FR2462975A1 - ROTARY KNIFE - Google Patents

Abstract

ROTARY KNIFE COMPRISING THREE CUTTING DISCS 22, 24 AND 26, MOUNTED IN A BODY SHAPED BY SIDE WALLS 12, 14 AND 16, SO THAT THE USER POWERS OR CUT A MATERIAL OF RELATIVELY WIDE OR RELATIVELY NARROWS OR SLICES, OR CAREFULLY SLICE THIS MATERIAL, AND THAT ACCORDING TO THE FOLLOWING ANGLE WHICH THIS KNIFE IS BRINGED INTO CONTACT WITH THE ABOVE MATERIAL, THE CONSTITUENT ELEMENTS OF THIS ROTARY KNIFE PREFERABLY MADE IN THE FORM OF A SINGLE PIECE BY INJECTION.

Description

Coutec-u rotary The present invention relates to a rotary knife,

  more specifically a rotary knife for

pastry doughs.

  Knives for pastry hookers

  usually stand in one or more discs or wheels

  cutting, mounted on a single axis. The knives

  carrying multiple cutting discs are generally re-

  adjustable so that a sheet of pastry dough can be cut into strips or strips of various widths,

  and this by adjusting the position of the discs along the axis.

  Generally, such knives are of a cons-

  rather complex truction, supposing the use of nom-

  large elements, generally made of metal, and due to their complexity, these knives are not easily adjustable

  to cut a sheet of pastry dough in la-

variable widths.

  In U.S. Patent No. 663,262, a device has been provided for cutting out

noodle dough, this device comprising discs

  panis rotatably mounted on a common axis to cut

the dough in strips of various widths, and this in

pouring the device. However, the proposed structure

  by this patent is of a rather complex construction, exi-

  managing the production of many distinct elements.

  The object of the present invention is to provide

  an improved rotary type knife, particularly suitable for

rement well as a pastry tool.

  According to a preferred embodiment of the present invention, the rotary pastry knife

consists of a very simplified device, formed of rela-

very few components which are molded in one piece from a synthetic polymer. The device as well

molded in one piece can easily be separated

  constituent elements which, when assembled without

2 2462975

  need special tools, give a tool

  very simplified and multipurpose pastry shop.

  As all the components of the knife according to the preferred embodiment are made of a polymer, this avoids the problems

associated with corrosion.

A particular advantage of the invention is further constituted by the significant savings made during production since it is a construction

totally made of a polymer.

The invention, as well as its characteristics and advantages, can be better understood thanks to the

  following description given with reference to the drawings

nonlimiting annexed.

Figure 1 is a perspective view of a

  preferred embodiment of a rotary knife

weaving according to the invention, this view showing the disor

  page of relatively narrow strips of dough

weaving.

  Figure 2 is a perspective view of the ccu-

  rotary baking pan according to the present invention, this view showing the use as a cutting wheel.

Figure 3 is a perspective view of the cou-

  rotary baking tray according to the invention, this view showing the cutting of relatively wide strips

of a dough.

  Figure 4 is a longitudinal sectional view, on a larger scale, of the rotary pastry knife

according to Figures 1 to 3.

Figure 5 is a sectional view taken along

arrows 5-5 in Figure 4.

  Figure 6 is a sectional view taken along

arrows 6-6 in Figure 4.

Figure 7 is a perspective view of a part molded in one go and comprising the elements

  constitutive of the device of the present invention.

  According to Figures 1, 2 and 3, the knife ro-

  pastry tative generally designated by

  reference number 10 includes a walled body

  spaced spheres 12 and 14 interconnected by a part

  upper king 16. In the preferred embodiment which is illustrated, the upper wall 16 consists of a

  curved extension of the side walls 12 and 14. These

these are kept in a general position

parallel as will appear more clearly from the

next cry.

  The knife 10 comprises two axes 18 and 20 mon-

  tees in rotation in the body of this knife, and more

particularly in the spaced side walls 12 and

14. Axes 18 and 20 are, generally speaking,

  parallel to each other and spaced apart in the longitudinal direction,

generally speaking but not necessary-

  lying in a common horizontal plane.

