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Патент USA US2115756

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May 3, 1938.
R. B. WHITMAN ET AL
2,115,756
COMBINED RADIO-PHONOGRAPH TIME CONTROL METHOD AND MEANS
Filed Sept. 14, 1954
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INVENTORS
Rag, Belmont Whnman & Edward H Haan
7
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ATTORNEY
2,115,756
Patented May 3, 1938
UNITED STATES PATENT OFFICE
2,115,756
COMBINED RADIO-PHONOGRAPH TIME
CONTROL METHOD
MEANS
Ray Belmont Whitman, Essex Fells, N. J., and
Edward H. Haan, Chicago, Ill.
Application September 14, 1934, Serial No. 744,044
6 Claims. (Cl. 179—100.11)
This invention relates to radio-phonograph tising message or station announcement once
combinations, and more especially to a radio
phonograph in which a time switch is employed
to automatically change from the playing of the
5 radio to the playing of the phonograph and vice
versa at any desired time intervals.
An object of the invention is to provide a radio
receiving set with clock means for starting and
stopping it automatically at any desired time
10 intervals.
‘
Another object is to provide a phonograph with
means for automatically starting and stopping it
at any desired time intervals.
A further object is to provide means with a
15 radio-phonograph combination by which the
radio may be heard in operation during the pe
riod of a broadcasting program and the phono~
graph then heard and the radio silent during the
period when the station announcement would
normally be heard on the radio.
20
A still further object is to provide time control
means for a radio, a phonograph, or a combina
tion of the two whereby either instrument may
be started or stopped while the other is stopped
25 or started, to be stopped or started at any desired
time intervals, together with means for adjusting
said time intervals at will.
Yet another object of the invention is to pro
vide simple and inexpensive means in conjunc
30 tion with a radio-phonograph combination by
means of which a national advertiser’s broad
casting program may be utilized by a local ad
vertiser, for instance, by substituting the pe
riodic advertising message of the national ad
35 vertiser at the beginning or end of each broad
casting program with an advertising message of
the local advertiser.
All these and other objects as suggested here
every ?fteen minutes, or other adjustable inter
vals in accordance with the operation of this in
vention.
Like numerals refer to like parts throughout 5
the several views.
A largely-standardized form of time switch is
shown somewhat in detail in Figs. 1 and 2.
There is shown the hour hand ID, the minute
hand II, and the turning knob l2 by means of 10
which the clock may be set to any desired time,
such as to correspond with the correct time.
The time switch has a supporting frame struc
ture l3, an actuating motor I4, a suitable gear
reduction l5 between the ?rst driven gear or pin- "15
ion I6 off the motor and the hour and minute
hands In and II respectively, driven thereby.
The motor 14, which drives the clock hands at
proper speeds in accordance with the correct
time, also drives at greatly reduced speed by .0
means of the gear reduction a shaft I‘! which is
keyed to and rotates the time control disc l8 in
a clockwise direction as viewed in Figure l and
shown by the arrow.
An electrical conducting sleeve I9 is aflixed 25
to and rotates with shaft l1 and disc l8, and a
?exible contacting and conducting ?nger 20 bears
on sleeve l9 as it rotates to make electrical con
tact therewith.
The gear reduction from the time clock motor '30
drive is such that disc I8 is caused to rotate once
every two hours in the particular arrangement
shown. Eight equi-spaced projecting pins 2|
project laterally from the outside surface of disc
l8, so that as contact is made with each of these 35
pins, in manner now to be described, a time in
terval of ?fteen minutes results therefrom.
Mounted in an upstanding pedestal 22 secured
companying drawing, in which
Figure 1 is a side elevational view, partly in
phantom, showing a form of time switch adapted
to’ frame I3 is a knurl-headed adjusting screw
23 and positioned in contacting relation there- 40
with is a conducting arm 24 centrally pivoted at
25 and having its upper end positioned in the
line of rotation of the eight pins 2| so as to make
for use to control the starting or stopping of a
45 phonograph or radio to bring about the results
26 is attached to frame I3 at one end and to a 45
below are attained by the methods and means
40 now to be described, and illustrated in the ac
accomplished by this invention.
