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Патент USA US2412077

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Dec. 3, 1946.
s, w, BRAMLEY'
‘
2,412,077
CLOCK WINDING MECHANISM
Filed June-l2, 1944
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INVENTOR
5.7km?“ W-.Jmm/ey
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BY
.
.
C‘ W.
ATTOR EY
27
Dec} 3, 1946.
‘
"
s, w, BRAMLEY .
>
2,412,077
CLOCK WINDING MECHANISM
Filed Julie 12, 1944
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:5 Sheets-Sheet 2
8/
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.jgz'ya'a.
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l'
'. INVENTOR
JZY 252582115X '
Patented Dec. 3, 1946
2,412,077
UNITED STATES PATENT oer-10E "
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2,412,077.
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CLOCK WINDING MECHANISM
Sylvanus, W. Bramley, White Plains, N. Y.
' Application June 12, 1944, Serial No. 539,945
8 claims. (01. 135-40)
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This invention relates to automatic clock winding mechanism, more particularly of the type in
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form ofthe invention,‘
which an electromagnetic circuit is employed. In
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Fig. 12is a view partlyv in section onthe line
this type ofv apparatus energy‘is stored in a spring
by the movement of an armature of an elec
tromagnet. The energy of the spring is then em
ployed to operate a train of clock mechanism.
When the energy of thespring is partly dissi
pated, electrical contact is‘ made which again en
l2‘—|2'of Fig. 11,
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Fig. 13 is a sectional View on line I 3—-l 3'» of“
Fig. 12,
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Fig. 14 is a sectional view online l4—-‘|4i of‘!
Fig. 13,
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Fig. 15 is an enlarged‘view of a1 part of the
ergizes‘ the magnet and restores energy to the 10
spring.
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Fig. 11 is an elevational side View of a modi?ed
switch
mechanism,
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Fig. 16'is a diagrammatic viewof theielectrical'
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Numerous ‘mechanisms of this type have been
proposed, notably fo'r'use- on vehicles, such as
connections and switch mechanism,‘
Fig. 17 is an enlarged fragmentaryqview oi a,
automobiles. Practical di?iculties have-‘however
partof the switch mechanisni,"and
been met; in providing a mechanism which will 15
be sufficiently reliable in its operationto provide
accuracy of time keeping. It is an object of the
present invention to provide improved mechanism
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Fig. 18‘shows another switch‘ mechanism and 1
associated parts.
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In the several views like parts are shown
the
same
numerals.
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Referring to' Figs; 1 to» 9, an electromagne't'l,
vide improved velectrical and mechanical make 20' including core 2, pole pieces'3i'," 4,:.and_ coil’ 5,_'is
mountedon the plate 6, the pole pieces3, 4 being
and break mechanism, and in general, to provide,
secured to the; plate 6 by screws 1 ‘and the coil
improved electrical and-mechanical means simple
5 being in spaced relation to said plate. Insula
in ‘construction andadapte'd for long-continued
tionpieces not shown inthe drawings insulate the
operation to provide! reliable,‘ accurate time. re
cording.
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25 endsof‘ithe coil from the pole pieces;'- The bind
ing, post ‘8' passes through anaperture in' the’
The invention will be de?ned in the claims and
plate and is insulated. therefrom by insulation
described in the following description taken in
ID, the post 8 being securely held in place by
‘conjunction with the appended drawings in which
metallic gaskets I l, to one of which one end» of
Fig. 1 is a plan view taken on the line l--I
of Fig. 2,
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30 the‘ coil is electrically connected as by soldering
l2. The other end of the coil is securedlin me
Fig. 2 is a side’view showing the clock with the
tallic and electrical connection withithe plate by
casing removed to show the clock mechanism,
means ofa screw or rivet I3. Adjacent‘ the pole
Fig. 3 is a plan view generally similar to Fig.
piece 3, there is mounted 011313116 plate 6 and in
1 showing the relative positions of armature and
electromagnet when the main spring is fully ten 35 sulated therefrom by the ‘insulation‘li, a, small
plate l4 carrying an upstanding pin 20'extending
sioned, that is, when the clock is fully wound up,
transversely to the plate M. The pin 20 is made of
Fig. I showing the relative positions of armature
pure silver and‘ the plate [4 of which the pin
and electromagnet in the “run down” position,
20 is an ‘extension may. also be made of silver for s‘
Fig. 4 is a view similar generally to Figs. 1
and 3 showing the relative positions of armature 40 the sake of convenience although the said. plate
and electromagnet intermediate the positions
l4 may be made of other metallic material, e. ‘g.
shown in Figs. 1 and '3,
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brass, to which the pure ‘silver pin 20 may be
joined by brazing. Secured to the plate“! is the
Fig. 5 is a reverse view of the mechanism shown
to solve the problems which have arisen, to pro
in Fig. 1,.
