US1496911A - Phonograph - Google Patents

Description

june i@ l 924.

C. 55. SPITZER ET AL.

PHONOGRAFH Filed May v', 1921 3 Sheets-Sheet l www i june l0 v l 924.

c. s. sPn'zER ET Az.,

PHONOGRAPH Filed may v 332A A 3v Sheets-Sheet 5 sure insubstantially all directions,

)ect being attained by providing an ainpllv the invention is to- '.bein'g s own in'its raised position.

tion,

Patented June 10, 1924.

UNITED s'rarss 1,496,911 4revisar worries.,

CHARLES s'.' sPI'rzEn. .um roma GLOUB, or omesso, ILLINioIs.

lrrionocnarn.

Application filed May 7,

To allwlwmzt may concernl Be it known that we, CHARLES S. Srrrznn and J oHN Gnomi,A both citizens of the United States, and residents of Chicago, in 'the county of Cook and State of Illinois, havef invented certain new and useful Im rove-' ments Phono aph's, .of which the ollow. in is a full, c ear, and exact description. e, `invention relates to phonographs.' One object of the invention is to provide improved phonograph in which the amplier is enclosed and. constructed so that the sound will'be deected through itshenclgvt iso fier.' Another object o provide an improved amplifier and an 1m-` proved tone-arm. -Qther objects of thein# .vention will appear-from the descriptiom* The invention consists in the several novelfeatures hereinafter 'set forth and more particularly 'defined by' a claim at the conclusion hereof.y i In the drawings: Fig. 1 is a front eleva- -tion ofa phonograph; Fig. 2is a side ele-v vati'on, .the .cover containing the am liiie. 1gis a -vertical longitudinal sectio'n. Fig. 4 is a sideelevation of thev amplifier, the cabinet and cover being shown in section. Fig. 5 is a horizontal section taken on line 5--5 of Fig. 2. Fig. 6 isa detail section of the tone-arm.

The invention is exemplified in a 'cabinet 6 which may be of any suitable constructhe one illustrated corresponding to the structure included in Letters Patent No. 1,402,383 granted yto us January 3, 1922. This cabinet isprovided with a top 7 which comprises a removable central section 8"'. on the undersideof which a motor 9 of any suitable vconst'ruction is mounted.` An enlclosing case 10 for said motor is also se: cured to the underside of top-section '8.-' A record-holder or table 11 connectedto be' driven by the motor is rotatable above the cabinet top 7, in manner well understood in the art. A reproducer 12 is suitably connected to the outer end of a tone-arm 13 which is made of natural cows. horn. This lmaterial has been found to form an eliicient conductor for sound which will avoid me:- tallic strains in the reproduction of a record.- The horn is secured to a ring 13 on the case of the reproducer by aA'screw-tliread 13* and is connected by a hinge 14 and telescopically,

192i. semi m4615755.

asiat 15, to an elbow 416A which rotatably to rotate with the tone-arm and so holds the elbowl on the post s it will it 'may be removed from the post when 'A desired.

cover'is movably mounted on top ofthe cabinet and comprises a base-frame ,20, sides 21, all ofwhich have o enngs therein for -the escape of sound, an a top comprising a slopingA portion 22 and a flat portion 23. This to I serves as a hood or container vfor an amp er 24 for the sound from the tonearm and is 'vertically movable so as'Y to provide access tothe top of the cabinet, so that records ma be placed on and removed from therecordolder 11. The cover is xed to a pair of vertical rods25 which-are'slidahly m'ounted `in `vertical sockets 26 formed in the corners of the cabinet 6. Springs 27 in`v the' lower ends of? the sockets act onsaid rods to press the cover normally `upward and away romthe cabinettop. -A stud 28 is 'adapted to extend through ahole 30 in the top 7of the cabinet and is rovided with a notch 29 which is v adapte to receives. latch-lever 531,' which is pivoted to the cabinet, at 32, and normally pressed into operative o'sition by afspring 33. The lower end o stud 28 is pointed -so as to pass the latch-lever and so that the lever will auto,

matically snap into n0tcl129 when. thecover The improved amplifier 24 is preferablyv `formed of a natural sea-shell 5nd is secured to the section 23 of the coi/er/by screws 34.' This amplifier is provided with an inlet opening, at 35, and a helicoidal conduit 36 of progressively increasing size and which terminates into a large open-ended outlet portion 37 which faces downwardly.

aredhead and deflector 38 is formed of vellum stretched over ribs lon and spaced from a correspondingly flared or pyramidul bottom 38 for the cover which is secured on Vthe base-.frame 20. The head 38 Yis spaced from the outlet of the amplifier and acts as a drum-head to amplifythe sound as well as ,a deil'ector for the sound issuing from the amplifier 24. A' characteristic of this construction is that the sound willI he deflected lois-l im, downwardly discharged in substantially all .90- is lowered. When-the latch-1ever .1s released,v"

directions from the outlet of the amplifier and through all of the sides`21 of the cover.

In practice, it has been found that the heli-v coidal conduit in a sea-shell will elliciemly conduct and amplify the sound. A metal tube 39 is lixedly supported in the cover and has its upper end suitably secured to ,the inlet of the amplifier. The sound connection between the tube 39 and elbow 16 comprises a pair of telescopic sections 4U and 41. Section 40 is adapted to slide into 7 the elbowie, being provided with a aange,

. 42 which i's-adapted to engage a ring V43 on in Figs. 2 and 3,'the record-holder 11 will -be accessible so that a.. recordv disk may be placed thereon or removed therefrom 'when the tone-arm 13 is lifted. When the reproducer and reco'rd'have .been ut into' operative relation', the cover. may, e lowered into t.

'we claim as new and desire to, secure by Letclosedposition, as shown in Figs. 1 and 4.

In lowering the cover, lthe tubular sections between elbow 16 and tubef39 will telescope into one another as shownin Fig.-.4. During the operation of the record-holder, the tone-arm will rotate with elbow 16.on post 17 andthe sound will ass through the tonearm 13, elbow 16, tubu ar sections 40, 41 and tube 39 to the inlet 35 of the amplifier. The sound connection between the tube 39 and elbow 16 remains complete when the cover is raised, so that the sound wlll be conducted to the amplifier when the cover is raised, as well as when it is lowered. The sound passin into the inlet 35 continues through the lhe icoidal conduit 36 to the enlarged outlet 37, from which it passes downwardly and laterally in substantially all directions, beingdeflected by the defiector 38 throu h the openings in the cover-sides` 21 whie are usually lined with a textile fabric 48, as well understood in the art. I

The invention exemplifies a phonograph in which the amplifier is enclosed in, and movable with,'the cover of the cabinet; in which the sound from the amplifier is defiected laterally in substantially' all directions after leaving the amplifier; in which the cover, containing the amplifier, is iverti# cally slidable'to provide access to thc'record holder with Va telescopic connection with tlnl tone-arm, so that'the 'instrument will be operative when the cover is raised, as melius when it is lowered; in which the amplifier lis provided witha helicoidal conduit and formed of sea-shell.

The invention. is not to be understood as restricted to the details set fo1th,'since these may Abe modified withinV the scope of the 'appended claim, Without departing from the spirit andl scope of the invention.`

Having thus described the invention, what.

ters Patent, is:

In a. phonograph cabinet, a tone ami, a vertically slidable hollow cover over the cabinet, an amplifier disposed in the cover, a

sound-connection Abetween the amplifier :md the tone arm, and means for automatically lifting the cover comprising rods for guiding said cover-vertically. and springs at the ends of said rods for lifting said cover.

CHARLES SPITZRR JOHN GLOUB.

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