Dental model trimmer

Claim 1

A dental model trimmer machine comprising a rotatable wheel, a first abrasive disk, a temporary bonding material temporarily bonding the first disk to the wheel during model trimmer use and permitting the disk to be peeled from the wheel after model trimmer use, a loadable, removable grinding material of first abrasive quality, a grit bonding material bonding the first grinding material to the disk and permitting controlled removal of some first grinding material during model trimmer use, a second abrasive disk, a temporary bonding material temporarily bonding the second disk to the wheel concentrically with the first disk during model trimmer use and permitting the disk to be peeled from the wheel after model trimmer use, a loadable, removable grinding material of second abrasive quality different from the first grinding material, a grit bonding material permanently bonding the second grinding material to the disk and permitting controlled removal of some second grinding material during model trimmer use, a wheel housing providing a single grinding access extending past all the abrasive disks, an elongated fluid distributing pipe extending over the face of the wheel-mounted disks to distribute a grinding fluid to all the disks, coupling means permitting the pipe to be swung out of its disk overlying position to permit a disk to be peeled from the wheel and to permit a fresh disk to be installed on the wheel without interference by the pipe, motor means for rotating the wheel in the housing at a model trimming speed, shaft means extending through a housing aperture and connecting the motor means to the wheel, and shroud means surrounding the housing aperture and shaft means and extending from the housing means toward the wheel sufficiently closely to discourage the passage of liquid between the wheel and the shroud means.