Year: 1897

page_text: We, GOODMAN CHARLES MANDLEBERG, of Carlton House, Broughton Park, Man-
chester, in the County of Lancaster, and JOHN JAMES YOUNG, of 104, Bolton Road,
Pendleton, in the aforesaid County, Manager, do hereby declare the nature of the
said invention to be as follows:--
"
1. Our invention relates to an improved combination of mechanism for braking..
or resisting the rotation.
velocipedes, the brake being applied by "back pedalling
of the pedal cranks and thus of the crank pedal shaft, and being withdrawn when,
the crank pedals are worked in the forward direction, the force of the braking action
varying with the amount of resistance in "back pedalling." We carry out our inven-
tion by securing a disc plate faced with leather or similar. suitable material to the
frame of the velocipede, this disc being stationary and concentric with, the crank
pedal shaft and the plane or face of it is at a right angle to the axis of the pedal
shaft. The chain wheel is not keyed or secured on the pedal shaft but is so mounted.
on one of the pedal cranks or its boss that it can rotate or oscillate in the direction*
of rotation to a limited extent, and at the same time move laterally, that is in the
direction of the line of the crank axle.
This mounting of the chain wheel as above described is by screw inclines or sections
or segments of screw inclines, that screw incline which would correspond to the
internal screw thread is formed on the side of the disc of the chain wheel, while
the external thread is formed on the boss or arms on the pedal crank or these
internal and external threads may be reversed that is, the internal may take the
place of the external thread. Thus arranged if the chain wheel is held fast and
the crank pedal is partly rotated backward, the disc side of the chain wheel nearest the
said stationary disc is screwed or forced against it, and it then acts as a brake, but
when the crank pedal is propelled forward, the chain wheel is screwed or forced.
away from the stationary disc brake surface.
In use, the chain wheel is not held from rotating as it is only necessary to retard.
its rotation, or to act to propel it to produce the application and withdrawal of the
chain wheel from the fixed brake disc surface as above explained.
thof March 1807

page_text: Improvements in or applicable to Velocipedes.
We, GOODMAN CHARLES MANDLEBERG, of Carlton House, Broughton Park,
Manchester, in the County of Lancaster, and JoHN JAMES YOUNG, late of 104, Bolton
Road, Pendleton, in the aforesaid County, now residing at Fern Lea, Genesta Road,
Plumstead, in the County of Kent, late Manager, 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 :-
Our invention relates to an improved combination of mechanism for braking
velocipedes, the brake being applied by "back pedalling" or resisting the rotation of
the pedal cranks and thus of the crank pedal shaft, and being withdrawn when the
crank pedals are worked in the forward direction, the force of the braking action
varying with the amount of resistance in "back pedalling." We carry out our
invention by securing a disc plate faced with leather or similar suitable material to
the frame of the velocipede, this disc being stationary and concentric with the crank
pedal shaft and the plane or face of it is at a right angle to the axis of the pedal shaft.
The chain wheel is not keyed or secured on the pedal shaft but is so mounted on
one of the pedal cranks on its boss that it can rotate or oscillate in the direction of
rotation to a limited extent, and at the same time move laterally, that is in the
-direction of the line of the crank axle.
This mounting of the chain wheel as above described is by screw inclines or
sections or segments of screw inclines, that screw incline which would correspond to
the internal screw thread is formed on the side of the disc of the chain wheel, while
the external thread is formed on the boss or arms on the pedal crank or these
internal and external threads may be reversed, that is, the internal may take the
place of the external thread.
Thus arranged if the chain wheel is held fast and the crank pedal is partly rotated
backward, the disc side of the chain wheel nearest the said stationary disc is screwed
or forced against it, and it then acts as a brake, but when the crank pedal is propelled
forward, the chain wheel is screwed or forced away from the stationary disc brake
surface.
:
In use the chain wheel is not held from rotating as it is only necessary to retard
its rotation, or to act to propel it to produce the application and withdrawal of the
chain wheel from the fixed brake disc surface as above explained.
Fig. 1 is a side elevation of so much of a Bicycle and its framing round the pedal
axle as will be necessary to explain our invention.
Fig. 2, is a plan of the parts or some of them shown in Fig. I, the fixed disc, chain
wheel and part of the pedal levers or cranks being shown in section.
Fig. 3, is a detached view in the plane of Fig. 2, of a part of the framing connected
with the boss of the framing in which the bearings of the pedal shaft are carried,
also showing the brake disc secured thereto in section.
Fig. 4, is a front, and.
Fig. 5, a face view of the fixed brake disc detached.
Fig. 6, is an edge sectional view detached of the chain wheel, and
Fig. 7, is an outside face view of the same showing the segments of screw inclines
thereon.
Fig. 8, is an edge view, and
Fig. 9, a front or outside face view of one of the pedal arms near its boss, shown
detached with the three screw inclines or segments thereon.
a, is part of the tube framing going upwards to join the framing near the saddle;

