Cleaning gramophone records
OwnerAlexander R. Rangabeinventor
Life of this patent
Estimating the term…
Abstract
A device for cleaning a gramophone record while the record is being played comprises an endless belt arranged to carry an electrostatic charge and mounted so as to extend generally radially of the record, with a lower run of the belt in contact with the record surface. During rotation of the record the belt gathers and removes dust and other particles from the record surface, the particles being retained on the belt by the electrostatic charge. The belt is driven by rotation of the record to transport the particles to a position remote from the record surface, the particles being removed from the belt at this position.
Claims15
In a device for cleaning a gramophone record,
- support means arranged to extend generally radially of the record,
- an endless belt arranged to carry an electrostatic charge, the belt having a lower run with a leading edge and a trailing edge, the belt being mounted on the support means such that the lower run of the belt extends generally radially of the record and contacts the record to collect dust and other particles from the record surface during rotation of the record,
- drive means mounted on the support means to drive the belt, the drive means engaging the record in order to drive the belt from rotation of the record, and
- means for removing from the belt, dust and other particles collected from the record surface.
In a device for cleaning a gramophone record on a turntable,
- an elongate frame having opposed end portions,
- a wheel mounted at one of said end portions of the frame, the wheel engaging a central portion of the record to support the said one end portion of the frame and being driven from rotation of the record,
- a support member located in a stationary position externally of the record to support the other of said end portions of the frame,
- roller means at each end portion of the frame, the roller means at the said one end portion of the frame being fast for rotation with the wheel,
- an endless belt having a leading edge, said belt being entrained around the roller means, and the belt being driven by the roller means at the said one end portion of the frame along an endless path having an upper run and a lower run, the leading edge of the belt contacting the playing surface of the record along the lower run of the path, and the belt carrying a charge such that particles gathered from the playing surface of the record by the leading edge of the belt are retained on the belt and are transported by movement of the belt from the lower run of the path to the upper run of the path, and
- means adjacent the upper run of the path to remove the said particles from the belt.
In a device for cleaning a gramophone record carried by a rotatable means to constitute therewith a rotatable assembly,
- a support member located in a position externally of the assembly,
- support means mounted by the support member to extend across and above the surface of the record,
- an endless belt arranged to carry an electrostatic charge, the belt having a lower run with a leading edge and a trailing edge, the belt being mounted on the support means such that the lower run of the belt extends generally radially of the record and contacts the surface of the record to collect dust and other particles from the record surface during rotation of the record,
- drive means mounted on the support means to drive the belt, the drive means engaging the assembly in the operative position of the support means to drive the belt from rotation of the assembly, and
- means for removing from the belt, dust and other particles collected from the record surface.
In a device for cleaning a gramophone record placed on a turntable by rotation about a vertical axis,
- a support member located in a position externally of the turntable,
- support means mounted by the support member for movement relative to the support member between an operative position in which it extends across and above the surface of the record and an inoperative position in which it is remote from the record whereby to permit removal of the record from the turntable,
- an endless belt arranged to carry an electrostatic charge, the belt having a lower run with a leading edge and a trailing edge, the belt being mounted on the support means such that in the operative position of the support means, the lower run of the belt is substantially horizontal and extends generally radially of the record, and the leading edge of the belt contacts the record surface to gather and collect dust and other particles from the record surface,
- drive means operative to drive the belt during rotation of the record, and
- means for moving from the belt dust and other particles collected from the record surface.
Dependencies are inferred from the claim text.