Improvements in Self-winding and Synchronizing Clocks.
Year: 1893

page_text: Date of Application, 25th July, 1893-Accepted, 21st Apr., 1894
Improvements in Self-winding and Synchronizing Clocks.
I, ARTHUR GOTTLOB WISEMAN, of No. 411 Olive Street, Saint Louis, in the
State of Missouri and United States of America, Watch and Clock 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, reference being had to the accompanying drawings and to the figures and
letters marked thereon:-
My present invention relates to certain improvements in self-winding and
synchronizing clocks, one magnet being used to accomplish both the winding and
the synchronization of the clock.
My invention consists in features of novelty hereinafter fully described and
pointed out in the claims.
In the accompanying drawings
Figure I is a front elevation illustrative of my invention.
Figure II is an elevation partly in section.
Figure III is a back view of the dial or disc used in connection with the
synchronizing feature of my invention.
Figure IV is a top or plan view, parts being omitted.
Figure V is an enlarged vertical section taken on line V-V Figure II.
Figure VI is a detail rear elevation.
Figure VII is an inside view of the back frame or plate of the clock.
Figure VIII is an edge view showing part of the automatic winding mechanism.
Figure IX is a diagram.
Figures X to XVII inclusive are views of the circuit breaking wheel and its
mechanism.
Figures XVIII and XIX are detail views illustrating the mechanism for
rectifying the hour and minute hands of the clock.
Figure XX is a modification.
Figure XXI is a detail perspective view.
Figure XXII is an end view of the escapement cage or drum.
Figure XXIII is a top view of the same.
Figure XXIV is a perspective view.
Figures XXV and XXVI are enlarged detail views.
I
Referring to the drawings 1 represents a suitable front plate and 2 a suitable
rear or back plate, these plates supporting the clock mechanism. 3 is the spindle
of the hour and minute hands, upon which a dial or disc 4 is loosely mounted, but
with which the dial has sufficient friction to be carried by the spindle in the
working of the clock. 5 represents the minute and 6 the hour hand mounted, as
usual, on the spindle 3. 7 is the dial of the hour and minute hands.
I will first describe the self-winding feature of the clock. 8 represents a magnet.
9 represents an armature lever pivotted to the frame of the clock at 10. The
lower end of the lever 9 carries a pawl 11, which is normally in engagement with
the ratchet wheel 12 on a shaft 13, which is connected by a pinion 13 to a circuit
breaking wheel 20, (see Figures II and XI), to which the end of the main
spring 21 of the clock is secured, and thus it will be seen that as the lever 9 is
vibrated, the clock will be wound through means of the magnet. 14 is a spring
actuated pawl for preventing retrograde movement of the ratchet wheel 12.
One terminal 15 of the magnet has an arm 15 that bears against an insulated
cross bar of the clock frame or case, except when it is raised by an arm 60, as

page_text: hereinafter explained, and the other terminal 16 extends from the magnet to a
contact disc or plate 17, as shown in Fig. VII.
19 is a retracting spring, drawing the armature into its normal position when its
circuit is broken.
The circuit breaking wheel 20 is loosely mounted on the shaft 3.
The main spring 21 is enclosed by a barrel 21ª secured to a pinion or gear
wheel 22 tightly mounted on the shaft 3. One end of the main spring contained in
the barrel 21 is secured to the wheel 20 as stated, and the other end is secured to
the barrel 21" or, what would be the same thing, to the wheel 22. The wheel 22
is in connection with the escapement train of gearing.
Now it will be understood that, one end of the main spring being made fast to
the barrel 21, which is in turn made fast to the wheel 22, and the other end of
the spring being made fast to the circuit breaking wheel 20, the shaft 3 will be
driven by the spring, and that, as this shaft turns once in an hour, the spring will
be unwound one coil each bour, and to compensate for this unwinding, the circuit
breaking wheel inust be turned forward just one revolution each hour.
The means for giving this movement to the circuit breaking wheel will now be
described, reference being made to Figures VII to XVII, inclusive, of the
drawings.
