Cutlery – Cutting tools – With blade moving means
Patent
1994-08-25
1996-09-03
Payer, Hwei-Siu
Cutlery
Cutting tools
With blade moving means
452133, A22B 516
Patent
active
055511562
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a revolving blade skinning device with a drive motor which drives, via a gear, a revolving blade rotatably seated in a blade housing between two housing shells.
Such a revolving blade skinning device is known from DE-PS 392 115, wherein the gear is a miter gear, which directly drives the revolving blade. Seating and disposition of the miter wheels require a large structural height. The revolving blade is disposed eccentrically with respect to the handle, and the tilting moments occurring during operation, because of the asymmetry, make operation more difficult.
A worm drive is furthermore known from DE-PS 538 891. This drive is very voluminous and the blade is also disposed very asymmetrically here.
A symmetrical blade disposition is known from DE-PS 674 322. It has a miter wheel of very large diameter supporting the revolving blade, which is expensive to produce. A large volume together with a great structural weight in particular is also necessary here.
SUMMARY OF THE INVENTION
By way of avoiding the described disadvantages, the present invention has as an object providing an easily manipulated flat revolving blade skinning device which runs particularly quietly and has a low noise level, along with low structural weight and small structural volume.
This object is attained by characterizing features of claim 1 the gear being provided with a belt drive with a drive wheel directly or indirectly driven by the motor, and a blade support wheel driven by means of a belt and rotatably seated between the housing shells. Moreover, the revolving blade and the axis of rotation of the drive motor are located in the same plane.
A flat construction is made possible because of the use of a belt drive. The elastic belt drive absorbs oscillations, so that an operation free of fatigue and with little work noise is made possible.
The blade support wheel can have at least one, preferably a plurality of catches distributed over its circumference for a simple and rapid blade change, wherein the heads of flat head screws which project through openings in the revolving blade can be used as the catches. In a structurally particularly simple manner the blade support wheel can have a hub rotatably seated on a bearing bolt, wherein the belt of the belt drive is guided directly over this hub or over a belt wheel placed thereon. To save weight, the bearing bolt can be fixedly pressed into one of the housing shells and the other housing shell can be screwed at an exact distance via a clamping screw, wherein the exact distance between the housing shells is fixed by the contact faces of the bearing bolt and the housing shell, so that the revolving blade can revolve freely without seizing even when firmly prestressed, while it is still assured that the guide gap between the housing shells and the revolving blade is relatively narrow in order to prevent the penetration of foreign matter, if at all possible.
A particularly good revolving blade guidance can be achieved in that the bearing shells have at least in part guide bars circulating concentrically with respect to the bearing bolt and at a distance therefrom.
Simple cleaning and a simple blade exchange can be made possible in that after loosening the clamping screw and removal of the housing shells the revolving blade rests easily exchangeable on the blade support wheel without a particular fastening.
Quiet running of the drive wheel can be achieved in that it, together with a miter wheel, is rotatably seated between two bearings disposed in the blade housing, wherein the miter wheel cooperates with a second miter wheel driven by the drive motor. This makes a compact construction possible, which saves space and structural weight.
A particularly exact seating and quiet running as a result of this can be achieved in that the drive motor with the second miter wheel and the bearing which is near the first miter wheel are received in a part of the blade housing which is connected to form one piece. In this,way the processing
REFERENCES:
patent: 4368560 (1983-01-01), Wetzel et al.
patent: 5122092 (1992-05-01), Abdul
patent: 5311664 (1994-05-01), Abdul
patent: 5445561 (1995-08-01), Elmer
Payer Hwei-Siu
Schmid & Wezel GmbH & Co.
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