US 4,070,028 AGranted

Cleansing of contaminants from gramophone records

AssigneeMetrosound Audio Products Ltd.

InventorPercy Wilson

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Abstract

A cleaning device, for the removal of contaminants from the grooves of gramophone records, is of the kind having a rod-like scouring element adapted to pass down into the groove at least partially towards the base of the groove, a reservoir for supplying cleansing liquid to the scouring element, and means for supporting the scouring element in relation to a rotating record, the scouring element being resiliently bendable and/or the supporting means providing resilient support of the scouring element. A supporting means is so arranged that the longitudinal axis of the scouring element may lie in a plane which is substantially normal to the groove radius at the point of contact, and with the longitudinal axis of the scouring element forming less than a right angle, preferably within the range 30.degree. to 45.degree. and most preferably approximately 35.degree., with the plane of the record downstream of the point of contact, i.e. such that the scouring element is presented in opposition to the direction of relative movement of the record.

A cleaning device, for use on a record player including a deck and a turntable, for the removal of contaminants from the grooves of a micro-groove gramophone record carried on said turntable, comprising:

i. a mounting for disposition on said deck, said mounting including pivot means
ii. an arm supported adjacent one of its ends on said pivot means and pivotable thereon for lateral movement of its other end with respect to the deck and for lifting and lowering movement of its other end with respect to the deck,
iii. supporting means on the other end of said arm
iv. a rod-like bunch of bristles constituting a scouring element and having a longitudinal axis and a first end and a second end, said bunch of bristles being resiliently bendable transversely to said axis, said bunch of bristles being secured by its first end to said supported means, said bunch of bristles having its second end extending away from the supporting means with its axis having a first component of direction away from said arm and a second component of direction towards said mounting such that said bunch of bristles lies, when the device is in use on the gramophone record, at an angle within the range 20.degree. through 60.degree. with respect to the plane of the gramophone record and extends in the direction against the rotation of the gramophone record, said second end of said bunch of bristles being adapted to pass down into the groove of the gramophone record at least partially towards the base of said groove,
v. a receptacle for supplying cleansing liquid to said bunch of bristles,
vi. means defining a flow path for said liquid from said receptacle to said bunch of bristles, and
vii. said mounting having a lower end for placing on said deck, and an upper end at which said pivot means is disposed, said arm being positioned when the bunch of bristles is in use on a gramophone record, at an inclination upwardly from said one end thereof towards said other end thereof, whereby an increase of drag resistance occurring between the bunch of bristles and the record surface results in an increase of force urging the bunch of bristles down into the groove of the record.

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Abstract

Claims5