Improvements in Concentric Bearings for Bicycles and other Machines.
Year: 1898

page_text: Date of Application, 15th Sept., 1898
Complete Specification Left, 17th Nov., 1898-Accepted, 17th Dec., 1898
PROVISIONAL SPECIFICATION.
Improvements in Concentric Bearings for Bicycles and other
Machines.
I, THOMAS KENYON, of 126, West View, Elswick, in the County of Northumber-
land, Engineer, do hereby declare the nature of this invention to be as follows:-
The nature of this invention consists of improvements in the bearings of
bicycles and other machines, in such a manner as to releive the bearing of the
spindle or axle, and the adjusting cup, from the heavy wear and tear which is
put upon the ordinary bearing when under heavy pressure.
I will explain this invention as adapted to the
bicycle.
bottom bracket" of a safety
This invention consists of two concentric rings of balls with a steel or other
suitable metal ring running loose between them, the said ring having a suitable
bearing surface on its inner diameter for the inner ring of balls, and one on its
outer diameter for the outer ring of balls, the inner ring of balls also bears upon
the spindle or axle bearing, and the outer ring of balls also bears upon the bear-
ing of the adjusting cup; the adjustment of both rings of balls being made by
moving the adjusting cup in the direction of the length of the spindle or axle.
The object of this invention is to releive the spindle or axle and the adjusting
cup bearings from the heavy wear and tear which is put upon the ordinary bear-
ing when under heavy pressure, and at the same time preserve a minimum of
frictional surface for quick running under light pressure, the bearings will thus
keep true and in good condition for a much longer period than is possible in the
ordinary bearing, and in the case of the bicycle will make it easier to propel
the machine up hill or against the wind.
1441 dave of September 1898.
THOMAS KENYON,
126, West View, Elswick, Newcastle-on-Tyne.
Applicant,
COMPLETE SPECIFICATION.
Improvements in Concentric Bearings for Bicycles and other
Machines.
I, THOMAS KENYON, of 126, West View, Elswick, in the County of Northumber-
land, Engineer, 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 nature of this invention consists of improvements in the bearings of
bicycles and other machines, in such a manner as to releive the spindle or

page_text: axle, and the cup, from the heavy wear and tear which is put upon them in the
ordinary bearing, when under heavy pressure.
"
bottom bracket" of a safety
the
I will explain this invention as adapted to the
bicycle.
This invention consists of two concentric rings of balls with a steel or other
suitable metal ring free to run loose between them, the said ring having a suitable
bearing surface on its inner diameter for the inner ring of balls, and a
suitable bearing surface on its outer diameter for the outer ring of balls;
inner ring of balls, also bear upon the spindle or axle bearing, or on the cone,
which may be screwed or otherwise attached to the spindle or axle; the outer
ring of balls also bear upon the bearing of the outer cup, the said cup may be
screwed or otherwise attached to the bracket; the adjustment of both rings of
balls being made, by moving the adjusting cup or the adjusting cone, in the
direction of the length of the spindle or axle.
The object of this invention is to releive the spindle or axle, or the adjusting
cone, and the adjusting cup bearings, from the heavy wear and tear, which is
put upon them in the ordinary bearing, when under heavy pressure, and at the
same time preserve a minimum of frictional surface, for runing under lighter
pressure; the bearings will thus keep true, and in good condition, for a much
longer period, than is possible in the ordinary bearing, and in the case of the
bicycle, will make it much easier to propel the machine, up hill or against the
wind.
I have appended one sheet of drawings, which illustrates the manner in which
my invention is suitable, for application to the "bottom bracket" of a safety
bicycle.
On Sheet 1
bottom bracket "
Fig. 1 is shown a longitudinal section, through the
B, of
a safety bicycle," in which the adjustment of the bearings is made by screwing
the adjusting cup C, in the direction of the length of the spindle or axle A.
Fig. 2 is shewn a cross section through one of the bearings of the
bracket" shewn in Fig. 1.
64
"
bottom
Fig. 3 is shewn a longitudinal section through the "bottom bracket" B, of a
safety bicycle," in which the adjustment of the bearings is made, by screwing
the adjusting cone J in the direction of the length of the spindle or axle A.
Fig. 4 is shewn a cross section through one of the bearings of the bottom
bracket, shewn in Fig. 3.
Refering to Sheet 1. Figs. 1, 2, 3 & 4. The two concentric rings of balls D
and E, have the ring R, free to run loose between them, the ring R, has a suitable
bearing surface F, on its inner diameter, for the inner ring of balls D, and a
suitable bearing surface G, on its outer diameter, for the outer ring of balls E, 4
the inner ring of balls D), also bear upon the bearing H, of the
spindle, or axle A, Fig. 1; or upon the bearing K, of the cone J,
which is screwed to the spindle, or axle A, Fig. 3, the outer ring
of balls also bear upon the bearing I, of the outer cup C, which may
be fixed to the bracket B, as in Fig. 3; or it may be screwed on its outer 4
diameter, as in Fig. 1; the adjustment of both rings of balls D, and E, being
made by moving the adjusting cup C, when screwed as in Fig. 1; or the adjust-
ing cone J, as in Fig. 3; in the direction of the length of the spindle or axle A.
The spindle or axle, the cone, and the adjusting cup bearings H, K and I, in the
ordinary bearing are subjected to heavy wear and tear, when under heavy pres- 5
sure, on account of their diameter being small in comparison, with the heavy
pressure at times put upon the spindle, or axle A.
In my invention when the pressure put upon the spindle or axle A, is too great
for the small diameter of the inner ring of balls D, and the bearing sur-
faces H, K, and I; the inner ring of balls 1), under pressure of the spindle, or
axle A, will drag the ring R, round with them, the wear and tear, will then be
taken, by the outer ring of balls E, and the bearing surfaces G, and I, which

page_text: are so much larger in diameter, that they can take the heaviest pressures, and
run freely with comparatively very little wear and tear.
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:-
The loose ring having a bearing on its inner diameter, and a bearing on its
outer diameter, in combination with the concentric rings of balls, as set forth
in my specification and shewn in my drawings.
Dated this 16th day of November 1898
THOMAS KENYON,
Applicant.