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' Fig. 6 is a view partly in section on the line 6—8
of Fig. 5,
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Fig. 7 is a view‘similar to that shown in Figs. 1,
3 and 4 with, however, all parts removed except
the electromagnet and its electrical connections,
binding post 2|; which passes through apertures
in both plates and is insulated from the plate by
insulation pieces l5 and. 22. The. postv 2|. is held
in?rm‘ engagement with the ‘said insulation and
plates ‘6 and H by means of a gasket or lw'asher;
The train of clock mechanism indicated gen
Fig. 8‘ is a diagrammatic view villustrating the so erally as is conventional.’ rIfhis mechanism is
electrical circuit employed,
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Fig. 9 is an enlarged detail view showing the
‘special structure of the make and break ‘contact
means,
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Fig. 10 is a section on linen-1n of Fig. 11',
mounted’ on segmental parts 24, 25, and 26 which
in ‘turn are mounted on posts 21 securedtq the .
plate SJ The 'clock' dial 28 is secured ‘to the seg_-'
mental part 25 by brackets 29. The said 'con-'
65 ventional mechanism 1 includes a ratchet‘ wheel
2,412,077
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4
30 secured to a hub 3| carried by an arbor l8
clearly in Fig. 8. The clock containing the mech
anism of the present invention is adapted to be
rotatably mounted at one end on a ?xed man
drel 32. The arbor near the other end is jour
nalled in segment 25, passes through an aper
ture in the dial and carries hands 33 of the clock
which are rotated by the mechanism actuated
by rotation of the said ratchet wheel 30 and arbor
l8. The ?xed-mandrel 32 is secured in and
mounted on a yoke which includes the flat strip
operated from any suitable source of current, as
for example, the battery 86. As shown in Fig. 8,
the positive and negative lead wires 8| and 82
from the battery are insulated from the plate 6
(by connection to the binding posts which are in
turn insulated by means of insulation members).
Tracing the course of the current, it passes from
40 supported on and secured to’posts 4|, 42 which 10 the positive terminal of thebattery through the
lead wire 8|, then through the coil 5 surrounding
the core, and from there to the plate 6 through
ment 26.
Intermediate ' between the ratchet
‘the wire 82 and the pin or rivet I3 secured to
wheel 30 and the strip 40, the armature 43 is
rotatably mounted on said mandrel 32. The ar- y , the plate 6 asclearly shown in Fig. '7 and as
indicated in Fig. 8 by the point 83. The plate
mature 43 comprises a ?at strip ofsoft iron hav
'6 is in ele'ctricalconnection with the armature
ing end portions 44, 45 extending transversely
through structural elements, including the posts
thereof and arranged to sweep "over, i. e. to be
' 21, one of which is'shown clearly in Fig. 2, the
brought in closely spaced relation to the corre
segments. 25, 26, the hub 3|, and the mandrel
sponding ends of the pole pieces 3, 4. For this ->
32 on which the armature is rotatably mounted.
purpose the said ends 44, 45 of the armature are
The arm 62 pivotally mounted on thearmature
arcuately shaped to correspond to the comple
43 is also in electrical connection with'the latter,
mentary shape of the pole pieces 3, 4.: The arma
this ‘electrical connection being further facili-v
ture 4,3 is therefore adapted to rotate'about an
tated by the coil spring 63. Therefore, the piv-'
axis perpendicular to the plate 6 and perpendicu
oted arm 62 and the pin extension 13 thereof are
lar to the longitudinal axis of the electromagnet.
in electrical connection; with, the plate 6 and,
The rotational axis of the armature passing
therefore the coil 2. In;Eig._8-this electrical con
through the mid point of the electromagnetv and
nection between the plate and the pivoted arm“
being transverse to the longitudinal axis of said
is diagrammatically-shown by the leadwire 84.:
armature. The latter axis lies in a plane parallel
No such lead wirev is ;_however necessary. in the
to the plane containing the longitudinal axis of
practical construction of the mechanism. Trac
the electromagnet. To the armature and inter
in turn are mounted on and secured to the‘ seg
mediate the axis cf rotation and one end of said
armature,thereis secured one end of the spring
ing the course of the currentstill further and
assuming contact between the pins 2!),v and;,.13, the.
current then passes from the_-1pin_13,to,j»the pin
of the spring being secured to an extension 52 of 35 20 and then through the lead wire 82 back to the;
negative terminal of-the battery; 1; To protectthe
the yoke piece or strip by meansof the pin 53.
entire mechanism against excessive current ‘uh?
Near the ends of the armature ‘43 and pivoted
plate 6 may be grounded as shown.
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thereon by the pins 54. are the pawls 55, 56 ar
In the operation of the devicegand ‘assuming
ranged to engage the ratchet wheel 30, these
pawls being biased by spring members 51. one J 40 that the armature has been rotatedclockwise by
56 by means of apin oririvet 5|, the other-end
end of each spring is inserted ‘in a hole andthen .
- tension on. the spring 50 as ;far as; the armature‘;
will go, e. g. against postj66, thisrotation of the
armature (note Fig. 1) moves the pivoted arm;
62 into a position WhEI‘BTthQCOX'itaG/t pins;'|3,'20»
On the sideof the armature opposite theside
to‘ which the spring is attached, theregisxpro-i - are brought into engagement. (Note Fig.1).