It
The fixed disc 17 of electro-conducting material is parallel with the circuit
breaking wheel and is transverse to the shaft 3, with which it is concentric. I
prefer to make this disc of aluminium, because of its non-oxidising character.
is connected to the frame or plate 2 through means of insulating blocks or
brackets 23.
24 is a lever fulcrummed upon a post 25 projecting from the circuit breaking
wheel 20. The lever carries at one end a conducting brush 26 that is adapted to
run against the face of the disc 17, and thus close the electric circuit. 27 is a
spring acting on the inner side of the lever 24 and adapted to push the brush
against the disc 17.
28 is a lever fulcrummed at 29. The shorter end 28" of the lever 28 is below the
end 24" of the lever 24, so that when the end 28" is thrown outward, the conducting
brush 26 is thrown out of contact with the disc 17; the lever 28 is held in the
above described position by a spring catch 30 pivotted to the wheel 20 at 31 and
having an arm 32 receiving the pressure of a spring 33 to hold the arm down and
the spring catch in engagement with the upper side of the end 28% of the lever 28.
In order to release the catch the arm 32 is raised by means of a pin 34 on a
lever 35, aud this pushes the catch 30 off the top of the lever and allows it to fly
out, when the contact lever 24 swings on its fulcrum 25 and the brush 26 comes in
contact with the disc 17. Normally, while the clock is running, the circuit is
broken, while, at any point determined on, the electric circuit is closed while the
circuit breaking wheel is making one revolution.
It will be seen that the running of the clock is not affected because the pressure
of the main spring is maintained upon the shaft 3.
36 is an incline upon the inner side or face of the wheel 22 and concentric with
the shaft 3. 37 is a rod parallel with the shaft 3 and working in bearings in the
wheel 20; this rod carries an anti-friction roller 38 bearing upon the incline 36, so
that as the wheel 22 rotates, the wheel 20 being at rest, the rod 37 is gradually
forced outwardly. The rod is connected by one end 37 to a lever 39 fulcrummed
to the wheel 20 at 39ª. 40 is a spring drawing the end 39b of the lever 39
inwardly. 41 is a catch engaging the end 39° of the lever 39, when the other end
has been carried to its outer position. The catch 41 is actuated by a spring 41" to
throw it into active position. The spring catch has a finger 42 extending over the
end of the lever 35 and, by its pressure on the end of the lever, serving to force
out the other end of the lever and release the catch 30, as before explained. The
catch 41 has an arm 43 that extends nearly to the wheel 22, and upon the wheel is
a pin or stud 44 that engages with the arm 43 and moves the catch first forward
and then backward during the process of winding.

page_text: The operation will now be described.
The contact brush 26 is out of contact with the disc 17 and the circuit breaking
wheel 20 is at rest and the shaft 3 turning at the speed of one revolution in an
hour. At this time the rear end of the contact lever 24 is held out by the end 28*
of the lever 28 beneath it, and the other end of the lever 28 is held by the spring
catch 30, and these parts retain their position until the electric contact is to be
made. As the shaft 3 rotates, the incline 36 comes to the anti-friction wheel 38
and the end of the lever 39 is gradually thrown outwardly from the position shown
in Figure XIII to the position seen in Figure XIV. The other end 39° of the
lever 39 is now in position to allow the catch 41 to engage over it, and this it does
under the influence of the spring 41". Just at this time the stud 44 of the wheel 22
strikes the projection 43 of the catch and, by forcing in that end of the lever 35,
throws out the other end and disengages the catch 30 from the end of the lever 28,
allowing such end to fly out, and allowing the contact lever 24 to move the other
end 28 of the lever inwardly and to carry the brush 26 into contact with the
disc 17. The circuit breaking wheel now rotates under the influence of the electro-
magnet and described connections, the revolution occupying, say, ten seconds.
