Improvements in Ball or Roller Bearings.
Year: 1899

page_text: Date of Application, 15th Mar., 1899
Complete Specification Left, 28th Nov., 1899-Accepted, 17th Feb., 1900
Improvements in Ball or Roller Bearings.
I, MATHIEU FOLDART, of Quai du Hainaut, Brussels, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
The present invention relates to a ball bearing which avoids the wear and
tear of the fixed sleeve by reason of the action of the balls, at the points that take
up the load directly, which is the case in the existing ball bearings designed to
bear heavy loads.
In the apparatus which forms the subject of the present invention the spherical
balls are replaced by elongated balls having a cylindrical contact surface, and
otherwise known as small cylinders or rollers.
In order to obviate the possibility of the rolling motion of these cylinders
becoming converted into friction by reason of the greater surface of contact and
from the influence of certain abnormal conditions of rolling and loading, I may
arrange in the casing of the bearing a complete rolling gear consisting of three
superposed series of rollers the two extreme rollers of which will rotate in the
same direction
The gear is composed of two sleeves, one, an inner one, which is mounted on the
axle (that is to be carried in the bearing), and the other or outer one which
is mounted in the casing proper. The rollers are placed between the two sleeves,
and the rings which are fixed to the inner sleeve serve to separate the rows
of rollers.
The whole is maintained in place by a plate, a stop or buffer having a spring
action mounted on the cover of the casing.
I, MATHIEU FOIDANT, of 63, Quai du Hainaut, Brussels, in the Kingdom of
Belgium, Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:
In ball bearing boxes designed to support heavy loads (such as in tramways,

page_text: omnibuses, trucks and wagons) it is necessary to harden and to rectify or adjust
the two sleeves constituting the bearing box, in a very special manner.
In spite of all the care that can be bestowed upon those delicate and tedious
operations, there arrives nevertheless after a certain period a time at which the
fixed sleeve becomes worn by the action of the balls at those points which receive
the load direct.
The formation of these hollows renders the bearing useless, and therefore it
is absolutely necessary to obviate this drawback.
Now this present invention has for object to make certain improvements
in ball bearings and in the balls, which improvements are intended to remedy
the drawbacks referred to above.
In the annexed drawings,-
Figure 1 is a longitudinal section of the bearings,
Figure 2 is a cross section of the same,
Figure 3 is a longitudinal section of the bearing with the rolling arrange-
ment complete.
Figure 4
a cross section of the same.
Figure 5 is a partial cross section of the same on a larger scale.
As shown in Figure 1, the balls, whose spherical form has been the cause of
the formation of the hollows referred to above, have here been replaced by
elongated balls g having a cylindrical surface of contact, in other words by small
cylinders or rollers..
In order to obviate the possibility of the motion of these small cylinders, by
reason of the greater contact surface and under the influence of certain abnormal
conditions of rolling motion, or of loading, becoming converted partially or
temporarily into a frictional motion, I have had the idea of arranging in the box
a complete rolling arrangement consisting of three series of rollers g¹ superposed
above one another in lozenge-fashion, the inner and outer series of rollers
turning in the same direction (see Figure 3). From the point of view of the
rolling motion this arrangement is preferable to the one having one series of
balls or rollers because the load is thereby distributed more uniformly. More-
over this system has sufficient rigidity.
The examples of boxes shown in the accompanying drawings are composed
of two sleeves, an inner sleeve A mounted on the axle C, and an outer sleeve G
mounted in the bearing or box proper F. The movable rings f separate the rows
of rollers, and the whole arrangement is kept in place by a plate I), the abut-
ment and the cover of the box.
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) In a ball box bearing, rows of small cylinders or rollers arranged between
movable rings mounted on the inner sleeve of the box or bearing for the purpose
specified.
4
(2) In a ball box bearing, rows of small cylinders or rollers arranged in thrre
series superposed above one another in lozenge-fashion between movable rings 4
mounted on the inner sleeve of the box or bearing, for the purpose specified.
(3) Ball bearings constructed and arranged substantially as hereinbefore
described and shown.
d this 20th day or November 1899.
ROBERT E. PHILLIPS, Assoc. M.Inst.C.E., M.I.Mech.E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.