  According to the preferred embodiment of the rotary knife 10, at least three cutting discs 22, 24 and 26 are provided, one of these discs, namely the disc 22, being mounted on one of the axes, namely the axis

  18, while the other two discs 24 and 26 are shown

tees on the other axis 20.

As can be seen by comparing Figures 1, 2 and 3, illustrating the use of the rotary knife

  , a sheet of pastry dough 28 or similar material

  laire is shown as being spread on a flat surface, generally horizontal in appearance, such as a pastry table, not shown, on which a portion of

dough was rolled to form a sheet.

In Figure 1, we can see that when

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  the user grabbing the side walls 12 and 14 of the cou-

  rotary plate 10 between the thumb and forefinger moves this knife across the sheet of paste 28 while the three cutting discs 22, 24 and 26 are in rotational and cutting contact with paste 28, two relatively narrow strips of dough 30 and 32 are cut from the pastry dough sheet 28. It will be understood that, when the rotary knife 10 is used according to the mode illustrated in FIG. 1, where the disks 22, 24 and

26 are of equal diameter, the knife body is gener-

  horizontally relative to the plane of the support surface of the dough sheet 28, when the axes 18 and

  lie in a common horizontal plane.

  It will also be understood that the shafts 18 and 20 need not necessarily be in a common horizontal plane with respect to the body of the rotary knife, since such an interrelation, as well as the spacing in the longitudinal direction between the two parallel axes

  18 and 20, can be selectively changed as follows

  vant the diameter of the cutting discs 22, 24 and 26. Under

  this last report, it will usually only be necessary

  that the cutting discs located on a given axis

  born of the same diameter so that the rotary knife

  acts according to the present invention. -

  In the case of FIG. 2, it can be seen that the body of the rotary knife 10 is presented in contact with

  rotation and cutting; on the leg sheet 28 so

  re that the common plane of the axes 18 and 20 is not horizontal relative to the support surface of the dough sheet 28, only the disc 22 being in rotational and cutting contact with the dough sheet 28 as will normally be the case when a decision has to be made

  a sheet of dough in a desired geometric shape.

  If we look at Figure 3, we can see that the user, by grasping the rotary knife 10 as described above, puts the cutting discs 24 and 26 in rotational and cutting contact with the dough sheet 28, so to cut it to create a wide strip or strip 34 of dough. We will understand that, in

  in this case, the user presents the rotary knife 10 in con-

  cutting tact with dough sheet 28 so that the common plane of axes 18 and 20 is inclined by

  opposite way compared to the case of Figure 2.

  Referring to Figure 7, it will be seen that the rotary pastry knife 10 is illustrated therein as being constituted by a single molded part, as formed by traditional molding techniques.

  by injection, being made of a synthetic polymer

  suitable tick, such as polypropylene, polyethylene

  ne of high density, etc, having the phy-

  suitable conditions, for example a rigidity at temperatures

  ambient tures, etc. We can see that the body of the cou-

  rotary plate 10 comprises the side walls 12 and 14 and, in extension, the curved upper wall 16. For the assembly of the constituent elements of the rotary knife to arrive at the operational tool as illustrated in Figures 1 to 3, the side walls and the upper wall are folded back on themselves along a hinge area, generally designated by 34. It will be understood that this hinge area

  34 need not be of the hinge type

  re effective since, as soon as the various elements

  guardians forming the rotary knife 10 were separated from

  the single molded part illustrated in Figure 7 and as-

  seem to create the operational tool, it is generally

  It is no longer necessary to have to repeatedly pivot the side walls and the top wall 12,

  14 and 16 around the longitudinal zone forming a hinge

re 34.

  Considering FIG. 7, it can be seen that the axis 18 and its associated cutting disc 22 will be broken or otherwise separated from the side wall 14 at a point generally designated by 38.

  normally found in a casting connection of a diameter

  be relatively weak existing between one end of the axis 18 and the side wall 14. Similarly, the axis 20 and its associated cutting discs 24 and 26 are

  separated at the location of an existing casting connection

  be one end of the axis 20 and the side wall 12, and

this as indicated in 40.