The electrical circuit is then. closed and the'elec
vided an extension or lug 60 carrying a pivot pin‘~
tromag-net l energized; A pull is then exerted on
6| extending transversely to said extension. On
, the armature .43 tending “to rotate, it counter:v
this pivot pin 6| an arm 62 is pivotally mounted
clockwise and this pull exerts its e?ect as long
and, is biased to occupy the positions shown in
as the said pins 13, 20 are in contact. Aspre»
Figs. 3 and 4 by means of a' coil spring 63, aided
viously stated and as clearly shown; theia‘xes ‘of ,
by spring 61, one end of which is secured to the
lug 60, the other end bearing against a portion" these two pins are at right angles. When the.
armature‘ is in its ultimate position of, movement
64 of the arm bent at right angles, said bent por
in a clock-wise direction the end of the pin 13'
tion being adapted to ‘engage the armature 43
extends a substantial distance beyond theaxis
at one position’ of movement of said pivoted arm.
bent around a ‘post 59 and into engagement with
its'pawl.
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The said pivoted arm carries a soft iron shoe por
tion 65 which is arranged to cooperate with a
strip 10 constituting an extension of the pole
piece 3 and secured thereto by means of screws
1| .
The'pivoted arm may be as shown, a flat
strip from ‘which'the shoe portion 65 extends
transversely._ The arm as. shown in the draw
ings terminates in a portion 12 which extends
transversely both to the. plane of the arm and
of the pin 20. In the counter-clockwise‘ move
ment of the armature the pin 13 is drawntrans-z
versely across the pin 20 by the rotation of the lug
60 on which the pivotedarm 62 is mounted, this
lug 60 having an offset position in relation‘ to‘ the.
axis about which the armature 43 rotates. The
electrical connection is not'ibroken until .there is.
a complete disengagement of the pin 13 from
the pin 20, which requires an appreciableinterva-l'
and provides for movement‘ of the ‘armature 'to
its ultimate counter-clockwise position,.._during
which movement the spring is. fully tensioned.
a pin made of pure silver. It is this movable‘
There is thereforezan appreciable time of contact"
pin .13‘ which cooperates with the ?xed pin 20,
of the pins inmoving electrical contact with each
said pinsconstituting the electrical contact or
make and break elements. As shown clearly in 70 other. Stated otherwise, the electrical. contact
is preserved until the clock is fullywoundrup; A
thevarious views, including particularly Fig. 9,
sudden make and break would‘ not accomplish
the axes-of thepins 20 and 13 are at right angles '
also to the planeof'the ?at shoe 65 and from
that terminal portion of the arm, there extends
for purposes which will be more fully hereinafter
this purpose and would only partially, tension :the .
described.v
spring and thus develop correspondingly less;
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.The electrical circuit connections are shown 75 energy for driving the clock operatingi,mecha
2,412,077
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nism.
6
By the means described», a maximum
‘Referring'to Figs. 10, .11, and 13,-the-armature
amount of energy. in the springis developed with
a correspondingincrease in the time required‘to
exhaust that'energy. Thus the period of time
'43 is. rotatably mounted on ?xed mandrel 32se
cured in strip 40 supported-by posts M, 42. On
this mandrel is’ also rotatably mounted ratchet
during which the clock “runs down” is length
ened‘and’the totalinumb'er of breaks in'the elec
wheel 30 secured to; arbor I8’ which is‘ suitably
journalled as insegment ~ 25. The rotation of~the
trical circuit‘ iii any. given'time- interval are re
ratchet-wheel and‘arbor actuatesthe clock mech
anism andythe indicatingv hands 33 mountedlon
the arbor at one. end'thereoi. The armature 43
has a housingv portion I09 within which. coiled
main spring H0 is located securedby pinwIII to
ducedr Furthermore, by making the pins of pure
silver, the formation of insulating coatings or
scale is‘prevented and there is always a substan
tially perfect'contact' of’metallic silver to metallic
silver, thus establishing. certainty of operation.
said housing at one endand secured to the ?xed
mandrel 32 at the other end- I ‘I2! thereof. An
' The maintenahce‘of thepins "I3 and 20 (which
constitute the control switch) in contact during
the counter'lclockw'iselmovement' of- the armature
43 is‘facilita'ted b'y'strip‘ 10 which concentrates
the 'ma'giietic'?ux" and" cooperates with the ,ma'gL
netic‘shoe member 55.
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auxiliaryhousing I I3'securedto the strip 40 fur.
15,
ther encloses said spring I I0..
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On thearmature 43ipaw1s. 55, 59 are pivoted.
onpins 54 and biased by. coilfsprings I20.
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The operation of the mechanism described-?n
‘ When the spring is‘ fully ten'sioned, the‘ con
Figs. 10 to 17 inclusive will now. be. described.
tacts 20, ‘I3 are separated, this‘ separation being 20 Assume that the mechanism is in the “run down!’
facilitated by the coil spring '63 which biases the
condition as shown by’ the position of- the arma
pivoted arm 62 (note Figs. 3 and 4) to separate
swung
ture
43in
so that
Fig. theU-shaped.
