Apparatus for removing warps or surface irregularities from polyvinyl phonograph records
OwnerNorman J. Hendersoninventor
Life of this patent
Estimating the term…
Abstract
Method and apparatus for removing warps or surface irregularities from polyvinyl phonograph records by exerting forces vertically and/or laterially on a record. The apparatus includes a plurality of plate-like members which are used to engage with the lead-in lips and/or label regions on one or more records and to apply appropriate forces. The effectiveness of the method and apparatus is enhanced by the application of moderate heat from an external source.
Claims9
Apparatus for removing warps or other surface irregularities from at least one polyvinyl phonograph record comprising:
- first and second plate-like members, each having a center aperture and two elevated circular concentric surfaces on one face thereof, one of said circular surfaces of each member being adapted to engage with the lead-in lip of a record disposed between said members and in a coaxial relationship with said members, the other of said circular surfaces of each member being adapted to engage with the label portion of said record, said circular surfaces preventing engagement of the remaining portions of said members with the playing surface of said record;
- and
- clamping means for applying variable axial forces to said record through said members to clamp said record between said members.
Apparatus for removing warps or other surface irregularities from at least one polyvinyl phonograph record comprising:
- first and second plate-like members, each having two elevated circular concentric surfaces on one face thereof, one of said circular surfaces of each member being adapted to engage with the lead-in lip of a record disposed between said members and in a coaxial relationship with said members, the other of said circular surfaces of each member being adapted to engage with the label portion of said record, said circular surfaces preventing engagement of the remaining portions of said members with the playing surface of said record;
- first clamping means for applying an axial clamping force through said label portion of said record;
- and
- second clamping means for applying an axial clamping force through said lead-in lip of said record,
- said plate-like members being constructed and arranged to apply additional forces to said record in a radial direction upon application of said axial clamping forces.
Dependencies are inferred from the claim text.