Wood splitter

Details Wood splitter Wood splitter

2000-10-10

2001-12-04

Bray, W Donald (Department: 3725)

Woodworking

Splitting machine

Wedge

C144S193100, C144S366000

Reexamination Certificate

active

06325118

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to a wood splitting apparatus (hereinafter referred to as “wood splitter”).
Prior art mechanical wood splitting apparatus do not function satisfactorily in that the apparatus is frequently jammed with cut pieces of wood in the spaces between the cutting blades and that the power consumption is relatively high. Another common problem with prior art apparatus has been that they were not sufficiently safe to operate. Injuries to the operator were not infrequent.
It is therefore an object of this invention to provide an improved wood splitting apparatus which can split sawn logs efficiently without becoming jammed frequently.
It is another object of this invention to provide such a wood splitting apparatus which is safe to operate.
It is still another object of this invention to provide such a wood splitting apparatus with a relatively low power consumption rate.
SUMMARY OF THE INVENTION
A wood splitter embodying this invention, with which the above and other desirable objects can be accomplished, may be characterized as operating in two stages, each sawn log piece (the “round”) being cut into pieces of an approximately predetermined thickness (say, 3-4 inches) by means of a horizontal parting blade and dropped into a drop chamber below in the first stage and these pieces being pushed forward through a cutting block provided with a plurality of knives with vertically oriented blades to be further cut into smaller pieces in the second stage. Hydraulic cylinders for thrusting the parting blade into the round and a platen serving to push the split wood pieces through the cutting block to be made even smaller are not only controlled by a single valve such that they undergo simultaneous reciprocating motions in mutually opposite directions but also connected directly with a tube such that their hydraulic liquid can pass from one to the other for power efficiency. The floor of the cutting block is of an inverted V-shape, and the knives thereof are oriented such that the intervals between mutually adjacent pairs of them will increase on the downstream side in order to further prevent the jamming of the apparatus.


REFERENCES:
patent: 3995672 (1976-12-01), Binninger
patent: 4078591 (1978-03-01), Syrjain et al.
patent: 4799519 (1989-01-01), Forbes et al.

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