Woodworking – Splitting machine – Wedge
Patent
1997-03-11
1998-01-06
Bray, W. Donald
Woodworking
Splitting machine
Wedge
1441931, 1441955, B27L 700
Patent
active
057043744
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a hand-operated wood-splitter with striking weight movable along a rod connected at its lower end to an axe or splitting wedge against which the striking weight is intended to strike.
BACKGROUND ART
Splitting wood in the traditional manner is not without risk and various constructions have therefore been invented in order to eliminate these risks. A drawback of these constructions is that they are far too expensive to suit people requiring only small quantities of fire-wood.
The first paragraph above describes a construction already known (FR 2541173) which offers increased safety for the user. However, its drawbacks include it being impossible to easily remove the axe when it has become lodged in the chunk of wood. Another drawback is that this wood-splitter does not have an arrangement for splintering wood to kindle a fire.
DESCRIPTION OF THE INVENTION
The object of the invention is a device in which the advantages of the known arrangement are exploited, while at the same time the disadvantages are eliminated. The wood-splitter according to the invention is characterized in that the rod is provided at its upper end with a stop nut or other stop means so designed that a stroke from below by the striking weight facilitates removal of the axe from the wood, and that the axe (splitting-wedge) is secured to a side grip movable along a second rod secured at its lower end to a stump or a stand, the side grip and the axe being rotatable around said second rod, and in that a nut or ring is also secured at the lower end of the rod for the striking weight, said nut or ring being movable to a limited extent in vertical direction in order to reduces the stresses. Thanks to the forced guiding of the striking weight, the arrangement is substantially risk-free and, by rapidly moving the striking weight back towards the top nut, etc., the axe is also removed from the chunk of wood where it has lodged--this also without risk and using little energy. The nut or ring, movable to a limited extent, which is located at the lower end of the rod for the striking weight, provides an extra force, i.e. an extra "push-off" at the start of the upward stroke, thereby increasing efficiency and reducing stresses.
In a preferred embodiment of the invention the side grip is provided with a cutting edge whereby, with the assistance of the striking weight, possibly after swinging the side grip about the rod, wood for kindling a fire can be splintered. This advantage is not shown within the known technology and enables this phase also to be performed without risk through forced guiding.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in more detail in the accompanying drawings in which FIG. 1 shows a view from the side of a hand-operated wood-splitter and FIG. 2 shows a detail of the invention.
DESCRIPTION OF EMBODIMENT
FIG. 1 shows the wood-splitting equipment seen from the side. It comprises a stump or stand (10) and an axe or splitting-wedge (5) with a cutting edge (6) for splitting chunks of wood or other pieces of wood. The wood-splitter also includes a striking weight (1) weighing for instance 4 kg, movable along a rod (2) which is secured at its lower end to the axe (splitting-wedge 5) via a plastic washer (3) and a bolt (4). The axe (splitting-wedge) is supported by a side grip (8) provided at its lower end with a cutting edge (15) for splintering kindling. The side grip with axe is rotatable about and slidable along a second rod (7), together with a handle (11). (9) denotes tightening washers.
In order to chop wood the apparatus is lifted by means of the handle (11) and the axe turned to splitting position above a chunk of wood, in contact therewith. The striking weight (1) is then raised and forced down towards the axe (5) which thus acquires considerable force for splitting the log. The forced guiding prevents the operator from sustaining any injuries. If the axe lodges in the log, the striking weight (1) can be forced up towards the stop nut (12) and the a
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