Fig. 2 is an end elevational view showing the
essential parts of the time switch of Fig. 1.
And Fig. 3 is an assembly view, largely di
50 agrammatic, showing the switch mechanism, the
phonograph motor, the phonograph electrical
pickup device, the cam operated switch operated
by the phonograph motor, and the radio and
other electrical connections whereby a phono
55 graph record may be substituted for the adver
contact therewith as they rotate.
A spiral spring
point intermediate the upper end and the pivot
point of arm 24 in manner as clearly shown in
Fig. 1. This causes arm 24 to be rotated clock
wise as shown in Fig. 1 tending always to move its
upper end to the right. At the same time the '50
distance it can move is determined by the posi—.
tion of the end of the adjusting screw 23 as
shown.
By means of this arrangement it will be seen
that a movement of the adjusting screw 23 will=55
2
2,115,756
alter the time that the switch closes,'that is the
time when one of the pins 2| makes contact with
the upper end of arm 24, and the length of the
arm 24 above the pivot point, for instance, de
termines the length of time that the switch is
closed. In the present embodiment this is set
for about two minutes on the theory that prac
tically all phonograph records play for a period
considerably in excess of that and the mech
anism shaft. When the phonograph switch has
been closed a suf?cient time interval to permit
cam 31 to rotate sufficiently to engage cam switch
42, the phonograph mechanism is caused to op
erate to play the record from beginning to end.
Then while the phonograph control switch 29
stays closed the same sequence of operation on
the phonograph is repeated—that is, the record
is repeated or changes to a new record which
10 anism will operate properly providing that that
time interval is shorter than the playing of the
is played,.depending upon the setting of the
10
phonograph mechanism.
phonograph record, as will be later explained.
Now going to Fig. 3, the phonograph motor is
shown at 21, the A. C. feed to the radio set is
15 shown at 28, a manual phonograph switch at 29,
the A. C. feed to the clock at 30, and the A. C. line
feed, which in this. case is 60 cycle 120 volt, is
shown at 3|.
'
Now as regards the function of the time switch:
this is substituted for the phonograph control
switch and operates in this manner; namely, at
a predetermined time the time switch closes or
makes contact between one of the pins 2| and
contact bar 24 and causes the phonograph mo
tor 21 to‘ start. This‘ motor is connected to the
The detector of the radio set is shown at the > phonograph mechanism in such manner that it
20 top of Fig. 3, the radio frequency side being at operates or rotates cam 37, which closes switch 20
42,, which is electrically in parallel with the time
the left at 32, the arrow 33 designating a con
nection to the audio ampli?er, the audio bias switch. Thus the time switch must remain closed
being shown at 34 and the detector bias at 35, until after switch 152 has been closed by the
this wiring representing any standard radio set.
The phonograph electrical pickup is shown at
phonograph mechanism. In fact any time inter—
36, and at 3'! is shown the switch cam of a record
changing phonograph mechanism such as that
switch 42 by. the phonograph mechanism but
shorter than the period necessary for operation
put out by Capehart Corporation and invented
of the record may be utilized. The adjustment
of the time switch for such time interval is
made by moving arm 26, in pivot 25 to change the
relation of the levers on each side of said pivot. 30
In order that the time switch (which for pur
poses of illustration only in this diagram is shown
by one of these applicants, Ray Belmont Whit
man, and now covered by Patent No. 1,991,005,
dated Feb. 12, 1935. There are several such
mechanisms on the market and they all have in
common a mechanical and electrical means for
returning the tone arm or pickup of the phono~
as graph to outside position after a record has been
played, repeating or changing the record, and
then moving the pickup» arm into playing posi
tion and permitting the record to play through.
In record changing phonographs of the type
- to
above referred to, there are used phonograph
records in which the inner line of the record
terminates in a large pitch spiral groove leading
toward the center label and passing a predeter
mined point a definite distance from the center
of the record which mechanical movement starts
the cycle of operation, in a well-known manner.
