Year: 1896

page_text: We, JOHN STEWART MACARTHUR, of the Firm of Blacklock & Macarthur, Paint,
Colour and Varnish Manufacturers, West Street, Tradeston, in the City of Glasgow,
and WILLIAM CARSON, of 3 Park Terrace, Govan, in the County of Lanark, Naval
Architect, do hereby declare he nature of this Invention to be as follows:-
This invention relates to ball bearings such as are used in the hubs and other
parts of cycles and for like purposes; and it has for its object to further reduce
friction in such bearings.
In these bearings the balls provided are ordinarily of one size for each bearing
and the several balls roll not only on the bearing surfaces of the ball race but
in fractional contact with each other thus occasioning undue friction.
Under our Invention we employ balls of two sizes for each bearing and arrange
them so that the smaller balls alternate with those of the larger size, which later
support the weight of the bearing, being of diameter suitable for the ball race.
The smaller balls thus merely serve as rollers or idlers between the larger balls
in contact with the race and ensure the free rotation of all the balls.
Dated this 6th day of October 1896.
WALLACE FAIRWEATHER,
Chartered Patent Agents,
Of the Firm of Cruikshank & Fairweather,
62 Saint Vincent Street, Glasgow, Agent for the Applicants.
We, JOHN STEWART MACARTHUR, of the Firm of Blacklock & Macarthur, Paint,
Colour and Varnish Manufacturers, West Street, Tradeston, in the City of Glasgow,
and WILLIAM CARSON, of 3 Park Terrace, Govan, in the County of Lanark, Naval
Architect, do hereby declare the nature of this invention and in what manner the
same to be performed, to be particularly described and ascertained in and by the
following statement:--
This invention relates to ball bearings such as are used in the hubs and other
parts of cycles and for like purposes; and it has for its object to further reduce
friction in such bearings.
The Invention is illustrated by the accompanying drawings, Figure 1 being a
sectional elevation of a wheel hub lengthwise of the axle, and Figure 2 a transverse
section of the same, on the line -. Figure 1.

page_text: In cycle and other bearings the balls provided are ordinarily of one size for
each bearing and the several balls roll not only on the bearing surfaces of the ball
race but in frictional contact with each other thus occasioning undue friction.
Under out Invention we employ balls A, B, of two sizes for each bearing C and
arrange them so that the smaller balls B alternate, with those A of the larger size,
which latter support the weight of the bearing C, being of diameter suitable for
the ball race D. The smaler balls B thus merely serve as rollers or idlers between
the larger balls A in contact with the race D and ensure the free rotation of all
the balls.
Having now particularly described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:-
In ball bearings for cycles and the like the provision of balls of two sizes for each
bearing so arranged that the smaller balls alternate with those of the larger size
substantially as described.
WALLACE FAIRWEATHER,
Chartered Patent Agents,
Of the Firm of Cruikshank & Fairweather,
62 Saint Vincent Street, Glasgow, Agent for the Applicants