DE1260715B - Juicer for citrus fruits - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

A47j

Int. Cl .:

German class: 34 b ~ *> m-

Number: 1260715

File number: B84775X / 34b

Filing date: December 1, 1965

Open date: February 8, 1968

The invention relates to a juicer intended for oranges and similar fruits, consisting of a container and a plurality of its inside protruding upwardly about an axis with spaces arranged knife organs, measured along their length between their lower and upper end, in the rest position approximately parallel to said axis, with its lower end are firmly connected to the container and whose free upper end is used for insertion into the cargo. In a known press of this type, there are knife members projecting upward from the bottom of a shell of pins arranged in one or two rings concentric with respect to the axis, which are provided with longitudinal cutting edges. Each pen has six such cutting edges, which are radial in shape arranged in different directions and therefore not suitable when introduced into an orange Od. Like. And turning the orange to cut out a slice on the orange peel. Since the If the pens are stiff, they can be squeezed from the outside when the orange or other citrus fruit is squeezed must not be bent against each other to obtain the juice.

The invention is essentially characterized in that the knife members are made of elastic Flexible blades exist, the broad sides of which in their rest position are essentially concentric around the mentioned axis, and that the blades when inserting into the citrus fruit in the lead-in area by turning the citrus fruit opposite the blades a disc-shaped part from the peel and cut a central body from the flesh of the citrus fruit around the axis and that when exercising the Pressing pressure against the surface of the citrus fruit the upper parts of the blades against their spring action are bent inwards and when the pressure is released by their spring action return to the position approximately parallel to the axis, so that the juice of the citrus fruit is pressed through the gap and past the edges of the cut-out shell part into the container got. With this pressing of the citrus fruit, carried out with one hand, the elastic Blades a movement in the direction of and from said axis so communicated to the blades exert a kind of pumping action and the juice through the crevices and at the edges of the opening in the shell is pressed past into the container. At least two blades are provided, which one have a much larger width than the gap between the blades in their rest bearing. Preferably is Citrus juicer

Applicant:

Sigurd Walter Bengtsson, Gothenburg (Sweden)

Representative:

Dipl.-Ing. H. Concept

and Dipl.-Ing. A. Wasmeier, patent attorneys,

8400 Regensburg, Lessingstr. 10

Named as inventor:

Sigurd Walter Bengtsson, Gothenburg (Sweden)

Claimed priority:

Sweden 10 December 1964 (14 909) - -

the axis around which the blades are arranged inclined at an oblique angle to the horizontal.

The invention is shown in several exemplary embodiments in the drawing.

F i g. 1 is a side view and

F i g. 2 shows a plan view of the press, the knife device according to line II-II in FIG. 1 is shown in section;

F i g. 3, 4 and 5 show a further embodiment in side view, top view and rear view;

F i g. 6 and 7 show a further embodiment in side view and top view;

F i g. Fig. 8 is a section on the line VIII-VIII of Fig. 7;

F i g. Figure 9 is a longitudinal section through the knife device and its attachment to the bottom of the container;

10 is a top plan view of the knives according to FIG Fig. 9.

According to FIG. 1 and 2 serves as a foot for the knife device or the knife set, which is designated as a whole by A , a container 10 which has the shape of a spherical dome and in the bottom of which a drain pipe 11 is provided in the middle. The knife set A protrudes upwards from the bottom of the container around the mouth of this tube. This knife set consists of a plurality of knife members 12 arranged around an axis XX common to the container 10 and the tube 11, which run in the longitudinal direction mainly parallel to this axis and, according to the exemplary embodiment provided, consist of four blades. The broad sides of these blades are essentially concentric too

809 507/26

the axis XX , and the lower ends of which are attached to the bottom of the container or; Manufactured in one piece with the container and so elastically flexible in the radial direction that they can be pressed against each other and, after being released, assume their position shown in the drawing again. Gaps 13 are provided between adjacent longitudinal edges of the blades which become narrower in the direction of the container bottom and thus the blades taper towards their free ends 14. Since the blades 12 are intended to cut relatively soft and loose material, they do not require greater sharpness. However, they are preferably provided with cutting edges at their free ends 14 as well as at the longitudinal edges 15.

