CH141085A

CH141085A - Portable talking machine.

Info

Publication number: CH141085A
Authority: CH
Inventors: Limited The Gramophone Company
Original assignee: Gramophone Co Ltd
Priority date: 1928-09-19
Filing date: 1929-07-11
Publication date: 1930-07-15

Description

  

      lIachine    parlante portative.    La présente invention a pour objet une  machine parlante portative. Elle a pour but  la réduction -de l'encombrement :de     ce    type  de machines parlantes.  



  On a déjà établi des machines parlantes  portatives d'encombrement réduit compre  nant une planchette portant le moteur et le  porte-disque et     .ùsposée,    quand la machine  ne     fonctionne    pas, suivant un plan incliné  vers l'arrière,     @de    manière à ménager une  place pour le     logement    du bras acoustique.

    Dans les machines parlantes de ce type, la       planchette    portant le moteur et le     porte-          disque    est ramenée dans un plan horizon  tal pour l'audition, par exemple au moyen  de leviers commandés par le soulèvement du  couvercle de     l',app,areil:          Dans    la machine, objet de la présente  invention, ces leviers ou tous organes équi  valents utilisés jusqu'à ce jour pour déplacer  la planchette portant le moteur, n'existent  pas.    La machine parlante portative suivant  l'invention est caractérisée en ce que le       trorte-disque    est disposé d'une manière per  manente suivant un plan incliné par rapport  à l'horizontale.  



  Le dessin annexé représente, à titre  d'exemple, une forme d'exécution de la ma  chine.  



       Fig.    1 en est une vue latérale, en posi  tion .de fonctionnement;       Fig.    2 est une vue en plan correspon  dante, le couvercle étant supposé enlevé.  La machine parlante portative représen  tée comprend une boîte 1 et son couvercle 2,  le plan séparant la boîte et son couvercle  étant incliné sur l'horizontale en montant  depuis l'arrière jusqu'à l'avant du meuble  ainsi qu'on le voit en     fig.    1.  



  La     planchette    .du moteur 3 affleure le  bord supérieur .de la. boîte et porte, un peu  au-dessus de lui, le porte-disque habituel     4-          qui    est parallèle à la planchette. Le bras      acoustique 5 portant la boîte acoustique 6 est  articulé de manière à pouvoir se .déplacer  tant verticalement qu'horizontalement; il est  porté par un support 7 .disposé dans l'un des       coins    arrière de la planchette 3 et, pendant       l'audition,    le bras acoustique est dirigé vers  le haut et se trouve placé obliquement au  dessus du disque .disposé sur le porte-disque  4.

   Le bras     acoustique    est relié avec l'entrée  8 -du cornet amplificateur 9 disposé     au-          dessous    de la planchette 3; le     cornet    9 a une  forme telle qu'il dirige les ondes .acoustiques  suivant un chemin incurvé qui traverse d'a  bord latéralement la boîte 1 et     revient    en  suite vers l'avant où l'ouverture du     cornet    9  occupe à peu près toute la surface latérale:  <I>du</I> .côté avant de la boîte 1.  



  Une porte 10 est articulée sur le bord  avant inférieur Il de la boîte 1 et peut fer  mer l'ouverture du cornet 9 quand on n'uti  lise pas la machine; cette porte 10 présente  des secteurs de fermeture 12 disposés à angle  droit par rapport à la porte 10 -et     formant     avec elle un prolongement du cornet 9     pen-          d.ant    le fonctionnement -de la machine. Quand  la porte 10 est ouverte, elle est dirigée vers  le haut de manière à renvoyer le son vers  le haut.  



  On peut disposer des pinces 13 sur la  porte<B>10</B> pour retenir commodément des acces  soires tels que la manivelle de remontage  14, etc.  



  Le bras acoustique pouvant tourner dans  le support 7 disposé dans l'un des coins ar  rière de la planchette 3, on voit aisément que,  lorsque le style de la boîte acoustique 6 est  amené à reposer sur le     :commencement    de la  ligne :des inscriptions acoustiques du disque  porté par le     porte-disque    4, le bras 5 se  trouve dirigé vers le haut, à peu près paral  lèlement aux côtés latéraux de la boîte 1, et,  pour cette     position    qui correspond très sen  siblement à :l'équilibre, le bras acoustique 5  n'a pas ou n'a presque pas tendance à tour  ner sous l'action .de la pesanteur.  



  Toutefois, quand l'audition commence, le  bras 5 se trouve déplacé de     .cette    position  d'équilibre et a tendance à tourner .autour de    son support sous l'action ,de son propre poids  dans la .direction même qui     .correspond    au dé  placement nécessaire à     l'audition    de l'exté  rieur vers le centre du disque. Cette disposi  tion permet de soulager les parois du sillon  formant la ligne des inscriptions acoustiques  du travail qui consiste à guider le bras acous  tique 5 et la boîte acoustique 6, ce qui réduit  l'usure subie par le disque.  



