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Патент USA US3058757

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Oct. 16, 1962
3,058,748
J. J. FERRER ETAL.
ACCESSORY APPARATUS FOR USE WITH PHONOGRAPH RECORD PLAYER
2 Sheets-Sheet 1
Filed Aug. 11, 1959
‘:1
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1
IN VEN TOR-5
Jo HN J- FEQQé-‘Q
y
PA TQICK ram e0,
A
oe/vey
Oct. 16, 1962
3,058,748
J. J. FERRER ETAL
ACCESSORY APPARATUS FOR USE WITH PHONOGRAPH RECORD PLAYER
2 Sheets-Sheet 2
Filed Aug. 11, 1959
,-
.1
v1! 11111111 IIIIIIIIL'IllIIIIIIIIIl/?
INVENTORS .'
Jo/m J. F£4,951?
BY
M\ EA m A
M.r.
B?SdfZd-g
Fatented Oct. 16, 1962
2
1
cally-operable apparatus, such as a spotlight or the like,
may be optionally brought into play.
An important feature of the improved apparatus relates
3,058,748
ACCESSORY APPARATUS FUR USE WITH FHONG
GRAPH RECQRD PLAYER
to the construction and mode of operation of the slave
disk. As will be pointed out hereinafter, it may be com~
posed of an integral element of plastic or equivalent
John .l'. Ferrer, Union, and Patrick Tornaro, 312, Maple
wood, Ni, assignors, by Inesne assignments, to Dan
Golenpaul Associates, New York, N.Y., a co-partner
material, whereby its manufacture is made simpler and
less expensive, and whereby its ruggedness and ability to
shi
Filed Aug. 11, 1959, Ser. No. 833,113
19 Claims. (c1. 274-1)
withstand long periods of use are greatly enhanced.
Brie?y stated, the improved guideway on the slave disk
is provided with variations arranged in alternating relation
This invention relates generally to the reproduction of
along its extent. The guideway follower includes a mov
able arm which rides along the guideway as the slave disk
sound by phonograph records, and has particular refer
ence to an accessory electrical apparatus for producing
signals at selected predetermined times during the playing
of a record.
rotates, and is responsive to the variations in the guide
15 way and adapted to control a make-and-break device in
A general objective of the invention is to provide a
simpli?ed accessory device which may be readily brought
into operative relation to a conventional record player
without requiring any special tools or skill. The signals
the signal circuit. In the preferred embodiment of the
invention the guideway is a simple upstanding rail pro
vided with relatively elevated and depressed parts. The
tion or other sound recording which is being played, and
may be used for a variety of educational, entertainment,
mentary.
the high and low spots are employed to control the make
and-break means in the signal circuit. The construction
and arrangement of the parts are such that all rubbing
contacts are only between non-electric parts, whereby
Wear and tear are greatly reduced. Moreover, the make
and-break device may be mounted in the guideway fol
lower in a shielded manner, whereby ?ner contact~point
It is a more speci?c object of our invention to provide
improvements in an accessory apparatus of the character
thereby enhanced.
guideway follower includes a pivoted arm which rides on
are keyed in a predetermined manner to the musical selec 20 the rail, and the movements of this arm as it encounters
or other purposes.
For example, a listener to a musical
recording may be alerted at predetermined time intervals
to noteworthy parts of the music and may thus “follow
the music” with the aid of a correlated printed com
materials may be employed, and reliability of operation
A general objective of our invention is to provide an
illustrated and described in the pending application of 30
apparatus of the character referred to, and a synchronizing
Hugo Cohn and Joseph L. Bonanno, Serial No. 795,981,
system, which are unusually compact, relatively inexpen
?led February 27, 1959.
sive to manufacture, easy to use, reliable in operation, and
The functioning of the apparatus to which this inven
admirably suited to withstand long periods of use with
tion relates is predicated upon the use of an auxiliary
out impairment.
turn-table which is caused to be driven in timed relation
Several ways of achieving these objects and advantages
to the movement of the record player, and an auxiliary or
in a practical manner, and such other objectives and advan
slave disk mounted on and keyed to the auxiliary turn
tages as may hereinafter be pointed out, are illustrated in
table. The slave disk is provided with a pro-formed
the accompanying drawings in Which—
spiral guideway along which a special follower travels as
the slave disk rotates. At predetermined intervals mecha
40
nism becomes effective to establish or activate an electric
circuit which controls the desired signal or signals.
