US 5,441,445 AGranted

De-hiding tool

AssigneeKentmaster Manufacturing Co., Inc.

InventorsRalph K. Karubian, Thomas G. Surman

Life of this patent

Estimating the term…

Loading patent…

Abstract

A de-hiding tool includes a handle section with a long blade cover, a pair of counter-rotating and oscillating cutting disks mounted face-to-face and driven by eccentrically mounted drive arms operated by a self-contained air motor, a short blade cover mounted to a side of the cutting disks opposite from the long blade cover, and an adjustable blade support which includes an adjustment shaft extending through the blade covers and providing a means for adjusting the spacing between the blade covers from the outside of the tool housing. The blade adjustment system includes an insert with threads accessible from the outside of the housing to adjust the size of a gap between the blades by corresponding movement of a spacer inside the cover. This controls the face-to-face pressure on the blades to make them cut more efficiently and to compensate for the blades being ground thinner when resharpening the blades.

Claims12

Dependent claims

A de-hiding tool comprising:

a pair of cutting blades,
an elongated handle section containing an air motor for connection to a source of air under pressure,
a rigid upright cover supporting plate carried on the handle section, the cover supporting plate having an air motor drive arm bearing support and having a top edge above which the pair of cutting blades are supported,
a first blade cover rigidly affixed to the cover supporting plate and extending above the top edge thereof, the first blade cover having an inside face spaced above the top edge of the cover supporting plate and having an opening extending entirely through the first blade cover above said top edge,
a second blade cover mounted above the handle section and extending above the top edge of the cover supporting plate, the second blade cover having an inside face facing toward the inside face of the first blade cover so the inside faces of the blade covers confront one another on opposite sides of a gap in which the cutting blades are mounted, the second blade cover having an opening extending entirely through it in alignment with the opening through the first blade cover,
a blade supporting shaft extending through the aligned openings in the first and second blade covers so that the shaft is rigidly supported by the blade covers and is spaced above the top edge of the cover supporting plate, and
blade mounting means carried on the blade supporting shaft to support the pair of cutting blades on the shaft in the gap between the confronting inside faces of the first and second blade covers,
the air motor including drive arms mounted on said bearing support and connected internally to the cutting blades for driving the blades in an oscillating and counter-rotating fashion while the blades are supported on the mounting means of the blade supporting shaft.

5 more elements

In a de-hiding tool of the type having an elongated handle section containing an air motor for counter-rotating a pair of disk-like cutting blades with an oscillating motion at high speeds, in which the air motor drives a pair of drive arms for rotating the cutting blades, and in which the cutting blades are mounted in a gap between a pair of blade covers carried on the handle section, the improvement comprising an elongated support member mounted in a fixed position to at least one of the blade covers, a bearing mounted on the support member to support the blades for rotation in the gap between the blade covers, a first adjustment means moveable relative to the bearing and accessible from outside the blade covers to move one of the cover plates relative to the bearing to an adjusted position so as to reduce the effective width of the bearing that supports the cutting blades, and a second adjustment means engaged with the first adjustment means and accessible from outside the blade covers to releasably lock the first adjustment means in said adjusted position, said first adjustment means producing relative travel between the blade covers to reduce the width of the gap to accommodate for the adjustment in the effective width of the bearing.

A de-hiding tool comprising:

a pair of cutting blades,
an elongated handle section containing an air motor for connection to a source of air under pressure,
a first blade cover carried by the handle section for extending upwardly along one side of the pair of cutting blades, the first blade cover having an inside face for facing toward the cutting blades and having an opening extending entirely through the first blade cover,
a second blade cover carried above the handle section and having an inside face facing toward the inside face of the first blade cover and having an opening extending entirely through the second blade cover in alignment with the opening through the first blade cover,
a support member secured in the opening of the first blade cover and having a passage aligned with an axis through the center of the cutting blades,
a locking screw secured in the opening of the second blade cover and having a shaft extending through and secured in the passage of the support member so that the locking screw and support member form a blade supporting shaft for the cutting blades while the two blade covers are secured in a fixed confronting position with respect to each other with a gap extending between them for receiving the mounted cutting blades,
an adjustable blade support member carried by the blade supporting shaft to support the pair of cutting blades in the gap between the confronting inside faces of the blade covers,
a blade cover insert adjustably secured to the opening in the second blade cover and adjustably secured to the locking screw for holding the blade support member in a first position with the gap in a widened position in which the blade covers apply pressure to the faces of the blades when the blades are mounted in the widened gap, the locking screw retaining said blade cover insert in the first widened position,
the blade cover insert being movable with respect to the second blade cover toward an undercut space inside in the second blade cover, and
adjustment means on the locking screw and the blade cover insert accessible from the exterior of the blade covers for moving the blade support member into the undercut space to narrow the gap to a second narrowed position in which the cutting blades are mounted for operation while the insides of the blade covers continue to apply pressure to the faces of the cutting blades.

7 more elements

Dependencies are inferred from the claim text.