Slabber with fixed counterknife and adjustable knife and clamp
AssigneePacific Saw and Knife Company
InventorsJoseph R. Bradstreet, Jr., Keith H. Hewitt, David S. Macey
Life of this patent
Estimating the term…
Abstract
A log-slabbing chipper with multiple knife structures distributed about the periphery of a power-driven rotor head. Each knife structure includes a holder and a pair of assemblies mounting double-edge replaceable knives. Each knife is mounted between a clamp and a fixed counterknife. Each knife has a serrated back-bearing surface and each clamp has a correspondingly serrated clamping surface. Adjusting screws exert pressure on the clamps to slide the clamps and the knives with respect to the stationary counterknives to achieve desired precise edge positions.
Claims3
In log-slabbing chipper apparatus,
- a log-supporting means having a station occupied by a log being processed;
- a power-driven rotor head disposed adjacent one side of the station;
- the rotor head and the log-supporting means being relatively movable in a direction parallel to the axis of the log supported by the log-supporting means;
- at least one holder mounted on the rotor head;
- first and second double-edged knives disposed on the holder with an end of the first knife adjacent an end of the second knife, and with one edge of the first knife facing in the same direction as one edge of the second knife, the one edge of the first knife being movable in a conical cutting path with rotation of the rotor head, and the one edge of the second knife being movable in a planar cutting path with relative movement of the rotor head parallel to the axis of the log;
- a first knife-mounting assembly disposed on a first surface of the holder, the first knife-mounting assembly comprising a first counterknife fixedly mounted to the first surface of the holder, and a first knife clamp mounting the first knife on the first counterknife, the first knife being clamped between the first knife clamp and the first counterknife, the first knife clamp being provided with a first abutment surface disposed generally perpendicular to the first surface of the holder;
- a second knife-mounting assembly disposed on a second surface of the holder, the second knife-mounting assembly comprising a second counterknife fixedly mounted to the second surface of the holder, and a second knife clamp mounting the second knife on the second counterknife, the second knife being clamped between the second knife clamp and the second counterknife, the second knife clamp being provided with a second abutment surface disposed generally perpendicular to the second surface of the holder;
- and
- first and second adjusting screws threadedly received in the holder, each of the adjusting screws being adapted to exert adjusting pressure on the respective first and second abutment surfaces of the first and second knife clamps to slide the first and second knife clamps with respect to the first and second counterknives, respectively, thereby to adjust the positions of the aforesaid one edges of the first and second knives with respect to the holder.
Dependencies are inferred from the claim text.