Year: 1898

page_text: Date of Application, 1st Jan., 1898
Complete Specification Left, 1st Oct., 1898-Accepted, 5th Nov., 1898
I, SIDNEY REID, of Akenside Hill, Newcastle-upon-Tyne, Printer and Stationer,
do hereby declare the nature of this invention to be as follows:-
In the ordinary form of bicycle brake the friction used to retard the motion
of the wheel is produced by the direct contact of a fixed piece of mechanism with
the rim of the wheel; and both this piece of mechanism and the part of the
wheel with which it is brought in contact are more or less worn by the friction.
Now I by my invention substitute for the fixed piece of mechanism before re-
ferred to an arrangement of two revolving cones, or, cylinders set at an angle,
so as to embrace the sides of the tire of the wheel. These cones revolve upon
fixed spindles and may be made (within wide limits to almost any desired extent)
to distribute the friction, so as wholly or in a large degree to take off the abrading
friction from the tire of the wheel. The brake action is produced by com-
pression of and consequent drag upon the tire but not to such an extent as if
the cones could not revolve; and also (by preference) by compression of the cones,
which for this purpose I construct of india rubber or some other suitable elastic
material. To prevent concentration of the abrading friction on the spindles
carrying the cones, may bush the cones and occasionally oil them.
Dated this 31st day of December 1897
J. JAMESON,
Newcastle-on-Tyne, Agent for Applicant.
I, SIDNEY REID, of Akenside Hill, Newcastle-upon-Tyne, Printer and Stationer,
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:-
-
In the ordinary form of bicycle brake the friction used to retard the motion
of the wheel is produced by the direct contact of a fixed piece of mechanism with
the rim or tire of the wheel; and both this piece of mechanism and the part of the
wheel with which it is brought in contact are more or less worn by the friction.
Now I by my invention substitute for the fixed piece of mechanism before re-
ferred to an arrangement of two revolving cones, or cylinders set at an angle,
so as to embrace the sides of the tire of the wheel. These cones revolve upon
fixed spindles and may be made (within wide limits to almost any desired extent)

page_text: to distribute the friction, so as wholly or in a large degree to take off the abrading
friction from the tire of the wheel. The brake action is produced by com-
pression of and consequent drag upon the tire but not to such an extent as if
the cones could not revolve; and also (by preference) by compression of the cones,
which for this purpose I construct of india rubber or some other suitable elastic
material. To prevent concentration of the abrading friction in the spindles
carrying the cones. I may bush the cones and occasionally oil them.
In the drawing hereto attached Fig. 1 represents the rim or tire of a bicycle
wheel with an ordinary form of brake applied to the same. I omit for clearness
the inner tube and shew only B the covering of the same, and C the fixed piece
of mechanism which is brought into contact with this outer covering when the
brake is applied. It will be seen that the friction of the ordinary brake is exactly
on that part of the tire of the wheel which is most exposed to wear by contact
with the road and the tendency of this friction is to increase such wear, and
especially after the outer case of the tube has become roughened or uneven. I
sintend this drawing Fig. 1 merely to illustrate the improvement effected by
my invention.
Fig. 2 is an illustration of my invention in which as in Fig. 1 B represents the
outer covering of the rim or tire and C the piece of mechanism in accordance
with my invention.
When by the movement of the brake lever the brake is brought into contact
with the rim or tire of the wheel, it will be observed that it bears, not upon that
part of the case of the tire which is brought most directly into contact with the
road (which might be called the head of the tire) but, against the upper sides
or what might be called the shoulders of the tire, which I consider an advantage
in itself. This however is not the only nor perhaps the main point of my inven-
tion; the parts CC Fig. 2 are free to revolve upon the centres to which they
are attached. This is illustrated in Fig 3 which is a section of C Fig. 2 where-
in II represents india rubber or other convenient material passed onto the
spindle J and free to revolve on that spindle. II is secured in its position by
the nut K. The spindle J is securely attached to its support by the nut L.
The india rubber or other material II may be bushed or not; I prefer to
bush it with brass and to supply it with oil because with a good leverage on the
brake handle I find that a very powerful brake is constituted, but all such minor
matters are not essential features of my invention.
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 use of revolving cones, or, of revolving cylinders set at an angle, applied
as bicycle brakes as and for the purpose substantially described.
DateL
UITIS LIII CICCI
uay
TO
Бергентост 1030
J. JAMESON,
Akenside Hill, Newcastle-on-Tyne,
Agent for Applicant.