It
As the revolution is completed, the projection 43 overtakes the stud 44 and,
impinging against it, is held backward so as to pull the catch 41 off the end of the
lever 39, when the other end 39b of the lever 39 descends, carrying down the
end 28 of the lever 28 and throwing out the other end 28 beneath the inner end
of the contact lever and retracting the brush 26, thus breaking the contact.
will be observed that the electric circuit is broken by the inward movement of the
end 39% of the lever 39, the said lever acting on the levers 28 and 24 in the manner
described. It will also be seen that the end 39 of the lever 39 is gradually moved
outwardly by the incline 36 while the electric circuit remains broken.
catch 30 allows the above action by holding down that end of the lever 28 until
the revolution of the wheel 22 is completed and until the projection 43 is engaged
by the stud 44, and the catch is disengaged from the lever 28.
The
The electric circuit may be arranged in any manner that will produce the
desired effect.
The diagram Figure IX, in connection with the other figures, will serve to show
an effective arrangement. The terminal 16 extends from the magnet through the
battery 9 to the insulated plate 17. The other terminal-15 extends from the
electro-magnet and has an arm 15ª that rests normally on an insulated cross bar 15"
of the clock frame (the arm 15ª is shown raised from the cross bar in Fig. II, but
this is not its normal position) and the circuit between the bar 15 and the
plate 17 is established, (when the brush 26 is in contact with the plate) by
passing through the clock-work to the armature lever, and thence through the
spring 9 and screw 15° to the cross bar. As the armature vibrates, its lower end
leaves the point of the screw 15°, and returns to it again, thus making and
breaking the electric circuit. 9 represents the station from which the clock is
synchronized and 9d the ground wire.
I will now describe the synchronizing feature of my clock, which I accomplish
through means of the same magnet and armature which is utilized for winding the
clock, thus availing myself of but a single magnet and armature for both winding
and synchronizing.
The dial 4, as already stated, is mounted on a shaft 3 with sufficient frictional
contact to turn with the shaft in the ordinary working of the clock, while, by
applying sufficient pressure to overcome the friction, it can be turned on the shaft.
This dial is provided with a pin 50 (see Figures I, III and IV), which pin
comes against the lower end of a lever 51 depending from a shaft or rod 52
jurnalled in the frame of the clock (see Figures I and IV). On the shaft 52 is
a pin or projection 53, which, as the shaft is turned by the pin 50 coming against
the lever 51, bears against an incline or cam face 54 on an arm 55, which is
mounted on a rod 56 supported by the clock frame.

page_text: As the pin 53 bears against the incline 54, it forces the arm 55 laterally in the
direction of the arrow (Figure IV) against the pressure of a spring 57 which
surrounds the rod 56, and restores the arm 55 to its original or normal position
when the pin 53 turns back to its normal position. As the arm 55 is thus forced
laterally, its outer end is brought into position to be acted upon by a pin 58 on the
armature lever 9 (see Figures II and IV), the arm having an incline 59, against
which the pin 58 bears and works when the arm has been thus forced over and the
armature lever is moved as hereinafter explained.
Upon the rod or shaft 52 is also a depending arm 60, a perspective view of which
is shown in Figure XXIV; the lower end of this arm 60 is bent as shown at 61
and carries a contact plate 62 insulated from it as shown at 63. As this rod or
shaft 52 is turned, as described, its end 61 comes in contact with the end 15" of the
wire 15, which, as stated, bears against the clock case when in its normal position,
and raises this wire out of contact with the clock case, as shown in Figure II, and
at the same time the contact plate 62 closes the circuit between the end 64" of a
wire 64 from the magnet and the end 65* of a ground wire 65. It is proper to
state in this connection that when the arm 60 is raised to close the circuit between
the wires 64 and 65, by bringing the plate 62 in contact with both of the ends 64°
and 65 of these wires, that the wire 16 is inoperative, for the reason that at this
time the brush 26 of the winding mechanism is not bearing against the disc or
plate 17.
The arm 55 has a depending arın 66, which, when the arm 55 is raised by the
armature lever 9 being attracted by the magnet 8 as explained, comes against the
inner end 67 of a bell crank lever 67 pivotted at 68 (see Figures IV and XXV)
and, by moving the end 67 of the lever, moves the end 69 of the lever in the
direction of the arrow, Figures IV and XXV. The point of the end 69 of the
lever fits behind a disc or plate 70 on the second hand shaft 71, which shaft also
carries the escapement wheel 72 and cage 73, the escapement wheel not being
mounted directly on the shaft but on a sleeve 74 through which the shaft passes.
