Phonograph tone arm

Claim 2

In a phonograph tone arm assembly, the combination of a tone arm and mounting means therefor including a cylindrical roller to which the tone arm is fixed, a supporting surface, and compliant strip means wrapped about said cylindrical roller and fastened thereto, said compliant strip means having ends extending outwardly fore and aft from said roller and fastened to the supporting surface, said compliant strip means accommodating rolling movement of the roller and pivoting of the tone arm therewith.

Claim 3

The combination of claim 1 wherein the said fore and aft extending ends of the compliant strip effect equal and opposing forces of resistance to said roll of the roller.

Claim 4

The combination of claim 1 wherein the length of the tone arm, the radius of the roller and the angle through which the tone arm swings with roll of the roller are so related that a stylus supported on the free end of the tone arm moves substantially vertically through said angle.

Claim 5

In a phonograph tone arm assembly, the combination of a first member which is free to turn on a vertical axis, said first member having a flat upper surface, a second cylindrical member mounted on said flat surface to roll freely relative thereto without sliding, and a tone arm carried by said second member, the tone arm pivoting vertically with roll of said second member and horizontally with turning of the first member.

Claim 6

In a phonograph tone arm assembly, the combination of a first member which is free to turn on a vertical axis, said first member having a flat upper surface, a second cylindrical member mounted on said flat surface to roll freely relative thereto without sliding, and a tone arm carried by said second member, the tone arm pivoting vertically with roll of said second member and horizontally with turning of the first member.

Claim 7

A mount providing a horizontal pivot for a phonograph tone arm comprising a base plate, a roller member, means fastening the roller to said base plate to roll relative to said base, and means mounting the tone arm on said roller member, said roller fastening means guiding the rolling motion of said roller member in a straight path to cause the tone arm to move along a vertical plane.

Claim 8

A mount providing a horizontal pivot for a phonograph tone arm comprising a base plate, a roller member, means fastening the roller to said base plate to roll relative to said base, and means mounting the tone arm on said roller member, said roller fastening means guiding the rolling motion of said roller member in a straight path to cause the tone arm to move along a vertical plane.

Claim 9

A mount as defined in claim 5, wherein said fastening means guiding the rolling motion of said roller member comprises at least two compliant strips having their opposite ends fastened between said roller member and said base plate and extending from the peripheral surface thereof in opposite tangential directions.

Claim 10

A mount as defined in claim 6 wherein the roller has a cylindrical surface and the mount includes means which hold said compliant strips under constant tension to cause said strips to be disposed in tight engagement with said cylindrical surface of said roller member.

Claim 11

In a phonograph tone arm assembly the combination of a base plate, a cylindrical pin having a bore formed crosswise along its length, a tone arm mounted in said bore with its stylus supporting end extending forwardly thereof, at least two compliant strips disposed tightly around at least a portion of said cylindrical pin, said strips having one end fastened to said cylindrical pin and the other ends of said strips extending in opposite tangential directions from said pin and fastened to said base plate such that the pin rolls relative to the base plate with pivoting of the tone arm.

Claim 12

In a phonograph tone arm assembly the combination of a base plate, a cylindrical pin having a bore formed crosswise along its length, a tone arm mounted in said bore with its stylus supporting end extending forwardly thereof, at least two compliant strips disposed tightly around at least a portion of said cylindrical pin, said strips having one end fastened to said cylindrical pin and the other ends of said strips extending in opposite tangential directions from said pin and fastened to said base plate such that the pin rolls relative to the base plate with pivoting of the tone arm.

Claim 13

The combination defined in claim 8 further comprising means which hold said compliant strips under constant tension.

Claim 14

The combination defined in claim 9 wherein said tension means comprises resilient means interconnected between said other ends of said compliant strips and said base plate.

Claim 15

The combination defined in claim 9, wherein said tension means comprises an adjustable means interconnecting said other ends of the compliant strips and said base plate for selectively varying its length to place said compliant strips under tension.

Claim 16

A phonograph tone arm mount providing a horizontal pivot for a phonograph Tone arm comprising a base plate, an elongated roller member having a convex curved surface, means mounting the tone arm on said roller member above said curved surface with a free end forwardly thereof, and compliant strip means disposed tightly about said convex curved surface of the roller member in a transverse direction to its length and having at least two ends extending in tangential opposite directions from said convex curved surface and fastened to said base plate, said compliant strip means being fastened to the roller member whereby said roller member rolls in a horizontal path relative to said base plate and the free end of the tone arm moves vertically therewith.

Claim 17

A phonograph tone arm mount providing a horizontal pivot for a phonograph Tone arm comprising a base plate, an elongated roller member having a convex curved surface, means mounting the tone arm on said roller member above said curved surface with a free end forwardly thereof, and compliant strip means disposed tightly about said convex curved surface of the roller member in a transverse direction to its length and having at least two ends extending in tangential opposite directions from said convex curved surface and fastened to said base plate, said compliant strip means being fastened to the roller member whereby said roller member rolls in a horizontal path relative to said base plate and the free end of the tone arm moves vertically therewith.

Claim 18

A phonograph tone arm pivotal mount as defined in claim 12, wherein said compliant strip means comprises three compliant straps having one end fastened to said roller member and the other end fastened to said base plate such that each of said straps are in tight engagement with at least a portion of said convex curved surface and the middle of said three straps extends in an opposite tangential direction from said curved surface relative to the other two of said straps.

Claim 19

A phonograph tone arm pivotal mount as defined in claim 12, wherein said compliant strip means comprises four compliant straps having one end fastened to said roller member and the other end fastened to said base plate such that each of said straps are in tight engagement with at least a portion of said convex curved surface and two of said straps extend in opposite tangential directions from said curved surface relative to the other two of said four straps.

Claim 20

A tone arm pivotal mount as defined in claim 12, wherein said compliant strip means comprises two compliant straps positioned at opposite ends along said roller member and wrapped in a tight engagement completely about said elongated roller member, the opposite ends of each of said two compliant straps extending in opposite tangential directions from said convex curved surface and fastened to said base plate.

Claim 21

A tone arm pivotal mount as defined in claim 12, wherein said compliant strip means comprises a single strap wrapped in tight engagement completely around said elongated roller member transversely to its length at an approximate mid-point with its opposite ends extending in opposite tangential directions from said convex curved surface and fastened to said base plate.