Thereupon the pickup arm raises, swings out
wardly, the same record continues to rotate or is
changed and a new one takes its place, then the
5.0 pickup arm swings inwardly and the needle end
is deposited gently in the ?rst or outer groove of
the record at which point mechanical control
ceases while the record plays freely throughout
its length, after which the cycle of operation is
5,5 repeated. Cam 3'! designates therefore the main
operating cam by which this action takes place.
None of the details of such mechanism is shown
other than the cam since it is no part of the
60
as operating in a plurality of uniform time in
tervals) may be set, the adjusting screw 23 is
provided so that said interval may start at any 35
predetermined time. For instance, if it is de
sired to start at an interval ?ve minutes after the
hour, when the clock has reached this time the
adjusting screw 23 is regulated until arm 2/;
,40
contacts with one of the pins 2!.
The duration of this contact is altered by mov»
ing ‘arm 24 in pivot 25 as previously explained.
In Fig. 3 switch 4B is shown as a double-pole
double-throw switch, which by means of the con—
tact at 4! causes the radio to operate when the
switch is as shown. But when cam til has moved
around until its cam surface is upward the switch
is then shifted to make a contact at 4.'i—-M, at
which time the radio is disconnected and the
phonograph pick-up is caused to operate through 50
the phonograph mechanism to sound the record.
The master throw-out switch 5 is positioned
as shown, so as to keep always in circuit the elec
tric clock when both radio and phonograph are
electrically disconnected from the source of cur~ 65
rent supply.
Having now described the invention, what is
present invention.
claimed as new and for which Letters Patent of
The rotary movement of cam 3'! is caused to
move in a clockwise direction as shown in Fig. 3
the United States is desired, is:
1. The combination in a combined electrically
and in time the extended portion of said cam
contacts and raises conducting arm 38 and
through it also raises members 39 and 40, which
.65 are other contact arms with suitable projections
thereon as shown. Thus members 33, 39 and 41'!
are simultaneously lifted to break the connec
tion with member 4! .and make connection with
members 42, 43 and 44. By this means contact
is broken from the radio frequency to the de
70
val greater than that necessary to close the
tector and the phonograph pick-up 36 connected
1 to the audio ampli?er, and permits the electri
cally-operated phonograph to play.
The operation of the device, then, may be
summarized as follows:
Cam 3'! is mounted on‘the phonograph mech~
60
operated radio-repeating phonograph instrument
of current-conducting and contacting means in
cluding a time switch comprising a rotary disc,
spaced laterally-projecting contacts on the disc,
and a ?exible contact arm, and an electric clock
adapted to operate said disc and including con
necting means for said elements by which the
radio may be disconnected and the phonograph
connected at a given time interval and the phono
graph disconnected and the radio connected at 70
another given time interval.
2. The combination in a radio receiving set of
clock means, a rotary disc switch associated there
with but connected to the back face thereof by
reduction gearing and adapted to start and stop 75
2,115,756
the radio automatically at any desired time in
terval.
3. The combination of an electrically-operated
phonograph and current-conducting and con
tacting means therefor with an electric-clock
operated shaft, of a time switch actuated by the
phonograph starting-and-stopping mechanism,
and comprising a rotatable member mounted to
rotate on the shaft and making electrical con
10 tact therewith, a plurality of contact points near
the periphery of said member, a movable con
ducting arm pivoted intermediate its ends and
having one of its ends normally in the path of
said contact points and adapted to make con
-15 tact therewith for a given time interval, and elec
trical conductors leading away from both the
conducting arm and the shaft to a source of cur~
rent supply and the phonograph.
3
4. The invention as in claim 3, the conducting
arm including means for adjusting its interval
of contact with the contact points.
5. The invention as in claim 3, the conducting
arm including means for adjusting its time of 5
making contact with the contact points relative
to the movement of said shaft.
6. The combination of an electrically-operated
automatic phonograph and current-conducting
and contacting means therefor, including a cam 10
actuated by the phonograph starting-and-stop
ping mechanism, said cam being adapted to ac
tuate a double-throw double-pole switch for mak
ing and breaking electrical circuits to the phono
graph and also to a time switch in the current
conducting means controlled thereby.
RAY BELMONT WHITMAN.
EDWARD H. HAAN.
15
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