  Un autre avantage dû au montage décrit  du bras     acoustique    réside en ce qu'il permet  l'utilisation     d'un    bras acoustique plus long.  



       Quand    la machine ne     fonctionne    pas, le  bras acoustique 5 est     iumené    dans une posi  tion pour laquelle il .est disposé au-dessus de  l'extrémité .arrière de la planchette 3     OÙ    il est  maintenu par une pince 15; la boîte     u:cousti-          que    est en même temps maintenue au-dessus  d'un plateau peu profond 16 disposé dans une       ouverture,de    la, planchette 3 et présentant un  fond perforé destiné au logement -du style.  



  Dans cette position, le bras acoustique 5  et la boîte acoustique 6 se trouvent au-dessous  de la partie la plus haute du couvercle     \?    à  l'intérieur de laquelle ils sont logés quand le  couvercle 2 est fermé.  



  Le fait que la planchette portant le mo  teur vient affleurer le bord     @de    la boîte 1 per  met l'utilisation de disques ayant un     dit-          mètre    plus grand que la largeur de la boîte  La. boîte 1 présente avec son couvercle 2  fermé la. forme     para.llélépipédique    habituelle  et la surface     -de    contact du couvercle \? et -de  la     boîte    1 coïncide à peu près avec les bords  de la planchette 3;

   ainsi le couvercle est plus  haut à     l'a.rrière    qu'à l'avant et il y a assez  de place à l'intérieur de la partie arrière -du  couvercle pour loger le bras acoustique quand  le couvercle est fermé, la. hauteur totale du  meuble ainsi formé demeurant toutefois la  plus faible possible.



      The portable talking machine. The present invention relates to a portable speaking machine. Its aim is to reduce the size of this type of talking machine.



  Portable talking machines of reduced size have already been established comprising a board carrying the motor and the disc holder and placed, when the machine is not working, in a plane inclined towards the rear, so as to provide a room for housing the acoustic arm.

    In talking machines of this type, the board carrying the motor and the disc holder is brought into a horizontal plane for hearing, for example by means of levers controlled by the lifting of the cover of the, app, areil: In the machine, object of the present invention, these levers or any equivalent members used to date to move the board carrying the motor, do not exist. The portable talking machine according to the invention is characterized in that the disc trorte is disposed in a permanent manner in a plane inclined with respect to the horizontal.



  The appended drawing represents, by way of example, an embodiment of the machine.



       Fig. 1 is a side view thereof, in operating position; Fig. 2 is a corresponding plan view with the cover assumed to be removed. The portable talking machine shown comprises a box 1 and its cover 2, the plane separating the box and its cover being inclined to the horizontal while rising from the rear to the front of the cabinet as seen in fig. 1.



  The engine board 3 is flush with the upper edge of the. box and carries, a little above it, the usual 4- disc holder which is parallel to the board. The acoustic arm 5 carrying the acoustic box 6 is articulated so as to be able to move both vertically and horizontally; it is carried by a support 7. disposed in one of the rear corners of the board 3 and, during the hearing, the acoustic arm is directed upwards and is placed obliquely above the disc .disposed on the holder. disc 4.

   The acoustic arm is connected with the input 8 of the amplifier horn 9 placed below the board 3; the horn 9 has a shape such that it directs the acoustic waves along a curved path which first crosses the box 1 laterally and then returns to the front where the opening of the horn 9 occupies almost the entire side surface: <I> of </I>. front side of box 1.



  A door 10 is articulated on the lower front edge 11 of the box 1 and can close the opening of the horn 9 when the machine is not being used; this door 10 has closing sectors 12 arranged at right angles to the door 10 -and forming with it an extension of the horn 9 during operation -de the machine. When the door 10 is open, it is directed upwards so as to return the sound upwards.



  Pliers 13 can be placed on the door <B> 10 </B> to conveniently retain accessories such as the winding crank 14, etc.



  The acoustic arm being able to rotate in the support 7 arranged in one of the rear corners of the board 3, it is easily seen that, when the style of the acoustic box 6 is brought to rest on the: beginning of the line: inscriptions of the disc carried by the disc holder 4, the arm 5 is directed upwards, approximately parallel to the lateral sides of the box 1, and, for this position which corresponds very sensitively to: balance, the acoustic arm 5 has no or hardly any tendency to turn under the action of gravity.