Accurate synchronization is achieved by an arrangement
FIGURE 1 is a diagrammatic view of the elements and
electric circuits which form parts of an apparatus embody
ing the features of the invention;
FIGURE 2 is a plan view of the improved slave disk
whereby the rotative movements of the record itself are 45 by itself;
FIGURE 3 is an enlarged and somewhat exaggerated
relied upon to advance the slave disk. This is accom
fragmentary cross-sectional view showing the slave disk in
plished by a means which advances the auxiliary turn
position on the auxiliary turn-table, the cross section being
table intermittently, there being at least one increment of
along a diameter as indicated at 3——3 in FIGURE 2;
movement for each complete revolution of the recording.
FIGURE 4 is a perspective view of a switch which may
The parts of the device are so oriented that the signal 50
be employed for controlling the intermittent actuation of
circuit is established and maintained for at least one com
the auxiliary turn-table:
plete rest period of the slave disk.
FIGURE 5 is a plan view of the switch of FIGURE 4
One of the features of the present invention resides in
with the ‘top wall removed, to reveal the switch contacts
the provision of an improved means for actuating the
switch controlling the electrically operated drive means 55 themselves;
FIGURE 6 is an enlarged cross-sectional view along
that imparts intermittent movements to the auxiliary turn
the line 6-6 ‘of FIGURE 1, showing the elongate hous
table. This switch is supported alongside of and in prox
ing of the guideway follower, the parts carried thereby,
imity to the edge of the record, and the improved switch
‘and the manner in which they cooperate with the guide
operating means is one which is adjacent to the edge of
the record but is not an integral part of the record itself. 60 way of the slave disk;
FIGURE 6a is a fragmentary view similar to FIGURE
Another improvement provided by the present inven
6, showing the relationship of ‘the parts when the con
tion is an electrically operated counter in the signal circuit.
tacts are together;
The counter is of the well-known type which is provided
FIGURE 7 is a fragmentary cross-sectional view along
with means for displaying, upon each actuation thereof,
the next of a series of sequential indicia. This greatly 65 the line 7-7 of FIGURE 6;
FIGURE 8 is a fragmentary perspective view of a
enhances the usefulness of the apparatus, and makes it
part of the slave disk, shown in cross section, to illustrate
easier for a listener to correlate the alerting signal or
the nature of the spiral guideway;
signals with a published step-by-step description of the
musical theme or other content of the recording.
The improved signal circuit is also provided with a
convenience relay by means of which additional electri
70
FIGURE 9 is a view similar to FIGURE 8 showing
the outer end of the guideway;
FIGURE 10 is a diagrammatic view of the counter,
3,058,748
and the mechanism by means of which it may be oper- I
ated;
FIGURE 11 is a view similar to FIGURE 6 illustrating
a modi?cation;
'
in parallel with the circuit ‘of the coil 30 and switch 32.
One of these circuits is designated 58, and includes ‘an
electric lamp 59 which lights up when the main switch
37 is closed to indicate to the user that the electric power
FIGURE 12 is a schemtic perspective view to illus
has been turned on. The other circuit, designated 60,
trate an alternative form of switch-operating underlay;
is the signal circuit which alerts the user at predetermined
and
intervals during the playing of the record 13. The cir
FIGURE 13 is ‘a schematic plan view showing a further
cuit 60 preferably includes a visual signal in the form
modi?cation in the nature and ‘co-action of ‘the underlay
of a small electric lamp 33, and in ‘accordance with the
and the switch it controls.
