US2049039A - Carrying case for electric amplifiers or the like - Google Patents

Description

July 28, 1936. A Q ANSLEY 2,049,039 4 CARRYING CASE FCE ELECTRIC AMPLIFIERS 0R THE LIKE Filed Aug. 9, 1935 2 'sheets-sheet 1 au /M M ATTORNEY July 28, 1936. A, c. ANSLEY 2,049,039

CARRYING CASE FOR ELECTRIC AMPLIFIERS OR THE LIKE Filed Aug. 9, 1955 2 Sheets-Sheet 2 ATTORNEY Patented July 28, 1936- "I UNITED sTATEs CARRYING CASE FOR ELECTRIC AMPLI- FIERS R THE LIKEV Arthur c. Ansley, New York, N. Y. Application August 9, 1935,'Serial No. 35,482

y 6 Claims. This invention relates to carrying cases for an electric amplifier unit or the like and the object of the invention is to provide a carrying case adapted to this purpose in which portions of the casing which enclose the ampliier unit may also serve as a baille for the -loud speaker associated lwith the amplifier unit. A further object of the invention is to provide a. casing having the above mentioned characteristics which shallbe as compact as possible. A feature of the invention relates to the provision of a, casing having portions which act as enclosing means for the amplifier unit 'which members are hinged adjacent the portion of the casing which supports the loud speaker and which may be adjusted to act as a baiiletherefor. Another feature of the invention relates to the utilization of one ofthe vhinged members Vas -a support for theturn table of a phonograph when the amplier is of a type in` which a phonograph record is used as the soundoriginating means.-

A further feature of theinvention relates to the construction of the carrying case with a compartment in which the` loud speaker is"V located, said compartment having a partition separating the loud speaker fromthe rest of the casing, providing means, however, whereby the turn table when supported on one of the Yhinged members may be accommodated partly within the loud speaker compartment. I

A still further feature of the invention :relates to the specific means for supporting the turn table alone or the turntable and a plurality of phonograph records on the hinged member.

Further features andv advantages .will become apparent from the following detailed description and claims when taken in connection with the accompanying drawings kin :which:

Figure 1 is an endmelevation of my improved 40 carrying case in closed position.

VFigure 2 is a longitudinal section taken on the line 2 2, Figure 1 and looking in the direction of the arrows in said figure. t

Figure 3 isa horizontal section taken on the line 3-3 of Figure 1. Y 1 Y Figure 4 is a vertical section taken on the line 4-4Figure2. f l.

Figure 5 is a view of the .casing with the amplifier unit separated therefrom, both the casing and unit being shown in perspective.

Figure 6 is a modified formof construction showing a diierent method of relatively positioning the casing and amplifier unit; and' Y Figure 7 is a detail ofthe screw for holding the phonograph turn tableand records in place.

`ceiving set, or microphone.

` The casing may be made of any suitable material as for instance, it may be made of woodv covered with leather. The casing as Viewed in Figure 2, is provided With a top I and side portions 2. As viewed in the upper portion of Figure 5, one Vof the side portions 2 constitutes the top *and the other side portion 2, the bottom of the casing when it is set up as shown in said ligure. As so viewed, the sides 3 together with the partition 4 form a compartment in which a loud speaker 5 is located. The loud speaker 5 is of the ordinary cone type and is so supported in the partition as to -back and forth in addition to being able to vibrate independent of such to and fro movement.

be capable of moving bodily The casing further comprises members 6 hinged at 8 to the sides 3. The edges 9 of these members I'lt into grooves I0 formed on either side of the base I2 of the amplifier unit indicated as a Whole Ashown the sound' originating'means takes the form of a phonograph record indicated at I6 (Figure 5) which record is supported on a turn table I8 carried on a spindle indicated generally by the reference character 22 (Figures .2 and 3). The usual pick-up mechanism as indicated at 23 and. the vibrations caused by the record groove are suitably transformed into electrical Vibrations through means of theY tubes indicated generally by the reference character24 (Figure 2). The electric vibrations are transmitted to the loud speaker through a flexible cable 26'.y A plug 2l may be attached to suitable terminals in a box 3l in the partition 4 as indicated in Figure 2. A cable 33 connects the box- 3| with the loud speaker. Current is supplied to the electric amplifier unit through means of a cable 28 having a contact plug 29 adapted to be connected to any source of suitable current.

