Im- PROVEMENTS IN APPARATUS FOR TRANSNITTING AND MULTIPLYING MOTIVE POWER
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by Alexander Melville Clark at the
Office of the Commissioners of Patents, with his Petition, on the
24th October 1867.-A communication from abroad by François Jobard,
Gentleman, of 29, Boulevart St. Martin, Paris.
I, ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of
Middlesex, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN APPARATUS FOR TRANSNITTING AND MULTIPLYING MOTIVE POWER,"
to be as follows:-
This Invention relates to a combination of parts forming an improved motor
whereby increased power may be produced and applied. This motor consists
of two fly wheels independent one of the other, mounted in the same plane, the
ends of their shafts being contiguous to each other. Two pullies are mounted
at each end of these shafts, the one fixed and the other loose, and provided with
bands by means of which the fixed pullies are driven alternately for setting
the fly wheels in motion. These four pullies are of equal diameter so that the
the driving bands may be readily transferred from one to the other. The two
pullies fixed one at the end of each shaft are loose and made only half the
diameter of the fixed pullies so that the two only have a surface equal to one
of said pullies. These two movable pullies are so fitted for the purpose
of transferring the belt from one to the other of the fixed pullies without
actuating them both at the same time, they being driven at different speeds,
as the belt would meet with an obstacle to its motion were it to be
placed at the same time on two fixed pullies having different speeds.

page_text: This improved motor may be set in motion in different ways, either by
means of water, steam, gas, or air engine, or by animal or human power.
Each fly wheel should have a speed of twelve, fifteen, twenty, of twenty-five
or thirty yards per second at its periphery and both at nearly the same time.
On attaining this speed the power or momentum of each fly wheel is utilized,
but so as only to reduce the speed a few yards per second care being taken to
restore this speed to the same degree it had previously acquired, which is
effected by acting alternately on the two pullies fixed near the ends of the fly
wheel shafts. The amount of power acquired per second by each fly wheel
should be ascertained when quickening it by the aid of the principal' motor in
order that it shall only accomplish its due proportion and pressure the
equilibrium in the working of the apparatus. This may be found by verifying
the number of yards or fractions of yards of speed acquired per second when
set in action by the motor as it is in proportion to the square of their velocity
that they are more or less capable of producing the power.
DESCRIPTION OF THE APPARATUS.
Figure 1 of the annexed Drawings represents a plan, and Figures 2 and 3
front and side elevations of the apparatus arranged according to this Invention.
The same letters apply to the three Figures.
A, fly wheels turning on friction rollers E and also in parts placed in the
interior of bearings I entirely surrounding the bosses of the shafts on which
the fly wheels are fixed; B, shafts on which are fixed the fly wheels A,
pullies C, D, and clutches G; C, pullies for setting the fly wheels in motion;
D, loose pullies on which the belt is placed for passing on to one or other of
the fixed pullies without acting on the latter; E, large rollers on which the
fly wheel shafts turn, the object being to diminish the friction by a rolling
surface, said rollers also turn on smaller friction rollers e; F, framing in which
the fly wheels A are mounted; f, small framing carrying the small friction
rollers e; G, clutches for throwing the apparatus in and out of gear while the
principal motor actuates the fly wheels; H, levers by means of which the
above action is effected according to the requirements of the machine;
I, bearings serving to support the fly wheels in the friction rollers E; J, framing
carrying the shafts of pullies 'M; K, belt for driving the fly wheels from any
suitable source of power; L, endless chains by means of which the pullies M
and V are put in action; M, toothed wheels or pullies on which work the
endless chain L; N, shafts on which the wheels M are fixed; O, bearings of
shafts N; P, bearings carrying slides in which work the slide Q for throwing
the clutches in and out of gear by means of leyers H; R, frame carrying the

page_text: pulley shaft for throwing the parts in or out of gear; S, pulley on which is
fixed the part for producing the above action; T, pulley for driving pulley S
making three or four turns for one of the latter in order that each fly wheel
may impart its useful effect between the time it is thrown in and out of gear;
U, frame serving to support the shaft B' receiving motion from endless
B₁
chains L; V, toothed wheels driven by pullies M; X, pullies for communi-
cating motion to any part; Z, bearings of shafts B¹ on which are fixed
pullies V, X, and T; b, shafts of large friction rollers E; h, handle by means
of which the belt is transferred from one pulley to the other during the action
of the mechanism; j', guides for the cross bar operating the levers H for
shifting the belt; q, bar supports of levers H. Fast and loose pullies may
also be substituted for clutches G in which case one pulley would be fixed on
the fly wheel B and the other mounted loosely on shaft N carrying the fixed
pullies M. The motion would still be alternate as with the couplings while
the belt would also be shifted from one to the other the same as before. By
this arrangement the endless chains L and pullies M, V, may be dispensed
with and ordinary strap pullies substituted, the shifting of the straps being
operated by the aid of a handle similar to that before described for moving the
strap setting the fliers in motion. It should be remarked that in order to
prevent the strap of these pullies acting at same time on both the fixed
pullies driven by the fliers, a loose pulley should be placed at each side of
the apparatus of double the width of the fixed pulley, by the aid of which one
of the straps may be transferred to one of the fixed pullies, while the other only
acts on the loose pulley. This is necessary in consequence of the difference of
speed of the fixed pullies driven by the fly wheels, which is constantly varying
on account of the shaft B¹ being successively set in action by the parts on
which the fliers act while at same time the two straps exert a pressure on
said shaft resulting in a difference of speed, the strap also slipping on one or
other of the pullies acting on this shaft so as to cause a loss of power.