10 present invention this circiut also includes a solenoid
A conventional record player 10 is indicated in plan
61 for actuating a counter 62, and -a convenience relay
view in FIGURE 1. Mounted on the spindle 11 of its
63. The activation of the signal circuit 60 is controlled
turn-table 12 is a disk-type phonograph record 13. Be‘
by the make-and-break device carried by the guideway
tween the record and the turn-table is a special disk-like
follower 23. This device is best illustrated in FIGURES
underlay 55. It is concentric with the record 13 ‘and 15 6 and 6a, ‘and consists of a pair ‘of relatively movable
has a non-slip upper face so that it moves with the record
switch contacts 64 ‘and 65, the circuit 60 being closed
13 as the turn-table 12 is rotated. The pick-up arm 14
when the contacts come together, ‘as indicated in FIG
of the usual reproduction apparatus (not shown) is
pivoted in well-known fashion at its end 15, ‘and the op
posite end 16 carries a needle which’n'des ‘along the
groove of the record as the latter rotates continuously.
The auxiliary turn-table 17 and its support 18 are
shown in perspective in FIGURE 1. Mounted on the
spindle 19 is a slave ‘disk 20 of special character. It is
preferably locked against slippage on the turn-table 17
by means of an ‘off-center pin 21. It has a specially
formed spiral guideway 56 on its obverse face (FIG
URE 6a, and the circuit being de-energized whenever the
contacts ‘are separated, as shown in FIGURE 6.
The switch 32, chosen for illustration in FIGURES 4
and 5, comprises a housing 34 for the two switch con
tacts 39 and 40. The contact 40 is so designed and
mounted that it is resiliently biased toward the right,
as viewed in vFIGURE 5. At its end, the contact 40
carries a follower ‘41 which projects laterally from the
housing 34 into a position closely adjacent to the edge
of the record 13. The follower 41 need not necessarily
URE 3), this guideway consisting essentially of an up
contact the edge of the record 13, but is brought into a
standing spiral rib or rail. At the outer end of the spiral
position in which it will be regularly encountered and
the rail is preferably formed with a lateral enlargement 30 moved by the projecting area 66 formed on the marginal
57 (see FIGURES 2 and 9); and at the inner end of
edge of the special underlay 55. One way of bringing
the spiral the rail may be terminated. in any desired
the follower 41 into proper position is to mount the switch
or suitable manner, or the innermost convolution may
.be circular and the rail provided with adequate slots so
that the guideway follower may continue around the in
nermost convolution in case it is inadvertently neglected
when the end of the guideway has been reached.
The guideway follower consists essentially of an elon
gate housing 23 in the nature of a pivoted arm, free to
swing on the pivot 24 at its rear end.
base may be provided with a magnet 44- on its under
face, whereby the placement of the switch on any me
tallic surface, such as the top wall of the record player
10 will establish a stable magnetically-held relationship.
If desired, a suction cup could be provided for this pur
It carries a 4.0 pose, or the base 43 might be weighted so as to stabilize
special make-andlbreak device presently to be described,
and 1a means adapted to ride on the guide rail and to
transmit the variations 'in the latter to the make-and
break device.
ing housing 34 on a pedestal 42 whose base 43 is pro
vided with means for anchoring it. For example, the
_
The spindle 19 of the auxiliary turn-table 17 is rotated
intermittently. One way of achieving this result is to
mount a ratchet 27 on the spindle, adapted to be driven
by a pawl 28. A preferred arrangement consists in,
biasing the pawl 28 in the driving direction (leftward
in FIGURE 1) by means of a tension spring 29, ‘and in
termit-tently drawing the pawl 28 in the opposite direction
by a magnet coil or solenoid 30.
A slip-clutch 38 or its‘ equivalent is provided between
it in the desired location.
