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Патент USA US2509873

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May 30, 1950
Filed May 12, 1948
5 Shee'ts-Sheet l
F16. l.
May 30, 1950 ,
5 Sheets-Sheet 2
Filed May 12, 1948
‘May 30, 1950
Filed May 12, 1948
5 Sheets-Sheet 3
“734 M
May 30, 1950
Filed May 12. 1948
5 Sheets-Sheet 4
May 30, 1950
Filed May 12, 1948
5 Sheets-Shea‘:a 5 -
Patented May 30, 1950
Fritz vLoef?er, New, York, N."Y;; assignor to Lador, > _,
Inc., New v‘York, N; Y., a corporation of ‘ New“ >
Application May1'12, 1948, SeriaLNo. 26,692.. 7
14 Claims.
(Cl;- '58'—-12‘)
This‘ inyentiOn.,has__ to .do ,with improvements
7 is a front View, of the assembledcloek;
Fig: B'is a cross section .on the. line. 8—8. of
inucloclgmechanisms land moreparticularly with
Figi'l'; and.
clocks havinga music. rollas, an alarm. .
Music rolls asv such are well known articles_,_of
commerce and have previously. been useduto ,a
Fig.9 is a. plan-view .of thespaeer. separating
limited‘ .extent- in__-comb_ination with mechanical
(spring). operated. alarm. clocks.’ Usually. in
the sfrontiplaterand clock- dial. . .
The I; clock mechanism - or.’ ;works,-_ resting-on .-a
base}! ‘(jFig';-..1) may be insertedrasa unitrintoyan
these_.clo.cks.,there had __.been_ separate . and indew
Opening: in: the :bottom .;of- ‘an .~_ outside housing ;_I 0:
pendentdriving'means, e. g. springs, for the clock
A leafspringzllisecuredltoszpostv IZ‘by screw ,l3
and the. music roll sothat two hand winding, oper ll)
presses. against; the back .sideiof . housing. It and
ations . Another shortcome
ingpf. these clocks. wasgthatgthe. operation of the
music roll.,cou1d_.not be-sufficientlyv well .con
prevents ratt1ing~ofrthe~unit.1- A crystal I4 is held
in place. by bezel‘ l5 against~the edges'of another‘
clock mechanism as well as the music .vroll. . The
nating ‘current synchronous vtype ‘which is secured
suitable: 'opening¢_in-'- the side; of ’ the ‘housing; >
Accordingto my invention .a single motordriv 15 Theclock mechanismds'driven by a-constant
speed elect'ricmotor l6; preferablyqotthe alter
ing, means,V,e,-g. an electric'motor, operates the
present,.i,de_vicetherefore combines the advantages.
by screwslnot. shown) to back platel?S. _ The,op~_
attendant... clock with those I. of .a.
eration of the. mechanism about to‘, be described
clockhaving a musierrollalarm. .
is used to reduce the normal speed of 'themotor to‘
Operate the secondstminutes’ andhoursi gears of‘
the ‘clock;,‘_
The’rnotor shaitinotshown) of motor l?cars
According- to ‘a feature of‘ my. invention I pro~
videa snapacting device which abruptly disen
gages themusic rollirom its driving-mechanism
to insure abrupt stopping .of the .roll.. ,. In. this way
ries apinion.23i-Whichiengasesa shaftlgear. 24
it is possible accurately .to .controlithe operation
of.,the,.music rollfor- a predetermined periodof
mountedwith a pinion 2.5..ona shaft 25; . Pinion
25"drives a shaft gear, 21 'mountedwith a pinion
According to another feature of myinvention,
I providea secondmore penetrating alarm, like.
a bell, which may be selectively‘connectedito oper:v
drives a shaft,,eeer.._33.;mqunted witna pinion. 34.