  However, when the hearing begins, the arm 5 is displaced from this position of equilibrium and tends to rotate around its support under the action of its own weight in the same direction corresponding to the die. placement necessary for hearing from the outside towards the center of the disc. This arrangement makes it possible to relieve the walls of the groove forming the line of the acoustic inscriptions of the work which consists in guiding the acoustic arm 5 and the acoustic box 6, which reduces the wear undergone by the disc.



  Another advantage due to the described mounting of the acoustic arm resides in that it allows the use of a longer acoustic arm.



       When the machine is not working, the acoustic arm 5 is iumené in a position for which it .is disposed above the rear end of the board 3 where it is held by a clamp 15; the acoustic box is at the same time held above a shallow tray 16 arranged in an opening in the board 3 and having a perforated bottom intended for the housing of the style.



  In this position, the acoustic arm 5 and the acoustic box 6 are located below the highest part of the cover \? inside which they are housed when the cover 2 is closed.



  The fact that the board carrying the motor comes flush with the edge @of the box 1 allows the use of disks having a diameter greater than the width of the box. The box 1 present with its cover 2 closed. usual para.llélepipédique shape and cover contact surface \? and of box 1 approximately coincides with the edges of board 3;

   thus the cover is higher at the rear than at the front and there is enough room inside the rear part of the cover to accommodate the acoustic arm when the cover is closed. total height of the cabinet thus formed, however, remaining as low as possible.

Claims

CLAIM Portable talking machine, characterized in that the disc holder is permanently arranged in a plane inclined relative to the horizontal. SUB-CLAIMS 1 Talking machine according to claim, characterized in that it comprises a box having, fixed on it,

a plate which carries the motor and the disc holder and which is also permanently disposed in a plane inclined with respect to the horizontal. 2 Talking machine according to claim and sub-claim 1, charac terized in that the box is deeper at the front than at the rear, the cover being higher at the rear than at the 'before.

3 Talking machine according to revendicatioi3 and the sub-claims 1 and 2, character ized in that the board carrying the motor is very substantially flush with the edge of the box, the disc holder being disposed slightly above this board and parallel to it, all with a view to allowing the use of discs having a diameter greater than the width of the box. 4 talking machine according to claim and sub-claim 1, characterized in that the support of the acoustic arm is disposed .du side of the disc holder which is closest to the lower edge of the board carrying the motor.

5 talking machine according to claim and, sub-claims 1, 2 and 4, charac terized in that the support of the .acous tick arm is disposed in one of the lower rear corners: of the board carrying the motor .

6 talking machine according to claim and sub-claims 1, 2, 4 and 5, ca acterized in that the support of the acoustic arm is arranged in such a way, relative to the disc holder, that when the style is brought to rest on the beginning of the line: from the acoustic inscriptions, the acoustic arm is directed upwards, roughly parallel to the lateral sides of the box and is in a position which corresponds at least appreciably to that of its equilibrium, so that it hardly tends to rotate under the action of gravity.

7 talking machine according to claim and sub-claims 1, 2, 4 and 5, ca ractérisée in that the support of the acoustic arm is arranged such, with respect to the .disc holder, that water over the most At least a large part of a record's sound, the acoustic arm and acoustic box move from their highest position to their lowest position.

8 Speaking machine according to claim and sub-claims 1, 2, 4, 5 and 6, characterized in that the support -du acoustic arm is arranged so, relative to the disc holder, that when operation begins , the acoustic arm is moved from its position of at least approximate equilibrium and has a tendency to rotate around its support, under the action of its own weight,

in the same direction which corresponds to the displacement necessary for hearing from the outside towards the center of the disc, while in order to relieve the walls of the groove forming the line of the acoustic inscriptions of the work which consists of guiding the acoustic arm during this movement.

9 Talking machine according to claim and sub-claims 1, 2 and 4, charac terized in that the board has means for supporting the acoustic arm in the rest position, for which it is disposed approximately parallel ment to the rear side of the box, immediately adjacent -on this side, below the highest part: of the cover when the latter is applied to the box.

10 Talking machine according to claim and sub-claims 1, 2 and 3, charac terized in that the box has: with its cover closed, the shape of a parallel lelepiped, the contact surface .du cou vercle and the box proper coinciding at least approximately with the edges of the board which carries the motor and the disc holder. <B> Il </B> Speaking machine according to claim and sub-claim 1, characterized in that the acoustic arm is connected to the input of an amplifier horn arranged below the board and opening at the 'front of the box.

12 Speaking machine according to claim and sub-claims 1 and 11, characterized in that the front wall of the box is articulated to the latter by its lower edge and can be brought to occupy a position in which this wall closes the mouth of the horn amplifica tor and an opening position of this mouth, for which this wall serves .de reflecting surface for the sounds exiting -du horn and returns them upwards.