Year: 1898

page_text: Date of Application, 10th Sept., 1898-Accepted, 26th Nov., 1898
The Repton
петеру
and in what manner the saine is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to hand driving mechanism for velocipedes particularly
adapted to rear driving machines of the kind described in prior Patents No. 9229
and 10566 of 1897.
'
By means of the device forming the subject of this invention the hand mechanism
may be released and the handle bar fixed at the pleasure of the rider, whilst in the
saddle and travelling at full speed.
My improvements are represented in detail in the accompanying drawing, in
which:
Figure 1 shews the engaging device as a whole.
Figure 2 is a plan view of the lever for operating the engaging rod.
Figure 3 is a side elevation of the support for the operating lever.
Figure 4 is a section taken upon the line x-y of Figure 1.
Figures 5 and 6 illustrate in longitudinal section and in elevation respectively, the
engaging mechanism in the position in which the band gear is coupled with the
ordinary driving gear of the cycle.
Figures 7 and 8 represent the same mechanism in the position in which the hand
gear is disengaged.
Figure 9 shews a form of crank axle, with engaging key, and
Figure 10 shews another form of such axle, without engaging key.
As shewn in Figures 5, 6, 7 and 8 the coupling mechanisin is completely lodged
within the crank axle bearing a, and consists essentially of the chain wheel e adapted
to be connected by a chain to a wheel on the pedal crank axle said wheel e rotating
upon the crank-axle b and which is provided with the screw cone c, the toothed
socket d, the toothed socket f and the spring g.
In order that it may receive the chain wheel e, which turns freely upon the
axle b when the hand gear is uncoupled, the said axle is turned in such a manner
that the hub el of the chain wheel is guided by the central reinforced portion of
the axle b, whilst on the other haud its cone c turns upon the balls of the left-
hand bearing h.
The cone c and the socket dare screwed upon the hub of the chain wheel e, upon
which the socket d is also fixed by means of a set screw d¹³.
The socket fits against the socket which is thus fixed upon the chain
wheel hub.
This socket is arranged upon the shaft 6 in such a manner as to be capable
of axial displacement, so that the key i arranged upon the shaft b (Figures 5
and 6) engages in the mortice of the socket and causes the socket to rotate with
the axle b.

page_text: The engagement of the toothed socket f with the teeth of the socket d is effected
by means of the spring g which bears with one end upon the collar of the axle b,
and with the other upon the socket f.
In order to be able to disengage the hand gear, that is to say to disengage the
toothed sockets d and f, this latter socket f is provided with a base f¹, which upon
the side adjacent to the socket d is provided with an inclined plane the inclination of
which is such that the disengaging rod l, on coming into contact with it, effects the
disengagement of the sockets & and f (Figures 7 and 8) by means of a half revolution
of the axle b.
In order to fix the handle bar after the disengagement of the sockets d and f, the
socket is provided, at the largest part of the collar f¹, with a hole m in which
enters the disengaging rod which is guided in a socket arranged upon the
bearing a.
Figures 1, 2 3 and 4 shew the device intended for operating the disengaging rod
either for raising it in order to engage the hand gear, or for lowering it in order to
effect disengagement and to fix the handle bar.
The disengaging rod is jointed at its upper portion to a lever p q pivoted at ŕ to
a support s s¹ fixed upon the frame of the cycle. A metal wire spring t tends to
maintain the extremity q of the lever in a raised position, and consequently tends
to disengage the hand gear. In order to effect engagement it is only necessary to
bear upon this lever at q so as to raise the rod ; the lever is held in this position by
means of a bolt consisting of a pin pressed by a spring arranged within the knob v;
this pin engaging in the aperture z of the lever q When it is desired to effect
disengagement, it is only necessary to release the pin u by acting upon the knob v,
and the lever p q is caused to resume the disengaged position by the action of the
spring t, thereby causing the rod to descend; the handle bar is fixed at the same
time owing to the locking of the axle b which renders the cranks o and the connecting
rods transmitting motion to the said handle bar immovable.
The device described above thus permits of disengaging the hand gear at any
moment whilst travelling, to fix the handle bar and to again engage it with the same
ease, at the will of the rider.
I reserve the right to modify the form, dimensions and relative proportions of the
parts constituting the device above described, in accordance with special constructional
requirements. For example, I may substitute for the axle b of circular section and
provided with an engaging key i as indicated in Figure 9, an axle 2 (Figure 10) of
polygonal section, in combination with a socket provided with an aperture of the
same form, for the purpose of dispensing with the key and of obtaining an engaging
device of greater strength.
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 a cycle driven by hand and by foot, the device for disengaging the hand gear
characterised by the fact that the crank shaft b driven by hand and mounted in the
bearing a, is provided with a toothed socket f by means of which a chain wheel e,
which rotates freely upon the axle band which is likewise provided with a toothed
socket & fixed upon the hub e', is engaged or disengaged, the necessary displacement
being effected by means of a rod which is guided in the bearing a and which, when
the axle rotates, bears against an inclined plane of the socket f, releases this
latter and after such disengagement is effected falls into a hole m in the socket, thus
rigidly connecting the axle b and the handle bar.
2. In the device described in Claim 1, the employment of a spring g arranged
between the base band the socket f and which serves to reengage the sockets f
and d after the rod has been released, in such a manner as to rigidly connect the
chain wheel e with the crank axle b.
3. In the device characterised in Claim 1, the combination with the disengaging
rod of a lever pivoted upon a support fixed to the frame of the cycle and acted upon

page_text: by a spring tending to cause the rod to descend to its disengaged position, this lever
being adapted to be locked in its engaged position by means of a bolt arranged upon
the support fixed to the frame of the cycle.
Dated this 10th day of Senterber 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.