Woodworking – Splitting machine – Tapered or wedge shaped product
Patent
1986-12-23
1988-11-08
Bray, W. Donald
Woodworking
Splitting machine
Tapered or wedge shaped product
144366, 144240, 225 93, B27L 700
Patent
active
047828692
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a device for mechanically splitting cleavable objects, especially blocks of wood.
Two main types of splitting machines for mechanical cleavage of wooden blocks are today found on the market. One of said types has a fixedly mounted splitting knife against which the block of wood is pressed by a means exerting a force so that the splitting knife will cleave the block. The other machine type operates so that a conical means provided with a male thread is screwed mechanically into the block, said means splitting the block at screwing and effecting the desired cleavage thereof in this way.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a device for mechanical cleavage of wood enabling a higher cleaving capacity than what is usually normal, simultaneously as the construction of the device is relatively simple, and this object is achieved in that the device has been given the characteristic features defined in the claims.
One advantage of the invention in comparison with previously known solutions is that the invention offers a device for mechanical cleavage of pieces of wood, etc, the cleaving capacity of which is very high and the required power of which is low. Moreover, the construction of the device of the invention is very simple.
BRIEF DESCRIPTION OF THE DRAWINGS
Illustrative examples of the invention will be described in greater detail below with reference to the enclosed drawings, in which
FIG. 1 is a schematic lateral view of a mechanical wood splitting device according to the invention,
FIG. 2 is a perspective view of the device as seen from its inlet side,
FIG. 3 is a schematic view of the device as seen from its outlet side,
FIG. 4 is a lateral view on a larger scale of a splitting device according to the invention and
FIG. 5 is a section of the splitting device taken along the line V--V in FIG. 4.
DETAILED DESCRIPTION
The mechanical wood splitting device 1 comprises two splitting means in the form of splitting wheels 2 which are fixedly connected to axles 3 and 4 supporting the splitting wheels. The axles 3 and 4 are supported by the frame 6 of the wood splitting device 1 via bearings 5. The axles 3 and 4 support at one of their ends pulleys 7 and 8. Furthermore, the wood splitting device is provided with a drive means in the form of e.g., an electric motor 9 which supports a pulley 10 on its drive shaft. The frame 6 also supports a stretch roll which is arranged to be movable and by means of which the tension of a drive belt 12 can be adjusted. How the drive belt 12 is drawn is apparent from FIG. 1 and the motor 9 drives the splitting wheels 2 in the directions shown by the arrows A and B.
The wood splitting device 1 comprises further a guide chute 20 extending through the whole device 1 and having recesses for the splitting wheels 2. The guide chute 20 has an inlet 21 and an outlet 22. In the guide chute 20 between the inlet 21 and the splitting wheels 2 there is arranged a centering device 23. The centering device 23 comprises a V-shaped bottom plate 24 which is articulatedly connected to the guide chute 20 at its end 25 located immediately at the inlet 21 of the guide chute 20. Moreover, the centering device 23 comprises two side plates 26 and 27 which are also articulatedly connected to the guide chute 20 at their ends 28 and 29, respectively, facing the inlet 21 of the guide chute 20. A resilient means in the form of e.g., a rubber band 30 holds in its inactivated state the bottom plate 24 and the side plates 26, 27 against each other, as shown in FIG. 2. At its ends the rubber band 30 is connected with the side plates 26 and 27, bears upon the underside of the bottom plate 24 and lifts this.
The design of the splitting wheels 2 is best apparent from FIGS. 4 and 5. In the illustrative example shown the splitting wheels 2 have eight teeth 40 with a tooth point 41. There are transitional edges 42 between the teeth 40 on the side surfaces of the splitting wheels 2.
The mechanical wood splitting device 1 of the
REFERENCES:
patent: 1328471 (1920-01-01), Young
patent: 1691102 (1928-11-01), Witham, Sr.
Bray W. Donald
Maxwheel AB
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