The shaft is held in its normal position by a spring 75 (see Figure V) which fits
between the disc 70 and a disc 76 on the sleeve 74, the sleeve being held from
deflection by the spring 75 through means of a bracket 77 (see Figure IV).
On the escapement wheel 72 is a toothed wheel 78 which is engaged by a pin 79
on an arm 80 secured to the cage 73.
When the lever 67" is moved as described, the second hand shaft 71 is shifted end-
wise against the pressure of the spring 75. As it is thus shifted the pin 79 is carried
out of engagement with the teeth of the wheel 78, and thus the shaft 71 is dis-
connected from the escapement wheel and, under the influence of the main spring
of the clock (with which the second hand shaft is connected by gearing as usual),
is turned until a pin 81 on the cage comes against a stop 82 projecting inwardly
from the back plate or frame of the clock, which contact takes place when the
second hand points at 12 on the dial if that is the hour the clock is synchronized,
or if the clock is synchronized at some other hour, then the contact takes place
when the second hand points at that hour, the time of synchronization being pre-
determined by turning the dial 4 to any desired position on the minute hand shaft,
so that the pin 50 will engage the arm 51 sooner or later. It will thus be seen
that when the hour or time of synchronization arrives and the current is passed
through the magnet to attract the armature lever, the mechanism which moves the
second hand will be thrown out of gear, so that the main spring will act upon the
second hand 83 to rectify it if out of time. There is but one impulse or but one
movement of the armature lever that takes place in synchronizing, and as soon as
the pin 50 leaves the lever 51, the parts all resume their norinal position so that
the usual operation of the clock is not interfered with, and when in their normal
position they are not operated upon by the action of the armature or armature
lever in winding the clock as the arm 55 is out of the path of the pin 58.
The rod or shaft 52 has an arm 84, which, as the rod or shaft is turned by the

page_text: pin 50 engaging the lever 51, comes against a contact wire 85 from the standard
clock to complete the circuit, this wire 85 being held by a non-conducting block or
holder 85, see Figure 1.
It will thus be understood how the second hand is synchronized, and, to
synchronize the minute hand at the same time that the second hand is synchronized,
I secure a disc 86 to the minute hand sleeve, which disc has a V notch 87, see
Figures II, XVIII and XIX.
88 is an arm pivotted at 89 to the clock frame and provided with a conical or
V-shaped end 90.
On the shaft 56 is a lever 91 (see Figure I), which has a friction roller 92 in its
1er end that bears against the arm 88. As the arinature lever is attracted by
the magnet when the second hand is synchronized, it, through means of the arm 55
and rod 56, moves the lever 91 in the direction of the arrow Figure I and forces
the V shaped end 90 of the arm 88 into the V shaped notch 87 of the disc 86,
and as the V shaped end of the arm seats itself in the V shaped notch, it will
move the disc either way and thus rectify the minute hand as will be readily
understood.
The lever 88 and arm 55 are of course both arranged to turn with the rod 56,
while the arm 55 is free to move end wise on the rod, or the rod may be arranged to
move endwise slightly to provide for the lateral movement of the arm 55, which
movement of course is very slight, and in this case the arm 55 would be rigidly
secured to the rod.
When the lever 91 returns to its normal position, the arm 88 is raised out of
contact with the disc 86 by means of a suitable spring 95.
The synchronizing circuit takes the following course. A current from the
central station or standard clock passes through the wire 9*, thence through the
contact wire 85 Figure I, which at such time is brought into contact with
the arm 84 on the shaft 52 by means of the pin 50 pressing against the rod 51 on
shaft 52, thus enabling the current to pass through the wires 60 and 15 into the
magnet 8 and thereby cause the armature lever 9 to be attracted to the magnet 8.