The contacts 39 and 40'may be made of minute size,
since very little power is required to actuate the magnet
coil 30. Accordingly, the movable contact 40 may be
formed of a thin light-weight springy wire or the like
whose inherent springiness urges it constantly toward the
position shown in FIGURE 5. Since the'motion re
quired to bring the contact 44)‘ into engagement with the
contact 39 is very small (a minute fraction of an inch
will su?ice), and since the ‘force required to move the
element 40 is also small, the parts may be made‘of un
usually light weight material, and the entire switch de
vice 32 can be barely an inch rlong.
Except for the protrusion 66, the underlay 55 has a
be manually rotated in reverse direction during the initial 55
diameter
smaller than that of the record 13, so that the
setting'of the slave disk into‘ proper starting position.
lifting of the record from the turn-table is facilitated. An
This adjustment is facilitated by the enlargement 57- at
alternative arrangement, which does not have this ad
the outer end of the spiral .guideway, since. the move- .
vantage,
is shown in FIGURE 12. In this case the under
ment of theslave disk .in the reverse direction is brought
to. a halt when this enlargement encounters ‘the end of the 60 lay 67 has a peripheral edge which is, throughout most
of its extent, greater in diameter than that of the record
guideway follower 23.
I
,
the ratchet 27 and the turn-table 17 so that the latter can
The coil 30 is in an electric circuit which includes
the power source 31 and a miake-andrbreak switch 32.
The latter is arranged adjacent to the record 13, and co
operates with the special underlay 55 in such a way that '
13‘ (indicated by dot-and-dash lines in FIGURE 12), and
is provided in one region with a cut-away 68. In this
case the switch contacts 39a and 40a are arranged in
such a way that the follower 41a, riding on the periphery
of the underlay 67, presses the contact 40a against its
resilient bias, thus maintaining the contacts in a separated
condition, throughout most of the revolution of the under
illustrated, there is -a single momentary actuation ‘of the .
lay
67. However, whenever the follower 41a encounters
switch 32 during each revolution of the record, and the
the recess 68, the inherent resilience of the contact 40a
1actuation consists of a closing of the switch contacts
moves it into engagement with the contact 3-9a‘thus
thereby energizing the coil 30. This, in cooperation with 70, closing the signal circuit.
'
the action of thespring 29, advances the ratchet 27 and
In FIGURE 10 we have shown some of the details of
' hence the slave disk 29 through a predetermined incre
the counter mechanism 62 and the solenoid 61 which
' ment of movement.
actuates it. The counter chosen for illustration has two
The power. source 31 also energizes two other circuits, 75 drums 69‘ and 7%}, each with ten peripheral faces. One
the switch 32 is actuated momentarily at least once dur
ing each revolution of the record 13. In the apparatus
3,058,748
5
‘of these drums displays “units” through the window 71
in the wall of the casing 18; the other drum indicates
“tens.”
The counter is thus able to expose to view a
succession of indicia ranging from numeral “1” to nu
meral “99.”
The drums 69 and 70 are arranged side by side on a
common axis of rotation, and are interconnected by gear
6
8601 has its inner end 83a in engagement with the upper
contact 64a, and whenever the end 87a of the arm en
counters one of the raised parts of the guideway the con
tact 64a is pressed downwardly into touching relation to
the contact 65a, thus closing the signal circuit.
In practicing the invention, the housing ‘18 of the slave
disk mechanism is of hollow construction, and the ratchet
mechanisms that operate the turn-table 1'7 and the counter
mechanism (not shown) which advances the “tens” wheel
62. are mounted Within it. If the power source 31' is a
one step at the completion of one complete revolution
of the “units” wheel. The latter is actuated by a pawl 10 battery, this may also be mounted within the housing 18.