10. This causesthe
switch arm-62?
membertoI02
said contacts; tension, on the spring 50 then
causes clockwise rotation of the armature, this
bridges the contacts 98’, 99 thereby establishing a
rotation being transmitted‘to the ratchet wheel 25 closed‘. electrical circuit from the battery through
30 and thence to the hands of the clock by means
of the pawls 55, 56'. During tensioning of the
spring and counter-clockwise rotation of the ar
mature, tension to ‘drive the ratchet wheel is main
tained by a coil spring (not ‘shown in the draw
ings) located within the drum 3I'.
'
Figs. 10 to 16 show a modi?ed form of them
vention. The electromagnet I is mounted on a
base 90 of insulating‘ material having apertures
through which binding‘ posts 8 and 2I' pass se—‘
" the coil to around the electromagnetv I.
The
energized electromagnet then causes rotationlof
the armature 43 in a counter-clockwise direction.
During this movement the electrical circuit~.- is
maintained in, closed position or condition as‘ long
’ as the U-shaped switch member I02 bridges the
contacts 98-, 99. The time of circuit closing that
is» duration thereof. is controlled by- the‘ length
of» the contacts or. bars‘: 98,99 and. the- extent-to
which the legs of the. U-shaped member I02
cured to said base‘ by nuts "9 I, 92 with which nuts
extend beyond said contacts. 98, 99v ‘(note Figs.f11
93', 94 cooperate to secure lead'wires' from the
and 13) and the structure. of the part issarranged
battery 80. ‘One end ofthe coil 2 is soldered or
inthe manner taught herein so-that the circuit
brazed to’ binding post 8., The-‘other end is con
shall remain closed until, by rotationof the arma
nected to switch 95 shown diagrammatically and‘ 40 ture. the main spring of the mechanismis fully.
in perspective in Fig. 16. This switch?comprises
wound up and acquires su?icient energy .tolopera
an insulating member 96 supported on a bracket , ate the vmechanism during a light substantial
9‘! secured to binding post, 2|. The insulating
member 96‘insula'tes two small bars or strips 98,
intervalfof time in order. to reduceto ami’nimum
the total number of makes and breaks occurring
99 (note‘Fig. 17) from each,’ other except when‘ ~- during the life of the mechanism. The magni
they are placed in electrical communication by
means to be described.
The strips 98, 99 are
made of pure silver. Strip 98' is brazed to the
bracket 91 which may be brass or bronze. Strip
99, is connected to bar 99A which‘ in turn is con
nected to bracket99B’secured to ‘base 90. by screw‘
990. To bracket 99B is secured one end of coil
5 and insulating member 96 is secured between
brackets 91 and 99B and insulates these‘ from
each other. The other part of the switch com
prises two cooperating bars I00, IOI of pure silver
brazed to an elongated U-shaped member I02
which may be made of Phosphor bronze and which
is an extension of the member I03‘ forming a part
tude of energy storedin the main spring _‘II_0,
is dependent onthe angle through which arma
ture 43‘ rotates in a counter-clockwise direction
and the magnitude of’ this angle is in turn depend
, ent on the time during which the electrical cir
cuit remains in a closed position. vThis main
tenance is facilitated-by the member I03 to which
is attached the magneticshoe 65 which cooper
I ates with the extension 10 of the pole piece 13’
pto hold the U-shaped switch member ‘I02 in.
circuit closing vposition until the armature 4,3v
is fully rotated through its predetermined angle‘
of rotation in order to fully wind the main spring.
H0. At the end of the movement of the arma
of arm 62. The latter is pivoted by means of (so ture'in a counter-clockwise position it. is neces
pivot pin 6| on a- bracket I04 secured to armature
sary that the. circuit be immediately broken and
43 by rivet I05. Arm 62 is biased by coil spring
to facilitate this action coil- spring 63 is pro
63 mounted on pivot pin 6| one end of said spring
vided to throw the .arm 62 away from the con
being secured to bracket I04 and the other end
tact 98, 99. The non-magnetic strip I08-provides
‘to arm 62. Arm’6'2 has'a lug I06 adapted to en
su?icient air gap between'magnetic shoe 65 and
gage bracket I04 which acts as a stop and limits
the extension ‘I0 of pole piece 3 to- prevent freez
movement of said arm 62 in one direction. The‘
ing ofthe part by‘ residual magnetism remain-'
member I03 is a strip which may be made“ of
ing after‘ the circuit is‘ broken;v When the coil
Phosphor bronze'and is stiffened by upstanding
spring or main spring H0 is fully stressed‘ by
edge portions II". On its under side said strip
counter-clockwise rotation of the armature 43,v
carries a soft iron magnetic shoe 65 cooperating
and the circuit is broken,,the energy in said spring,‘
with strip 10' constituting an extension of‘ pole
then causes operation of the clock mechanism by'
piece 3. To the shoe 65 there is attached a non
causing rotation of said armature in a clock-_'
magnetic strip I08 which acts to provide spacing
wise direction this rotation being communicated
between strip 10 and the magnetic shoe piece 65.:
to the ratchet wheel '30’ by the pawls . 55,. 5Ii._~
2,412,077
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During'winding of the main spring H0, rotation
ofw'the ratchet wheel is maintained by a main
engagement with=thenxedcontact during coun
terclockwise movement of said armature and
taining spring located within hub 3|, this main
taining spring not being speci?cally shown.
