FR2583971A1 - Device for splitting wood, concrete and other inorganic materials - Google Patents

Abstract

The invention relates to a manual device for splitting wood, concrete and inorganic materials in general. It consists of a spindle 1 comprising at its base a wedge 2 and at its other end a tapped hole 3 into which a bolt 4 can be screwed which serves to hold a washer 11 acting as an end-of-travel stop. A flyweight 7, pierced longitudinally and placed at the lower part of a tube 8 to which it is welded, moves on this spindle which acts as a guide and strikes the flyweight receiver 6 fixed to the lower part of the spindle. The device, according to the invention, is intended for splitting wood, concrete and other inorganic materials.

Description

 The invention relates to material for the bursting of wood, concrete and minerals in general.

 It will find its application in particular for the bursting of logs, cemented parts or stones which one wishes to split.

 Currently lton can split wood with an ax or break concrete with a chisel and hammer, but the handling of these tools is practically reserved for professionals.

 There are also motorized devices, powered by electricity or hydraulic power, but which are priced higher.

 Others are manual but are designed for wood exclusively or for Breton without power between used for both if simultaneously, these devices generally consist of a cutting axis at one end sliding in a tube closed at the other end by a mass.

 The main purpose of the present invention is to provide a versatile material for the bursting of wood and most minerals, simple and safe handling within the reach of all, effective, nevertheless requiring only minimal effort from the user and a low cost price.

 Figure I shows, in section, an embodiment of the spark gap with removable handle, according to the invention.

 Figure 2 shows, in section, an alternative embodiment of the spark gap.

 Figure 3 shows, in section, the lower part of a chisel spindle.

Figure 4 shows, in section, the lower part of a spindle pin
The device shown in Figure I has a pin (i) having at its base a corner (2) and at its other end a defrauded hole ta (3) into which is screwed a bolt (4). This bolt is used to maintain a washer (II).

 A mass receiver in the form, for example, of shoulder (a) is welded on the lower part thereof.

A mass (7) pierced longitudinally in its center is placed in the lower part of a tube (8) which is welded to it, it moves axially on the spindle (I)
A wooden or plastic handle (9) is pressed at the upper end of the tube inside which it is held by a screw (10) ensuring the tightening of two wings defined by the slots (I2).

 A corner (2) is attached by welding to the lower end of the spindle, it will be tapered and sharpened to present a minimum of resistance to penetration.

 The mass (7) according to a preferred embodiment, consists of a steel circle of an outside diameter sufficient to obtain the weight necessary for the effectiveness of the spark gap. It is drilled in the center of a hole (5) with a diameter about I M / M greater than the diameter of the spindle to allow it to slide inside and serve as a guide.

 The tube (8) is welded to the mass, it has an inner diameter greater than the washer (II), the outer diameter of which is also greater than that of the spindle. This tube constitutes a casing but does not serve as a guide.

 This washer (II) is of a diameter greater than the bore (5) of the mass because it must come into abutment against the latter, in the maximum lifting phase thus constituting a stroke limiter and preventing the mass (7 ) does not come off the spindle (I).

 For its use, apply the wedge (2) to the piece to be split, lift the mass assembly (7) -tube (e) by means of the handle (9) and allow the assembly to drop, the mass (7) laugh hit the mass receiver (6) causing the wedge (2) inside the material to be split.

 The mass preceptor (6) is located at the bottom of the device, leaving between it and the corner only the length necessary for penetration into the material to be split.

 Because this length is reduced to a minimum, vibrations in the spindle are avoided, which would occur if this mass receiver were located at the end of the spindle opposite the corner. The handling of the device is also much easier since the center of gravity is considerably lowered.

 By unscrewing the screw (io) we remove the handle we then unscrew the bolt (4) the washer (ii) is released and the spindle (i) is released from the mass (7) thus allowing to replace or replace it with a broach-chisel or broach-chisel assembly.

 In the embodiment according to FIG. 2, the tube (10) is longer than that in FIG. I and does not have a sleeve at its ex tremite.

 According to this variant the spindle (i) is also longer and the head of the bolt (4) is brought closer to the end of the tube and can be easily unscrewed.

The spindle being longer than in the embodiment Fig. I can use this device without the washer (II) which limits the stroke
This solution is particularly appreciated when the volume of a piece of wood requires the installation of several corners to burst it.

 Another advantage of this variant is to be able to use the spindle-cointbroche-chisel or chisel spindle alternately without any disassembly.

Claims (7)

 I. Device for splitting wood, concrete and other minerals characterized in that it is in the form of a spindle (I) cutting at one end (2) guiding a sliding mass (7) which is welded at the end bottom of a tube (8) serving as a casing and used to introduce a handle (9) of wood or other material. A mass preceptor (6) is fixed on the lower part of the spindle above the cutting part.  2. Device for the bursting of wood, concrete and other minerals according to claim I, characterized in that it has a removable means of limiting the stroke of the spindle (î) in the mass (7) and d 'avoid its dislocation.  3. Device for splitting wood, Breton and other minerals according to claim 2 characterized in that the spindle stroke limiter (I) is constituted by a washer (ii) held by a bolt (4) which is screwed into a threaded hole (3) in the upper end of the spindle.  4. Device for splitting wood, concrete and other minerals according to claim I characterized in that the mass receiver (6) is attached to the spindle by welding and is in the form of a thick washer .  5. Device for the bursting of wood, concrete and other minerals according to claim I characterized in that the mass assembly (7) and tube (8) is of a length greater than the part of the spindle located above of the mass receiver (6).  6. Device for bursting wood, concrete and other minerals according to claim I characterized in that the tube (8) is of a length greater than the stroke of the spindle (I) when it is provided of its stroke limiter.  7. Device for splitting wood, concrete and other minerals according to claim I, characterized in that a handle (9) is held by a screw (io) at the split upper end of the tube (8).  B. Device for bursting wood, concrete and other minerals according to claim I, characterized in that it is associated with different types of pins which can be used alternately such as chisel pins (13) or chisel pins (I4)