The signal lamp 33 is preferably mounted in a side wall
72 and ratchet 73. The ratchet 73 is mounted on the
of the housing 18, and the main switch 37 may be mounted
shaft 74 of the wheel 69, and the pawl 72 is at the end
in any desired accessible position either on a side wall or
of an arm 75 pivoted at 76 to the core 77 of the solenoid
on the top wall. It is of advantage to mount the lamp
61. The solenoid core 77 is advantageously secured at
its rear end to the piston 78 of a kind of dash-pot in which 15 59 in direct proximity to the window 71 of the counter
62, so that the indicia displayed by the counter are con
a compression spring 79 cushions the drum-actuating
movements of the core 77.
stantly illuminated when the mechanism is operating.
A spring 80 biases the pawl arm 75 toward the ratchet
73, and the arm 75 is preferably made of such a length
that in the deenergized condition of the solenoid 61 the
be of any desired length, the major part of the auxiliary
spring 79 pushes the pawl 72 entirely clear of the ratchet
73, as shown in FIGURE 10, so that under these con
ditions the drum 69 is freely adjustable in either direc
tion. These adjustments may be eifected manually, by
insertion of the ?nger upwardly through the aperture
81 in the lower wall of the casing 18.
The drums of the counter are preferably constructed
Since the lead wires 54 extending to the switch 32 may
apparatus may be located at a considerable distance from
the record player itself, and the only element brought into
proximity with the record player is the switch 32. As
hereinbefore described, this is set in inconspicuous fash
ion alongside the record 13.
An alternative control of this switch, eliminating the
25
necessity for a follower such as that shown at 41, is indi
cated in FIGURE ‘13. In this case, the underlay 917 is
provided along one part of its edge with a magnetic ele
ment 91. The two contacts of the switch 32 are desig
detent 82 is adapted to hold the drum in position after
30 nated 92 and 93:, the latter being the movable contact.
each increment of movement.
It is provided with a magnetic element 94 which cooper
Referring now to FIGURES 2, 3, and 6-9, it will be
ates with the element 91 in moving the contact 93 when
observed that the slave disk 70 is a single element of
ever the magnetic elements come into proximity. Actual
molded plastic or the like. A spiral guide rail such as
contact between them is unnecessary. By Way of exam~
that shown at 56 is preferably formed on each surface
of the disk, whereby a single slave disk is reversible, just 35 ple, the element 94 may be a small magnet, and the ele
ment 91 may be a metallic band or strip. Other cooper
like the record 13 itself, and can thus service the ap
able magnetic elements or pieces may obviously be em
paratus for both sides of the record 13. The spiral guide
ployed.
way on the under side of the slave disk 20 is indicated
It is thought to be obvious from the foregoing that a
at 83.
As hereinbefore noted, each spiral guideway on the 40 separate slave disk is provided for each recording to be
listened to. Its depressions 84 (or elevations 84a) will
slave disk 20 has alternately arranged variations along
with inwardly directed shoulders, whereby a spring-pressed
its extent. These may be created by forming depressed
parts 84 at selected intervals along the extent of the rail
or guideway 56. Pivotally supported by the guideway
follower 23, as at 85, is an arm 86 having one end 87
resting upon and riding on the top face of the rail 56,
and having its opposite end 88 in engagement with the
springy contact 65. As long as the end 87 engages with
the relatively raised regions of the rail 56, it presses the
be so located that at the times when commentary or ex
planation is desired, the signal circuit will be completed
so as to alert the listener and thereby enable him to refer
to a printed commentary previously prepared for that par
ticular recording. This commentary will be provided with
sequential indicia corresponding to those displayed by
the counter 62.
In this way the commentary can be
referred to at any time during the playing of the record,
contact 65 downwardly away from the contact 64, as 50 since coordination is established by means of the counter.