onicentensnaft 35‘; ‘j A sweeping. second hand. .31"
ateaftenthe music ,.roll has been stopped.‘
is mounted onthe outer end‘ of. shaft '35.. .' Pinion
Still another feature, of. my invention‘ is that I
provide a .combinationhour. hand-and alarm
A~ pinion 39"‘ \(Fig; 2) forming part ofshaft 39.;en1
34‘drives _a gear. _38_mou_nt_e_d on a pinion shaftltg.
marker ontheface ofthe clock. , Usually asepa
gagesa gear .40 ‘i which. .is frictionally. held.v by. a
ratejindicatoris necessary tov mark the timeat
which ‘it is desired for'the alarmtooperate. I'
shrine washer .4 Lite a minute hub. 4.2.;and. amnion.
43"‘pressed on hub 42.‘ Minute hub_4l2 ,carriesat.
its Outenenda minutehandsli. . Pinion sten
providein addition to thecustomary. ?xed hour
dial, an,._adjustable,alarm dial rotating with the
gagesg a gear, 45.; mounted .ona pinion. ‘it which
turns loosely on ‘pinionshaftutliin Aocollar. 41»
hour gear. ., The alarm time. is setby rotating the.
adjustable‘ dial ‘into alignment with a marker 40 positions piniond?onpinionshaftl?s so that it
drives;v a searr?imounted. adjacent. an. end.- of
provided on the hour hand.
For a more complete understanding of myyin
hourjhand hubuj?'. JI-Iub. 49" carries_at._its outer
vention.referencehshouldjbe had to the following.
description considered. in connection with the
end an hour hand 59.; An alarm gearjl (Fig.
3)"isymounted"on' alarm yhub_52; 3 Alarm, cam‘, 53,
In;_the drawings’:
Fig. 1 is a side elevationwith the outside hous
Fig; 2 is a section of the line 2—2 of Fig. _6_;
Fig. 3 is a section on line _3-—3 of Fig. 6; .
Figs. 4, 4a, 4b and- 4c are schematic diagrams
showing-the operation of the cam followers and‘
the release‘ lever mechanism;
loosely-mounted on’ 1111101918 coupled to alarm
gear 5|" D0sts_,54." Onv the outer end of. alarm
hub “52- arr-adjustable alarm dial 5a is mounted‘
sojgthat it will rotate-with?the hub 52' but‘
displaced with respect thereto. A spring washer.
50 55 is mountedbetween a-?ange56‘ of hub 52' and
a ?ange'Y'B’I-"of hour; hand hub‘49: Spring ‘55'
presses ~?angej5’l‘against/alarm cam 53 thereby
causinggparts 48,49, 53-, v5l;'52“to operate in
umson.Fig; 5 is a section ‘on the line 5-5 of Fig; 6;
Fig. 6 is a front elevation of the clock with the; 55 'With theaidéof Figs. 4-40 the operation ofthe
device controlling the engagementofthe' music
front~~housing, dials and front plate-removed; -'
Fig. 4c shows cam follower 6| just after it has
alarm to the rest of the clock mechanism will be
explained. A release lever 62 positioned between
alarm gear 5! and alarm cam ‘53 is pivota1ly
mounted On a shaft 63. A coiled spring 64, one
end of which is fastened to one of posts 54, tends
to hold lever 62 in inactive position (Fig. 4)
pressing the lever’s end 65 against flange 56.
been lifted out of the cut out and as alarm cam
59 continues to rotate, the follower slides around
cam 53 until it can once again enter the cut out
portion, e. g. 12 hours later.
A second and more penetrating alarm, such as
a bell 95, (Fig. 1) is mounted on post I2 by spacer
85 and plate 86. The alarm is sounded by means
Alarm cam 53 has a cut out portion whose edges
of an arm 81 which is movably mounted on a
66, 61 are substantially perpendicular to one an
other. Release lever 62 has a radial edge 68 10 cross piece 88 held on pivots 89 between back
plate I8 and front plate I9. Arm 8'! is under
tension from a spring 96 (Fig. 6) fastened to a
post 9I. At the other end of arm 81 an elbow 94
which is slightly displaced with respect to edge
66 of cam 53 and a circular edge 69 in line with
the contour of cammed surface so as substan
tially to cover edge 61 of the cut out when the re
lease lever is in inoperative position.
