FR2642263A1 - CUTTING MACHINE FOR GARDENING - Google Patents

Abstract

In this cutting machine, one can freely change the angle of the cutting blade unit 12 consisting of movable 6 and fixed blades 3 by interposing flexible members between the cutting blade unit and the actuating unit. movable blade arranged in the extension and from the rear ends of the movable blades.

Description

CUTTING MACHINE FOR GARDENING

  The present invention relates to a cutting machine whose angle of the blade unit can be freely changed

cutting.

  A traditional cutting machine is typically arranged so that it has non-flexible members between a cutting blade unit, composed of movable and fixed blades, and a unit

  for moving blades.

  When using non-flexible members, however, it is not possible to change the angle of the cutting blade unit. It is therefore necessary that the angle of the cutting blade unit be changed by raising or lowering the hand holding this cutting machine to adapt it to the height of the plants in the garden or hedge. Especially when cutting low garden plants, the gardener must bend his back to handle the machine. If the actuation unit of the cutting machine includes a drive source, in the vast majority of cases this drive source is formed with projections that interfere with raising or lowering the hand. In the case of shears suitable for cutting tall branches, a long handle is provided between the actuating unit and the cutting blade unit, with the result that the angle of the cutting blade unit does not can't be

  modified only by raising or lowering the hand.

  So you don't always get well-cut branches. The main object of the present invention is to provide a cutting machine which can be modified

  freely the angle of the cutting edge unit.

  Other objects and advantages of the invention

  will appear in light of the following description with

  reference to the accompanying drawings, in which: Figure 1 is a plan view illustrating a cutting machine according to the present invention; Figure 2 is a side view thereof; Figure 3 is a sectional view illustrating a tube in the case where guide members are used; and Figure 4 is a view showing a

hand type cut.

  We will now describe the present invention with

reference to Figures i to 4.

  A drive source generally designated by 2, which is traditionally incorporated in a cutting machine, of the hair clipper type, driven by a

  motor, is also used in this embodiment.

  A fixed plate 1, fixed to the front part of the drive source 2, a side surface of which is provided, projecting, with a plurality of fixed blades 3 at given intervals in a configuration similar to that of a comb in the longitudinal direction thereof. A long movable plate 4 is mounted on the fixed plate 1 in the longitudinal direction, the rear end of the latter being connected to the drive source 2. This movable plate 4 performs an alternating movement when the source is activated drive 2 by means of a switch. This movable plate 4 is typically formed from a thin steel plate in order to have a certain mechanical resistance while being flexible. If the steel sheet considered is too brittle to be bent, the movable plate can be formed by thin steel plates glued to each other to form a laminate to obtain considerable mechanical strength. Apart from the thin steel plates, the material of the movable plate 4 can be aluminum or equivalent. Materials having some mechanical strength while being flexible can be used in the present invention. As shown in the drawing, the long movable plate 4 can be formed only from thin steel plates. However, part of the movable plate can be made up of thin steel plates, and the remaining part of it can be made up of steel plates each having an average thickness, in which case connecting pieces are fixed by screws or by matting. The reference 7 designates a blade fixing screw supplied in the vicinity of the top of an angular or rounded tube 8 intended to receive and support the mobile plate 4, this fixing screw being defined as the point at which the mobile plate 4 is bent . If the movable plate 4 is long, there is a risk that the driving force given by the drive source 2 is not effectively transferred due to the flexing of the movable plate 4. In this case, guide members 13 for a long movable plate 4 are formed in the inner wall of the tube 8 and are coated with a sliding improvement resin, so as to obtain good sliding between the inner wall of the tube 8 and the movable plate 4. The reference 9 designates a blade clamping screw supplied at the rear of the blade fixing screw 7. After loosening the blade clamping screw 9, the cutting blade unit 12 can be tilted at a desired angle with a small force, as shown in the dashed lines in Figure 2. After tightening the screw 9 firmly blade clamping and after changing the angle, the cutting blade unit 12 is maintained at the desired angle. Movable blades 6 of the hair clipper type are disposed between the fixed plate 1 and the movable plate 4, and these are separated from each other, these movable blades being respectively fixed in alignment with the movable plate 4 by means of screws 10. The screws 11 fixed to the individual movable blades 6 each serve as a pivot when each movable blade 6

  performs a circular arc movement (cutting action).

  In the cutting machine thus constructed according to the present invention, the cutting blade unit is bent to a desired angle around the point defined by the blade fixing screw by loosening the blade clamping screw 9. Then, the blade clamping screw 9 is tightened, whereby the cutting machine equipped with the cutting blade unit having the desired angle is capable of

prune the plants in the garden.

  As best seen in Figure 5, the present invention can be applied to a hand type cutting machine having a shortened movable plate 4, the arrangement of which is such that the angle of the cutting blade unit 12 can be modified, the blade fixing screw 7 serving as a pivot, by loosening the screw 9

edge clamping.

  If the present invention is to be applied to shears (not shown) suitable for pruning tall branches and -classified among cutting machines, instead of a bar shape in the extension of the movable blades, a thin plate d strip steel is used; or, alternatively, a thin strip-shaped steel plate can be used for part of the bar, and the steel plate is connected to the bar by a screw or by stamping. According to the present invention, the flexible member is disposed between the cutting blade unit and the actuation unit, and it is therefore possible to change the angle of the cutting blade unit by bending the flexible organ. With this arrangement, an operation such as mowing a lawn or pruning garden plants, with a low position, can be performed without bending the back. The tall branches, which require a high position, can also be

easily trimmed.

  With the cutting machine according to the present invention, the angle of the cutting blade unit can be freely changed simply by bending the flexible member provided between the cutting blade unit and the unit

actuation.

  Although the illustrated embodiments of the present invention have been described in detail with reference to the accompanying drawings, it should be understood that this invention is not limited to these specific embodiments. Various modifications can be made by those skilled in the art without departing from the scope of the invention.

Claims (6)

  1. Cutting machine comprising: - a cutting blade unit (12) consisting of movable blades (6) and fixed blades (3); and - an actuation unit adapted to said movable blades and arranged in the extension of said movable blades - from their rear end, characterized by a flexible member 'disposed between said cutting blade unit and said actuation unit, by means of which the angle of said cutting blade unit can be freely changed by bending said flexible member. 2. Machine according to claim 1, characterized in that said flexible member uses a thin plate of steel.   3. Machine according to claim 1, characterized in that it further comprises a screw (7) for fixing   blade and a blade clamping screw (9).   4. Machine according to claim 1, characterized in that said actuation unit uses a source actuation (2).   5. Machine according to claim 1, characterized in that it comprises a long movable plate (4) and guide members (13).   6. Machine according to claim 1, characterized in that said guide members are coated with a resin facilitating sliding.