When using the press, a citrus fruit, e.g. B. an orange, placed on the outermost ends 14 of the blades so that it is approximately concentric to the central axis of the fruit. Thereafter, the fruit indicated by dash-dotted line 19 in FIG. 1 is indicated, while simultaneously turning and pressing about the axis XX against the bottom of the container 10 so that the blades 12 cut a small round disc from the lower part of the peel of the orange and the free ends 14 of the blades finally until shortly lie below the upper part of the shell. The cut-out slice of the peel is pressed a small piece into the citrus fruit while rotating and pressing the citrus fruit with respect to the knife set. During this turning and pressing of the citrus fruit, the blades are repeatedly pushed inwards against each other by the periodically alternating pressure exerted by hand and outwards against each other by their spring force into the position shown in FIG. 1 position shown pressed. In doing so, the fibers of the flesh of the citrus fruit are partially cut, and the juice runs downwards and past the edges of the slice cut from the lower part of the peel. The pips of the citrus fruit are for the most part in the body of revolution, which is cut out from the center of the fruit by means of the blades 12, and the juice of this body is pressed through the gap 13 and past the cut-out peel, while at least most of the pips are because of their size cannot escape through the column. The slice of the peel cut out at the beginning of the pressing also prevents the pips and pulp from escaping through the lower part of the citrus fruit. The squeezed juice is therefore mostly free of seeds and pulp.

For pressing the shell 10 z. B. placed on a drinking glass or bottle in which the Juice is discharged through the pipe 11.

The new citrus juicer has the following advantages over previously known ones:

1. The usual knife for dividing the citrus fruit is unnecessary;

2. The juice of a whole citrus fruit can be obtained in about the same time as before half a was required to squeeze out;

3. Much purer juice is available;

4. less juice is lost;

5. The device is easy to clean as there is no difficult-to-access sieve.

The exemplary embodiment according to FIGS. 3 to 5 is based on the same principle as that according to FIGS. 1 and 2. The knife set A is here similar to the one described above. The press differs from the first embodiment in that the container 10 to which the knife set A is connected is designed differently and the axis XX of the knife set is not perpendicular, but inclined, for example, at an angle of about 45 to 60 °. The container 10 consists of an elongated bowl with a completely closed bottom and is provided with a spout 16 at one end for the juice and at the other end with a handle 17. The shell rests on a base plate 18. The method of using this embodiment is essentially the same as that of the first-mentioned embodiment.

Another embodiment of the invention is shown in FIGS. 6 to 10 shown. Here, the bottom of the container 10 is provided with a hollow, cylindrical at the bottom and a conical holder 19 for the knife set A at the upper end. The common axis X-X for this holder, which is open at its lower end and closed at its upper end, and the knife elements 12 is inclined about 60 ° with respect to the horizontal plane. The outer and inner sides of the knife blades 12 are mainly parallel with the axis XX, and their outer end parts, which form end cutting edges 14, are substantially thinner than the remainder of the blades. The blades 12 are arranged in their rest position shown in the drawing with the broad sides mainly along a cylindrical surface concentric with the axis XX. The outer surfaces of the blades are provided with one or more longitudinal beads 20 which are arcuate in cross section and which extend from the holder 19 in the direction of the end cutting edges 14 of the blades only so far that they are free therefrom. Since a plurality of beads are arranged on each blade as shown in the drawing, longitudinal grooves 21 are formed on the outer surfaces of the blades between the beads. On the inside, the blades are provided with a longitudinal, low elevation 22, from which the blades taper on both sides, so that longitudinal cutting edges 15 are formed. The elevations 22 terminate at transverse projections 25 which delimit the thinner end cutting parts 14 on the inside of the blade.

Due to the fact that the holder 19 for the blades 12 extends up to the vicinity of the height of the adjacent side edges 24 of the container, the citrus fruit impaled on the knife set A does not come with these edges and also not with the juice in the container Container 10 in contact. The introduction of the knife set into the fruit and the cutting of the above-mentioned slice from the fruit skin is facilitated by the fact that the end portions 14 of the blades are thinner than the rest of the blades and that, before the fruit is rotated relative to the knife set, the skewering is carried out at the moment by the inner transverse projection 25 of the blades is inhibited, from which the inside of the end parts 14 extends.

