US1455913A - Phonograph - Google Patents

Description

Patented Maf,7 Z22, i923.

UNTED Application filed. Septerf To all w/iom 'it 'may concern Be it known that l, 'CARL d'. l? erin a ci tizen of the Republic of Germani ing at and whose post-oliee address East lllth Street, city ot l'iei oli Bronx, State oit New Y l have l certain new and useful lrnproveinr l?lioii igi'aplis; and I do hereby declare the following' to be a iull7 clear, and enact seription oil the inventionT such as will ouable others skilled in the art to which it appertains to malte and. use the The invention relates to cortan new eno. useful improvements in phonographs sind niorel particularly in the inode of attach and supporting` the horn or aro l: r wi the cabinet, so that the sole Contact lieti the horn and the other elenients oi the phonograph is by ineens or a relativeli connection between the upper end oli the -horn and the under side oit` the support or other fined part ot the preferably in the torni oit a slip joint r admits olf the horn being` reffididqT appliei and renioved or substituted by a horn et diiferent character' the particular advantalje of such an arrangement being` the ,obst ntial elimination oi' all noises or soundsIn ineidental to the operation of the machine, oxcei'it the sounds specitic/all)7 desigrnei'l be reproduced` which latter are delivered aud amplified b v the horn with the 'ullnei-is and integrity of tone and duality w" h have not been, capable ot reak/,ation u li fna- -hiues ot the standard typeq in which the horns are usuallyT rigidly attached to the easing or cabinet various points and which, therefore, transmit all ot the sounds and noises produced by the operation oi the motor and other movable parts oil" the inechanisrn, to the serious impairment of the reproduction of the phonograph record.

One exemplication of the invention is illustrated in the accompanying* drawings in which Fig. l is a side elevation, partly in section, of a cabinet phonograph having the iinprovements aforesaid associated therewith;

Fig. 2 is a perspective view of the horn and one element of the slip `ioint for connecting or suspending the saine within the cabinet;

Fig. 3 is a fragmentary rear elevation showing the joint between the horn and its support.

orties.

@E GHETTLLF T0 EDVIN IVI.

"i7 YCEK.

del, 3.221?. Serial No. 43.0;324.

Referring to the drawingsD l indicates the cabinet or casing or the phonograph, which may be o'l anyv ot the usual or standard styles sizes or shapes, provided with a l below which is located the inotor board 2? which is fastened to the in- "ed top er walls oi the cabinet in the usual inauner, ann supports the standard type ot motor irechouiisni7 record table and tone arni. The tone arm which is more or less conventionlv illustrated, is mounted on the upper face the motor board 2 above the opening' 2 the cabinet is provided with doors at both 'liront an d back.

it has been customary heretofore to secure i Y o the under side of the tone arin support. or directlj,7 Y Y .e tone ar a b v a rig'i d connection, with the result that anv sounds or noisesy developed bv the operation ott the machine were transmitted b v the tone arni` the support there.or and the other elements ot the or housing to the horn or ampli- Y' i-:ono wai-ch the;Y were delivered with sounds reproduced 'from the phono- Y Y `Yc record. the material and objectionable impairi t thereof. lt frequently occiuref` therefore i at a substantiallv per- Ytect record would be evi denced b v harsh and unnatural tones and associated with strange and unusual sounds which were characteris .e el the particular machine. 'llheso objectionable characicristies were acermtuated even a greater degree in phonograph inachinos in which the horn or amplifier is attached to the boojv portion oi the casino.; in addition to vthe attachment thereoi to the tone arin supporting board or to the end ot the tone arrn. The present invention .is designed to overcome all of these diiiieulties and to provide the ordinariT standard type of phonograph with a horn or amplifier which will deliver onli,T the intrinsic values of the phonograph record, whether the saine represent spoken words. vocal or instrumental tones or ani7 other character of sound, and which will not either receive or transmit the objectionable sounds or noises developed the machine. To this end the horn Jrens 4t, et fastened to the under side of the motor board 2 adjacent the opening 2 therein, below' the tone arm rl`he horn proper hangs tree within the cabinet and is not in contact with any other part of the apparatus` so that it will be free vtroni sounds or noises developed in or transmitted by the cabinet or housing, or any part thereof. The connection therefore between the horn or amplifier and the other parts of the apparatus is solely through the relatively loose slidable joint or attachment between the horn and the interior portion ot the cabinet adjacent the end of the tone arm. This loose joint in itself, while properly supporting' or suspendinglr the horn, nevertheles,` is effective to suppress and prevent transmission of any of the so-called machine noises, develops-fd outside ot the record, to the horn or ampliier. On the other hand, the character ot the joint does not in any way impair the tree passage of the sound waves developed at the reproducer and conveyed through the tone arm, thence into the neck of the horn, but on the contrary the tones or sounds reproduced Yfrom the record are delivered by the horn or amplifier with all of their original purity, fullness an d intefrritv. The result is characte tic not onlv et spoken or singing voice records, but also of records of various musical instruments, and the improvement in the quality, tonic effects and general excellence of reproduction, as compared with the former types ot horns or amplifiers, is most strikingr and marke/l.

The horn or amplitier may lie made oi any suitable and desirable material and in any preferred form, and the removable character ot the horn admits horns o'l various types and materials being substituted to suit the particular record beingr reproduced. Likewise the outlet ot the horn may be directe/l toward any particular portion ot the cabinet or casing, so that the invention is applicable to various standard types of casing and the present horn or amplifier may be substituted for the older forms of these devices, in many instances, by merely supplying the under side of the motor board, tone arm support or other proximate part of the cabinet with the complementary portion of the slidable joint by means ot' which the horn is suspended, as indicated.

It will be obvious, of course, that the various other types of relativelyv loose joints between the horn ot' the motor board may be substituted, to the same desirable effect and it is to be understood that the particular Vlorm of dovetailed joint as illustrated is merely exemplary.

As suggested, the horn or amplifier which detachable or replz'iceable may be given any desired form, shape or configuration. ihe relatively simple form illustrated in the drawings, .in which the horn extends downwardly in a vertical direction from the motor board, takes up a relatively small amount of space in thel casing and leaves a much larger element of the casing space for storage ot records as indicated.

It is frequently desirable that the amplifier be associated with a sounding board. and such an arrangement is shown in the drawings, the sounding,r board usually being mounted on the rear wall of the partition 8 that forms the back ot the record storage space, said sounding` board being attached to the partition 8 by means of spacing washers l0 and screws 11.

Vhat I claim is:

l. A phonograph havingY a horn or ampli- #Vier depending below the tone arm, and means for supporting the horn solely from the neck thereof" comprising a horizontally slidable separable joint between the neck of' the horn and the motor board.

2. A phonograph having a horn or ampli- .fier depending below the tone arm, and means for supportingT the horn solely from the neck thereof comprisingr a horizontally slidable separable joint between the neck of the horn and the under face of the motor board.

In testimony whereof I aix my signature.

CARL J. HOFMANN.

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