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Патент USA US2506557

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May 2, 1950
E. WENNERBO
2,506,555
RECORD CHANGING MECHANISM FOR PHONOGRAPHS
Filed July 31, 1944
2 Sheets-Sheet 1
F/E’ 1
'
- 171NVENT0R.
fw/r WENNEEEO
BY
2% £4447 ‘
ATTOK
I May 2, 1950
v
E. WENNERBO
2,506,555
RECORD CHANGING MECHANISM FOR PHONOGRAPHS
Filed July 31, 1944
2 Sheets-Sheet 2
INVENTOR.
[SK/A” WEN/YL-‘(BO
ATTOIZN EY~$
f’atented May 2,
2,506,555
"UNITED ‘STATES PATENT OFFICE
Erik Wennerbo, .Motaia, ‘Sweden, assignor .to‘
Industriaktiebolaget Lux'or, <Motala,‘ ‘Sweden, ;.a
corporation of Sweden
Application July 31, 1944; Serial No. v547,365
‘
'
'
In'Swedeii August 3, 1943
vreclaims. (01. 274-10)
1
The present invention relates to record chang
and readily putiinto. e?ec't-a: preferred formetheree
of will now‘sbe described .-for illustrativeipurposes
ing'mechanism ‘for phonographs andmore par
ticularly-to thattype of ‘mechanismin .whicira
record magazine positioned oveizthe turntable is
adapted to support .a sequence of records in
drawings in which:
Fig‘. lis a diagrammatic planaview of theimeche
stacked iormation from which'one record _at.a
anism accordingto'th'e;invention,
only, reference being 1 had to‘ the i. accompanying
time'may‘be laterally displaced and thereby be
deposited into playing‘ position ‘on the turntable.
Such phonographs necessitate means-for retain
other operative position Offthe mechanism,
ing the imagazi-ned records :in their initial .posi- -
tion in the’ magazine during the displacement and
release of the bottom-most irecord therefrom.
Hitherto such ‘means generally comprised .a
cranked or offset central vpost projecting -.up
Fig. 4L is a. diagrammatic-sideview of a1 modi?ed
form of the lateralistop-means according tothe
invention,
‘
'
Fig‘ 5 shows-the samemechanism assho'wn in
Fig.4, but. as seen"fromaabovaiand
.
Fig. 61 is a diagram-m’atic-side,Viewv ofamodi?ed
form of :the ‘invention.
wardly-i-rom - the - turntable, ‘ the - sequence. of rec
OI'dStO be vplayed-being threadediin stacked for
mation on said post and supported by theoffset
thereof. The-dispensation {with a centralpost of
this nature will, however, ‘ia'cilitate. the handling
iflith I referencev now-i: to the. drawings:
of the "phonograph. ‘It-is obviously much more .,
convenient to load themagazinebywplacing: the
sequence of records’ in container. ?tting to the
records than tothrea'dzthemone byone-onto a
post. The dif?cult'y encountered when construct
.
Fig. 2.-is a diagrammatic ‘side‘view; of same,
‘Fig. 3' is a similarview tozFig. 12, showingam
-
The reference numeral 1|" representsa batchor
sequence of records=to.be;p1ay.ed. 'Thebatch _-I
is supported by three‘ support members 2,,;3 and
Li, the s‘'upporting.members-2andxii~ being carried
by standards 5 and; 6, respectively,projecting up=
rightly from the bottom plateof the phonograph,
fecti've-sto'p meansthatwill prev'ent'lthe lateral
not shown in the drawings. The supporting
member .4 comprises alicentral postvp'rojecting 11p‘
Wardly from the c'entreiofathexturntable of the
displacement of all érec'ords ; in the magazine 1 ex
phonograph, 7 said ‘post being adapted . to revolve
cept-the botto'mmost ‘one. ‘during a record} chang
with. theturntab1e.or-.:to lee-motionless. The batch
when, it is desirous thatlthe phonograph .shalllbe
members ' 1,18 ~.andj:9,> of which ;the-,mem~bers 1 and
able to play a sequence of records of various
8 comprise rounded. off,conesaprojecting'upwardly
from standards 5- anda??respectively. Thememe
ing such‘ a devicelis,zhowever, "to-provide an,- ef
ing'ioperation. This'dif?eulty;isegreatlyeenhanced
sizes; besides this,- c‘onsiderationi'nust beugiveni to
thefact- that'not all records‘a're-plane, it some
times occurring that vrecords .are somewhat
warped ‘owingv to undue exposure to “heat.
