Improvements in or relating to Ball or Roller Bearings.
Year: 1888

page_text: Date of Application, 5th Jan., 1888
Complete Specification Left, 5th Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in or relating to Ball or Roller Bearings.
I, HERBERT JOHN HADDAN, of the firm of Herbert & Co., Patent Agents, of
18 Buckingham Street, Strand, London in the County of Middlesex, Civil Engineer,
do hereby declare the nature of this invention, a communication to me from abroad
by Josef Hellmann and Carl Fichtl, both of Vienna, Austria, Manufacturers, to be as
follows:-
This invention relates to ball bearings and the like and consists in certain improve-
ments in the shape of the balls or rollers and of the bearing surfaces therefor―
Ellipsoid rollers or similar more or less oblate or elongated rotary bodies with rounded or
truncated ends are employed the same being suitably arranged in one or more series
between the stationary and moving parts-which latter are more or less shaped to the
contour or shape of the said balls or rollers.
HERBERT & Co.,
18, Buckingham Street, Strand,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Ball or Roller Bearings.
I HERBERT JOHN HADDAN of the firm of Herbert & Co., Patent Agents of
18 Buckingham Street, Strand, W.C. London in the County of Middlesex Civil
Engineer do hereby declare the nature of this invention, a communication to me from
abroad by Josef Hellmann and Carl Fichtl both of Vienna in the Empire of Austria
Manufacturers and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
This invention relates to ball bearings and the like.
In ball bearings used hitherto for diminishing or preventing friction between the
fixed or stationary and movable parts of machines (turning cranes, bridges,
turntables, wheel shafts &c.) the balls usually bear on a very small portion or width
of their circumference and become worn out in a very short time and must be
replaced:
The object of the present invention is to avoid this drawback and the improvements
consist essentially in employing ellipsoid rollers or similar more or less oblate rotary
bodies. with rounded or truncated ends which may be suitably arranged in one or more
series between the stationary and moving parts.
In the annexed drawing is shown the arrangement of such ellipsoid rollers with
truncated ends. in combination with an axle tree.
Fig. 1 represents the bearing and axle tree in longitudinal section, Fig. 2-is. a cross
section on the line a x of Fig. 1 and Fig. 3 shows the form of the ellipsoid roller in
longitudinal section on a larger scale.
The ellipsoid rollers a are laid in one, two or more series, two series being shown in
the drawings, round the suitably constructed axle tree beither with their larger
diameter parallel to the axle, or as represented in Fig. 1 more or less inclined with
regard to the same. The one series bears either (as shown in Fig. 1) against a hollow
conical shoulder on the axle trec itself or (in order to spare the axle tree and to
obtain a more durable bearing) the said series may bear against a chilled steel, ring
fastened or placed on the axle tree; the second series bears against a screwdown
collar c or against,a. chilled, ring e' constructed conically in conformity with the shape
of the ellipsoid rollers, and fastened to the axle tree.
Both series are enclosed in the axle box d which is provided with annular grooves,
(in conformity with the rollers) for the reception of the rollers.
In order to prevent the entering of dust &c. into the bearing, washers of felt,
rubber, etc. may be suitably arranged.
The parts of the bearing and of the axle tree against which the rollers bear are
formed in such a manner that they come into contact with the surface of the roller
along or partly along their whole length so that the rollers bear the strain uniformly
upon their whole surface.
Such ellipsoid roller bearings may be employed for vehicles of every kind, railway
and tramway cars, machines, shafting, turning cranes, turntables, in a different

page_text: way and even for axles at present in use without altering the axle box, they may be
also constructed in a different manner without departing from the nature of the
invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what
manner the same is to be performed I declare that what I
claim is,
1. An antifriction roller bearing composed of ellipsoid rollers or other similar
oblate rotary bodies which may have rounded or truncated ends, said rollers
arranged in one or more series in combination with suitable bearings thereof.
2. The combination of two series of rollers a as set forth with the inclined
bearings bc substantially as illustrated and described.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to Applicant.