  As can also be seen in Figure 7, the internal surfaces 13 and 15 of the various walls 12, 14 and 16 have tabs formed in one piece with

  them for their nesting. Depending on the form of realization

  sation illustrated, a central tab 42 provided on the surface

  inner face of the wall 12 cooperates with two legs es-

  paces 44 and 46 provided on the internal surface of the pa-

  -20 king 14, the tab 42 having a curved surface 48 com-

  of the curved internal surface 15 of the associated upper wall 16, so that, in the assembled position, the upper part of the rotary knife 10 is held so that the side walls 12 and 14 are generally parallel and that , like this

  will appear more clearly from the following description, the

  the aforementioned tabs, and in particular the tab 42, prevent a flattening of the upper zone of the rotary knife 10. The tabs 44 and 46 preferably cooperate with the

  leg 42 so as to limit, together with the zo-

  mounting nes of the trees which will be described later, any movement of the side walls 12 and 14 relative

  to their parallelism. It will be understood that it is not necessary

  make sure that the tabs 42, 44 and 46 are of the pressure type mounting, and this will appear more clearly

thereafter.

  In FIG. 7, it can be seen that the lower walls of the side walls 12 and 14 have an area comprising means for the rotational mounting of the

  axes 18 and 20 in their operating position illus-

shown in Figures 1, 2 and 3.

  In this respect, and as will be better understood by comparing Figures 4 and 7, the means for

  rotational mounting of axes 18 and 20, depending on the form

  me of preferred embodiment, consist of slots 50

  in the form of keyholes whose position and di-

  mensions are such that they can receive rota-

  tion of the axis portions of reduced diameter. 52 of the axes 18 and 20, these being thus arranged in a plane

  common general away from each other.

  According to the preferred embodiment illus-

  trée, the cutting discs 22, 24 and 26 are formed in one piece with their corresponding axes 18 and 20 and are thus fixed relative thereto. The axis 18 comprises lateral spacing elements consisting of axis ends 54 extending laterally, being normally equal, on each side of the cutting disc 22, the combined length of the axis portions 54 and the cutting disc 22 being such that, when the reduced diameter portions 52 of the axis 18 are mounted by pressure in two slots

  opposite 50 in the form of keyholes, the walls

  12 and 14 will be installed in their alternate position

  general parallel lure and the outer portions of

  hub 56 of axes 18 and 20 will act to maintain these pa-

  side kings 12 and 14 in the closed position il-

glossed by Figures 1, 2 and 3.

  We will also understand, considering the ú -

  gure 7 and also thanks to the other figures which will be

246297S

  described below, that the spacing axis portions 54 need not necessarily be provided on the

  two axes 18 and 20 and, in fact, they will not exist nor

badly not on axis 20.

  Under this last report and considering more

  particularly Figures 5 and 6, we can see qubn.

  with regard to axis 20, the spacing of the disks

  pants 24 and 26 formed in one piece, on their corresponding axis

  during 20 is such that the surfaces facing the ex-

  the cutting discs 24 and 26 keep the side walls 12 and 14 in a parallel position and the hub portions 56 of this axis 20, as in the

  case of the hub portions 56 of the axis 18, help to maintain

  in the closed position of the side walls 12 and 14.

  As we can see more particularly

  in Figures 5 and 6, the cutting disc 22 is pre-

  ference spaced equidistant from the internal surfaces of the side walls 12 and 14 and from the discs. sharp 24 and 26, each of these

  being arranged laterally with respect to this disc

  pant 22, so as to obtain the operating positions

  illustrated by Figures 1 to 3. -

  Looking again at Figure 6, the pat-

  your assistants 42, 44 and 46 can, if desired,

  be press-fit type to help maintain

  keep parts of the rotary knife 10 in their posi-

tion assembled.