"It ‘is ‘an *object of the invention to {provide
means for overcoming these di?iculties.- Theiin
vention' comprises a lateral’ stop, means-positioned
i of records is i guided laterally :by ' three :guide
her 9 is supported by a third standard 10
mounted on thenbottomiplateof the-phonograph,
not shown. Theiguidemember 9 does not extend
to theibottommost;recordin;the magazine. -Ac=
cording ‘ to‘ the invention-there is: below. the mem
ber t a suitablysha-ped, movable lateral :sto'p
in alignment with the direction of ‘displacement
means ii (.see:Fig.~.2‘)‘. 'pTheilateral stop ll ‘is
of the - bottommo‘st vrecord in i‘ the magazine and 40 mounted on a pivot‘ pin Rolando-elongated iorvproe
adapted- to ‘permit a: lateral displacement- and re
viding an extension ii'j3. i'l‘heilateral :stop 1 I and
lease of the - 'said- bottommost record, ' but - at the
its extension i3 ‘are=rbtatab1eabout?the pin l2
same time impede a displacement/of at- least the
and rotate in aslot Mlprovide'd'in thestandard
bottommost record-but one‘ in the magazine. The
H]. The 1ate1~a1stopi I‘ an’d'its' extension l3 are
main characterizingefeature ofvthe‘ invention ‘is 45 under thecontrol o'f-.a spiral springii? which is
that the‘ stop means visadaptedtocoacti-with a
‘positioned inéani enlargement 1150i the ‘slot :14
member, ‘which under‘ the'l'influence of resilient
provided aboutithe-pin i2. 'Thiskspring“ tends-to
pressure derived from a spring or thelik'e is nor
mally held ‘in such a‘position- that one end-theref
tensionlSi will‘ engage the-underside of the'bote
of will abut ‘the underside ofethe-bottommost rec
ordin'the magazine, the'other endthereof being
normally held at'asubstantially constant dis
tance above the upper ‘surface of the-'bottommost'
rotate the step»! ianticlock‘wise, so thatthe sex->1
50 tommost record in the magazine wit-haslightiree
silient pressureyas" 'WiII-be‘apparent from Fig; 2.
Thereby the end ofvlthellateral ab'utmentllv will
normally alwaysbe situated a- constant distance
above'the plane; of- the upper side ofi thesaidflow
7So that the inventionmay be easily understood 55 Termost record, even though‘s'uch a recordém'ay
record-in the magazine.
‘
'
_
2,506,555
3
1i
4. It is also possible to mount the central post
4 detachably for facilitating the removal of the
be somewhat warped owing to undue exposure to
the heat of the sun or the like. When there is
no record on the supporting members, the lateral
stop I I will be rotated to such an extent clockwise
records.
By arranging the members 9, II and I3 mov
able in an upward direction one may, however,
enable the records to be lifted straight up, when
they are to be removed.
Figs. 4 and 5 show a mechanism modi?ed for
this purpose. In this modi?cation of the inven
tlon the standard In is provided with two slots
I4and 23. Within the one slot I4 the lateral
stop I I and its extension I3 are rotatably mounted
about a, pin I2. A spiral spring 26 retains the
lateral stop when not in contact with a record, in
such a position in which it is turned somewhat in
by the spiral spring 26 as permitted by the lim— CI
iting surface It of the slot I4. Through the
standards 5 and B extend rotatable shaft mem
bers I‘! and I8 respectively. Each of these shafts
I1 and I8, respectively, is provided immediately
above the support 2 with a wing member I9 and 10
20 respectively, the wing members being adapted
to displace the bottommost record in the maga
zine laterally towards the left on rotation of the "
shafts I‘! and I8. The wings I9 and 20 are mova
ble in recesses 2| and 22, respectively, provided 15
anti-clockwise direction from the position it as
in the conical guide members 1 and 8, respec
tively.
'
_ sumes when a sequence of records is placed on
~
the supports provided therefor. From this lat
ter position the lateral stop I I and the extension
When the phonograph is to be loaded, records 20 I3 may be rotated both clockwise and anti-clock»
wise. In the other slot 23 the guide member
are placed in the container‘ or magazine, whose
28 is rotatably mounted on a pin 24. The mem
bottom comprises the supporting members 2, 3
ber 28 is held in such a normal position by a
and 4, and whose sides comprise the guide mem
spring 27 that the underside of the member 28
bers 1, 8 and 9. The mechanism then assumes
the appearance illustrated in Figs. 1 and 2. When 25 will abut a pin 25 provided on the standard II).
