Sound record

Claim 2

A sound record generally of the disc-type having a generally flat playing area on which a sound track is disposed with the playing area being revolvable about an axis generally perpendicular thereto, including a plurality of concentric record parts annularly adjustable one with respect to the other about said axis, one of the record parts having at least one sound track portion in position for registry with any one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said relative rotational adjustment of the record parts to change the registry of the respective sound track portions thereon, the outer circular periphery of an inner record part being in sufficiently close proximity to the inner circular periphery of an immediately adjacent outer record part at a joint to permit a stylus or other appropriate sound pickup unit to pass from one record part to another, and means to releasably hold said record parts together for conjoint rotation about said axis.

Claim 3

The sound record of claim 1 including means to release said lock means automatically in response of relative axial movement of the record parts to permit said relative adjustment of the record parts.

Claim 4

A sound record generally of the disc-type having a generally flat playing area on which a sound track is disposed with the playing area being revolvable about an axis generally perpendicular thereto, including a plurality of concentric record parts annularly adjustable one with respect to the other about said axis, one of the record parts having at least one sound track portion in position for registry with any one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said relative rotational adjustment of the record parts to change the registry of the respective sound track portions thereon, the outer circular periphery of an inner record part being in sufficiently close proximity to the inner circular periphery of an immediately adjacent outer record part at a joint to permit a stylus or other appropriate sound pickup unit to pass from one record part to another, one of said record parts having a circular peripheral portion at said joint overlapping the other record part to facilitate the sound pickup unit passing from said one record part to the other adjoining record part, and means to releasably hold said record parts together for conjoint rotation about said axis.

Claim 5

A sound record generally of the disc-type having a generally flat playing area on which a sound track is disposed with the playing area being revolvable about an axis generally perpendicular thereto, including a plurality of concentric record parts annularly adjustable one with respect to the other about said axis, one of the record parts having at least one sound track portion in position for registry with any one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said relative rotational adjustment of the record parts to change the registry of the respective sound track portions thereon, the outer circular periphery of an inner record part being in sufficiently close proximity to the inner circular periphery of an immediately adjacent outer record part at a joint to permit a stylus or other appropriate sound pickup unit to pass from one record part to another, one of said record parts having a circular peripheral portion at said joint overlapping the other record part to facilitate the sound pickup unit passing from said one record part to the other adjoining record part, and means to releasably hold said record parts together for conjoint rotation about said axis.

Claim 6

The sound record of claim 3 wherein said circular peripheral portion of said one record part is sloped toward the other record to facilitate movement of the stylus or other appropriate pickup unit from said one record part to the other.

Claim 7

The sound record of claim 3 wherein said circular peripheral portion of said one record part is devoid of recorded messages thereon.

Claim 8

The sound record of claim 5 wherein said circular peripheral portion of said one record part has unrecorded groove portions forming a continuation of the sound track to provide a lead into the sound track on the other record part.

Claim 9

A sound reCord generally of the disc-type having a generally flat playing area on which a sound track is disposed with the playing area being revolvable about an axis generally perpendicular thereto, including a plurality of concentric record parts annularly adjustable one with respect to the other about said axis, one of the record parts having at least one sound track portion in position for registry with any one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said relative rotational adjustment of the record parts to change the registry of the respective sound track portions thereon, the outer circular periphery of an inner record part being in sufficiently close proximity to the inner circular periphery of an immediately adjacent outer record part at a joint to permit a stylus or other appropriate sound pickup unit to pass from one record part to another, one of said record parts having a circular peripheral portion sloped toward the other record part to facilitate movement of the stylus or other appropriate pickup unit from said one record part to the other adjoining record part, and means to releasably hold said record parts together for conjoint rotation about said axis.

Claim 10

A sound reCord generally of the disc-type having a generally flat playing area on which a sound track is disposed with the playing area being revolvable about an axis generally perpendicular thereto, including a plurality of concentric record parts annularly adjustable one with respect to the other about said axis, one of the record parts having at least one sound track portion in position for registry with any one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said relative rotational adjustment of the record parts to change the registry of the respective sound track portions thereon, the outer circular periphery of an inner record part being in sufficiently close proximity to the inner circular periphery of an immediately adjacent outer record part at a joint to permit a stylus or other appropriate sound pickup unit to pass from one record part to another, one of said record parts having a circular peripheral portion sloped toward the other record part to facilitate movement of the stylus or other appropriate pickup unit from said one record part to the other adjoining record part, and means to releasably hold said record parts together for conjoint rotation about said axis.

Claim 11

The sound record of claim 7 wherein said circular peripheral portion of said one record part is devoid of recorded messages thereon.

Claim 12

A sound record including a plurality of record parts adjustable one with respect to the other, one of the record parts having at least one sound track portion from which a stylus or other appropriate sound pickup unit may pass to one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said adjustment of the record parts to change the relative positions of the respective sound track portions thereon, the adjacent peripheries of the record parts being in sufficiently close proximity to each other at a joint to permit the stylus or other appropriate sound pickup unit to pass from one record part to another, and means to releasably hold said record parts together for sound reproduction purposes, said record parts are generally concentric and revolvable about a common axis for sound reproduction purposes, the record parts are adjustable one with respect to the other about said axis, and said last named means releasably holds the record parts together for conjoint rotation about said axis.

Claim 13

A sound record including a plurality of record parts adjustable one with respect to the other, one of the record parts having at least one sound track portion from which a stylus or other appropriate sound pickup unit may pass to one of a plurality of sound track portions on another record part to provide a sound track extending over both record parts, thereby providing for changing of the sound track in response to said adjustment of the record parts to change the relative positions of the respective sound track portions thereon, the adjacent peripheries of the record parts being in sufficiently close proximity to each other at a joint to permit the stylus or other appropriate sound pickup unit to pass from one record part to another, and means to releasably hold said record parts together for sound reproduction purposes, said record parts are generally concentric and revolvable about a common axis for sound reproduction purposes, the record parts are adjustable one with respect to the other about said axis, and said last named means releasably holds the record parts together for conjoint rotation about said axis.