object of this box is to strengthen the material of the
bearing or other piece and to hold the pieces together in case of breakage. The
glass or other material is placed in these boxes either in a cold or more or less
warm state, or it may be run in in a fused condition.
Having now described the nature of the said Invention, and the manner in
which the same is to or may be performed, I would have it understood that what
I claim is,-
First. The manufacture and use of bearings and other parts of machinery
subjected to friction made of glass, as hereinbefore described.
Second. The composition of the said bearings and other frictional parts of glass
or crystal, toughened or not, of porcelain, basalt, lava, slag, scoria, fusible or
infusible, silicious or aluminous stones, the fusible borates and silicates, or other
such like substances, either separately or in combination according to requirements,
as hereinbefore described.
Third. The interposition of woollen stuff, felt, or other of the substances

page_text: herein before mentioned between the aforesaid bearings and their supports, or
between the aforesaid frictional pieces and their seats, as herein before described,
and for the purpose set forth.
'
Fourth. The employment of any suitable metal with inside or outside, or both,
of the aforesaid bearings or other frictional pieces, for the purpose of strengthening
or consolidating the same, as hereinbefore described.
.In witness whereof, I, the said Lorentz Albert Groth, have hereunto set my
hand and seal, this Eighth day of July, in the year of our Lord One
thousand eight hundred and eighty one.
· LORENTZ ALBERT GROTH. (L.S.)