The lever 9 acts on the parts as hereinbefore stated and, on the shaft 71 carrying
the second hand now becoming disengaged from the escapement wheel, it begins to
turn round and continues to do so until the pin 81 strikes against the stop 82. At
the same time the lever 55, in the manner hereinbefore described, through the
medium of levers 91 and 88, causes the minute hand to be synchronized.
It is desirable, during the time of synchronization, to have the parts so arranged
that the movement of the armature will not act upon the winding mechanism of the
clock, so that the synchronizing current will not have to move the winding
mechanism as well as the synchronizing mechanism. To accomplish this I secure an
arm 96 to a rod 97 supported in this clock frame, see Figures I and II, to which
rod is also secured an arm 98 that has its lower end bent to engage the heel 11ª of
the pawl or dog 11, which is pivotted to the lower end of the armature lever and
which engages the ratchet wheel 12 as stated. The lower end of the arm 96 has
an out-turned end 99, which is in the path of the lever 51, so that just before the
pin 50 leaves the end of the lever 51, the lever comes against the arm 96 and, by
turning the rod 97, moves the arm 98, which lifts the pawl or dog 11 out of engage-
ment with the ratchet wheel 12, as shown in Figure II, thus permitting a movement
of the armature lever during the time of synchronization without imparting
movement to the winding mechanism.
In Figure XX I have shown a modification of the notch 87 in the disc 86, which
consists of two pins 101 secured to the disc between which the conical or V-shaped
end 90 of the arm 88 may be pressed instead of being pressed into the V-shaped
notch 87.
It is sometimes desirable to release the main spring of a clock and allow it to run
down, and this can very easily be applied to my present arrangement by simply
providing a means for moving the stop 82 out of the path of the pin 81 when the
cage 73 is forced over, as explained, to carry the pin 79 out of engagement with

page_text: the wheel 78. The mechanism which I have shown for thus moving the stop 82
(see Figure VI) consists of an arm 102 pivotted at 103 to the clock frame and
provided with a pull string or wire 104. 105 is a lever pivotted to the clock
frame at 106, and to the inner end 107 of which, the stop pin 82 is secured. The
ou er end 108 of the lever 105 is inclined, as shown in Figure XXI. and it is
against this end 108 of the lever that the arin 102 is drawn by the pull wire or
string 104, and as the arm is thus drawn against the outer end of the lever, the
inner end 107 of the lever, with the stop 82, is moved outwardly carrying the stop
-out of the path of the pin 81, as explained.
109 is a spring for holding the inner end of the lever and its stop 82 in their inner
or normal position. To move the pin 79 out of engagement with the wheel 780
when the arm 102 is drawn back, I extend the pivot rod 103 of said arm across the
clock and secure to said rod an arm 110 (see Figure XXV and dotted lines
Figure VI), which engages the end 67 of the lever 67", so that this lever will thus
move the second hand shaft when the arm 102 is pulled to turn the rod 103, and
thus by a simple pull on the wire or string 104, the escapement of the clock is cut
-out and the stop, which would otherwise prevent the retrograde movement of the
cage 73 more than one revolution, is withdrawn.
Having now particularly described and ascertained the nature of iny said
invention and in what manner the same is to be performed 1 declare that what
I claim is.
1. In a self-winding clock, the combination of a circuit-breaking wheel, a shaft
upon which said wheel is loosely mounted, a gear wheel securely mounted on said
.shalt, a drum secured to said gear wheel, and a main spring secured by one end to
said circuit-breaking wheel and by the other end to said drum, substantially as set
forth.
2. In a self-winding and synchronizing clock, the combination of a magnet, an
armature lever, mechanism operated by said magnet and lever to wind the clock,
and mechanism operated by said magnet and lever to synchronize the clock,
whereby but one magnet and armature is required to both wind and synchronize,
substantially as set forth.
3. In a self-winding and synchronizing clock, the combination of a magnet, an
armature lever, mechanism operated by said magnet and armature lever to
wind the clock, mechanism operated by said magnet and armature lever to
synchronize the clock, and mechanism for disengaging said lever from the clock
mechanism when the clock is to be synchronized, substantially as set forth.
