Year: 1898

page_text: I, GEORGE FREDERICK CADDEN, 36, Adelaide Street, Coventry, Fitter, do hereby
declare the nature of this invention to be as follows:-
This invention consists of improvements in or relating to brakes for velocipedes
and the like, the object being to provide a brake which may be readily applied
to the wheel of a machine and which will not be disengaged from contact with the
wheel until the rider so desires.
In carrying out my invention I provide a screw spindle which passes through
at or about the centre of the handle bar into the forked tube. This screw spindle
may be of any suitable section, and is rotated through the medium of a thumb
piece, milled head, or suchlike. The brake surface is carried on a sliding sleeve
or the like which is operated by the screw spindle aforesaid so as to cause the
brake surface to be applied to or removed from the wheel. The connections of
the brake surface to the sliding sleeve may be made through the medium of ball
bearings suitably arranged. Suitable means are provided for preventing the
screw spindle rotating through the vibration of the machine, such as a spring
catch or clip or other well-known and convenient arrangement. I find it con-
venient to employ sufficient friction upon the sliding sleeve carrying the brake
surface in order to prevent this rotation of the spindle by rotation, but of course
it will be readily understood that there are many ways in which this object may be
attained, namely, the prevention of rotation through vibration of the screw
spindle, which would tend to remove the brake surface from the wheel.
One of the advantages of this brake consists in the fact that in the event of
the tyre being deflated the brake surface may be applied to the rim of the wheel,
and in many brakes this is impossible owing to the limited amount of play or
movement of which the brake surface is capable.

page_text: be performed, to be particularly described and ascertained in and by the following
statement-
This invention consists of improvements in or relating to brakes for velocipedes
and the like, the object being to provide a brake which may be readily applied
to the wheel of a machine and which will not be disengaged from contact with
the wheel until the rider so desires.
In carrying out my invention I provide a screw spindle which passes through
at or about the centre of the handle bar into the forked tube. This screw spindle
may be of any suitable section, and is rotated through the medium of a thumb
piece, milled or such like. The brake surface is carried on a sliding sleeve or
the like which is operated by the screw spindle aforesaid so as to cause the brake
surface to be applied to or removed from the wheel. The connections of the
brake surface to the sliding sleeve may be made through the medium of ball
bearings suitably arranged. Suitable means are provided for preventing the
screw spindle rotating through the vibration of the machine, such as a spring
catch or clip or other well known, and convenient arrangement. I find it con-
venient to employ sufficient friction upon the sliding sleeve carrying the brake
in order to prevent this rotation of the spindle by vibration, but of course it will
be readily understood that there are many ways in which this object may be
attained, namely the prevention of rotation through vibration of the screw spindle
which would tend to remove the brake surface from the wheel.
One of the advantages of this brake consists in the fact that in the event of
the tyre being deflated the brake surface may be applied to the rim of the wheel,
and in many brakes this is impossible owing to the limited amount of play or
movement of which the brake surface is capable.
For purposes of illustration I will now refer to the annexed drawings in
which:-
Figure 1 is a sectional side elevation of my invention.
t is the handle bar in which the rod e passes e and e¹ being sockets or sleeves,
the socket el is cut or slotted & formed of a suitable material such as spring
steel for the purpose of gripping the rod c which is secured by means of the
screw thread, and nut a to the thumb piece b. This rod c is provided with a
key or such convenient means d and engages in the tube f the key being for the
purpose of enabling the tube f to be rotated, and at the same time allow it to
slide upon the rod c. This tube f carries a screw spindle
which engages in
the nut which is attached to the sleeve r secured in the tube k. This spindle is
provided with the race in which the balls run 2 being cups or cones attached
to the sliding piece m in any convenient manner. The sliding piece m carries
the brake surface o through the medium of balls n secured in suitable recesses,
being the ordinary forks. It will be seen, that by rotating the thumb piece
the screw spindle h will be caused to descend or ascend through the nut i thus
raising or lowering the brake surface o. The tube or sleeve r may be so arranged
by being made of elastic material, and slotted so as to grip the sliding piece m
and so prevent vibration, causing the brake to become inoperative when applied
to the wheel.
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:
1. In brakes of the class herein described the combined construction and
arrangement of the various parts substantially as described, and illustrated herein
and for the purpose set forth.
2. In brakes of the class herein described a brake surface, antifrictionally
mounted upon a sliding piece, which is in turn anti-frictionally connected to a
screw spindle which passes through a fixed nut; said screw spindle being operated
through the medium of a rod engaging in a hollow tube or bar of such spindle
and having a key; the said rod passing through the handle bars of the machine,

page_text: and terminating in a thumb piece attached thereto in any convenient manner,
said sliding piece which carries the brake surface screw spindle and rod for
operating same passing through being carried in the forked tube substantially
as described, and illustrated herein, and for the purpose set forth.
D
1111
Թ
1000