While for purposes of illustration, I have shown an electric amplifier in which the sound initiating means is furnished by a phonograph record, it is to be understood that the electric amplifying unit may have other sources of sound origination, Vsuch for instance as a vradio re- In .the form of the invention shown in Figures l'to 5, the unit :I4 is adapted to be completely separated from .the casing andthe casing set up 20 driven by amotor of these members 2 as shown in the upper portion of Figure 5. In such position the members 6 may be opened up and thereby act as a baffle for the loud speaker. It is well known that some sort of baiiing means for a loud speaker is advantageous in order that the vibrations caused by different tones may be correctly reproduced. For instance, it is found that for the higher notes the walls of the cone of thevlourd speaker vibrate, but that there is little or no tol and fro movements of the loud speaker cone as a unit. With the lower tones,

however, there is relatively less vibration of the;4 cone walls of the loud speaker and relatively more' to and fro movement of. theV cone as a unit.'

Unless, therefore, some baiiling means are provided, there is a tendency for theto. and fro vibrations to neutralize one another 'and diminish the volume of tones of lower relatively large members millingk means. .also

constitute portions Aof the ienclosinguicasing f orgthe amplifier unit. i Y A t VV'Vhen the casing hastbeen setup as shown in the upper portion of Figure 5i, itlis supported by legsf3 projecting from the lower portion 2 of .the casing. These* legs are moreclearly shown-in FiguregZ. When themcasin'g is in theposition 1 and 2 and'islready'to be It is contempl ted that the. turn table 18l be removed when the carrying casevis closed ready fortransportation. Such removal is ar practical necessity since it is contemplated ,to use'turn tables as large as 16 inches in diameter. In o rder, therefore, to accommodate aA turn table of this dimension without lremoval, from its spindle, it would be necessaryto unduly increase the4 width vof Athe carrying jcase. Therefore, in the embodiment shown, the turntable after it, isremoved -from the unit l4,is designedto besupported on one of is provided with counter-sunk plates 34 and 36. If a 12 inch turntable is used,-it,is carried by the support 34. If, a 16 inch turn table is used,.howeverit is carried by the one of the members 6. Forthis, purpose vsupport 36,. Each of these supports is centrally screw-threaded and a screwof novel construction is employed to hold the turn table and records in place.V 1

This. screw 38 .is shown in detail in Figure 7 and isv provided with :a collar 40 securedthereto which is of a length equal to. the thickness of the turn table atits central portion.. The 'screw projects, beyond the sleeve at 4I, a short distance -and itis this. portion'which enters thethreaded opening in the supporting plate 34 or 36. vThe head of the screw is knurled as indicatedat 42 and the upper screw-threaded Vportion-projects beyond' the sleeve a distance sufficient to accommodate two or three records. A winged nut. .44 is also provided, which .engages thev screw threads betweengthe head 42 and the upper end of the Vsleeve 40.

If .the turn table. only isto be attached toA the member 6 the. screw with itswinged nut bearing vagainst the upper portion of the sleeve 40 is inserted through the central opening in the turn tableand the screw given several turns through the medium of its knurled head until the lower portion of the sleeve seats against the face ofthe plate 34 or 36. In taking off the turn tablethe screw is turned through the medium of its knurled head but the winged vnut'is not loosened. If, however, Aa number of recordsareto be .placedon pitch Alll/*iths-.'11, 6, it is possiblewith the present invention to provide a very efficient baffle Y for the loud speaker, which of the clasps the screw, the screw is put through the turn table and then through the central opening in the records and the screw inserted in one of the plates as previously described for the turn table l alone. The winged nut is then tightened against 5 the turn table. It is preferable to place the turn table outside since it is more rigid than the records and tends to keep them flat.