The variations in the guideway of the slave disk,
shown in FIGURE 6. However, whenever the end 87 of
whether they be depressions or raised parts or other ex
the arm 86 enters one of the depressions 84 the rear end
pedients of similar nature and purpose, are alternately
88 rises, as shown in FIGURE 6a, allowing the contact
arranged, and those which operate to close the signal cir
65 to spring into touching relation to the contact 64,
55 cuit are positioned so that this will happen during rest
thus closing the signal circuit 60.
periods of the slave disk. In this way the signal circuit
~ The arm 86 may be weighted or controlled by a spring
will remain operative for a predetermined minimum pe
(not shown) to urge its end 87 constantly in a downward
riod. For example, if the contacts of the switch 32 are
direction against the guideway.
closed once during each revolution of the record 13, the
The housing 23 is of inverted-U cross section, and the
signal circuit will remain in operation for at least one
arm 86 and the contacts it controls are mounted within
full revolution of the record 13. If it is thought to be
the con?nes of the housing in a desirable shielded condi
desirable, the depressions or raised parts or other varia
tion. Since the contact points are guarded against injury,
tions in the guide rail may be made long enough in extent
they may be composed of high quality material best suited
to keep the signal circuit closed during a predetermined
for the purpose. At its front end, the follower housing
23 is provided with downward extensions 89 on its side 65 succession of rotative movements of the record 13. Usual
ly, a signal light or other device that is maintained opera
walls, these extensions resting upon the body of the slave
tive for two or three revolutions of the record 13 is most
disk on opposite sides of the rail.56, whereby the follower
effective to alert the average listener in satisfactory fash
_is properly guided, and the arm 86 constantly maintained
ion.
in operative engagement with the guideway 56, as the
The manner of use of the apparatus is as follows:
70
slave disk rotates.
The slave disk 25} having been placed upon the auxiliary
A possible alternative arrangement is shown in FIG
turn-table 17, the follower arm 21 is set upon the outer
URE 11, in which the slave disk 26a is provided on each
most turn of the guideway 56, and the slave disk is man
surface with a spiral guideway 56a, the latter being pro
ually turned in reverse direction (made possible by the
vided with relatively raised or elevated portions 84a at
‘selected intervals along its extent. In this case the arm 75 slippage of the clutch 38) until the end of the follower
3,058,748
is
arm 23 encounters the enlargement 57 at the outer end
.zontal, said arm havingione ,endresting upon said rail
‘of the rail 56. The turn-table 12
is then set into operation, and at
?rst emanates from the record .13
The apparatus is then properly
of the record player 10
the instant when sound
the switch 37 is closed.
and its other end in operative engagement with one of
synchronized and will
function automatically throughout the playing of the
which said follower includes an" elongate housing of in
record 13.
said contacts.
7
p
-
4. An accessory apparatus as de?ned in claim 1, in
verted-U cross-section, said pair of relatively movable
vcontacts being mounted within the con?nes of said elon—
gate housing, said guideway being an upstanding rail and
Since the auxiliary turn-table 17 advances through inter
the variations consisting of raised and depressed parts in
mittent increments in direct dependence upon rotative
movement of the underlay with which the record 13 is in 1O the top surface of said rail, said raised and depressed
parts being incapable of conducting electricity, said re
non-slip engagement, it follows that slippage of the under
lay on the turn-table 12, or irregularity in the speed in the
rotation of the turn-table, have no effect upon the desired
sponsive means being an arm pivotally mounted within
accuracy of synchronization. Similarly, in initially moni
toring the record for the purpose of placement of the
variations in the guideway in desired locations (prior to
the other end in operative engagement with one of said
the manufacture of the slave disk 28) the editor can rely
solely upon the sounds he hears, and is not required to
specify points of interest in terms of turn-table revolu
tions or speed or stop watch time intervals, each of which
is obviously variable from one record player to another.
The apparatus illustrated, and the circuits shown, have
proven satisfactory in practice. The auxiliary turn-table
unit is small and compact, and can be made as small as
six inches or so in width. The power required can be
said housing and having one end riding on said rail and
contacts.
