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Патент USA US2408612

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Patented Oct. 1, 1946
Ernest Alphonse Derungs and Oscar Chatelain,‘
Le Locle, Switzerland
Application October 27, 1943, Serial No. 507,854
In Switzerland October 21, 1942
3 Claims. , (Cl. 185—46)
rods 22, whereby the levers 23 are tilted and the
weights 24 approached to the axis of oscillation
of the Vibrator lever I3. By doing this, the
moment of inertia of the balance ?xed to the
lever I3 and formed by the weights 24 and their
accessories is diminished. During the above
operation the axial pressure exerted upon the rod
I8 and tube I5 is received by the ball bearing I‘I.
Object of the invention is an adjusting device
which possesses an escapement whose movements
are adjusted by a vibrator lever ?xed to the axle
of a balance whose oscillations can be influenced
with regard to their period during the running
of the device.
Such a device is quite independent of varia
tions in temperature and effects of adhesion be
On letting the button 38 go the spring 26 moves
ments, as is the case in analogous mechanisms 10 the weights 24 away from the aXis of oscillation
of the vibrator lever I3.
used up to date.
It may thus be seen that during operation
By preference, a simple and robust vibrator
of the apparatus it is possible to modify the
lever is used e. g. one of the well-known type
tween surfaces subjected to relative displace
period of oscillation and, in consequence, the
with equidistant pallets. The properties of these
escapements need not be described in detail. 15 movements of the gearings connected with the
escape wheel I 2 by means of the pinion M. In
this way and if it is a question of a motor with
variable power, a suitable braking could be ob
tained at the start of the motor and a less
However, one is not restricted to the use of this
kind of escapements.
The period of oscillation is varied by modifying
the amount of inertia of the balance ?xed to the
axle of the vibrator lever by displacing masses.
The accompanying drawing illustrates, by way
efficacious braking when the motor is no longer '
able to give its maximum power. In such a case
the button 30 or an equivalent mechanical means
of examples, one embodiment of the adjusting
device according to the invention.
Figs. 1 and 2 show only those parts of the ap
is brought into connection with an apparatus in
dicating, for instance, the tension of a spring
paratus which are necessary for understanding 25
What we claim is:
the invention.
1. In an adjusting device, an escapement, an
Referring now to Figs. 1 and 2, the reference
axle, a vibrator lever ?xed to said axle for con
characters I 0 and II designate the upper and
trolling the movements of said escapement, a
lower plate of the part of the apparatus on which
the adjusting device is mounted. On these plates 30 balance mounted on said axle, including masses
displaceable in order to modify the moment of
l0 and II an escape wheel I2 is journaled, co
inertia of said balance means tending to displace
operating with a vibrator lever I3 of the well
said masses in one direction, and means passing
known type with equidistant pallets. The oper
axially through said axle for displacing the
ation of this escapement, that is, the cooperation
of this escape wheel with this lever is well-known 35 masses in the opposite direction.
2. In an adjusting device, an escapement, an
to those skilled in the art and need not be de
axle, a vibrator lever ?xed to said axle for con
scribed in detail.
trolling the movements of said escapement, a
The escape wheel receives its movement from
balance mounted on said axle, including rocking
a pinion I4 cooperating with a non-illustrated
gearing. The axle of the vibrator lever I3 is a 40 levers, and masses ?xed to said rocking levers,
said rocking levers with said masses being able
tube I5 which is supported on the plate II by
to move away from and to approach to the
a shoulder and ends at the top in a point I6
oscillation axis of said vibrator lever in order
journaled on a ball bearing I1.
to modify the moment of inertia of said balance
In the interior of the tube I5 a rod I8 is slid
ably placed, carrying a pin I9 which traverses 45 and means passing through said axle for radially
adjusting said levers.
cut-outs 20 in the wall of the tube I5. Besides
3. In an adjusting device, an escapement, a
this, pin I9 goes through a collar 2I connected
by means of rods 22 with the shorter arm of
tube, a vibrator lever ?xed to said tube for con
trolling the movements of said escapement, a
bent levers 23 whose longer arms carry weights
24. These bent levers 23 are pivoted on a ring 50 balance mounted on said tube, including rocking
levers, and masses ?xed'to said rocking levers,
25 ?xed to the tube IS.
a slidable rod in the interior of said tube des
A spring 26 is inserted between the ring 25
tined to rotate said rocking levers in order to
and the collar 2 I.
move the masses away from and to approach
The lower end of the rOd l8 rests on a bent
lever 2‘! whose shorter arm is attached to the wire 55 them to the oscillation axis of said vibrator
28 of a Bowden cable 29.
It will be easily understood that, by pressing
upon the button 30, lever 21 is rotated and lifts
the rod I8 and, with it, the collar 2| and the
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