qReferringto Fig. 18, Hi indicates a tube which
maybe made of glass secured to the armature
whereby‘v the switch is maintained in a closed
43 and having terminals or electrodes sealed into
one end thereof, these terminals being connected
to ‘lead wires. This tube is a part of an elec
end of said longitudinal movement.
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v 2. In apparatus of the character described, in
condition during contact oi said elongated bar
with the _?xed contact and opened by disengage
ment of the movable bar ‘and ?xed ‘contact at the
combination an electromagnet having a longitu
trical; circuit including the battery and the elec 10 dinal axis and a'pair of poles, an elongated arma
ture pivoted to rotate about ‘an axis passing
tromagnet shown in Figs. 8 and 16 for example.
through themid-point of the electromagnet and
That is to say, thewtube l2l with its electrodes
perpendicular to the axisv thereof, said armature
constitutes a switch which is a part of that elec
havinga longitudinal axis perpendicular to its
trical circuit. The tube contains a globule of
mercury which causes closing of the switch when 15 rotational axis,.said longitudinal axis lying in
a plane parallel to the plane containing the longi
the‘ tube is tilted into the position shown. The
armature 43 and the electromagnet I are so ar
ranged that the vswitch IZI occupies the circuit
closing position shown in Fig. 18 when the main
spring H0 is run down. Thereupon the closing 20
of the circuit energizes the electromagnet, ro- ,
tates the armature 43 into the position shown in
broken lines in Fig. 18 whereupon the globule
tudinal axis of the electromagnet and said armar
ture having end pieces arranged to sweep over
the pole. pieces of the electromagnet, a spring
biasing said armature to rotate it in clockwise
direction and to thereby operate the clock mecha
nism, said armature being arranged to rotate
through an angle of predetermined magnitude
alternately in a clockwise and counterclockwise
of mercury runs to the other end of the tube and
causes breaking of the circuit. The arrangement 25 direction, the position of the armature at the end
of itsmovement in a clockwise direction corre
shown in Fig. 18 is not claimed herein. It is
di?erent from the switch mechanism described
andclaimed;
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What is claimed is:
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sponding 'to arun down condition of the spring
and the position of the armature at the end
of its counter-clockwisemovement corresponding
1. In apparatus of the character ‘described, in 30 to a fully restressed condition of the spring, a
switch including a .pair of electric contactpins
combination an electromagnet having a longitu
one oi said pins being ?xed and the. other move
dinal' axis and a pair of poles, an elongated arma
able, the axes of said pins, being transversejto
ture pivoted‘ to rotate about an axis passing
through the mid-point of'the electro-magnet and
each‘ other, and means to close said switch at
perpendicular to‘the axis thereof, said armature 35 the end‘of the. clockwise movement ofthe arma
having’a longitudinal axis perpendicular to its
ture, tomaintain said switch’ inwclosed position
rotational axis, said longitudinal axis lying in
duringthe counter-clockwise movement of the
armature and until‘ the spring is fullyrestressed
a’ plane parallel to the plane containing the longi
and then to open said switch, said'means. includ:
tudinal axis'of the electromagnet and said arma-p
ing a pivoton said armature and'an arm piv
ture having end pieces arranged to sweep over the
oted on’ said pivot armature to rotate about an
pole pieces'of the electromagnet, a spring biasing
axis parallel and in spaced relation to“ the axis
said armature to rotate it in clockwise direc
of rotation of said armature, said arm/carrying
tion and to thereby'operate the clockmechanism,
said ‘armature being arranged to rotate through
an angle of predetermined magnitude alternately
said movable contact pin, saidl'armature and
in a clockwise and counter-clockwise direction,
the position of the armature at the end of its
movement in a clockwise direction corresponding
to ‘a’ run down condition of the spring and the
end ‘or the movable‘ pin on said arm to extend
pivoted arm thereon being arranged to cause the
beyond and in contact with the‘ ?xed pin when
the armature is at the end of its clockwisemov'e4
ment and to draw said movable pin across and in
position‘ of the armature at the end of itscountere 50 contact with the ?xed pin during ‘counter4clock-,
wise motion of the armature .andto open said
clockwise movement corresponding to a fully re
stressed condition of the spring, a switch includ
ing a, fixed elongated bar and a movable contact,
and means to close said switch at the end of
the clockwise movement of the armature, to main
tain said switch in closed position during. the
counter-clockwise movement of the armature and
until the spring is fully restressed, said means
including an arm pivoted on said armature to
rotate about an axis parallel and in spaced rela
tion to the rotational axis of said armature and
offset from the longitudinal axis of said armature
said arm carrying said movable bar and being
switch by said drawing movement, thelsaidpivot
moving away from said ?xedcontact during said
counter-clockwise motion.