4. lu a seli-winding and synchronizing clock, the combination of a magnet, an
armature lever, a disc or dial adapted to move with the minute hand of the clock,
a pin or projection on said disc, mechanism operated by said disc to close the
circuit, and mechanism operated by said disc to disconnect said armature lever from
the winding mechanism of the clock when the clock is to be synchronized,
consisting essentially of arms 96 and 97 and a lever 51, substantially as set forth.
J. In a synchronizing clock, the combination of a magnet, an armature lever, a
disc or dial adapted to move with the minute hand of the clock, a pin or projection
on said disc, and mechanism operated by said disc to close the circuit, substantially
.as set forth.
6. In a synchronizing clock, the combination of a magnet, an armature, a disc or
dial adapted to move with the minute hand of the clock, mechanism moved by said
dise to close the circuit, an arm moved by said disc into position to be engaged by
the armature lever, and mechanism moved by said arm when the armature is
attracted to the magnet to disconnect the second hand shaft from the escapement of
the clock, substantially as and for the purpose set forth.
7. In a synchronizing clock, the combination of a magnet, an armature lever, a
disc or dial adapted to move with the minute hand of the clock, a pin carried by
said disc, a lever adapted to be engaged by said pin, an arm 55 having an inclined
face, a pin or projection moved by said lever and bearing against said inclined face

page_text: on the arm to move the arm laterally, a projection on said armature lever adapted
to engage the end of said arm when the armature is attracted by the magnet, an
arm 66 operated by said arm 55 to move the second hand shaft longitudinally, a
projection carried by the cage on said second hand shaft, and which is adapted to-
engage a toothed disc on the escapement wheel, a pin 81 on said cage and a stop 82,
substantially as and for the purpose set forth.
8. In a synchronizing clock, the combination of a magnet, an armature lever, au
arm 55 adapted to be moved by the minute hand shaft, bell crank lever 67", a
second hand 71, a cage on said second hand shaft, a projection 79 carried by said
cage and adapted to engage a toothed wheel or dis secured to the escapement
wheel, a pin 81 on said cage and a stop 82, substantially as and for the purpose set
forth.
9. In a synchronizing clock, the combination of the magnet, an armature lever,.
an arm 55 having an inclined end 59 adapted to be engaged by a pin on said
armature lever, and having an incline 54, a rod 52 having a pin 53 and a lever 51,.
a disc or dial 4 having a pin 50, a bell crank 67, an arm 66 depending from the
arm 55 adapted to engage and move said bell crank lever, a second hand shaft 71,
a disc on said second hand shaft behind which said bell crank lever fits, a cage on
said second hand shaft having an arm 80 carrying a pin 79, a toothed disc or
wheel 78 secured to the escapement wheel, a projection or pin 81 on said cage, and
a stop 82, all substantially as and for the purpose set forth.
10. In a synchronizing clock, the combination of a magnet, an armature lever,
mechanism moved by said armature lever to disconnect the second hand from the
escapement wheel, and mechanism moved by said armature lever to correct the
minute hand of the clock, said mechanism consisting essentially of a notched disc,
an arm having a conical end, and a lever arranged to move said arm to press its
conical head into said notch, substantially as and for the purpose set forth.
11. In a synchronizing clock, the combination of a magnet, an armature lever, a
notched disc connected to the minute hand of the clock, an arm having a conical
end to engage in said notch, and a lever adapted to bear against said arm and
which is moved by said armature, substantially as and for the purpose set forth.
12. In a synchronizing clock, the combination of the rod 52 having a lever 51,
a disc carried by the minute hand shaft and adapted to move said lever, and an
arm 60 on said shaft carrying an insulated contact plate 62 for closing the circuit,
substantially as and for the purpose set forth.
13. In a synchronizing clock, the combination of an arm 102, lever 105 having
an inclined end 108, a stop 82 secured to said lever, a cage carried by the second
hand shaft and having a pin adapted to engage a toothed disc carried by the
escapement wheel, a più 81 on said cage, an arm 110 adapted to be moved by said
arm 102, and a bell crank lever 67 adapted to move said second hand shaft,.
substantially as and for the purpose set forth.