A locking and follower lever ‘I9 is mounted
projects, on one end of which a striker or ham
mer 95 is provided and from the other end a
cam follower 96 projects, A lug 9‘! projects from
arm 91 between hammer 95 and cam follower 96.
Cam follower 96 rides around alarm cam 53 close
to cam follower 6|. The distance between the
On one end of lever ‘ill a cam follower 6| is
mounted and projects from the lever so as to 20 two cam followers is such that follower 96 can
slide past edge 66 of the alarm cam only after
slide along the cammed surface of cam 53. A
on a hub ‘II (Fig. 3) on a shaft ‘I2 which'is ro
tatably mounted in front and back plates I9, I6.
follower 6| has been lifted into its inoperative
position by the operation of release lever 62. Thus
the music alarm must have sounded and stopped
spring 73, one end of which is attached to a post
id and the other end to arm 15 of lever 19, ex
erts pressure to move cam follower 6| towards
alarm cam 53. The other end of lever ‘10, best 25 before the bell alarm can operate.
'The bell alarm operates in the following man
ner: After follower 96 has dropped into the cut
out portion of alarm cam 53, a projection I00
tatably mounted on shaft l1 and is engaged by
of crosspiece 88 which is connected to spring 90
a gear l9. Gear '59 is mounted on a hub 66 along
with a gear 59 which is driven by gear 39 (Fig. 3). 30 is moved into engagement with the teeth of a
star wheel IIlI which rotates with shaft 26. The
As cam 53 is rotated in clockwise direction,
alternate lifting of arm 8'! by the star wheel and
lever 19 will force follower 6| down edge 66 of
retraction by spring 96 causes hammer 95 to
the cut out portion to the position shown in Fig.
strike bell 85 and produce the conventional ring
4a, whereupon gear ‘178 at the other end of lever
‘i9 is swung downwards into engagement with a 35 ing alarm. As alarm cam 53 continues its rota
tion, cam follower 96 rides up edge 67 of the
gear 89 which is connected to a music roll M
cam and the stroke of arm 81 is gradually di
(Fig. 1) and rotates the latter. The musical
minished until follower 96 again reaches the
sound is produced when comb 82 (Fig. 6) is en
shown in Fig. 5, carries a bushing ‘I6 with a
short shaft ‘H. A gear ‘I8 with a hub ‘I8’ is ro
periphery of cam 53, whereupon projection I09
gaged by pins (not shown) projecting from the
music roll.
40 is disengaged from star wheel II]! by the outward
movement of arm 81. The bell alarm ceases
As cam 53 continues to rotate, cam follower 6|
ringing and will not be operated until the alarm
cam 53 makes another complete rotation, i. e.
after 12 hours have elapsed.
The operation or non-operation of the alarms
rides along edge 61 and engages radial edge 68
of release lever 62 to rotate it about shaft 63
against the pressure of spring 65. When the re
lease lever has been turned to a point greater.
than the friction angle between it and the cam
follow-er, spring 64 will suddenly snap the release
is controlled by a shaft I 64 (Fig. 6) which ex
tends rearwardly through the housing of the clock
cam 62 back to its inactive or normal position,
and on which a disc I95 having a pin I06 pro
causing edge 68 to slide past cam follower 6!.
jecting therethrough is pressed. A lever I01 is
The normal position of release lever 62 is with '
rotatably mounted on hub ‘II and has one end
contacting pin I96 on one side of disc I95. Lever
arm ‘I5 may contact pin I06 on the other side of
disc E65. The other end I96 of lever I9‘! is
adapted to contact projection 91 of arm 91. A
its end 65 contacting ?ange 56. The operation
of lever ‘62 depends on the relative tension of
springs 65 and ‘I3. Springs 13 is more resilient
than spring 6t so that the pressure of spring 13
will be overcome and gear 18 moved out of con
tact with gear 89.