Figs. 4 and 5 show the position of the members
a new record is to be deposited onto the turntable,
of the mechanism at that moment when a se
the shaft members I1 and I8 are rotated by the
quence of records is about to be lifted from the
intermediary of record changing mechanism (not
turntable (not shown). At‘ the moment illus
shown in the drawings)-shaft I'I anti-clockwise
and shaft I8 clockwise-whereby the wings I9 30 trated in the drawings, the lateral stop II and
the extension I3 have been urged aside by the
and 20 displace the bottommost record in the
batch of records I, whilst the member 28 is just
magazine toward the left until the central hole
about to be swung back. When the batch of
therein reaches the central post 4 and the edge
records is removed, both the member 28 and the
thereof simultaneously leaves the support mem
bers 2 and 3. The record will then glide down 35 lateral stop II are drawn back to their respective
normal positions by their respective spiral springs
the central post 4 onto the turntable (not
26 and 21.
.
shown). On displacement of the record to the
During the falling of the record onto the
left, the left hand edge of the record will pass
turntable, the member I3 exercises a retarding
underneath the lateral stop II. The left hand
stop member however obstructs the passage of 40 effect on the left hand side of the record. The
record is therefore always prone to fall onto the
the‘ bottommost record but one, so that the lat
turntable in an askew or inclined position, which
ter cannot accompany the bottommost record
might cause a noisier engagement of the falling
on its lateral travel. When dropping from the
record and the turntable or the record already
magazine to the turntable the record retains en
on the turntable than if the record were allowed
gagement with the member I3, and rotates the
or caused to retain its horizontal positionwhilst
latter and the lateral stop II about the pin I2
falling. In order to counteract such a tendency,
against the action of the spiral spring 25 dis
the central pin 4 (see Fig. 6) may incline towards
posed about the said pin. Fig. 3 shows the rela
The above described mechanism operates in the
following manner:
'
-
' tlve positions of the magazine andthe various
parts of the mechanism during a record chang
ing operation immediately. before the member
I3 slips outof contact with the left hand edge
the left hand side of the record or towards that
point in which the member I3 and the lateral
stop I I are positioned. The record will then have
a tendency to fall with its left hand edge fore
most, which tendency, however, will be balanced
or neutralized by the retarding effect of the mem
of the record.
When a falling record reaches the turntable
the lateral stop II and the member I3 are urged 55 ber I3. In this case the central pin 4 must obvi
back into normal position .(Fig. 2) by their spring.
The wings I9 and 20, which during the fall of
the record have assumed the position shown in
Fig. 3, are returned to the position shown in
Fig.2 by record changing mechanism, not shown 60
ously be fixed, i. e., not be rotatable with‘the
turntable.
_
I
I
a
the central post 4 (Fig. 3), again falls onto the
..If a phonograph according to the inventionis
to be used for the changinglof records of various
diameters, the standards 5, 6 and ‘I must be mov
able, so that they may be adjusted to various dis
tances from the point of the central pin 4 accord
ing to the various sizes of the records. A com
mon adjusting member adjustable to de?nite
support members 2 and 3. All members have thus
returned to the position shown in Fig. 2, and the
The mechanism according to the invention may
in the drawings, whereby the sequence of records
in the magazine, which during the falling Of the
record was supported by the wings I9 and 28 and
next record changing operation may take place
in a manner analogous to that described above,
as soon as the changed record has been com—
positions is then preferably provided.
4
advantageously be used for automatically stop
ping the phonograph when all records in the
magazine have been played.
For this purpose.
70 themember I3 is adapted to assume a somewhat
higher position when there are no records on the
When all records in the magazine have been
pletely played.
_
e
,
played, they may be removed by lifting them in
such a manner that their right hand edge ?rst
comes above the supports 2 and. ,3, .until the cen
supports than when actuated by a record. When
all the records in the magazine have been played,
the member is urged into this higher position.
tral holeof the records has left the central post 15 Thereby it may be caused toiactuate any well
‘known-arrangement :adapted “to impart an :im
and iinithe?: magazine is zlaterallydisplaced-ductile
l-pulse to‘?a stopping rmechanism after rtherlast
decor-din ‘the :batch has 'been'ép'layed.
giAlthough fonily 'azlimited [number ofiforims of; the
iaboveifinvention have beenrdescribed, it is ob
viou's ‘that various modifications ‘thereof may be
i‘carriedrout withinthescope of the invention and
the appended'claims.