  It will be understood that, although the preferred material

  re construction for the rotary pastry knife is a high density polymeric material, such as polyethylene, we can also use as effectively, other synthetic polymers. In addition, although only one particular embodiment has

  was considered for the purposes of illustration, we understand

  will take that modifications and variants remaining within the scope of the invention may be envisaged by specialists in this field. In this respect,

  it will be understood that the cutting discs can be of different

  different sizes and can be rotatably mounted on their respective axes if such a construction is appropriate. In addition, the discs may be a little more planar in appearance than that illustrated, provided that it ends with a sufficiently sharp peripheral edge and is rigid enough to cut a "plastic" material, that is to say flexible,

  for which the device according to the invention is

  face. Finally, it will be noted that another advantage of the rotary knife 10 according to the invention lies in the fact that the spacing in the longitudinal direction of the axes

  18 and 20 in the same common plan, jointly with the utility

  cutting discs with diameters generally

  equal and offset from each other, and the linear degree of con-

  tact cutting discs with the plastic to be cut *, such as a pastry dough, allow

  the user, for example in the case of the use of the

  according to Figure 1, to cut strips or ban-

  narrow doughs which can be curved.

Claims (10)

  1. Rotary knife, characterized in that it   comprises a body comprising means for mounting   at least three cutting discs so that   see selectively put one or more discs in contact with a sheet of material to be cut, these knives being mounted for rotation in planes perpendicular to at least two parallel axes, spaced apart in longitudinal direction, one of these discs being mounted at rotation in a plane perpendicular to an axis, while the other two among the minimum number of three sm t discs mounted for rotation in planes perpendicular to a   second axis, each of these two other disks being dis-   placed laterally and away from either side of the plane of rotation of the first disc, the selective contact of the discs with the material to be cut making it possible to slice   the material, or cut it into a strip or relative strip   broadly wide or in relatively narrow strips or bands   your. 2. Rotary knife according to claim 1, characterized in that it comprises a body comprising   means for rotary mounting of at least three devices   ques cutting, at least one of these three discs being mounted for rotation about a first axis of rotation in a plane perpendicular thereto, at least two other discs being mounted for rotation about a second axis of symmetry which is parallel to the first axis of symmetry and spaced from it in the longitudinal direction, these two other discs being offset laterally by   and on the other side of the rotation plane of the first disc.   3. Rotary pastry knife, characterized in that it comprises a body provided with means for the rotational mounting of at least two axes, two of these axes being arranged in parallel and away from one another   in the longitudinal direction, these two axes carrying a   rie of cutting discs being able to come into contact with a common surface for the cutting of this one   of these axes comprising a first disc which is per-   pendicla3xe and is fixed in one. predetermined positioh. on this axis, another of these axes comprising a second   and a third cutting disc, these discs being perpet   perpendicular to this other axis and arranged in such a way   placed thereon, the positions of this second and third rotary knife being provided laterally   on either side of the first rotary knife mentioned.   4. Rotary pastry knife according to claim 3, characterized in that the body consists of a downwardly opening element consisting of two   opposite and spaced side walls, connected between el- them by an upper wall.   5. Next rotary pastry knife   either of claims 3 and 4, characterized   in that the cutting discs are fixed relative to their respective axes.   6. Rotary pastry knife according to one   any of claims 3 to 5, characterized in that   that the means for rotationally mounting the axes comprise means making it possible to receive these axes for rotation by compared to the side walls.   7. Rotary pastry knife according to one   any of claims 3 to 6, characterized in that   that the components of this knife are made   in the form of a single molded part, the various elements of which   parts are then separated and assembled to form the Rotary knife.   8. Rotary pastry knife according to one   any of claims 3 to 7, characterized in that   that the two aforementioned axes lie in a common general plane 1.2, which is horizontal with respect to a surface of   support for the material to be cut.   9. Rotary pastry knife according to one   any of claims 3 to 8, characterized in that   that the body of this knife includes means for hand-   hold the side walls in a spaced position.   10. Rotary pastry knife according to the   claim 9, characterized in that the means pre-   seen to hold the side walls in the es-   pacé-consist of spacers forming pat-   tes, provided internally to the body of the knife, and   means formed in one piece with the axes thereof.