The press according to this embodiment is used in a manner similar to that described above. The citrus fruit is turned around the knife set A by hand while pressing it periodically. The bulges 20 provided on the outer surfaces of the blades 12 press the juice out of the fruit without tearing the pulp, so that

larger amounts of pulp parts are not torn off by this treatment and follow the juice, which is preferably through the gap 13 between the blades and the grooves 21 between the Bulges in the container 10 runs out. Also in this embodiment, the blades 12 at Pressing the fruit alternately towards each other and by the spring action of the blades pressed back into the rest position shown in the drawing. Here the blades practice a kind of Pumping action that drives the juice out of the fruit. The solid components, kernels, etc. that may be get into the container 10 with the juice, when the juice is poured out of the container retained by a coarse screening device provided below the spout 16 at the bottom of the container, which for example from a number of mutually spaced after Teeth 26 or the like protruding above.

At the rear of the container foot 18 an ao Hole 27 or the like. Be provided for attaching a handle.

Since the blades require cutting without greater sharpness for their function, they, as well as the entire press according to the various exemplary embodiments, can be cast from a plastic material. Other materials, such as stainless steel, can also be used. If necessary, the knife set A can be detachably attached to the foot as a special part, but the whole is preferably made from one piece. The number of blades in a set of knives can vary and consist of more or less than four. But at least two blades are required.

The press according to the invention is for citrus fruits in general, such as oranges, lemons, grapefruits and also intended for other juicy fruits with soft flesh.

Claims (10)

Claims: 40 1. Juicer for citrus fruits with a container and a number of its inside protruding upwards, arranged around an axis with an intermediate gap, the length of which, measured between the lower and upper end of the knife, in the rest position runs approximately parallel to said axis and which are firmly connected with their lower end to the container and whose free upper end is intended for insertion into the fruit, characterized in that the knives (12) consist of elastically flexible blades, the broad sides of which in their rest position are essentially concentric around the axis ( ZZ), and that the blades (12) when inserting into the citrus fruit in the insertion area by turning the citrus fruit opposite the blades cut a disc from the peel and a central body from the flesh of the citrus fruit around the axis and that when the pressure is exerted against the Surface of the citrus the upper parts of the blades against their featherwi rkung are bent inwards and when the pressure is released, due to the spring action, return to the position approximately parallel to the axis [XX) , so that the juice of the citrus fruit is pressed through the gap (13) and past the edges of the peel section mentioned enters the container (10). 2. Press according to claim 1, characterized in that at least two blades (12) are provided which have a substantially greater width than the width of the gap (13) between the blades in their rest position. 3. Press according to claim 2, characterized in that four blades (12) are provided. 4. Press according to one of claims 1 to 3, characterized in that the container (10) is provided with a drain pipe (11) for the squeezed juice. 5. Press according to one of claims 1 to 3, characterized in that the axis (Z-Z), around which the blades are arranged mainly concentrically, inclined at an angle to the horizontal is. 6. Press according to claim 1, characterized in that the blades (12) on their outer surfaces are provided with one or more longitudinal beads (20). 7. Press according to claim 6, characterized in that the length of the beads (20) is shorter is than that of the blades (12) and expire in front of their free, end cutting (14) forming end parts. 8. Press according to claim 7, characterized in that the free end parts of the blades (12), which end cutting edges (14) form, on the inside of the blades through transversely positioned lugs (25) are limited. 9. Press according to one of claims 1 to 3, characterized in that the blades with their lower ends with one of the container bottom approximately up to the level of the adjacent upper edge of the container upwardly protruding projection (19) are firmly connected. 10. Press according to claim 1, characterized in that the bottom of the container (10) with a sieve device, consisting of mutually spaced, upwardly protruding fixed teeth (26), which are coarser when pouring the juice from the container Hold back parts such as fruit kernels or the like. For this purpose 2 sheets of drawings 809 507/26 1.63 © Bundesdruckerei Berlin