page_text: a, part of the tube framing going to that part of the framing forming the socket or
bearing for the axis to which the handle bars are secured and upon which the
steering wheel swivels.
:
a², is part of one tube of the. framing on one side of the driving wheel, and a³, is
the part of the tube on the other side of the .driving wheel, these frame.
tubes a² and a³, going to the axis of the driving wheel. The tubes a, a', a² and a³,
join the boss a', of the framing, in which the pedal shaft has its bearings
"One of the tubes a², is cranked as shown best in Fig. 2, in order to get the mechanism
in as little space as possible, and is strengthened by a cross tube a³.
b, is the pedal shaft in bearings in the boss at, upon one end of which one pedal
lever b', is secured in the usual manner, the boss of the other pedal lever 62, is also
secured to the other end of the shaft b, in the usual manner, that is, by a key b³,
with a screw nut b', on one end (see Figs. 1 and 2). The boss of this pedal lever 62,
has a dished disc 65, formed upon it, the dished or concave part going over the end
of the boss a', of the framing as shown best in Fig. 2.
The fixed brake disc c, is formed with a boss c¹, having a notch c², cut out on one
side to admit the tube frame a², when the disc is placed in position, and it is secured
to the boss at, by a screw c³, which screws through the boss c¹, the inner end of the
screw entering a hole or hollow in the boss of the frame a', (see Figs. 2 and 3).
The metal disc c, is faced with leather c', secured to the metal disc by rivets c'.
The chain wheel d, is dished on one side and fits close to the disc c, when
acting to brake. The wheel d, has a short boss d¹, that fits upon the disc part 6³, of
the pedal arm 62, and the face of the outside of the wheel is made with three or more
internal segmental inclines d², which fit corresponding inclines, one 60, formed on the
pedal lever 62, the other two 6', on each of the two short arms from the boss part of
the lever 6.
These inclines 6 and 6', on the pedal lever 62, are bevelled on their outer edges 68,
and are screw inclined on their inner faces to fit corresponding internal inclines
and under cut recesses d³, in the internal inclined segments d², on the chain
wheel.
When the pedal lever 62, is brought with its disc part 65, to fit into the hole in the
boss d', of the chain wheel and is then partly rotated, the inclines 6° and 6', on the
arm be, and its short arm fit and enter the internal inclines d², on the chain wheel,
and when thus placed in position a pin 4, (see Figs. 1 and 7) is screwed into the face
of the chain wheel and stands out from its side which prevents the pedal lever being
turned so far back in relation to the wheel as to allow the inclines on the pedal lever
to leave the sunk inclines on the face of the wheel.
A piece of leather or other suitable material 69, is or may be secured on the forward
driving ends of each of the inclines on the pedal lever to prevent noise and shock
when they come against the ends of the inclines d², on the chain wheel.
In Fig. 1, the forward or driving ends of the inclines 6º, on the pedal lever are
shown against the end of each of the internal incline segments d², on the chain
wheel in which position the wheel d, is drawn towards the boss of the pedal lever b²,
by the inclined bevelled edges 68, on the arms of the pedal lever which act on the
undercut parts d³, of the incline segments on the chain wheel, and then the wheel is
away from and clear of the leather face c', of the disc c, but when the rotation of
the pedals is resisted as when "back pedalling," then the inclines on the pedal lever
nove backwards from the position in which they are shown in Fig. 1, and the screw
inclined faces 67, on the arms of the pedal lever b³, then force the inside disc of the
wheel d, against the face c', of the leather on the disc as shown in Fig. 2, and this
breaks or retards the motion of the pedal shaft b, and wheel il, and the driving wheel
through the chain.
If desired there may be a fixed brake disc c, on the opposite end of the pedal shaft
and a disc same as the chain wheel d, but without teeth, and a pedal lever 6², same
as that on the other end of the shaft so that a brake may be applied at both ends of
the pedal shaft b, and by both pedal levers b¹ and 6, at the same time.

page_text: 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 :-
1. The combination of mechanism substantially as and for the purpose hereinbefore
described and illustrated by the drawings..
2. The combination of a brake disc secured to the framing with a chain wheel and
pedal lever substantially as and for the purpose hereinbefore described and illustrated
by the drawings.