CH633951A5 - Device for turning over, in a reciprocating manner, spits used for cooking purposes - Google Patents

Description

The present invention relates to an alternative turning device for cooking pins. The purpose of this device is in particular to allow homogeneous cooking of skewers without manual intervention.

The skewers are generally cooked by placing them in a fixed or mobile manner in continuous rotation around their axis in front of or on (or between) one (or more) suitable heat source (s).

In the first case, they are turned over manually; in the second case, an adequate motor member imposes a continuous rotation at low speed, but the simultaneous drive of several spindles leads to complicated mechanical devices (gears, chains, etc.).

In addition, it has been found that an alternative exposure of the food on the skewer with possible intermediate stops, face by face, with respect to the heat source, leads to faster cooking than the continuous rotation.

The device according to the invention consists in providing each spindle with at least one helical element, the helix angle ß relative to the axis is less than 45 °, this element cooperating with at least one conjugate element, integral a support to give each spindle a rotational movement.

In a first variant, the support is animated by a rocking movement of angular amplitude a around a substantially horizontal axis, such as that described in French patent application No. 79.01165 of January 9, 1979. In this case, the axis of the spindle propeller is substantially perpendicular to the rocking axis.

Given the friction, the turning takes place when, with each swing, the spindle axis approaches the vertical position, under the effect of its own weight and the food it carries.

The turning angle depends on both the pitch of the propeller and the length of the longitudinal travel allowed to the spindle; this deflection can be determined either by the feeds themselves which are inserted therein, or by one or more stop members integral with the spindle or its support. The angle there is generally greater than or equal to 90 °.

The invention will be better understood from the following description of several examples of execution of the device, with reference to the appended drawing, in which:

fig. 1 shows a schematic perspective view of the device; fig. 2 and 2bis represent a section through a plane containing both the axis of rocking and the axis of the pins;

fig. 3 shows the support of the pins, in perspective;

fig. 4 shows the position of a pin on its support;

fig. 5 is a detailed view of the support zone of the spindle on the support;

fig. 6 is a perspective view of a part of the device according to a variant comprising means for limiting the lateral displacement of the spindle different from those which are shown in FIG. 4;

fig. 7, 8 and 9 illustrate another embodiment of the device according to the invention, FIG. 7 showing a perspective view of the drive system, and FIGS. 8 and 9 showing schematic longitudinal views of the same device.

Example 1:

In this first example of the invention, the support shaft 9 movable around the rocking axis 1 and carried by bearings 2 is pierced in its median part with holes 3 provided with internal threads, the angle ß = 15 °.

The swing angle a is close to 160 °, that is + 80 ° relative to the horizontal.

The pins 4 are provided in their center with a screw 5 of the same angle ß which engages in the hole 3 with gentle friction or with a slight play. Furthermore, each pin has, on either side of the screw 5, a transverse pin 6 which limits its movement along its axis 7.

The foods are represented schematically on one of the pins at 8. In the case shown in FIG. 2bis, the pins are removable.

Example 2:

Pin 4 consists of an initially rectilinear profile of non-circular cross-section and, preferably, oblong (such as square, rectangle, rhombus, oval, etc.), twisted over a certain length (helical element) and shaped like a loop - or hook - 15 at one end (spindle head) and provided with a point 16 at the other.

The support consists of a rectangular frame 10 secured to two pins 11 ensuring the rocking around an axis 1 of an angle a of 120 ° (± 60 ° relative to the horizontal).

This frame is either open or closed by a bottom 12 which acts as a drip pan; in the first case, the heat sources can be placed above and below it; in the second, the heat source is placed above.

The sides of the frame 10, parallel to the axis 1, are provided, at their upper part, with rectangular notches or openings 13 and 14 in which the pins engage transversely.

The width 1 of one of the notches, for example 13, is greater than the maximum thickness e of the profile 4, but less than the largest transverse dimension of the latter (L). In the case shown, the twist represents a rotation y of approximately 180 ° over a length of 25 mm.

Two lugs 17, located on either side of the twist, limit the longitudinal movement of the spindle along its axis 7.

The longitudinal displacement of the spindle can be limited by any other means such as that shown in FIG. 6.

In this case, the frame 10 is doubled parallel to the axis 1 of a counter-frame 21 which limits the longitudinal displacement of the pins 4 to the distances D or D 'following the shape of the head thereof.

In a second variant, the support is fixed and the pins are driven in a reciprocating longitudinal rectilinear movement using devices known per se such as crank-rod, crankshaft, etc. This movement can be transmitted to each spindle individually or to all of them simultaneously.

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Example 3:

A movable plate 31 provided with notches 33 is driven in a rectilinear reciprocating movement in a direction substantially perpendicular to its plane. The (or) pin (s) 4 is (are) provided (s) 5 with a head 35 having a groove 34 whose diameter is slightly less than the width of the notch 33; in this way,

the spindle 4 is alternately pushed and pulled through the notch 13 using a known system such as connecting rod-crank 39, which causes its alternating reversal.

In a variant of this embodiment (fig. 8), the spindle is provided with a simple head 36 and the movable plate 32 provided with the notches 33 has the general shape of a U, which also ensures the alternating longitudinal displacement of the pin 4.

5 sheets of drawings

Claims (7)

633951 1. Alternative turning device for cooking pins, characterized in that each pin is provided with at least one helical element whose helix angle (ß) relative to its axis is less than 45 ", this element cooperating with at least one conjugate element secured to a support to give each spindle a rotational movement. 2. Device according to claim 1, characterized in that it comprises means for subjecting each of the pins to an alternating rotation of an angle (y) greater than or equal to 90 °. 2 3. Device according to one of claims 1 or 2, characterized in that the support is fixed and that each spindle is alternately pushed and pulled longitudinally. 4. Device according to claim 3, characterized in that the set of pins is driven by the same longitudinal reciprocating movement. 5. Device according to one of claims 1 or 2, characterized in that the support (9,10) is driven in a rocking movement (a) around a horizontal axis (1), perpendicular to the direction of pins (4). 6. Device according to claim 5, characterized in that the pins are moved by their own weight. 7. Device according to one of claims 5 or 6, characterized in that members for limiting the travel of each of the pins are provided on the pins and / or their support.