Improvements in or relating to Ball Bearings.
Year: 1899

page_text: Date of Application, 6th Nov., 1899-Accepted, 27th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in or relating to Ball Bearings.
A communication from EMILE BELVAL, Manufacturer, of Vassy (Hte. Marne)
France.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of London,
Chartered Patent Agent, 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 present invention relates to ball bearings applicable to all kinds of rolling
movements and particularly to bearings used in transmission gearing. The device
comprises a metal casing, with lugs on the sides for bolting the parts together,
in which casing is arranged an annular outer race made of tempered and hardened
steel. A second annular device forming the inner race is conically shaped and
placed over a conical split tube on the shaft, tightening means being provided
so as to produce an energetic pressure on the shaft thereby rendering it and the
inner race or ring solidly united, so as to rotate together. A series of balls of
suitable dimensions are placed between the two cups for the purpose of facilitating
the rotation of the shaft and its bearings.
In the accompanying drawing:-
Figure 1 represents a front view of the bearing with half of it in section on the
line X-X (Figure 2).
Figure 2 is a cross section on the line Y-Y of Figure 1.
a is the casing of the bearings cone shaped in part, on the face of which is
secured a ring c by means of bolts thereby securing the ring d made in two
parts, for the purpose of introducing the balls, e, or only made in a single piece,
so as to form the race way interiorly at f. An inner ring g forming the race
way his bored conically and is placed over a sleeve or tube i split at j, also coni-
cally formed, and provided with a screw thread & for the nut 7.
m is the shaft to be supported by the bearing, over which the conical slit
sleeve is pressed. The sleeve enters the similarly cone-shaped opening of the
ring which becomes thus securely united with the shaft so as to turn with it.
The rolling is thus carried out on the balls e between the two race cups f and h.
This arrangement of parts offers great advantages and secures an appreciable
economy or saving in motive force, by avoiding a great amount of friction which
characterises ordinary bearings. The clamping device on the shaft consisting of
the split sleeve and nut assures an instantaneous securing and perfect centreing.
This device is also applicable to all kinds of mechanical rolling devices arranged
on shafts or the like, such as pulleys, gears and the like.
Having now particularly described and ascertained the nature of this said
invention, as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is :-
1. A ball bearing mounted on a conical sleeve for the purpose of instantaneous
securing and centreing characterised by a split sleeve adjusted and conically

page_text: shaped so as to be able to slide in the annular part forming the inner ball race,
under the action of a screw nut for the purpose of securely uniting the shaft and
the said sleeve, so as to provide for the rolling of a series of balls e contained
between the inner bearing and an outer cup or raceway arranged in the casing of
the bearing, substantially as described.
2. A ball bearing comprising a split conical tube as i, a corresponding ring,
as g, arranged therein, and a nut as 7, substantially as described.
3. The complete ball bearing substantially as described or illustrated in the
accompanying drawings.
Dated this fith day of November 1899
BOULT, WADE & KILBURN,
Agents for the Applicant.