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3. In apparatus of/the character described, in
combination an electromagnet having a longitui
dinal axis and a pair of poles, an elongated arma-,
ture. pivoted to rotate about an axis passing
through the mid-pointof the electromagnet and
perpendicular to the axis thereof, said" armature
having a longitudinal axis perpendicular to its
rotational axis, said longitudinal axis 'lying‘in a ’
plane parallel to the plane containing the, longi-,
tudinal axis of the electromagnet and said arma
adapted for longitudinal movement in the direc
tion, of the longitudinal axis of said bar; said ‘_ ture having end pieces arranged to sweep over the
pole pieces of the electromagnet, a spring biasing,
?xed contact being adjacent one polev of the
said, armature to rotate it in clockwise direction
magnet which pole is cooperatively arranged in
and to thereby operate the clock mechanism, said
relation to one end of the armature and the
armature being arranged to rotate through .an
axis of rotation of said arm being intermediate
angle of predetermined magnitude alternately in
the rotational axis of the armature and the other '
a clockwise and counter-clockwise direction, the
end thereof, the armature, movable arm. and
position of the armature at the end of its move;
switch members being thereby arranged to effect
ment in a clockwise direction corresponding to'
closing of said switch at the end of the clockwise
a run down condition of thespring'and the posi
movement of the armature and to effect move
tion vof the armature’at the'end of its counter
ment of ‘the movable elongated bar in sliding
2,412,077
10
'clockwisevmovemlent corresponding to a fully re
.stressed condition oflthe, spring, a switch includ
ing. a'?xed contact and a movable contact, and
movement of, said armature, and a magnetic
‘member extending vfrom one pole piece ‘of the
electromagnet. and adapted to concentrate the
means .to close saidj'switch ‘at the end of the, clock
magnetic fluxand a. cooperating magnetic mem
wise movement of the armature, to maintain said
ber‘
carried :by the pivoted arm, tov maintain said
switch in-closed position during the counter
switch in closed-condition by maintaining ‘said
clockwise movementof thev armature and until
sliding engagement during counter-clockwise
vthe spring is fully restressed, said means includ
‘movement of said armature. '
'
‘
ing an arm pivoted onsaid armature to rotate
5..
Inapparatus
of
the
character
described,
about an axis'parallel and inspaced relation to 10 oombinationan electromagnet having a longituin
the rotational axis .of,,said_,ar'mature and offset
dinalpaxis and a pair of, poles, an elongated arma
from the longitudinal axis of said armature said
ture pivoted to rotate about an axis passing
arm carrying said movable contact; said ?xed . throughv the mid-point of the electromagnet and
contact being adjacentone pole of the magnet
perpendicular to the axis thereof, said armature
which pole is cooperatively, arranged in relation 15 having‘ a, longitudinal axis perpendicular to its
to one end .of the armature and the axis of rota
rotational axis, said longitudinal axis lying in
tion of said armbeingintermediate- the rotational
a plane parallel to‘ thevplane containing the
axis of the-armature and the other end thereof,
longitudinal axis of the electromagnet and
the armature, movable armand switch members
said armature having end pieces arranged to
being thereby arrangedtoleifect closing of said 20 sweep over the pole pieces of the electromagnet,
switch at the end of the clockwise movementof
a spring biasing said armature to rotate it in
the armature and to effectrnovement of the move
clockwise direction and to thereby operate the
able contact in sliding engagement with the ?xed
clock mechanism, said armature being arranged
contact during counter-clockwise movement of
to rotate through an angle of predetermined mag
said. armature; and cooperating magnetic ele 25 nitude alternately in a clockwise and counter
ments on said pivoted arm and electromagnet
clockwise direction, the position'of the. armature
respectively, to maintain said switch in closed
at
the end ofits movement in a clockwisedirec
condition by maintaining said sliding engage
tion corresponding ,to a, run down condition of
ment during counter-clockwise‘movement of, said >_ the springand the position of the armatureat
armature.
