Woodworking – Special-work machine
Patent
1984-02-13
1985-09-10
Bray, W. D.
Woodworking
Special-work machine
144162R, 144208G, 144377, 409166, B27C 100, B27L 1100
Patent
active
045400318
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION AND PRIOR ART
The present invention is related to a machine for removing material from logs, in particular root logs having swellings to be removed.
Such a machine is disclosed in the applicants Swedish patent application No. 7712493-1. The arrangement of the milling unit for processing the end portion of the log freely protruding from the holding device from below has the advantages that the milling of the root swellings can occur while maintaining the general main shape of the log at the same time as it will be easy to avoid, by means of suitable shield and protection devices, millings to be thrown about without having to reduce the possibility of the operator to visually supervise the processing procedure.
The machine according to the previous patent application is constructed so that the logs are fed sidewardly into the machine. In certain cases, it may be desirable to have also other possibilities for introducing logs into the machine. Furthermore, the milling unit is in this machine movably arranged, which makes the structure somewhat complicated. Thus, it would be desirable to be able to devise ways to achieve a more simple and more non-expensive embodiment.
SHORT DISCLOSURE OF THE INVENTION
The object of the present invention is to devise ways for satisfying the desires presented hereinabove within the scope of the protection defined by the previous patent application.
In accordance with the present invention, this object is obtained by the features contained in the characterizing portion of claim 1. The design of the holding device as including elevatable bearing members makes it possible to feed the logs into the machine also in its longitudinal direction by designing these bearing members for allowing longitudinal transport of logs. Furthermore, by the location of the bearing members relative to the milling unit defined in claim 1, the combination effect is obtained that the bearing members preferably designed for longitudinal transport may be given the task to move the log into contact with the milling unit so that, accordingly, the milling unit may be mounted stationary on the frame of the machine.
SHORT DISCLOSURE OF THE DRAWINGS
With reference to the appended drawings, a more specific disclosure of an embodiment example of the invention will follow hereinafter.
In the drawings;
FIG. 1 is a diagrammatical side view of the machine according to the invention;
FIG. 2 is a view of the machine from above; and
FIG. 3 is a cross section along line III--III in FIG. 2.
DETAILED DISCLOSURE OF A PREFERRED EMBODIMENT
The machine illustrated in the drawings and adapted for removing material from logs, in particular root logs having swellings to be removed prior to sawing of the logs, comprises a frame denoted 1. On this frame, there is a holding device 2 for supporting the log 3 with an end portion 4 thereof protruding freely from the holding device. The holding device is also adapted to cause the log to rotate. Furthermore, the machine comprises a rotatable milling unit 5 having peripherically located processing elements and being located for processing the end portion 4 of the log protruding freely from the holding device 2 from below. With the expression "from below", it is understood that the milling unit during the processing should be in contact with the lower half of the log.
The holding device 2 comprises bearing members 6 operable for moving the log between an upper position (FIG. 1 and 3) and a lower position, which is reached by moving the bearing members downwardly in the direction of arrow 7 in FIG. 1. The bearing members 6 are located in such a way relative to the milling unit 5 that a log having root swellings 8 or the like and located on the bearing members on lowering thereof in a direction towards their lower position enters into contact with the rotating milling unit.
The milling unit 5 is stationarily mounted to the frame 1 of the machine. With the expression "stationarily" it is intended that the mounting devices of the milling unit preferably are such tha
REFERENCES:
patent: 4363342 (1982-12-01), Tannerstal
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