‘Cam follower 6| rides along curved edge 69 of
55 spring H9 anchored to post "I4 tends to hold
lever IEl‘I against pin E66.
Depending on how pin I66 is set (by turning
shaft E66) the ‘music alarm will operate (posi
tion M), the music alarm and then the bell will
release cam 62 and the cammed surface of 53.
When cam follower 6| is lifted out of the cut out
portion of cam 53, lever ‘I0 is suddenly swung up 60 operate (position M+B) , or both alarms will be
silent (position S).
so that gear 18 abruptly breaks with music roll
gear 89, thus stopping the playing of the music.
As distinguished from the usual gradual dis
In position M, the bell alarm cannot operate
because lever Hill is held by spring I I 0 against pin
engagement between an alarm and its driving
I66 so that upper end I66 of lever i0‘! rests
source, I break the connection between music roll 65 against lug 91 and prevents cam follower 96 from
sliding down edge 66 of alarm cam 53. How
gear 69 and gear 18 by means of release lever 62
so fast that music roll 8| comes to a stop almost
ever, lever arm 'l5 is free of the pin and since
instantaneously upon the operation of lever 62.
lever 19 can still move the music alarm will
The importance of the abrupt disengagement is
that the music roll is stopped dead and not gradu
ally. In this connection I have found that in
If pin I66 is turned counterclockwise to posi
tion M-l-B, both the music and bell alarms will
operate because lever I61 is rotated about hub
‘II and is pressed by spring H9 against pin I96
so as to raise end I 98, as indicated‘ in dotted
certain cases where the music roll has a great
deal of inertia the application of a suitable brake‘
to the roll will prevent any unwanted move
ments therein.
75 lines Fig. 6, out of engagement with projection
91:» Cam follower ;9£.»may then drop past edge 66
departing from the scope: of ,my' inventionaas .set
forth in the. appended claims..
What is claimed-is:
andoperate-the bell alarmas above described.
Since;the_movem_ent of lever v‘IE! is not in?uenced.
by_~_this1position>of:pin =I06~,~the music alarm will
operate as- before;
If vpin I08'is vmoved clockwise to the position
S neither alarm-Willoperate because end i013 of
lever, IU'If holds. out the bell alarm‘ as above de
scribed. Pin I ?talso engages lever- arm- 75 pre
venting,-lever;;l0 from rotating and cam follower
6I~- entering, the cut out. The'music alarm:is
therebyzheld out. A ?at-springQB (Fig. 6) suit
ably‘fastened to :front; plate I9 may conveniently
be: arranged to have a nub in one end register
with .notches indisc I05 ‘which correspond to
positionsM, MrliB, S. Thedisc is thereby kept
fromrotating against thepressure of springs ‘I3
1. .A ‘clock comprising. a clock mechanism, a
music-roll, anda singledriving means connected‘
with the clock mechanism for driving it and con
nectable to drive the music roll, coupling means
for operatively connecting the music roll to said
driving means, and means operableat predeter
mined times vby the clock mechanism foractuat
ing the coupling means.
2.’ Aclock
roll, a comprising
single driving.
a clock
for driving
both' the clock mechanism and the music roll,
means for operatively, connecting the. music roll
with said drivingmeans and meansincluding a
spring and lever means for. controllingthe con—
nection between said’driving means andv roll.
