Improvements in and relating to Roller Bearings.
Year: 1898

page_text: Date of Application, 13th Dec., 1898-Accepted, 25th Feb., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Roller Bearings.
I, WILHELM BAISCH, of Stollberg 2, Rheinland, in the Empire of Germany,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement:-
The constructions of roller bearings hitherto known, generally comprise an
arrangement for preventing sliding friction between their several parts, consisting
in arranging the supporting rollers which take the pressure of the bearing axle,
loose in recesses in a so-called "cage," (a' cylinder-ring or the like), so that the
sliding friction is in this manner limited only to that which takes place between"
the supporting rollers and the sides of the cage.
Further, recently, other constructions of roller bearings have also been proposed,
in which the said cage is no longer used, and' in which all sliding motion is entirely
prevented from taking place by means of an arrangement of intermediate rings
between the supporting rollers. But these forms of construction are so com-
plicated, both as regards their general arrangement and their several parts, that
the advantage which is thereby gained is almost wholly lost again in consequence.
Now the present invention has for its object to obviate the last mentioned draw
back and to provide a construction of 'roller bearing having pure rolling friction,
and which shall be considerably more advantageous than all roller bearings
hitherto known, as regards simplicity and small number of their several moving
parts. Now for the purpose of effecting this object the "transmitting" parts
which are provided between the several supporting rollers; are so arranged that
without employing a cage or other idly rotating subsidiary parts the said
mitting" parts maintain a constant distance between the several supporting rollers*
and in such a manner that not even the slightest' sliding friction can take place
between the same.
trans-
In the annexed drawing which illustrates by way of example practical forms
of this new construction of roller bearing- operating- on the hereinbefore stated
principle.
Figure 1 is a view in transverse section.
Figure 2 is a sectional view on line y-y of Figure 1.
Figure 3 is a view in' transverse section of a modification, and
Figure 4 is a sectional view on line - of Figure 3.
The first form shown in Figures 1 and 2 is constructed as follows:-
:-
Between every two of the supporting rollers B that take the pressure of the
bearing shaft A, there is arranged a subsidiary roller C of smaller diameter than
the rollers B. and these subsidiary rollers C are arranged in such a manner that
their longitudinal axes are situated to the extent of a certain distance a nearer to
the centre of the bearing shaft, than are the longitudinal axes of the supporting
rollers B. By means of this arrangement it is rendered possible that (since the
sum of the lines OH that connect the centres of the rollers B and C together
is greater than the distance 0, 0) as soon as the subsidiary rollers C are situated
say below the horizontal plane of the centre of the bearing shaft, the said sub-

page_text: sidiary rollers will not be able to be brought out of their position by the action
of their own weight, but that they will always be enabled with their extreme ends
to bear and roll upon the inner surface D of the annular grooves D, E, which are
turned in the bearing housing. Every two adjacent supporting rollers B whose
direction of rotation is opposed to the direction of rotation of the bearing shaft A,
transmit the rotary moments acting upon them, to the subsidiary roller situated
between them, and both moments in the same direction, so that the direction of
rotation of the subsidiary roller is the same as that of the bearing shaft, and
consequently any sliding friction is quite impossible.
In the second modification (Figures 3 and 4) the supporting rollers B are
provided at both their ends with journals B, and the latter take into a groove of
corresponding dimensions formed in the bearing housing. The intermediate
elements C¹ consist, in this modification not of rollers, but of balls C¹ which work
on concave races formed in the journals B', or in grooves turned in the housing.
In this construction also, which is however in other respects not so advantageous
as the construction hereinfirst described, there is no possibility of sliding friction
taking place under any circumstances.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) A roller bearing having rotary bodies arranged between the supporting
rollers, characterized by the fact that in the said bearing the distance between
the centres of the bearing shaft and of the supporting rollers is greater than the
distance between the centres of the bearing shaft and of the rotary bodies, and
that further, besides the rotary bodies C, C, which take the rotary motion of the
supporting rollers B in a direct manner with a purely rolling friction, there are
no rotary subsidiary or auxiliary parts employed in the construction of the bearing,
with the exception of the bearing shaft.
(2) A form of construction of the roller bearing specified in Claim 1, in which
the rotary bodies that are arranged between the supporting rollers are constituted
by rollers C which are of smaller diameter than the supporting rollers, and which
bear with their two extreme ends upon and roll on the inner flange D of an
annular groove D, E, that is turned in the bearing housing.
(3) A form of construction of the roller bearing specified in Claim 1, charac-
terized by the fact that the two extreme ends of the supporting rollers B are
provided with journals which are of smaller diameter than that of the supporting
rollers and which are inserted in an annular groove turned in the bearing housing,
whilst the transmission of the rotary motion of the supporting rollers to the rotary
bodies (which are in this case constituted by balls C¹), is effected by the rolling
of the periphery of the journals B₁ of the supporting rollers on the balls.
Dated this 13th day of December 1808
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.