5. An accessory apparatus for use with a phonograph
record player in which a phonograph record is continu
ously rotated, comprising a slave disk having a spiral
guideway with alternately arranged variations along its
extent, said variations being incapable of conducting elec
tricity, a guideway follower, a turn-table for supporting
said slave disk, electrically operated drive means for im
parting intermittent movements to said turn-table, a cir
cuit for said drive means including a switch, means for
operating said switch at least once during each revolution
furnishd, if desired, by simple inexpensive batteries, or
of said record so as to impart increments of movement
it can be derived (with appropriate reductions in voltage
if necessary) from ordinary house current. The slave
disks are inexpensive, light in weight, sturdy, wear-resist
ant, and manufacturable in large quantities at low cost.
They can be composed of unbreakable material, prefer
ably plastic or its equivalent. The counter illustrated
has only two drums, but obviously more drums can be
provided, if desired, and indicia other than numerical
markings can be employed. The optional convenience
relay coil 63 may be associated, if desired, with a con
venience outlet, so that any desired additional signaling
to said slave disk, an electric signal, a single circuit in
cluding a make-and-breal; means, and means on said
follower responsive to said guideway variations for actu
ating said make-and-break means in step with said alter
nations.
.
6. An accessory apparatus as de?ned in claim 5, in
which said’ switch includes a movable contact supported
alongside of and in proximity to the edge of the record,
said switch operating means being an underlay for the
record having a non-slip upper face, and means on the
edge of said underlay for actuating said movable contact.
7. An accessory apparatus as de?ned in claim 5, in
instrument (such as a large ?oodlight, or other apparatus
which said switch includes a movable contact supported
calling for greater power or voltage than is available at
40 alongside of and in proximity to the edge of the record,
the power source 31) may be readily plugged in.
said switch operating means being an underlay for the
It is to be understood, of course, that many of the'
record having anon-slip upper face, and means 'on the
details herein described and illustrated have been fur
nished merely by way of example, and that they may be
edge of said underlay for actuating said movable contact,
modified in numerous respects by those skilled in the art
said means comprising a projecting area extending radi
without necessarily departing from the spirit and scope 45 ally outward beyond the edge of the record, the re
mainder of the underlay having a diameter less than that
of said record.
What we claim is:
of the invention as expressed in the appended claims.
1. An accessory apparatus for use with a phonograph
record player in whichra phonograph record is continu
ously rotated, comprising a slave disk and means for
supporting it for rotation, means for rotating said slave
.disk in timed relation to the rotation of said record, a
spiral guideway on said slave disk having alternately
8. An accessory apparatus as de?ned in claim 5, in
which said switch includes a movable contact supported
alongside of and in proximity to the edge of the'record,
said switch operating means being an underlay for the
record having. a non-slip upper face, and means on the
edge of said underlay for actuating said movable con
tact, said means comprising a cut-back in the marginal
arranged variations along its extent, a guideway follower,
an electrically operable signal, a signal circuit including 55 region of said underlay, the remainder of the underlay
a make-and-break means, and means carried by said fol
lower and responsive to said guideway variations for
actuating said make-and-break means in step with said
having a diameter greater than that of said record.
9. An accessory apparatus as de?ned in claim 5, in
which said switch includes a movable contact supported
alongside of and in proximity to the edge of the record,
alternations, said make-and-break means comprising a
pair of relatively movable contacts carried by said fol 60 said switch operating means being an underlay‘ for the
lower.
2. An accessory apparatus as de?ned in claim 1, in
which said guideway variations are ridges and depres
sions incapable of conducting electricity, said responsive
means being a pivoted arm having one part in operative
' engagement with the guideway and another part in opera
tive engagement with one of said contacts.
.
3. An accessory apparatus as de?ned in claim 1, in
which said pair of relatively movable contacts are
adapted to come together and move apart in a vertical
direction, said guideway being an upstanding rail and
said variations being relatively elevated and depressed
‘ parts along said rail, said raised and depressed parts being
incapable of conducting electricity, said responsive means
being a pivoted arm whose pivot is substantially hori-~
record having a non-slip upper face, and means on the
edge of said underlay for actuating said movable contact,
said means comprising a magnetic element carried by
said underlay and adapted to cooperate with said movable
contact to move it by magnetic action.