3. In. combination with a clock mechanism, a
Thesetting of the alarmsis controlled by a
shaft-H4‘. (Fig. l) which extends through the rear 20 constant speed motor for driving said mecha~
nism,..a music roll alarnrmeans for operatively
of1the';..housing. At the' front end of shaft IE4
connecting the music roll with said motor, and
a gear.-. I i5 is mounted; and meshes witna. gear.
lever means for abruptlyv making and breaking
II?zrotatably-mounted'on a stud HT. Gear H6
the connection between the motor and music roll.
engagesgear 5I.»which controls the rotation of
4. The device according to claim- 3,.a second
alarmrcamz53 and alarm dial 58. By overcoming
alarm and means for operatively connecting said
thefriction of .spring'5‘5i against the parts mount»
second alarm with said motor.
ed on hubs 49 and 52?,2-ithe alarm. dial can be
5. The device accordingto claim 4, and means
rotated, and aligned with. inner pointer H9 of
for connecting said second alarm after-the breaks
hour-whand 50 "(Fig. 7). The novel construc
tionof hour hand-50f enables it to serve a dual 30 ing of the connection with‘ the music roll.
6. In an alarm clock. housing, clock works, an
purpose—toxindicate.; the .hour of the day as Well
alternating current. motor for driving said; works,
as the time to‘which the alarm is set. Hand. 58
a music roll, means for : operatively connecting
is formed intermediate its ends into a ring H8.
said roll to the motor, va camhaving a follower.
Within this ring small pointer I I9 may be aligned
with suitable numbers on the adjustable alarm 85 controlling the operativeconnection of the motor
to-the music roll,. and a spring operated release‘
dial. Outer pointer I29 indicates the hours of
lever for. movingthe cam follower With respect
the day in the usual manner.
to .the cam to disconnect abruptly the motor from
The hands of the clock are set by rotation
themusic roll. .
of a ‘shaft I22 (Fig. 2) which extends through
'7. :The device accordingto claim 6, and means
the rear ofthe-housing.v When a gear 523 pressed 40
projecting through said'housing for preparing the
on-shaft I22=is rotated the friction'between gear
COIlllliOlzOf. themusic: roll by the cam atr preset
“land-pinion 43> created-by spring washer M is
overcome and the hands moved.
8. The device according to claim '6, a'bell alarm,
The music- roll 8 I is supported in a frame I24 by
an armextendingfrom bell alarm, means for con
screws I25 (Fig. 1). A locating screw 125’ 10
necting said arm to the motor, a second cam fol
cates gear 30 with respect to gear l8. Frame 524
lower for controlling the operative connection of
is fastened to front plate I9 by screws I30.
Referring to Fig. 8, a spacer I26 separates front
said arm to the motor, said second follower being
displaced with respect to said ?rst follower so
plate I9 from clock dial I2'I. A circular opening
that the music roll will operate before the bell.
is provided in clock dial E2‘! in which alarm
dial 58 is placed. The alarm dial is practically
,9. The device according to claim 6, and means
for resiliently mounting within the housing said
flush with clock dial I21. The clock dial is posi
tioned on extensions I29 of post I1 and the dis
clock works, motor, cam, cam follower and lever
as a unit.
tance from posts [1 to center shaft 35 is accu
rately measured. Since the clock dial will be
10. In an alarm clock, an alternating current
rigidly held it is possible to have only a small
motor for driving the clock, a cam rotated by said
clearance between the two dials. The face of the
motor, a music roll, means for connecting the
clock has a neat and compact appearance.
music roll to the motor, a first cam follower for
Since shafts 26 and 29 are the most directly
controlling the said last-mentioned means, a bell,
coupled to the motor shaft they rotate at rela
tively high speeds and should be lubricated and
a hammer for striking said bell, a second cam
for that purpose I provide holes I3I and I32 in
spacer I26 (Fig. 9). When clock dial I2'I is in
place, two chambers de?ned by holes {3i and
I32 are provided between the dial and front plate
I9 into which lubricating means, such as a wick,
may be placed continuously to lubricate the shafts.
A clearance hole I33 may also be provided in
mer to strike the bell, a snap acting release lever
rotatably mounted on said cam and engaged at
one end by said ?rst cam follower, and a spring
follower for controlling the operation of the ham
fastened to the other end of the lever whereby the
lever will abruptly break the connection between
said ?rst follower and the cam.
