Apparatus for the cleaning of phonograph records
OwnerRudolf Laenginventor
Life of this patent
Estimating the term…
Abstract
A dusting or cleaning apparatus is mounted on the cover for the apparatus and serves to clean phonograph records on the turntable by means of a brush which is mounted on guide arms and engages the record during rotation of the turntable. The apparatus, while in engagement with the record, is guided from the outer portion of the record, radially inwardly as the phonograph record turns. This is accomplished by means of the brush which is mounted for slideable movements on the guide arms and is moved radially on the phonograph record while it is turned on the turntable.
Claims8
Apparatus for automatically selectively cleaning and neutralizing electrostatic charges on phonograph records and adapted to be mounted on a carrier, comprising the combination of:
- a turntable adapted to receive a phonograph record thereon for operatively turning movement, longitudinal guide means extending above and radially of the phonograph record and proportioned to be of a length at least equal to the radius of the record being played, brush means carried by said guide means and lightly engageable with the surface of the record with a normal force adapted to effect dust and dirt removal without substantial impeding effort to free rotation of the phonograph record, depending support arms slopingly extending from said guide means for carrying said brush means, connecting means forming a relatively freely slideable connection between said support arms and said guide means to permit radially traversing movement of said brush means across the surface of the record responsively of the rotation of the record, said brush means being radially movable by the record grooves whereby said brush means traverses the record in a radial sense to effect dust removal and electrostatic charge neutralization of the record, said carrier comprising a dust cover pivotably attached at one edge to the turntable chasses and swingable to an open position for changing records, said radially disposed guide means being attached to and depending from the inner surface of said dust cover, the outer end of said guide means being adjacent said one edge so that upon swinging said cover to an open position, said brush means will slide downwardly on said guide means to automatically reposition the brush means toward the outer end of said guide means, and movable record wiper means pivotally carried by said carrier and extending radially inward to said carrier, said wiper means being in engagement with the pintil of the turntable to ground charges picked up from the record during play thereof.
Apparatus for automatically selectively cleaning and neutralizing electrostatic charges on phonograph records and adapted to be mounted on a carrier, comprising the combination of:
- a turntable adapted to receive a phonograph record thereon for operatively turning movement, longitudinal guide means extending above and radially of the phonograph record and proportioned to be of a length at least equal to the radius of the record being played, brush means carried by said guide means and lightly engageable with the surface of the record with a normal force adapted to effect dust and dirt removal without substantial impeding effort to free rotation of the phonograph record, depending support arms slopingly extending from said guide means for carrying said brush means, connecting means forming a relatively freely slideable connection between said support arms and said guide means to permit radially traversing movement of said brush means across the surface of the record responsively to the rotation of the record, said brush means being radially movable by the record grooves whereby said brush means traverses the record in a radial sense to effect dust removal and electrostatic charge neutralization of the record, grounding means for grounding said brush means to remove the electrostatic charge from the record during the rotation thereof, said grounding means including movable record wiper means pivotally carried by said carrier and extending radially inward of said carrier, said wiper means being in engagement with the pintil of the turntable to ground charges picked up from the record during play thereof.
Dependencies are inferred from the claim text.