80 the endlof its counter-clockwise movement corre
4. Inapparatusof the character described, in
sponding to a'fully restressed condition of the
combination an electromagnet having a longitu
spring, a switch including a ?xed contact andpa
dinal axis and apair of poles, an elongated arma
movable contact, andmeans to close said switch
ture pivoted to rotate about an ‘axis passing i at
the end of the clockwise movement of the
through the mid-point of the electromagnet and 35 armature, to maintain said switch in. closed posi-v
perpendicular to the axis’ thereof, said armature
tion during the counter-clockwise movement of
having a longitudinal axis perpendicular to its
rotational axis, said ‘longitudinal axis lying in a
planerparallel to the planecontaining the longi
tudinal axis of the electromagnet and said arma
ture having endcpieces arranged to sweep over
the ;pole pieces of the electromagnet, a spring
the armature anduntil the spring is fully re
stressed and then to open said switch said means
includingv anarm pivoted on said armature to
rotate about anaxis parallel and in spaced rela
tion to the rotational axis of said armature and
offset from the longitudinal axis of, said arma
biasing said armatureto‘rotate it in clockwise
ture saidv arm carrying said movable contact;
directionand to thereby operate the clock mech
said ?xed contact being adjacent one pole, of the
anismrsaid armature. being arranged ,to rotate 45 magnet which pole is cooperatively arranged in
throughlan, angle of predetermined magnitude
alternately in a clockwise and counter-clockwise
direction, the position of the, armature at the end
of~itsmovement in‘ a clockwise direction corre;
relation to one‘ end of the armaturev and theaxis
of rotation of said arm being intermediate the
'rotationalaxis of the. armature and the other
1 end‘ thereof, the armature, ‘movable arm and
sponding to. a .run down condition‘of thespring 50 switch members being thereby arranged to, effect
and the .positionof the armature at .thesend of
closing of said switch at the endof the clock
its counter-clockwise movement corresponding to
wise movement of thearmature and to e?ect
a fully restressed condition of the spring, a switch
movement of the movable contact insliding en
includinga'?xed. contact and ‘a movable contact, _ gagement with the ?xed contact during counter‘
and means'to close said switch at the end of the 55 clockwisemovement ofsaid armature; and co
clockwise movement .of the, armature, to , main
tainsaid switchin closed position, during the
counter-clockwise movement of the armature. and
operating magneticv elements on said' pivoted arm
and electromagnet respectivelyhto maintain, said
switchin closed condition?by maintaining said
until the, spring is fullygrestressed, said ,means , sliding engagement during counter-clockwise
including. an arm- pivoted on said armature ‘to 60 movement of. said armature and aspring biasing
rotateI’about an axisparallel andyin spacedv rela
tion to the rotational axis of ‘said armature, and
oiTset-fromthe longitudinal axis. ofs'aid armature
1 said pivoted armto open said switchyatthe end
01 said counter-clockwise__movement.
_
v
6. In’, apparatusof the characterdescribed, in
combination an electromagnet, having av longitu-r
dinal axis and a pair _of.pole's, an elongated arma
said- arm-carrying-said movable contact; said
?xed contact being adjacent one pole of the mag
net which pole is cooperatively, arranged in rela
ture pivoted to rotate “about an axis passing
tion to one endtof the’armatu're and the axis of
through the mid-point of the electromagnet and
rotation of said armbeing intermediate therota
' perpendicular tothev axis thereof, said armature
tional axis of the , armature and the. other .end v; havinga longitudinal axis, perpendicular toits
thereofgthearmature, movable arm and switch 70 rotational axishsaidv longitudinal axis lying, in, a
members-‘being thereby arranged to, effectclosing.
of said switch‘ at the ‘end of-the- clockwise‘mov'e
ment of the armature and to effect movement
of the movable contact-fin ‘sliding engagement
with the ?xed contact during counter-clockwise
plane. parallel tolthe vplane containing the longi
tudinal axis of the. electromagnet and said arma
ture having. end pieces. arranged to, sweep‘over
_‘ therpole. pieces-of the‘ electromagnet, a. spring
5 biasing said armature to rotate it in vclockwise
324.1310”
11
12’
an arm pivoted on said pivot to rotate about an
direction‘and to thereby operate the clock ,mech
‘anism, said armature being arranged 'to‘ro‘tate
through an angle "of' predetermined magnitude
of rotation of said armature said arm‘ carrying
alternately in a clockwise and counter-clockwise
‘oted arm thereon being arranged to cause ‘the
axisparallel an'd'in spaced relation, to the axis
said movable contact pin, said armature and piv
direction, the position of the ‘ armature at the
end of the movable‘pin. on said arm to extend
end of its movement in a clockwise direction cor
responding to a run down condition ‘of the spring
and‘ the position of the armature at the end of
beyond and in contact with the ?xed pin when
the armature is at the end of its clockwise‘move
ment and to draw said movable pin across‘ and
its counter-clockwise movement corresponding to
in contact with‘the ?xed pin during counter
10
a fully restressed condition of the spring, a switch
clockwise motion of vthe armature, the said pivot
including a ?xed contact and a movable contact,
and means to close said switch at the end of the
moving away from said ?xed contact during said
counter-clockwise
clockwise movement of the armature, to maintain
said switch in closed position during the counter
clockwise movement of the armature and until
'
'
‘
ture' pivoted to ‘rotate about an axis ‘passing
said switch said means including an arm pivoted
on said armature to rotate about an axis parallel
through the mid-pointer the electromagnetfand
perpendicularjto the axis thereof, said armature
having a longitudinal axis perpendicular to’its
and in spaced relation to, the rotational axis of
said armature and. offset from the longitudinal
‘axis of said armature said arm‘carrying said mov- ‘ ‘
" rotational axis, said longitudinal axis lying in ,a
plane parallel to the plane containingpthe longie
able contact; said ?xed contact being adjacent
‘one pole ‘of the magnet which pole is cooperatively
and ‘the axis of rotation‘of said arm being ‘inter
‘
dinal axis and a pair of poles, an elongated arma
the spring is fully restressed andvthen to open
arrangedin relation to,on‘e,,end of the armature
motion.