11. In an alarm clock, an alternating current
spacer I26 to permit pivots 89 to project from
motor for driving the clock mechanism, a cam
70 having a cut out portion and rotated by the motor,
front plate I9.
While I have disclosed one embodiment of my
invention it will be clear to those skilled in the
art that various modi?cations may be made
thereon and that certain features thereof may be
used separately or in other combination Without 75
a first cam follower contacting said cam, a music
roll connected to said follower operable upon the
follower moving into said out out portion, a second
cam follower contacting said cam, a bell alarm
connected to said second follower and operable
upon the follower moving into the cut out portion
of the cam, a release lever having a normal posi
tion mounted on said cam adjacent its out out
and contacting said ?rst follower upon its enter
ing the cut out, and means for quickly returning
said lever to normal position thereby moving said
?rst follower out of the cut out and stopping the
operation of the music roll alarm.
a bell, a striker connected to said second follower
and operable upon said second follower moving
into the cut out portion of the cam to strike the
bell, a snap acting release lever having a normal
position mounted on said cam adjacent the cut
out but displaced with respect to the cut out so
that said followers may enter it, said lever having
a surface for contacting said ?rst follower, a
spring fastened to one end of the lever for quickly
12. In an alarm clock, an alternating current
motor for driving the clock mechanism, an hour
hand, a gear for rotating said hour hand, a cam
returning the lever to normal position thereby
having a cut out portion and connected to said
gear, a ?rst cam follower contacting said cam, a
and stopping the operation of the music roll, a
disc having a pin projecting therefrom movable
music roll connected to said follower operable
into three positions, in the ?rst of said positions
upon the follower moving into said out out por
the music roll and bell striker being both discon
moving said ?rst follower out of the cut out
tion, a second cam follower contacting said cam
nected from the clock mechanism, in the second
at a point behind said ?rst follower with respect
position only the music roll being connected, and
in the third position the music roll and bell striker
to the direction of rotation of the cam, a bell, a
striker connected to said second follower and
being both connected, a projection from the ?rst
operable upon the second follower moving into 20 cam follower contacting the pin only in said ?rst
position whereby said ?rst follower is held free
the cut out portion of the cam to strike the bell,
a snap acting release lever having a normal posi
of the music roll, and a second lever positioned so
tion mounted on said cam adjacent the cut out but
that one end engages the second cam follower
displaced with respect to the cut out so that said
and the other end said pin in said ?rst and second
followers may enter it, a spring fastened to one 25 positions of the pin whereby said second follower
end of the lever for quickly returning said lever
may be held from entering said out out to prevent
operation of the bell alarm.
to normal position thereby moving the ?rst fol
lower out of the cut out and stopping the opera
14. The device according to claim 13, and in
tion of the music roll, and means for alternatively
Which said hour hand is formed into a ring inter
connecting the music roll, the music roll and bell 30 mediate its ends, and has a pointer within said
ring for alignment with said alarm dial.
striker or disconnecting the music roll and bell
striker to the clock mechanism.
13. In an alarm clock, an alternating current
motor for driving the clock mechanism, a station
ary clock dial having a central opening, an ad 35
The following references are of record in the
justable alarm dial situated in said opening and
in substantially the same plane as the clock dial,
?le of this patent:
an hour hand, a gear for rotating said hour hand,
a cam having a cut out portion and connected
to said gear, a ?rst cam follower contacting said 40
cam, a music roll connected to said follower oper
able upon the follower moving into said out out
portion, a second cam follower contacting said
cam at a point behind said ?rst follower‘ with
respect to the direction of rotation of the cam, 45
Sprangers ________ __ July 29, 1890
Porter ____________ __ Nov,
Stange ___________ __ Aug.
Lux ______________ __ June
Putnam __________ __ June
27, 1894
16, 1904
24, 1930
16, 1936
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