Driving Mechanism for Cycles, Lathes, and other Machines.
Year: 1898

page_text: Date of Application, 1st Apr., 1898-Accepted, 20th Aug.,
1898
COMPLETE SPECIFICATION.
Driving Mechanism for Cycles, Lathes, and other Machines.
I, JOHN WALKER, of 9, Tempest Road, Beeston Hill; Leeds, in the County of
York, Engineer, 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:―
This invention has for its object the arrangement of a new combination of
mechanism suitable for driving various classes of machines requiring a differential
motion, such as lathes and other machines driven by speed coned pullies; also
to so arrange the apparatus that it is applicable to cycles and like road vehicles,
by the application of which, the speed of the vehicle may be varied to run slower,
as for example when going up hills.
In describing my invention in detail, reference is made to the accompanying
drawings in which Fig. 1 represents a side elevation of a lathe head combined
with gearing arranged according to my invention.
Fig. 2 is an end elevation of the same.
Fig. 3 is a side elevation of a portion of a cycle frame to which my invention
is added.
Fig. 4 is a plan of same, and
Fig. 5 a sectional elevation showing one side of a clutch suitable for carrying
out my invention.
Like letters relate to like parts where they appear in the drawings.
The lathe spindle A is driven by a band or belt B from the pulley C fixed on
the shaft D on which are mounted and free to rotate thereon the pinions E
and E gearing respectively with the toothed segments F and F¹ secured to or
forming part of the oscillating lever F³.
Secured to the shaft D is a double clutch G which may be formed with ratchet
teeth similar to those shown by Fig. 5, the teeth are on each side of the centre
plate of the clutch. Connected to each pinion E and E¹ is a ratchet disc G¹ and
between the ratchet teeth of the discs and clutch are placed rollers or balls G³
so that on the oscillation of the arm F³, the pinions E and E' and the respective
ratchet discs G¹ are operated, causing the balls or the like of each ratchet disc to
alternately engage with the respective teeth on each side of the clutch G, and
thereby to impart rotary motion to the shaft D, pulley C and lathe spindle A..
The number of teeth in the segments F and F¹ and in the pinions E and E¹ are
so arranged as to give an equal and constant rotary motion to the lathe spindle A
or the like.
In order to give to the spindle A or the like a varying speed suitable to the
nature of the work in the lathe, I secure on shaft M a disc I and a pulley L, the
latter being rotated by the belt K, and in the disc I is formed a groove or slot H
in which is secured a movable stud H¹, and in the slot hole J of the oscillating
link F2 is secured another movable stud J. The two studs are connected together
by a rod N so that on adjusting the said movable studs, varying ranges of speed
and power are obtained and imparted to the rotating shaft D, the continuation of
the rotating motion during the reversal of the oscillating movement of the seg-
ment arm F is retained by the momentum of the pulley C; or in case the

page_text: pinions E and E are not mounted on the shaft D as shown, but on an independent
shaft connected to the shaft D by suitable gearing, or pullies and belt; then I
prefer to place a heavy pulley or balance wheel on the pinion shaft for the purpose
of retaining the rotary motion of the shaft D and lathe spindle during the reversal
of the motion of the oscillating arm and segments F and F¹.
On applying my improved arrangement of differential motion to the axle or
shaft of foot motors such as cycles and like road vehicles, I mount a toothed quad-
rant or segment 0 on a suitable pin as support on each side of the machine, and
gearing with the said segment is a pinion P attached to a centre ratchet disc G¹
similar to that shown by Fig. 5, and mounted within the clutch G which is
secured on the axle of the machine.
The quadrant or segment O is provided with a slotted arm 0¹ in which is secured
a movable stud 02 supporting one end of rod T, the opposite end of which is
attached to the slotted link S carried by a stud at U attached to the framework
of machine.
A stud or distance piece secured to or forming part of the pedal crank R passes
through the slot hole St of arm S and is secured to the short crank V placed at a
suitable angle in relation to the pedal crank R and keyed on the axle Q, so that
on treading the pedal crank R the short crank V and axle Q are also operated,
the stud or distance piece connecting the two cranks traverses the slot hole St of
arm S in a manner that, when the connecting stud or distance piece between the
pedal crank R and short crank V traversing in the slot hole S¹ is moving towards
the bottom of said slot hole, the motion given to the arm S is accelerated when
nearing the bottom, thereby a quick reversal in the movement of the stud and a
quick return in the upward movement and likewise of the pedal crank lever R
is obtained.
By adjusting the position of the stud 02 in the slot hole of arm 0¹, the speed
at which the segment 0 and pinion P are operated, is regulated in a manner that,
by moving the stud 02 at the top of the slot, say when about to rise a hill, more
leverage is obtained and the toothed segment and pinion P will not move so
rapidly, therefore the machine will travel at a slower pace
By applying a strap Y over the circumference of the clutch G and fitting a
lever Z thereto somewhat as shown, a suitable brake is arranged for retarding the
speed of the machine when desired.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of an oscillating slotted arm F2 provided with toothed seg-
ments F and F1, rotating pinions E and E, and clutch G, the latter secured on a
shaft from which rotary motion is communicated to a lathe or other machine
spindle or shaft, all arranged substantially in the manner as herein before described
and shown.
2. The combination of treadle crank R and appendages with a slotted link S
coupled to arm O¹ of oscillating segment O with which is geared pinion P engag
ing with the ratchet disc G₁ of clutch G, arranged substantially in the manner
and for the purpose as herein before described and shown.
Dated this 31st day of March 1898.
JOHN WAUGH,
Agent, Sunbridge Chambers, Bradford.