An Improved Spiral Spring Motor.
Year: 1897

page_text: Date of Application, 30th June, 1897
Complete Specification Left, 30th Mar., 1898-Accepted, 30th June, 1898
DI BUITIVATION.
An Improved Spiral Spring Motor.
We, LOUIS DRABLAI and FRANCISQUE GEORGET, both of 25, Rue Chef de Ville,
La Rochelle, in the Republic of France, Manufacturers, do hereby declare the
nature of this invention to be as follows:-
This motor is adapted to be driven alternately by two spiral springs.
In the annexed drawings, Figs. 1 to 7 illustrate detail views of the motor which
is shown in a diagrammatic plan in Fig. 8, Figs. 9 and 10 show further detail
views.
This motor is composed of a suitable framing of cast iron with bearings for the
various parts of the apparatus.
These parts comprise a crank shaft A. Fig. 8 with two cranks A', A', two con-
necting rods B with slides P-P, connected with the cranks A¹, A¹ respectively,
two cylindrical housings C containing helical springs B', B' and shown in detail
in Fig. 4. Four connecting bars 1 for the slides D₁ in the cylinders C operating
the helical springs B', two disks E, F, with eccentrically placed pins attached
by connecting rods E to one of the slides D₁ of the cylinders. A transverso
shaft on which there are fixed the aforesaid disks E, E, and also four toothed
wheel gearings, two of which V are for operating the shaft F and two R, R, for
governing the direction of rotary motion, that is to say, forward or backward.
Two sets of barrels H containing spiral springs serving alternately as motors for
the apparatus and operating the shaft F through the gear U¹, U; V, VI, V. Two
longitudinal shafts I, I, with hand wheels T, T, for winding the spiral springs H
by means of the gear R¹, R¹, shaft and gear U, U. Two clutches with their
levers J for connecting the hand wheels T rigidly with the shafts I, for winding
the spiral springs H after they have respectively run down. Two longitudinal
arbors K for gearing the shafts F and A together either through gear R, R5, R3, R³
of the one shaft, or gear R, R4 R3, R³ of the other according to the direction of
motion: Two engaging levers L (Fig. 3) for putting the apparatus in or out of
motion as hereinafter described. A lever M operating the rod S and rocking
lever S for the reversing gear. Two fly wheels N on the crank shaft.
A strap
brake O (Fig. 6) for regulating the motion of the apparatus, the same engaging
the pulley O on the shaft A.
In order to start the motor it is necessary to move the lever L (Fig. 3) so as
to disengage the safety pawl L' from the ratchet wheels W and to bring the
wheel into gear with wheels V and V. Previous to this action the spiral
springs I have been wound up and are ready to impart their rotary movement
for the operation of the apparatus.
But the complete starting of the apparatus is only obtained on turning also
the hand wheel X of the screw 02 of the brake rod 09, so as to loosen the brake,
and enable the crank shaft A to be put into motion.
This brake has also the purpose of regulating the speed of the apparatus.
When one set of spiral springs H has run down the other set is brought into
action in the same way and that previously in action is disengaged by a contrary

page_text: movement of its lever L and may be rewound by means of the hand wheel T,
clutch J, shaft E and gear R¹, R R³, Uª, U↓.
The degree of unwinding and winding of the springs H is shown by means of
an indicator Y Fig. 7 since each time the springs unwind or wind one turn in the
one or in the other direction, a toothed wheel Z with helicoidal teeth turns a rod Z¹
and moves the indicator Y on the dial Y¹ to show the number of revolutions
obtained, which shows when the operation of each spring is finished.
In order to cut off the supply of power from the springs to the shaft F it is
sufficient to engage the safety pawls L of both the ratchet wheels W.
Finally by putting on the brake O by means of its hand wheel X the apparatus
may be stopped.
During the operation of this motor the toothed wheels V communicate the motion
of the springs H to the shaft F which gives to and fro movement to the rods D
and thus to the helical springs B¹ moving the rods B, P, and the cranked shaft A.
The helical springs are intended to facilitate the movement of the cranked
shaft A, and to facilitate uniformity in the motion of the apparatus.
In order to reverse the movement of the apparatus, the lever M is moved to
bring the gear R R* into engagement and to disengage the gear R, R³.
The same double motor can be arranged to operate the shaft A through only one
connecting rod:
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We, LOUIS DRABLAI and FRANCISQUE GEORGET, both of 25, Rue Chef de Ville,
La Rochelle, in the Republic of France, Manufacturers, 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 motor is adapted to be driven alternately by two spiral springs.
In the drawings filed with our Provisional Specification, Figs 1 to 7. illustrate
detail views of the motor which is shown in a diagrammatic plan in Fig. 8.
Figs. 9 and 10 show further detail views.
This motor is composed of a suitable framing of cast iron with bearings for the
various parts of the apparatus.
These parts comprise a crank shaft A Fig. 8 with two cranks A, A, two con-
necting rods B with slides P, P, connected with the cranks A, A respectively,
two cylindrical housings C containing helical springs B', and shown in detail
in Fig. 4. These housings are provided with slots for the passage of the slides D'.
Four connecting bars D unite the respective slides D' moving in the cylinders C.
The slides D operate during their movement helical springs B. Two
disks E, E, with eccentrically placed pins attached by connecting
rods E¹ to one of the slides D¹ of the cylinders. A transverse
shaft Fon which there are fixed the aforesaid disks E, E, and also four toothed
wheel gearings two of which V, V, are for operating the shaft F and two R, R, for
governing the direction of rotary motion, that is to say, forward or backward.
Two sets of barrels. containing spiral springs serving alternately as motors for
the apparatus and operating the shaft F through the gear U, U, V, VI, V. Two
longitudinal shafts I, I, with hand wheels T, T, for winding the spiral springs H

