Improvements in Roller Bearings.
Year: 1899

page_text: Date of Application, 24th Aug., 1899--Accepted, 25th Nov., 1899
COMPLETE SPECIFICATION.
Improvements in Roller Bearings.
I, JOSEF DERTINA, Graz, Bergmanngasse 2011, in the Empire of Austria, a
subject of the Emperor of Austria, Engineer, do hereby declare the nature of
this invention, and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:—
This invention has reference to improvements in roller bearings for a series
of bearing and intermediate rollers revolving about each other and is particularly
designed to avoid the sliding friction of the rollers upon each other and upon
the journals which to my knowledge it has not been possible to overcome with
the various roller bearings now in use.
In order that my invention may be readily understood and carried into effect
by those skilled in the art, I will proceed to describe the same with reference
to the drawings hereunto attached which illustrate a form of execution of the
invention.
In the drawings: Fig. 1 shows a longitudinal section and Fig. 2 a cross section
of an arrangement embodying my invention.
a designates a shaft to the ends of which the parts a', a¹, are rigidly attached.
c, c, are annular grooves in the parts a, a. is a box or sleeve within which
the shaft with its attachments revolves by the aid of the rollers d, e, f, g
respectively. Or I may arrange the central shaft a to be stationary and the
box or sleeve to rotate about it. The bearing rollers d, e alternate with the
intermediate rollers f, g of smaller diameter which they are made to touch, as
is clearly shown in the drawing. The bearing rollers on the other hand with
their larger diameter touch against the inner walls of the box or sleeve b and
are also placing themselves against the elastic ring which is arranged con-
centric to the shaft a. The bearing rollers d, e are supported by the inner sur-
face of the annular groove c upon which they rest with their heads & the
diameter of which is smaller than that of the roller c. The outer surface c² of
the annular groove c serves for the support of the heads g of lesser diameter than
that of the intermediate rollers to which they are attached.
It is obvious that the diameters of b, e, of f, e, and of d and g may be
easily given such relative proportions as to entirely do away with sliding friction
so that the operating parts are only exerting a friction of rolling upon each
other.
My invention is capable of various modifications without departing from the
alternate arrangement of peculiarly journaled bearing and intermediate rollers.
Thus I may construct both the rollers and the inner and outer surface of the
annular flange which serves as a journal, of conical shape, both tapering to a
common point or any other shape may be given to the rollers or journals.
Having now described my invention and ascertained the nature of the same,
and in what manner the same is to be performed, I declare that what I claim
is:-
In roller bearings the arrangement of bearing and intermediate rollers alter-

page_text: nating with each other, the bearing rollers touching the intermediate rollers and
the inner surface of a box or sleeve (b) including the system of rollers, the said
rollers being provided with heads of smaller diameter, an annular groove (e),
being provided for the reception of said roller heads, the heads of the bearing
rollers touching the inner surface of said annular groove while the heads of
the intermediate rollers rest against the outer surface of the same, substantially
as and for the purpose set forth.
Dated this 18th day of Just 1800