What I claim and desire to secure-byiLetters
~Patent Sis:
*cours'e :rofi every ‘record changing-operation rand
iitlrereby ire'leasedlfrom theimagazinezand dropped
:onto the turntable, :in combinationia -rsupportia:t
one sideio‘f the magazine; ;a pin carriedbyrsai’d
l-range'd
:supports,
substantially
:an-Jasymmetric
iatri'ght
icrescentimember
angle'sito *therplane
of 'lrecords and ‘with a acircularlrecess .betweenithe
‘two itipsof the crescentnmemb'er normally fac
,
i-inig Ythe vrecords in the magazine, J said ‘asymmet
1. In an automatic record ‘changing mecha
inismf-for phonographs in which a sequenceio'f 're'c
or'ds vIto ‘be deposited one vat a time onto the turn
ric crescent-member sbeing rotatablyl'mountediacn
‘said pin at "a ~pointsubstantia1lyrdiametricallyzcp
'1“table-of the phonograph are supportedii'n ‘stacked
formation in a ‘magazine over ‘the turntable and _:
"{infwhich the bottommost record in the magazine
11s :la'terally displacedin the course of every record
bhanging operation and therebysrele‘asedLfrom’the
‘magazine and dropped “onto the turntable, in
‘posite to said recess, and spring ‘means for-more
Finally ‘retaining said Iasymmetric :‘crescent fm'emi
"her with its lower tip against the underside of
isa'id fbotto'm'most record :and thereby holding fthe
iupper tip of saidycre'scenti member just aboveith'e
'upperrsurfa‘ce Of-saidLb'OttOmm'Ost record,1the1up
per tip thus allowing alater'al displacementw'oi'
Fcombina'tion, ‘an 'r'ipstanding-su'pport; a pin car 1,20 the-‘bottommost irecord : into said < recess, but pre
i-rlied by said support, an asymmetric crescent
iventingalateralidisplacementofthe record above
member rotatably mounted intermediate its ends
fs‘aidiibottommos‘t record, saidasymmetric crescent
on said pin, spring means for normally retain
ime‘inb‘er ‘by rotatingzagainsti’action ofrsaidrspring
ing said asymmetric crescent member with its
‘means permitting ‘the “bottommost ‘record ‘to :drop
recess facing the record magazine and in such a . Ionto ‘the turntable.
position that the lower end of said crescent mem
'4. In an automatic record changing mecha
her will normally abut the underside of ‘thesaid
‘nism for Iphonographs in :which a sequence :of
bottommost record and thereby hold the upper
{records to-‘be ‘deposited one at -a ‘time ontozzzth‘e
end thereof just above the upper surface of said
iturntable of the phonograph :are isupportediiiin
bottommost record in the magazine, so that the ;' stacked formation in a stationaryima'gazine over
upper end will permit a lateral displacement of
the iturntable and ‘in which the bottommost-mec
said bottommost record into said recess but pre
ord in theimagazine is laterally ~'clispla'cedainith‘e
‘vent-a lateral-displacement of the record above
‘course or every record:ichanging lopera'tionaand
said 1‘bottommost > record, stationary abutment
‘thereby =~released i from the" magazine and dropped
means for limiting the rotation of said spring ac- - onto the turntable, in combination a support at
tuated crescent member when the magazine is
one side of the magazine, a pin carried by the
empty, a second pin carried by said support and
support, an asymmetric crescent member ar
positioned adjacent the perimeter of the batch of
records in the magazine and extending substan
tially at right angles to the axis of said batch of
records, a guide member extending inwardly to
a point substantially above the upper tip of said
crescent member in its normal position with the
records in the magazine and mounted for rota
tion on said second pin, a stop for said guide
member, and spring means for urging said guide
member against said stop therefor.