10. The combination ‘with a phonograph turntable
adapted to support and continuously rotate a record there
on, of an electric circuit intermittently actuated in timed
relation to the rotation of said record, said circuit includ
ing a switch alongside of and in proximity to the edge of
.the record, an underlay between the turntable and the
record and movable therewith, and means on the edge of
said underlay for operating said switch at least once dur
ing each revolution of said record.
11. The combination of elements de?ned in claim 10,
75
3,058,748
in which said switch includes a movable contact supported
so as to ibe resiliently biased in one direction, and said
underlay having a marginal edge contoured to engage said
contact ‘and exert greater and less bias-opposing pressure
against it at alternate intervals during record rotation.
12. The combination of elements de?ned in claim 10,
in which said switch includes a movable contact supported
so as to be resiliently biased in one direction and a con
tact-moving element carried on the marginal edge of said
underlay, said element and said contact being magnetically 10
cooperable without mutual engagement.
19
acter described comprising a centrally-apertured non-con
ductive circular disk adapted ‘to ?t on a turn-table, a
raised spiral guide rail on the obverse face of said disk
provided with alternately arranged high and low areas
along its extent, a follower in engagement with said rail
and constrained to move in a substantially radial direction
as the disk rotates, and a movable control arm riding on
said rail and articulated to said follower for up-and-down
movement in response to its encounter with said high and
low areas.
19. An electric make-andebreak device for a circuit to
be energized and de-energized in accordance with a pre
determined sequence pattern, comprising a disk adapted to
which said electrically operable signal comprises an elec—
?t on and be rotated by a turn~table, a raised spiral guide
tric lamp and a counter illuminated thereby, said count
er being provided with means for displaying, upon each 15 rail on the obverse face of said disk provided with alter
nately arranged high and low areas along its extent, said
actuation thereof, the next of a series of sequential indicia,
high and low areas being incapable of conducting electri
said signal circuit including a solenoid for actuating said
city, a follower in engagement with said rail and con
counter.
strained to move in a substantially radial direction as the
'14. A11 accessory apparatus as de?ned in claim 1, in
:disk rotates, a movable arm riding on said rail and artic
which said electrically operable signal comprises a lamp
ulated to said follower for up-and-down movement in re
and a counter, and in which said signal circuit includes a
sponse to its encounter with said high and low areas, and
solenoid for said counter and a convenience outlet relay
a pair of relatively movable electric make-and-break con
for activating optional additional signaling apparatus.
tacts carried by said follower and controllable by the
15. A slave disk of the character described, comprising
a centrally-apertured non-conductive circular element 25 movements of said arm.
adapted to ?t on a turn-table, and a raised spiral guide rail
References Cited in the ?le of this patent
on the obverse face of said element, said guide rail having
alternately ‘arranged high and low areas adapted to impart
UNITED STATES PATENTS
up-and-down movement to a control element riding there
985,943
Sachs ________________ __ Mar. 7, 1911
13. An accessory apparatus as de?ned in claim 1, in
on.
16. A slave disk as de?ned in claim 15, said element
and guide rail being integrally formed of a single molded
plastic body.
17. A slave disk as de?ned in claim 16, therebeing a
similarly formed guide rail on the reverse face of said 35
element.
18. A guide rail and follower mechanism of the char
1,420,928
1,834,886
2,231,938
2,279,119
2,587,970
2,693,520
2,858,388
Jones et a1. __________ __ June 27,
Barton _______________ __ Dec. '1,
Miessner _____________ __ Feb. 18,
Freimann _____________ __ Apr. 7,
Courtis et al ___________ __ Mar. 4,
Bruno _______________ __ Nov. 2,
Eastman ______________ __ Oct. 28,
1922
1931
1941
1942
1952
1954
1958
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