Honing device and method of use

A device, for honing a shaver rotary cutter head having axially-facing cutting edges, comprising first and second members journalled one with respect to the other for relative rotation about an axis, one of said members having at a first exposed axial end an axial recess coaxial with said axis and bounded by a surface having angularly spaced projections for non-rotatable engagement by a first digit of the user holding the device between two opposed digits, the other of said members having at a second exposed axial end remote from said first end means such as a formation adapted to journal said other member by engagement with the other of said digits for rotation substantially about said axis, means to act between one of said members and a rotary cutter head disposed when the device is in use coaxially intermediate said respective exposed axial ends for preventing relative rotation of said cutter head with respect to said one member, and an abrasive face on the other of said members for contacting the axially-facing cutting edges of said cutter head, said other member having an external circumferential surface adapted for frictional engagement with a running surface.

A device, for honing a shaver rotary cutter head having axially-facing cutting edges, comprising first and second members journalled one with respect to the other for relative rotation about an axis, one of said members having at a first exposed axial end abutment means which are spaced radially from said axis for providing non-rotational engagement with a first of two digits of a user holding the device between those two digits, the other of said members having at a second exposed axial end remote from said first end a coaxial means for engagement by the other of said digits and providing a journal for relative rotation of said other member about said axis relative to said other digit, an element of elastomeric material disposed when the device is in use coaxially intermediate said respective exposed axial ends and adapted to bear frictionally on said cutter head for preventing relative rotation of said cutter head with respect to said one member, and an abrasive face on the other of said members for contacting the axially-facing cutting edges of said cutter head, said other member having an external circumferential friction-enhancing surface for engagement with a running surface.

A device for honing a shaver rotary cutter head having axially-facing cutting edges, comprising first and second members one of which is tubular and the other of which is rotatable within said one member about an axis, one of said members having at a first exposed axial end abutment means which are spaced radially from said axis for providing non-rotatable engagement with a first portion of a holder, the other of said members having at a second exposed axial end remote from said first end a coaxial means to form with a second portion of said holder a journal for relative rotation of said other member about said axis, rotation-preventing means to act between one of said members and a rotary cutter head disposed when the device is in use coaxially intermediate said respective exposed axial ends for preventing relative rotation of said cutter head with respect to said one member, and an abrasive face on the other of said members for contacting the axially-facing cutting edges of said cutter head, said other member having an external circumferential friction-enhancing surface for engagement with a running surface.

A device, for honing a shaver rotary cutter head having axially-facing cutting edges, comprising first and second members one of which is tubular and the other of which is rotatable within said one member about an axis, said tubular member having one end open and the other end at least partially closed by an exposed axial end wall provided with an axial recess bounded by a smooth surface to receive a first digit of a user holding the device between two opposed digits and forming a journal thereon for said tubular member, the other of said members having at a second exposed axial end abutment means to engage the other digit of the user, rotation-preventing means to act between one of said members and a rotary cutter head disposed when the device is in use coaxially intermediate said respective exposed axial ends for preventing relative rotation of said cutter head with respect to said one member, and an abrasive face on the other of said members for contacting the axially-facing cutting edges of said cutter head, said tubular member having an external circumferential friction-enhancing surface for engagement with a running surface.