2. In an automatic record changing mecha
nism for phonographs in which a sequence of
records to be deposited one at a time onto the
turntable of the phonograph are supported in
stacked formation in a stationary magazine over
the turntable and in which the bottommost rec
ord in the magazine is laterally displaced in the
course of every record changing operation and
thereby released from the magazine and dropped
onto the turntable, in combination, a support at
one side of the magazine, a lateral stop member
pivotally carried by the support about a horizon
tal axis and permitting lateral displacement of
said bottommost record but preventing displace
ranged substantially at right angles to the vplane
of records and with a circular recess between the
40
two tips of the crescent member normally fac—
ing the records in the magazine, said asymmetric
crescent member rotatably mounted on said pin
at a point substantially diametrically opposite to
said recess, and spring means for normally re
taining said asymmetric crescent member with
its lower tip against the underside of said bottom
most record and thereby holding the upper tip of
said crescent member just above the upper sur
face of said bottommost record, the upper tip
50 thus allowing a lateral displacement of the bot
tommost record into said recess but preventing a
lateral displacement of the record above said
bottommost record, said asymmetric crescent
member by rotating against action of said spring
55
means permitting the bottommost record to drop
onto the turntable, and stationary abutment
means for limiting the rotation of said spring ac
tuated crescent member when the magazine is
empty.
60
5. In an automatic record changing mecha
nism for phonographs in which a sequence 01'
ment of at least the record above said bottom~
records to be deposited one at a time onto the
most record in the magazine, and said lateral
turntable of the phonograph are supported in
stop member having means contacting the under
stacked formation in a stationary magazine over
side of the lowermost record in the magazine to 55 the turntable and in which the bottommost
settle the position of the lateral stop member in
record in the magazine is laterally displaced in
order to hold said member at a substantially con
the course of every record changing operation and
stant distance above the upper surface of the
thereby
released from the magazine and dropped
undermost record in the magazine.
onto the turntable, in combination a support at
3. In an automatic record changing mecha 70 one side of the magazine, a pin carried by the
nism for phonogr-aphs in which a sequence of
support, an asymmetric crescent member ar
records to be deposited one at a time onto the
ranged substantially at right angles to the plane
turntable of the phonograph are supported in
of records and with a circular recess between the
stacked formation in a stationary magazine over
two tips of the crescent member normally facing
the turntable and in which the bottommost rec 75 the records in the magazine, said asymmetric
2,506,555?
:crescent member rotatably mounted on'said'pin
.fatapoint substantially diametrically opposite to
8
records in the magazine, said asymmetric ores’
cent member rotatably mounted on said pin at
a point substantially diametrically opposite to
said recess and spring means for normally retain
ing said asymmetric crescent member with its
lower tip against the underside of said bottom‘
ord and thereby holding the upper tip of said
most record and thereby holding the upper tip of
crescentmemberjust above the upper surface of
said crescent member just above the upper sur
said bottommost record, the upper tip thus allow
face of said bottommost record, the upper tip
ing a lateral displacement of the bottommost
thus allowing a lateral displacement of the bot
record into said recess but preventing a lateral 10
tommost record into said recess but preventing a
displacement of the record above said bottom
lateral
displacement of the record above said bot
most record, said asymmetric crescent member
tommost record, said asymmetric crescentjmem
‘ by rotating against action of said spring means
ber by rotating against‘ action of said spring
permitting the bottommost record to drop onto
‘the turntable, and stationary abutment means for 15 means permitting the bottommost record to drop
onto the turntable, stationary abutment means
limiting the rotation of said spring actuated
said recess, spring means for normally retaining
:said asymmetric crescent member with its lower
.tip against the underside of said bottommost rec
‘ crescent member when the magazine is empty to
approximately the same position it normally as
‘ ‘sumes when the magazine is loaded.
~ . 6. In an automatic record changing mecha
‘ for limiting the rotation of said spring acuated
crescent member when the magazine is empty,
and a guide member positioned vertically above
said crescent member and extending inwardly to
a point substantially above the upper tip of said
crescent member in'its normal position with rec,
nism for phonographs in which a sequence of
records to be deposited one at a time onto the
ords in the magazine.
'
turntable of, the phonograph are supported in
ERIK WENNERBO.
stacked formation in a stationary magazine over
the turntable and in which the bottommost record 25
REFERENCES CITED
inthe magazine is laterally displaced in the course
The following references are of record in the
of every record changing operation and thereby
?le of this patent:
'
'
.
‘released from the magazine and dropped onto
the turntable, in combination a support at one
UNITED STATES PATENTS ,
side of’ the magazine, a pin carried by the sup 30
Number
Name
Date
port, an asymmetric crescent member arranged
1,887,309
Kincannon ________ __ Nov. 8, 1922
substantially at right angles to the plane of rec
'ords and with a circular recess between the two
tips of the crescent member normally facing the
2,062,396
Carson ____________ __ Dec. 1, 1936
2,300,668
Habegger __________ __ Nov. 3, 1942
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