page_text: by means of the gear R¹, R¹, shaft R2 and gear U, U. Two clutches with their
levers J for connecting the hand wheels T rigidly with the shafts I, for winding
the spiral springs H after they have respectively run down. Two longitudinal
shafts K for gearing the shafts and A. together either through gear R,, R5, R³, R³
of the one shaft, or gear R, R, R³ R³ of the other according to the direction of
motion: Two engaging, levers L (Fig. 3) for putting the apparatus in or out of
motion as hereinafter described. A lever M operating the rod S and rocking
lever S₁ for the reversing gear. Two fly wheels N on the crank shaft.
A strap
brake O (Fiġ6) for regulating the motion of the apparatus, the same engaging
the pulley O¹ on the shaft A.
In order to start the motor it is necessary to move the lever L. (Fig. 3) so as
to disengage the safety pawl L' from the ratchet wheels W and to bring the
wheel V₁ into gear with wheels V and V. Previous to this action the spiral
springs H have been wound up and are ready to impart their rotary movement
for the operation of the apparatus.
But the complete starting of the apparatus is only obtained on turning also
the hand wheel X of the screw 08 of the brake rod O³, so as to loosen the brake,
and enable the crank shaft A to be put into motion.
This brake has also the purpose of regulating the speed of the apparatus.
When one set of spiral springs H has run down the other set is brought into
action in the same way and that previously in action is disengaged by a contrary
movement of its lever L' and may be rewound by means of the hand wheel T,
clutch J, shaft E, and gear R1, R¹, Rª, U³, U!.
The degree of unwinding and winding of the springs H is shown by means of
an indicator Y Fig. 7 since each time the springs unwind or wind one turn in the
one or in the other direction, a toothed wheel Z with helicoidal teeth turns a rod Z¹
and moves the indicator Y on the dial Y¹ to show the number of revolutions
obtained, which shows when the operation of each spring is finished.
In order to cut off the supply of power from the springs to the shaft F it is
sufficient to engage the safety pawls L' of both the ratchet wheels W.
Finally by putting on the brake O by means of its hand wheel X the apparatus
may be stopped.
The motor operates in the following manner. The motion of the springs H
is conveyed through the toothed wheel gearings U¹ U, V² V¹ V and revolves the
shaft F and consequently the disks E fixed thereon.
The disks E during their revolution gives a to and fro movement to the con-
necting rods D by means of the eccentrically placed pins and conncoting rods E'
(Fig. 5). By the movement of the rods D the slides D' are moved in the slots or
guides of the cylindrical housings C. These slides D¹ are suitably connected to
the ends of the helical springs B' and during their movement operate a similar
movement of these springs. The sliding rods P have at their one ends plates or the
like P by means of which they are connected to the springs B' (Fig. 4). These
rods P pass through or by the front slides D¹ and are not connected to them. The
springs B are of sufficient strength so that during their movement they actuate
the sliding rods P, through the connection P and thus the rods B; cranks A¹ and
shaft A. As the sliding rods P pass through the front slides D', the helical
springs B act as a cushion and are intended to facilitate the movement of the
cranked shaft A and give uniformity to the motion of the apparatus.
In order to reverse the movement of the apparatus, the lever M is moved to
bring the gear R, R into engagement and to disengage the gear R R5.
The same double motor can be arranged to operate the shaft A through only
one connecting rod;
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
A double spring motor in which two sets of spiral springs are provided with

page_text: separate winding apparatus and separate detachable gear for operating a shaft
whence motion is conveyed through reciprocating slides, helical springs, and con-
necting rods to a second shaft geared to the first by two alternative gearings for
similar and reverse motion, the whole being substantially as herein described and
illustrated.
Dated this 30th day of Mar 1800
HERBERT HADDAN & Co.,
Agents to Applicants, -18, Buckingham Street, Strand, London.