14. In a synchronizing mechanism for clocks, an armature, a seconds-hand shaft,
a cage 73 carried loose on said shaft, a pin 79 and wheel 78 adapted to connect the
said shaft to said cage, and mechanism between the armature and seconds-hand
shaft adapted to rotate the shaft and disconnect it from the cage 73, for the purpose.
set forth.
15. In a synchronizing mechanism for clocks, an armature, an armature lever,
the seconds-hand, a shaft giving motion to the seconds hand, and an escapement
wheel 72 having pin and wheel connection with the said shaft, and mechanism
between the armature lever and said wheel adapted to rotate the wheel by the
simple movement of the armature lever, for the purpose set forth.
16. In a synchronizing mechanism for clocks, an armature lever (having a pawl,.
a wheel acted on by the pawl on the movement of the lever, and a wheel upon a
shaft of the clock mechanism adapted to engage a wheel on the axis of the pawl
wheel and having frictional connection with its shaft, substantially as and for the
purpose set forth.
17. In a synchronizing mechanism for clocks, a seconds-hand shaft, a cage 73, a

page_text: pin 79 and wheel 78 engaging the shaft with the cage 73, and which are disengaged
by an end wise movement of the shaft, an armature lever, mechanism in connection
with the armature lever adapted to revolve and give the said end wise motion to the
seconds hand shaft, and a spring restoring the shaft to engagement with the cage,
substantially as set forth.
18. In a synchronizing mechanism for clocks, an armature lever carrying a pawl,
gear mechanism connecting the pawl wheel with the clock mechanism, a bell crank
lever 67-69, mechanism for moving the bell crank lever, a seconds-hand shaft
baving endwise movement, and which is engaged by said bell crank lever, a cage
on the shaft, a pin and wheel connection between the shaft and cage adapted for
engagement and disengagement by the end wise movement of the shaft, and a spring
acting on the shaft in opposition to the bell crank lever, substantially as and for
the purpose set forth.
19. In a synchronizing mechanism for clocks, an armature lever carrying a pawl,
a wheel acted on by the pawl, a bell crank lever 67-69, a mechanism for moving
the bell crank lever, seconds-hand shaft with wheel and pin connection with a cage,
and having a collar adapted to receive the pressure of the bell crank, and a spring
acting upon the shaft in opposition to the bell crank, substantially as and for the
purpose set forth.
20. In an electric winding clock, the shaft 3, the wheel 22 on said shaft and
connected with the main spring, the wheel 20 on said shaft, the circuit breaking
lever with its brush 26, the lever 28, the catch 30, lever 35, catch 41 having a
finger 42, and a stud 44 on said wheel 22, substantially as set forth.
21. In an electric winding clock, the shaft 3, the wheels 20 and 22 on said shaft,
the main spring connected to the shaft and to the wheel 22, a movable contact
device 26, and a disc 17 adapted for continuous contact with the device during the
rotation of the wheels 20 and 22, substantially as set forth.
22. In an electric winding clock, the shaft 3, a wheel 22 on said shaft and having
an incline 36, a stud 44, a wheel 20 on said shaft, a rod 37 parallel with said shaft
and having bearing in the wheel 20, the levers 39, 28 and 24 with springs 27 and 33,
and the catch 41, substantially as set forth.
23. In an electric winding clock, the shaft 3, wheel 22 on said shaft having
incline 36 and stud 44, wheel 20 on said shaft, main spring 21, rod 37 with wheel 38,
lever 24 with brush 26, the conducting disc 17, the levers 28, 35, 39, catches 30
and 41, and an electric winding device, substantially as set forth.
24. In an electric winding clock, the described combination of the main spring 21
and wheel 20 on the shaft 3, and the electric winder composed of the magnet 8,
armature lever 9, pawl 11, ratchet wheel 12, and spur wheel 13ª, all constructed
substantially as set forth.
Dated this 25th day of July 1893.
ARTHUR GOTTLOB WISEMAN,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.