DE1914335U - MAGNETIC DETECTOR - Google Patents

Description

RA. 009 B73 * -B. 1.65 '" ι.

TELES ¹ UIiKElI

Patent exploitation
Ulm / Danube
Elisabethenstrasse, 3

Hanover, 7/4 ° 1961 FK / PV-Bs / he W 2945

Magnetic dictation device with in the miter grooves of the record-like recording medium attachable tape head

They are magnetic dictation devices with guide grooves
provided ₉ record-like recording media
known, in which Z ₀ B ₀ the housing is largely closed and which have a slot for inserting the recording medium = Usually the sound head is attached to a swiveling tone arm as in turntables and has to pass through by hand after inserting the recording medium. Adjustment of a handle protruding from the housing can be used in the first groove.

In a known device of this type, the tonearm is assigned a position outside the recording medium,
in which it can snap into place and in which the tape head is
inevitably located above the plane of the recording medium. Such a set position outside of the recording medium is useful on the one hand to facilitate the insertion of the recording medium and, on the other hand, by pivoting outwards at the same time, the
Centering and holding device for the carrier are released,

2 -

RA. ÖSE814 * 2/25/65; >

\ j _ ■ " ..: JuL * yi * \ ■■■: ■ ::. y _: ,. ; _; : .. ■: '-' ■

13 260 / 42g G-bm l »^ ···" · "* ^ '""^' .-. Hanover, -.den 23. -vFebr. .'196S ^: -

New page ■ 2

_λ -, ... for which one would otherwise have a separate; Need to handle. _r '- would. In addition, it is avoided that the recording medium and the sound head can be damaged, since the recording medium at.

y attached tape head still from the centering device: held-

'% -,' ■ ■. .. '■' ^■: - ■ .. ■■ ·. ^"■::. ■■■ - ^':: :: -." ■. ^; ::, Fi is and cannot be removed from the device. The .... "S ehaitfunktions for recording-playback-halt-rewind; can be controlled with; yj .. pichen dictation machines in general by one or several switches provided with microphones. / ■■ -. '/' , / _ .

5 "It has now been shown that the dictator frequently after the". \ [ Crerä.t through the main switch. switched on- -Wouldj his attention * -; - ". '· *. which he-. £ necessary tax transactions of the ^: in his hand, -being. \ Microphone can be run. The dictation will then appear under. ; ^; :

Circumstances after pressing the button "for recording, begonneii without '· _ that the tape head is on the record carrier on :,, ..- sö'.daß-' one _..":

Recording does not take place .; . ■. ^: .. ■■ '. - - / - ■■■ '

This deficiency is remedied by the innovation dadureh-ab that on the. Tonearm .or .: ■ V sound head a contact spring element in such a way: is attached that.ös in the Jlastgtstellung of the tonearm rests against a G-egenkontakt., ^ The

^ Contacts are to be connected in such a way - that they form a circuit; to er-. '".-

"% -, procreation elites preferably acoustic warning signal of the" Effects j ^ \ bring, if the device is gesohaitet to ^lead; the. Soundhead .. "".

but is still in its resting position - ·. "· .-

~ 2a -: '. ■.' ■■; .-. W 2945 "

le let »WS3? feti Silctlerger & t · !! n & t be & d · »taw« äraJrtfö seigern. ltif * # iölmusgetr% i «· befeaimt * by means of"iner'faete eiix-Sigjaal " WMX Anieige" latr Korrelctiir "öÄsr a DiJitataaf a" gs. "on SU * .-« «you feeir * the booth of the Atifaeiölmusgsfeapasdltät- 4urobVV irritated

8κβ «· 3? «Jmatieoh anitusstigea * 'Hiej? step «read

Aöfa * l »« 8tellimg iMffi # r with "the Auf & e & etomigstragea? Ia
let · Dl * ls * kjm®.t & n means are zwa * £ 3su8g
g *% * ebemeowtnig gteigiiet like
luwa & vL S0iimllplatt «n0ptel« rs aagaordaete
di · το »d« r Sofiiallplattenrillö gefötot tmä "bei © rröioJien" 4er l »afrille taetÄtlgt wird» um öae lifting lma-äadtiX '^ b'll'be ^ a

the

- 3 - -. - -W 2945

Pie -mg is explained below using the .in the drawing illustrated embodiment explained in more detail. 1 shows in perspective a dictation machine with the parts of interest, some of which are schematized, and FIG Figo 2 and 3 is an example of the execution of the Warning device shown.,

1 denotes the housing of a dictation device for record carriers in the form of hall plates, which are inserted into the device through a slot 3 of the housing 1, which is closed on all sides, and can be fixed on the turntable 2 by means of a centering device 18. Above the slot 3 there is a recess 4 which is adapted to the width of a fingertip and which facilitates the insertion of the recording medium up to the end position it can circulate with the recording medium. The sound head 8 is mounted in the frame-like front part 7 of a tonearm 5, which is pivotable about an axis 6 and means of ¹ one from the. The housing can be pivoted about the axis 6 through a slot protruding from the handle 13. A latching position is assigned to the tonearm at the right ¹ outer end of the slot 12, in which the audio head 8 is located outside the recording medium. Means shown important ensure 'that the lever 14 of the handle in

- 4 - .. ■ W 2945

this position is pivoted about the axis 11, so that the sound head 8 pivotable about the axis 10 is lifted from the 4th level of the sound carrier - "A likewise not shown, The lever attached to the tonearm is in this position against the angled end 2o of the centering lever 15 placed and lifted this from the recording medium.

On the sound head 8, which is held isolated in the sound arm 5, there is a zontact arrangement 9a consisting, for example, of a spring wire? 9 "b ₅ which in the east position with the end 9a a fixed stop on the housing, lying at ground potential, e.g. the housing itself. The metallic shell of the sound head 8 is connected to one of the feed line 23 of a buzzer 21, the other feed line 22 via a switching contact the microphone switch was connected to a power source '""

If the device is now switched to recording by the microphone switch before the start of a dictation and the sound head 8 is still in its east position, then the contact 27 (I ¹ Ig = 2), which like the microphone 28 via lines 26 with Sockets 25 of the device is connected, the buzzer 21 is placed on a winding of the transformer 24 as a result of the still closed contact 9a and emits an acoustic signal.

- 5th

- 5 - W 2945

Instead of a buzzer, the microphone itself can also be used to generate the acoustic warning signal. in that, for example, "as shown in Fig. 3, through the contact 29 in the latched position of the tone arm the hot The end of the microphone coil is placed on the starting magnet 30 via a suitable protective resistor 39.

The same warning device can also be used to indicate the imminent end of the term, by, for example, the contact spring with its end 9b with one or more squats 19> those on the centering disc 18 are attached, comes into contact periodically as soon as the sound head moves through a certain angle moved inside. In this case, the current circuit for the warning device must also be switched to playback Device to be effective «The cams 19 are in the same position Housing-fixed stop on ground potential

- 6

Claims (1)

si? .- '. ^ l New protection claim ".." ■ "-.-..- Γ; ί.ΐ Magnetic dictation machine, "in which the sound head is increased by two. .. ; .-: '. l |'; '- axles that are perpendicular to each other are rotatably mounted * that he. 'c''S $ ^: / perpendicular to the record carrier and parallel to it in a Γ i '' outside of the recording medium 'hast position / pivoting * ■ - ■■■ λ ·· '■■ bar, characterized in that the tonearm pd; er son head fi- _: *. _; Contact spring element is arranged so that it is in, the East. position of the tonearm is in contact with a walking contact. .