JPH02401A - Twig-cutting sickle - Google Patents

Abstract

PURPOSE:To provide the title sickle so designed that the connecting part between an edge and a long handle is provided with a movable mechanism with its lower end fitted with a stopper, thereby being easy to introduce and regulate and enabling twig-cutting work to be made with ease on the ground. CONSTITUTION:An edge 10 is hooked on a position near the roots of twigs to be cut off, and a grip is once pushed upward followed by forcefully pulling it downward. As a movable mechanism is provided between the end member 22d of a long handle and a cylindrical part 21, the whole construction member of the handle below said member 22d is moved downward. Thereby a tensile spring 24 connecting both the member 22d and cylindrical part 21 is greatly extended. When the member 22d is pulled down, a bolt 22g of the member 22d vigorously impinges on a stopper 25 at the lower end of the cylindrical part 21. The resulting impact force is transmitted to the edge 10, which behaves so as to be suddenly pulled downward, and the edge surface 11 curved against the twig acts so as to cut said twig by pulling force. When the edge 10 is raised, against the spring 14, to the limit of a rocking range controlled by both a regulating bolt 21b and a projection 12, the impact force acts on the twig so as to cut it by blows.

Description

[Detailed description of the invention] Industrial applications This invention is useful for so-called pruning work in forestry. Regarding the branch sickle.

Conventional technology Is pruning work in forestry done manually using saws, axes, etc. A tree-climbing engine cutter is generally used.

The problem that the invention seeks to solve However, when it is done manually using a saw or ax, etc. Because it is necessary to climb up high into each tree to work. It is extremely dangerous and reduces work efficiency. The tree-climbing engine cutter is heavy, so it cannot be used locally. In addition to being difficult to transport, the machine is complicated and expensive. Met.

SUMMARY OF THE INVENTION An object of the present invention is to provide a new pruning sickle that allows pruning work to be done from the ground without having to climb a tree, and which can be done simply by hand.

Embodiment The branch sickle consists of a curved blade 10 and a handle 20 (FIG. 1).

The blade 10 forms a double-edged blade surface 11 on the inside of the sickle-shaped curve. At the same time, a protrusion 12 is formed at the base on the back side.

The blade 10 is swingably attached via a bolt 13, and is biased downward by a spring 14.

Further, the swinging range of the blade 10 is restricted by the adjustment bolt 15 and the protrusion 12 coming into contact with each other.

The handle 20 has a movable mechanism at its tip, which includes a cylindrical part 21 that grips the blade 10, a tension spring 22 incorporated therein, and a stopper 23, while a three-stage telescopic mechanism is provided below the handle 20. A removable case part 25 is fitted at the end of the telescopic part 24 (Fig. 2), and the telescopic part 24 is connected to the telescopic part 24 (Fig. 2).
A tool bag 27 is housed in addition to a grip part 26 that communicates with each other. A removable cap 25a is provided at the tip of the case 25.

A distal end 24 a of the extensible portion 24 is inserted into the cylindrical portion 21 and connected to the cylindrical portion 21 via the tension spring 22 . Tip 24
A steel wire 24b is wrapped around the cylindrical portion 21.
A long hole 21a is provided in the hole 21a.

The details of the stopper 23 are as shown in FIG.

When the blade 10 is hooked on the branch E and pulled downward (Fig. 4 (A))
, the blade 10 swings in the direction of arrow K1 in FIG. At the lower end where the stopper 23 of the movable mechanism becomes effective, the impact is strongly transmitted to the blade 10 and can cut off the branch E ((C) in the same figure).
When the cutting is completed, the spring 14 and the tension spring 22 return to the original state ((D) in the same figure).

Effects of the Invention As described above, the present invention has the excellent effect of easily cutting off branches at a high position from the ground below the tree.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram of the main parts, FIG. 2 is a structural diagram of the handle, FIG. 3 is a structural diagram of a stopper, and FIGS. 4 (A) to (D) are diagrams showing the operation during use.

Claims (1)

[Claims] 1) A pruning tool comprising a curved blade and a handle attached to the blade, and a movable mechanism having a stopper at the lower end is incorporated in the connection between the blade and the handle. Sickle. 2) The blade is swingable at the base, and
The branching sickle according to claim 1, wherein the blade is biased in a downward direction via a spring. 3) The branching sickle according to claim 1 or 2, wherein the handle is biased upward via a tension spring included in the movable mechanism.