Improvements in the Crank Driving Mechanism of Velocipedes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Crank Driving Mechanism of Velocipedes.
I, CHARLES ADOLF INGLESENT, of 90, Wilmslow Road, Rusholme, Manchester,
in the County of Lancaster, Cycle Maker, do hereby declare the nature of my said
invention to be as follows:
_
My invention relates chiefly to safety bicycles, and consists essentially of an
attachment to the driving cranks of such machines whereby the leverages of the
cranks are automatically lengthened in the down or driving stroke, and
diminished in the up or return stroke without interfering with the power of
back-pedalling.
In carrying out my invention I employ the ordinary cranks, and crank pins
heretofore used for carrying the pedals, but in lieu of mounting the pedals upon
such pins, I mount pedal "shoes" or carriers thereon, of fork-like structure,
and, by preference, some 3 or 4 inches long.
In these carriers I mount the pedals, and the centre of each pedal is thereby
removed some 2 or 3 inches away from the crank pin. Said carriers are loosely
mounted on the crank pins, and each is connected to a rod or link which runs
alongside the rear wheel of the machine, and passes through an oscillating
sleeve or support on, or about, the wheel axle, or is connected to a further link
secured to a fixed or rigid arm or bracket on the machine frame.
In operating the pedals it will be readily seen that as the cranks describe the
down stroke the rods aforesaid and link connection will cause the carriers to
extend more or less in a horizontal direction, and so hold the pedal some 2 or 3
inches beyond the crank pin when the crank is at greatest leverage, and thus
increase the working leverage to a corresponding extent. On the cranks de-
scribing the up or return stroke the peculiar connections of the rods and links
cause the carriers to hold the pedals some 4 or 6 inches nearer the crank axles
than they were at the full leverage of the down stroke, and thus reduce the
leverage to that of the crank pin in so far as the idle up stroke is concerned, but
owing to the link connection maintaining a greater leverage for back-pedalling.
Whilst chiefly applicable to rear driven safety bicycles, my invention may be
applied to direct driven machines, ordinaries, tricycles, water-cycles, and other
velocipedes. It may also be applied to old as well as new machines.
1000
CHARLES ADOLF INGLESENT,
By John G. Wilson & Co.,
Agents.

page_text: provements in the Crank Driving Mechanism of Velocipedes.
I, CHARLES ADOLF INGLESENT, of 90, Wilmslow Road, Rusholme, Manchester
in the County of Lancaster, Cycle Maker, 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:
My invention relates chiefly to safety bicycles, and consists essentially of an
attachment to the driving cranks of such machines whereby the leverages of the
cranks are automatically lengthened in the down or driving stroke, and
diminished in the up or return stroke without interfering with the power of
back-pedalling.
"
In carrying out my invention, I employ the ordinary cranks, and crank pins
heretofore used for carrying the pedals, but in lieu of mounting the pedals, upon
such pins, I mount pedal "shoes' or carriers thereon of fork-like structure,
and, by preference, some 3 or 4 inches long. In these carriers I mount the
pedals, and the centre of each pedal is thereby removed some 2 or 3 inches away
from the crank pin. Said carriers are loosely mounted on the crank pins, and
each is connected to a rod or link which runs along-side the rear wheel of the
machine, and passes through an oscillating sleeve or support, on
wheel axle, or is connected to a further link secured to a fixed or rigid arm or
or about, the
bracket on the machine frame.
In operating the cranks it will readily be seen that as the cranks describe the
down stroke the rods aforesaid and link connection will cause the carriers to
extend more or less in a horizontal direction, and so hold the pedal some 2 or 3
inches beyond the crank pin when the crank is at the greatest leverage, and thus
increase the working leverage to a corresponding extent. On the cranks de-
scribing the up or return stroke the peculiar connections of the rods and links
cause the carriers to hold the pedals some few inches nearer the crank axles than
they were at the full leverage of the down stroke, and thus reduce the leverage
to that of the crank pin in so far as the idle up stroke is concerned, but owing
to the link connection maintaining a greater leverage for back-pedalling.
In order that my said invention may be more readily understood and carried 3
into practical effect I have hereunto annexed a sheet of drawings and will now
proceed to describe the same with the assistance of the various figures and letters
of reference marked theron.
Fig. 1 is a side elevation of a safety bicycle with my invention applied thereto.
Fig. 2 is a plan. Fig. 3 is a part plan of a modification.
3
(A) designates the cranks, mounted upon the crank axle (B) supported in the
ordinary bottom bracket (C). Upon the spindle or axis (1) which usually
carries the pedal (E) I mount a frame or carrier (F) of fork-like character, and
between the extremities of such frame or carrier, and some few inches away
from the axis (D) I mount the pedal (E) fitted with ball bearings, upon an 40
axis (G).
To the bridge of such carrier I connect a rod (H) which extends alongside the
machine and is connected at its opposite extremity to a link (I) connected in
turn to a bracket or arm (J) carried by the cycle frame or like rigid part, or
the wheel axle.
With the parts thus arranged it will be seen that the "throw"
the cranks (A) will be increased to the maximum in the down or driving stroke
or leverage of
and reduced to a minimum in the return or upstroke, and thus present the best
conditions possible for propelling the machine.
45

page_text: In lieu of link (I) and arm (J) I may pass the rod (H) through a swivelling
sleeve (K) (see dotted lines in Fig. 1, and full lines Fig. 3), but for reduction
of friction I prefer the link.
To reduce the weight of the parts, or to cause them to lie compactly alongside
the machine, I may dispense with one side of the frame or carrier, and make the
remaining side in one piece with the rod (H), as shewn in Fig. 3; the axle (D)
being likewise shortened, and the pedal axle carried at one end only, in the usual
manner.
Whilst chiefly applicable to rear driven safety bicycles, my invention may be
applied to direct driven machines, ordinaries, tricycles, water-cycles and other
velocipedes. It may also be applied to old as well as new machines.
Having thus particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
In driving mechanism for velocipedes, the combination with the driving
cranks of a frame or carrier upon each crank pin, a pedal axle and pedal at one
end of said frame, and a rod or extension at the other end connected to a link,
or passing through a sleeve adapted to allow for the movements of the cranks,
as and for the purposes set forth.
CHARLES ADOLF INGLESENT,
By J. G. Wilson & Co.,
Agents.