IMPROVEMENTS IN BALL OR ROLLER BEARINGS FOR VELOCIPEDES.
Year: 1882

page_text: LETTERS PATENT to Adam Burdess, of Coventry, in the County of Warwick,
for an Invention of "IMPROVEMENTS IN BALL OR ROLLER BEARINGS FOR
VELOCIPEDES.'
"
PROVISIONAL SPECIFICATION left by the said Adam Burgess at the Office
of the Commissioners of Patents on the 11th February 1882.
ADAM BURDESS of Coventry in the County of Warwick "IMPROVEMENTS IN
BALL OR ROLLER BEARINGS FOR VELOCIPEDES."
This Invention relates to improvements in ball or roller bearings for velocipedes
and has for its object to lessen the friction of such bearings and to allow the axle
to run perfectly free, or nearly so.
To carry out my Invention I place within a suitable casing or frame two circular
series of balls or rollers; the first or inner series being placed immediately around
and in contact with the axle so that as the axle revolves in one direction a contrary
motion is imparted by it to such inner series of balls or rollers while each one of
the second or outer series is so placed that it comes partially between, and
consequently in contact with each pair of the balls or rollers constituting the inner
series, thus preventing them touching each other and obviating friction at the same
time that it keeps them in position.
The outer series of balls or rollers are kept in position by the inside of the casing
or frame against which they work and as the first or inner series revolve in ono
direction a contrary or reverse motion is imparted to such outer series thus causing
them to revolve in a corresponding direction with the axle.
By this improved construction and arrangement not only is the friction materially
lessened but the axle is allowed to run perfectly free or nearly so.
If found desirable the balls or rollers constituting the outer series may be inade
larger in circumforence than those constituting the inner series.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Adam Burgess in the Great Seal Patent Office on the 10th August
1882.
ADAM BURDESS of Coventry in the County of Warwick
BALL OR ROLLER BEARINGS FOR VELOCIPEDES.
IMPROVEMENTS IN
This Invention relates to improvements in ball or roller bearings for velocipedes
and has for its object to lessen the friction of such bearings and to allow the axle
to run perfectly free or nearly so.
To carry out my Invention I place within a suitable casing or frame two circular
series of balls or rollers, the first or inner series being placed immediately around
and in contact with the axle so that as the axle revolves in one direction a contrary
motion is imparted by it to such inner series of balls or rollers; while each one of
the second or outer series is so placed that it comes partially between, and conse-
quently in contact with each pair of the balls or rollers constituting the inner
series; thus preventing them touching each other and obviating friction, at the same
time that it keeps them in position.
The outer series of balls or rollers is kept in position by the inside of the casing
or frame against which they work, and as the first or inner series revolve in one
direction, a contrary or reverse motion is imparted to such outer series, thus causing
them to revolve in a corresponding direction with the axle.
By this improved construction and arrangement not only is the friction materially
lessened, but the axle is allowed to run perfectly free or nearly so.
If found desirable the balls or rollers constituting the outer series may be made
larger in circumference than those constituting the inner series.
My improved arrangement of ball or roller bearings is illustrated in the
accompanying Drawing.
Having thus particularly described and ascertained the nature of my said
Invention and the manner of carrying the same into operation I would have it
understood that what I claim and desire to secure by the hereinbefore in part
recited Letters Patent is.
The improved construction and arrangement of ball or roller bearings consisting
of two series of balls or rollers working between cach other substantially in the
manner and for the purposes hercin before described and illustrated.
In witness whereof I the said Adam Burdess have hereunto set my hand
and seal this Ninth day of August in the year of our Lord One thousand
eight hundred and eighty two.