8. In apparatus vof the character described, in
combination an electromagnet having a longitu
tudinal axis of the electromagnet and said arma
ture having end pieces arranged to sweep‘ over
the pole pieces of the electromagnet, ajspring
biasing said armature to rotate it in ‘clockwise
:25.
mediate the rotational axis of the armature and ‘ ‘
direction and to thereby operate the clock mech
the, other end thereof, the armature, movable
anism, saidv armature being arranged to rotate
arm and switch members being thereby arranged
through an angle of predetermined magnitude
to e?ect closing of said switch at the end of the
alternately in a clockwise and counter-clockwise
clockwise movement of the armature and to- effect 30‘ direction, the position of the armature‘ at the
movement of the movable contact in sliding en
end of its movement in a‘ clockwise direction
gagement with the?xed contact during counter
corresponding to a rundown condition of the
clockwise‘ movement of said armature, and a mag
spring and the position of the armature, at the
end of its counter-clockwise movement corre
netic member extending from one pole piece of .
the electromagnet and adapted to concentrate
the-magnetic ?ux andja cooperating magnetic
member carried by the pivoted arm, to maintain
said switch in closed condition by maintaining
said sliding engagement during counter-clockwise
'
to a fully restressed condition of the
spring,v a switch including ‘a ?xed contact and a
sponding
movable contact, and means to close said switch
at the end‘ of the clockwise movement of the
armature, to ‘maintain said switch in closed posi
tion during the counter-clockwise movement of
movement of said armature and a spring biasing
said pivoted armto opensaid switch at the end
of,v said counter-clockwise movement.
_
the armature and until the spring is fully re
stressed, said means including an arm pivoted
,
7. In apparatus of the character described, in
combination an electromagnet having a longitu
dinal'axis and a pairof poles, an elongated arma
on-saidarmat'ure‘to rotate about an axis parallel
MP 5 and‘in spaced relation tothe rotational axis of
said armature andnoffsetf'romfthe longitudinal
ture‘ pivoted ,tofrotate about an axis, passingv
axis of said armature said arm carrying said mov
through’ the midpointof the electromagnet and
able contact; vsaid?xed contact being adjacent
perpendicular tofthe axis thereof, said armature
one, pole of, the magnet which poleis coopera-v
having‘ a longitudinal axis perpendicular _to‘-its
rotational axis, said longitudinal axis lying in 7a, 5 tively arranged: in relation, to one’ end of ‘the
' armature and the axisof rotationof said arm
plane parallel to the plane containing thelongi
being. intermediate the’ rotational axis of the
tudinal axis of the electromagnet and said arma-,
armature andithe other end thereof, the arma-_
ture having‘ end‘ pieces arrangedto sweep over,
ture, movable arm and". switch _members_, being
the pole pieces, of the electromagnet, a spring
thereby. arranged to efiect'closi'ngrof said switch‘
biasing saidarmatureto rotate it in, clockwise
direction and to thereby operate the clock mech
at the end of, the clockwise movement of the
armature and to effect movement of the movable
contact in sliding engagement with the ?xed
anism, said armature being arranged to rotate
through an angle ,of predetermined magnitude
alternately in a clockwise andcounter-clockwise
direction,‘ the position of the armature at the end
contact?during counter-clockwise movement of
,69' said
armature, and a magnetic member extend;v
ing fromone- pole piece ‘of the electromagnet and
of its movement in a clockwise‘ ‘direction corre
adapted to concentrate the magnetic flux and ‘a,
sponding to a run down conditionlof the spring
cooperating ‘magnetic memberijcarried' by‘ the
andthe position of the armature at the end of
pivoted arm, to maintain said switch in closed:
its counter-clockwise movement corresponding to
condition by maintaining said sliding engage
of the spring, a switch ‘
a fully restressed condition
including a, pair, of electric contact pins made of
' ment during counter-clockwisemovement of said
pure silverroneto-f saidpins being ?xed and the
of metallic bars insulated from each other; and
the movab1e__contactjcomprising an elongated,
armature,,said ?xed contact; comprising a pair
other, movable‘, the axes of said pins being, trans
verse, to each “other, and meansv to close said
switch atthe endof the clockwise movement of
the armature, to maintain said switch in closed
U,-shaped metallic member adapted to "bridge
" said?xd' contactsiat‘the endof said clockwise
position during the counter-clockwise movement
of the armature and until thespring is fully
restressed and then to open said switch, said
means.’ including a pivot onxsaidarmature and 15
movement and to remain in slidin‘g'en'gagement‘
therewith during said‘ counter-‘clockwise; move;
ment.
7
V
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