Y Inorder that the partition 4-may Ypresent a plane surface during useof the loud speaker but l0 Valso to permit a turn table of a greater diameter than would be accommodated by the casing be- 'Vyond the partition 4, I have provided this partition :withlajhingedportion 46 (Figures 2 and 3), thehinge 48 of which is of the spring type norl5 mally:tendingY to move the hinged portion 46 in line with" the'y main portion of the partition. g'lg'hereiore., aturnjable of a size substantially equalltothe heighth of the casing from top to bottomas shown in Figure 4, may be convenient- 20 15, Carried-f. QI-Cllsecalyftum tablawhosea-diameterfis lessthan the distancehbetween thelpar- 'members 6 areimovelintol parallel relation,.the -edges Szre Set .inte #memoires/...l0 of the base I2and Ithe .casingpsecurely clamped by means t v Y A 50. A.handle .52gsecuredat 54 to the top wall of thecasing enables it to be con- 35 venientlvanied '1 In(y Figure ,-6 a :slight '-modication is shown` and here the unit vI4 fis,.not completely detachable from the casing.. but is hinged :thereto .at 56.y and additionally 4supported ,by arms S8-carried by 40 brackets .60.. Otherwise the constructionis `the .same as Lalready described,

Whatlclaim is; y i. v ff j 1. A carrying .caseg-for-nelectric amplierssaid case` having xa ,loud Speaker, fcompartmenusmembers 1.hinged;1to; opposite A'sides pof. said compartmenuwhich members. areradapted Yto be opened out. .to act as a, baffle. .for s'aid .loud speaker .and whenlswung Vto 4a..para.llel position adapted .to .receive and enclose the'amplifier.. 'i y 2. A.carrying case for. .electric amplifiers, said -case havingagloud .speaker compartment, memf bers.' hingedato opposite sides of said compartment,.which1nemliers areadaptedtotbe opened out to act a'bale Afor fsaid"A loud speaker-and '5 when .swung toA .aparallelfpos'ition adapted Vto rejceiveand enclose the amplifier, said amplifier having a base' -with'j'si'de .grooves-therein-adapted to. receive the edges` of'fsaid-members when-'swung to parallel position. f w

3. .Incombination, anel'ectric` amplifier'-V and a :carrying caselltherefor, said case' having-a loud speaker attached thereto and hinged Ymembers which enclose-'the' -amplier whenjthe dcaste and amplifier are united, said hinged membersadapt- .G5 :edf'foriadjustment- .adjacent theloud speaker and acting as a baille therefor. s S f l 4. cor'nbina'tion,d an l-.electric-framplier unit including.- a' zturniltable'iforA suppor-ting ia phonograph recordiandacarrying case forsaidunit, 70 said; casehav'ingra. loudspeaker attached there- -t'dand` hinged .memberswhich enclose utheampli- .fier whemthe.caseland.ampliiierA arej unitedf,s'iaid .hinged members.;adapted .forfadijustmentadjacent.; thelr loud; vspeaker,ancli acting .as a shame Z5 Cil therefor when the case and amplier are moved relatively to one another to non-enclosing position, one of said bale members being provided with means for supporting the phonograph record turn table after the same has been detached from the amplier unit.

5. In combination, an electric amplier unit including a turn table for supporting a phonograph record and a carrying case for said unit, said oase having a partition forming with the Walls of the case a compartment for housing a loud speaker, a loud speaker carried by the partition, members arranged adjacent the loud speaker and acting as a baiile therefor, one of said baiile members being provided with means to support the phonograph turn table, said partition having a yielding portion adjacent the turn table supporting baille member permitting the turn table to enter the loud speaker compartment when supported on said member.

6. A support for a phonograph turn table and records when in non-playing position, said support having a screw-threaded opening, a screw fitting said opening, a sleeve rigid with the screw and terminating short of the end thereof a distance less than the depth of the threaded opening n said support,'said sleeve being of a length equal to the thickness of the turn table at its central portion, and a winged nut carried by the screw between the head thereof and the sleeve.

ARTHUR C. ANSLEY.

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