provements in Mechanism for Applying Brake Power to Velocipedes or Cycles.
Year: 1895

page_text: Date of Application, 11th Nov., 1895
Complete Specification Left, 8th Sept., 1896-Accepted, 10th Oct., 1896
TRUVIDIONAL OF MULT LUATION
Improvements in Mechanism for Applying Brake Power to
Velocipedes or Cycles.
I, WILLIAM EDWARD WALMSLEY of 8 Hyde Rond Waterloo, in the 'County
of Lancaster, Manager, do hereby declare the nature of this invention to be as
follows:
Improvements in mechanism for applying brake power to velocipedes or oycles,
by means of which, an ordinary band brake, fitted to the rear wheel or wheels of
the cycle is actuated, by the rider pressing the pedals in a backward direction, and
is carried out in the following manner. The chain-wheel and the orank axle, are
mounted on ball bearings independently of each other and inside the chain-wheel
are pivotted, two or more pawls, which are engaged, when in gear for ordinary use,
by a projection on the inner side of the crank, about an inch from the centre of the
spindle.
The pawl or pawls, used in forward pedalling, are always in gear, but those used
in, what is known to cyclists, as back-pedalling, can be put in or out of gear at the
will of the rider, by means of suitable mechanism actuated by a small lever fixed
near the handle-bar of the cycle.
On the side opposite to the chain-wheel, a.brake lever is fitted at the end of the
bottom bracket, concentric with the spindle, and on this lever is pivotted a pawl,
which is engaged, when the pedals are pressed in a backward direction, by a similar
projection on the inner side of the crank, and this pawl.cau also be put in or out of
gear by the aforesaid small lever fixed near the handle-bar.
The end of this brake lever is connected with one end of the band of the brake,
the drum of which is fixed to the rear wheel or wheels of the cycle, concentric with
the axle.
}
The action of the mechanism may be described as follows-When the back-
pedalling pawlor pawls on the chain-wheel are in gear, the pawl on the brake
lever will be out of gear and vice versa, therefore, when the brake lever is out of
gear the cycle can be used in the same way as a brakeless cycle, but when the
brake-lever is put into gear by the aforesaid small lever, fixed near the handle-bar,
it, at the same time puts out of gear the back-pedalling pawl or pawls on the chain-
wheel, and this action, allows the cycle to run freely, whilst the pedals can
remain at rest, so that the rider may then press the pedals in a backward direction
and thus engage the pawl on the 'brake lever and thereby actuate the brake
at will.
Dated this Ninth day of November 1896

page_text: Improvements in Mechanism for Applying Brake Power to
Velocipedes or Cycles.
I WILLIAM EDWARD WALMSLEY of 8 Hyde Road Waterloo in the County
of Lancaster 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 :-
to
My invention relates to improvements in mechanism for applying brake power
velocipedes or cycles by means of which, an ordinary band brake fitted to the
rear wheel or wheels of the cycle is actuated by the rider pressing the pedals in
a backward direction and in order that the invention may be clearly understood,
the following description with the accompanying drawings will be all that is
necessary.
The letters on the drawings, correspond with the parts in all the figures.
Fig. is a front elevation showing the crank bracket of an ordinary cycle with
the brake mechanism fixed in position and with the rim of the chain wheel shown
broken away, the brake power being out of gear.
Fig. 2 is a sectional plan of Fig. 1.
Fig. 3 shows an end view of Fig. 1 with the rim of the chain wheel in section.
Fig. 4 is a view of the cam levers closed.
Fig. 5 is a similar view to Fig. 1, but, showing the cam levers closed, as in Fig. 4
and the brake power gear.
A is the crank axle, B the brake lever, C the chain wheel, these all run
independently of each other on the ball bearings as shown in Fig. 2. D and E
are discs of metal connected together by four arms or bridges E³, E', Eª and E‘
and form a kind of shell round the chain wheel C, this shell is fixed to the crank
bracket by the flange of the fixed cone F, G is the loose cone by which the balls in
the bearings are adjusted, H is a lever pivotted at both sides of the shell at the
points Hand H³, J, J and J2 are three cam levers pivotted to the shell at the
points H, H³, and H. K is a spindle fixed at one end to the lever Hat H¹
and supported by the small bracket K and at the other ond of this spindle is.
fixed a lever L having two flat springs L' and L' attached to it. M is a pawl
pivotted to the arm of the chain wheel Cat the point M, N is a double
ended pawl pirotted to the arm of the chain wheel C at the point N¹. O is
a double ended pawl pivotted to the brake lever B at the point O having a
pin O fixed into one end of it, P is one end of a connecting rod pivotted
to the brake lever B at the point P¹, the other end of this connecting
rod is fastened to one end of the band brake fixed to the rear wheel or
axle of the cycle, Ais a collar screwed tight on the crank axle A, A' and A'
are the crauks fixed to the crank axle A and have projections at A and A'. R is
a rod pivotted to the lever H at the point R, the other end of this rod R is
fastened near the landle bar of the cycle within easy reach of the rider, S.is a
flat spring fixed to the arm of the chain wheel C at the point S' and the ends of
this spring press against the pawls M and N, which has a tendency to keep these
pawls in the position as shown in Fig. 1. The action of the brake mechanism is
as follows-When the rod R is in the position as shown in Fig. 1, the cam
levers J, J and J' are open, and the pawls M and N are pressed against the boss
or hub of the chain-wheel C by the flat spring S, and the pawl is held clear of
the projection A on the crank A³ by the flat spring L³ on the lever L pressing
against the pin O, and the projection A on the crank A is engaged by the two
pawls M and N, and the projection A' on the crank A' is just clear of the pawl O.
therefore, in this position, it is obvious, that the brake mechanism is out of gear,

page_text: and the cycle can be used as an ordinary brakeless machine, but, when the rider
lifts the rod R into the position as shown in Fig. 5 the cam levers J. J¹ and ♫*
close upon the end of the pawl N by means of the small pins attached to the ends
of each, moving along the curved slots shown particularly in Fig. 4, this action
lifts the other end of the pawl N clear of the projection A on the crank A' and
also through the spindle K, causes the pawl O to be engaged by the projection A*-
on the crank A' by the flat spring L' on the lever L pressing against the pin O'.
It will now be seen that in this position the chain wheel C is at liberty to run
in a forward direction whilst the cranks A and AB with their projections A and A,
may remain stationary, the pawl M leaping over the projection A' on the crank A¹
at each revolution, and the rider may now press the cranks in a backward direction
and apply
as much brake power as is necessary, by the projection A' on the
crank A engaging the pawl O on the brake lever B as shown in Fig. 5, the band
brake on the machine being connected to the brake lever B by the rod P.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.-
The combination of the mechanism, including the loose chain-wheel, with its.
pawls, the brake lever and pawl, the projections of the cranks and the cam levers,.
for the purposes substantially, as herein described and set forth.
Dated thin 7th of September 1896.
W. E. WALMSLEY.