Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Coacting shaping surfaces
Patent
1997-09-16
2000-04-11
Davis, Robert
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Coacting shaping surfaces
425 89, 425411, A21C 1100, B30B 700
Patent
active
060481919
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a machine employed for rolling or flattening pastry or dough and for shaping it into circular disks provided with an unpressed peripheral edge, preferably used to produce and prepare pizza pies, tarts, cakes, etc.
BACKGROUND ART
Machines and devices designed for rolling pastry to be used for making pizza pies, are already known. However, they have two drawbacks: manual kneading, instead it is pressed, thereby giving the pastry features which lower the quality of the final product after baking; be evident and more spongy than the remaining part of the dough after baking), and said edge must be manually formed by the pizza chef around the periphery of the sheet of pastry which was obtained by the machine.
In practice, there does not exist a machine and/or a device which rolls or flattens pastry into circular disks provided with a peripheral edge, regardless the diameter of the disk, and which in any case can provide a peripheral edge in which the pastry is neither squeezed nor cracked.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a machine suited for preparing disks of pastry used for making pizza pies, which allows realization of disks of different diameters, always having a peripheral edge, and with features, like sponginess of pastry, identical to those of pizza pies manually prepared by skilled pizza chefs.
The present machine also allows preparation of a disk of pastry without a peripheral edge, in order to manufacture other characteristic products like the so-called "piadina romagnola", and "tigella montanara" etc. According to the present invention this object is attained by a device of the aforementioned kind, characterized in that it comprises two disks or plates: a lower one which is rotated by a motor and on whose upper face there are added or formed spiral-like helices, and an upper plate or disk which does not rotate and which is formed either by a set of circular rings which are concentric and axially mutually sliding each one more inwardly with respect to the preceding one, or by radial sectors which are hinged to a central part.
The upper plate or disk is lowered parallel with respect to the lower one while the latter is rotated. While bringing the two plates nearer to each other the mass of pastry put between the plates, at their center, is gradually flattened starting from the center towards the outside, and a peripheral edge formed by the pastry which has not yet been flattened will always be present. The amount of pastry which has been interposed between the plates or disks, and the stopping of the lowering of the upper plate at a suitable instant, will set the dimension of the disk diameter and its thickness.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, two embodiments thereof will now be described, referring to the annexed drawings, which are illustrative and non limitative and in which:
FIG. 1 schematically shows the machine of the present invention, according to a partial sectional diametrical view along the plane indicated by I--I in FIG. 2;
FIG. 2 is a plan view of FIG. 1;
FIG. 3 shows, according to a plan view, the particular form of the upper plate or disk, according to a first embodiment employing circular concentric rings;
FIG. 4 is a diametrical cross section of the upper plate, obtained along the plane indicated by IV--IV in FIG. 3;
FIG. 5 is a diametrical cross section of the upper plate or disk, according to the plane indicated by V--V in FIG. 3;
FIG. 6 is a view of FIG. 3 in the direction of the arrow VI;
FIG. 7 is a plan view of the upper plate, identical to FIG. 3, in which there is also shown the device including the idle wheels, used to push the cams of the rings which make up the plate or disk itself;
FIG. 8 is a sectional diametrical view of the upper plate or disk, along the plane VIII--VIII of FIG. 7, and it schematically shows the device which allows to lowering one after the other the different circular rings making up the upper plate;
FIGS. 9
REFERENCES:
patent: 4696823 (1987-09-01), DeChristopher
patent: 5074778 (1991-12-01), Betts, Jr. et al.
patent: 5176922 (1993-01-01), Balsano et al.
patent: 5204125 (1993-04-01), Larsen
Davis Robert
Nguyen Thukhanh T.
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