DK176385B1 - Stand for drying pelt animal skins has sandwich structure with front side surfaces and first and second side surfaces providing effective aeration facilities for driving of skins pressed onto it - Google Patents

Abstract

The stand (2) for drying pelt animal skins has a sandwich structure with front side surfaces and first and second side surfaces providing effective aeration facilities for drying of skins pressed on to it. The stand has a channel running in its longitudinal axis and connects with an inner hollow space (90) in a drying station (8). Dry air is blown into the hollow space which via channels in the stand is conducted against the skins pressed on to it.

Description

DK 176385 B1

The present invention relates to a device for use in the stretching and drying of skins, in particular mink and fox skins, wherein the tan is constituted by a flattened body having a first front face and a second front face having a generally tapered shape, and a first side face and a a second side surface whose width is considerably less than the width of said front face, and which one flat end, the foot end, extends perpendicular to the axial center axis of the tan, and wherein the width of the tan, after a parallel course of the first and second side surfaces exiting from the foot end, is gradually decreasing towards a tapered but rounded head end.

10

The invention further relates to a tanning unit for use with tans according to the invention.

Traditionally, fur coats made from wood, preferably spruce or pine, are used in the fur animal breeding material, the material being of a nature which permits fastening of the skin placed on the tanning in the extended state so that the skin does not contract during subsequent drying. Therefore, for retaining the skin, staples are used which are cut through the lower end of the skin and into the tan tree.

20

The term "tanning" used hereinafter is understood to mean, attaching, stretching and retaining a skin on a tane.

The term "softening" used hereinafter shall be understood to mean the removal of a dried skin stretched on a tan after the drying process for the skin is completed.

A conventional tan can be described as a flat-like piece of wood, with a first, and a second front surface, and a first and second side surfaces, the width of which is considerably less than the width of the front surfaces, and one end (foot end) of which is cut perpendicular to the longitudinal axis of the tan. , the width of which decreases gradually towards a tapered but rounded end portion (front end), wherein the tan i has a gap located symmetrically about the longitudinal axis of the tan extending between near the tapered end portion and at least over half the length of the tan.

Hantanes are distinguished for use in tanning the skins 5 derived from male animals which are usually larger than the female animals, to which huntans which are both shorter and narrower than the hantans are used. Also, the hantans comprise closest to the foot a portion where the first and second side surfaces are extending parallel, whereas the width of the huntans decreases along the entire distance between the tan foot and the tapered but rounded end portion (front end).

Common to the known tans is, as already stated, that the skins drawn on them are held extensively on these by means of staples which are cut through the skin and into the tan tree.

15

When using the tans, these are often provided with a coating of liposuction paper, for sucking up any grease on the skin side of the skins, despite the fact that the skins before the tanning are scraped for grease on the skin side.

20 In connection with the retention of the skins extensively on the tans during the drying of the skins, various possibilities have been sought in order to avoid the retention with staples, which, after drying the skins, leave holes in the skins, and it is easy to mark on them. 25 most valuable part of these, namely the back skin, where the skins are widest. In addition, the insertion of the staples, and not least the removal of them after the drying process, where the skins must be taken off the tans, is a very resource-intensive work, which constitutes a not significant part of the cost per day. produced skins.

30

In addition, it takes some practice to remove said staples without causing further damage to the skins than the holes that have already occurred during attachment and during drying. The holes from the staples are not in themselves something that causes major damage to the skins extended to the tan, but upon subsequent drying, the skin will crawl, which means that elongated holes are drawn in the skins where the staples have penetrated the skins, and the areas where the holes are located cannot be used in the subsequent processing / sewing of the skins for eg fur coats etc. 5, therefore the achievable price for skins at a fur auction depends very much on the size of said holes.

As a result of the above, various possibilities have been worked on to be able to retain the tanned skins on the tans 10 during the drying process, without using the destructive staples, and one of the options that has proved to be feasible is that after For example, in the extension of the skin on the tan in a specially designed tan machine, a holding bag extends beyond the tan-like skin, the retaining bag being pulled all the way down to the lower edge of the thigh skin, thereby locking the skin 15 on the tan. The skin will, as is the case with normally attached skins, crawl during drying, but by using the special tanning machine to extend the skins to the tans, it has shown that at least the same skin sizes obtainable by using staples as retaining agents can be obtained. for the skin extended on the tan, but with the great advantage that the skins are not damaged since no adhesives are used which penetrate the skins.

However, the aforementioned new and successful method of retaining stretched mink skin on tans has been found to cause a minor disadvantage that it may be difficult to pull the dried skin off the tan. The reason for this is that the tan tree does not yield and that the skin may in some places be "dried" to the tan, as a result of the wetted protein present in the drying process has formed a kind of bonding between the skin, paper and tan.

This, combined with the shrinkage of the skin on the tan during the drying process, means that it may be difficult to remove the skin from the tans.

Said minor disadvantage is subsequently remedied a compromise solution, in that, in combination with the use of the aforementioned holding bag, a smaller number of staples attached in the lower end of the thigh skin are used, the destruction of which in the form of stretch holes will not reduce the value of the skin appreciably.

Another disadvantage of the known wood cans is that it is often difficult to obtain uniform drying of the skins during the drying process, which takes place by placing an air hose in the crevice through which dry air is blown into the cage. , which is distributed to a certain extent below the skin side of the skin, which is possible due to the presence of the tan bag whose walls are penetrated. Experience has shown that it is particularly difficult to obtain sufficient drying of the skins around the forelegs, hind legs and tail root if the drying process is viewed from a temporal perspective of how long it takes to dry the rest of the skin on the tan.

This problem has been solved by a tan as disclosed in US 4,389,795 which comprises a tan of a perforated plastic material which permits a better distribution of the air under the skin during the drying process, and also at the reduced contact surface reduces the adhesion between the tear side of the skin and the side surface of the tan. However, this tan has a massive side surface which causes a tanned skin to not dry sufficiently in the area of the skin located above the edge surface, which has the consequence that the hairs of the fur in that area tend to loosen. In addition, this type of tan does not allow the use of staples to secure the skin in an extended position, since the tan does not include elements in which staples can be attached.

25

Thus, the use of the tane disclosed in the aforementioned US patent has not found very widespread use in fur breeding.

A further disadvantage of the so commonly known and used 30 wood cans is that, after a while, they are no longer usable for picking up and retaining staples due to the presence of previous holes from the same and that such cans must therefore be discarded. Furthermore, it should be noted that placement of the tan skin in the known drying systems, where the tan is typically suspended at the nose end and the aforementioned air hose manually placed in the slot of the tan, is a very time-consuming work, the scope of which is desired from many sides to be reduced. It is thus the object of the present invention to provide a device of the kind initially provided which provides a solution to the foregoing problems. It is a further object of the invention to provide a device which allows a much faster drying of skins than the previous method for the same.

In addition, it is a further object of the invention to facilitate the work of removing the skins from the tans, and it is desirable to specify a tane whose life is considerably longer than the life of the known wood tans.

10

This object is indicated by a device comprising a tan as defined in the characterizing part of claim 1. Hereby a tane comprising a relatively open internal structure is obtained, which results in air being supplied to the duct either from the tan's foot or from the head end. will be able to distribute evenly to the hub side of a skin applied, extended and retained to the tane concerned, thereby obtaining a uniform drying of the entire skin.

A particularly preferred embodiment of the tane according to the invention is set forth in claim 2. Hereby a tane whose strength characteristics are at least 20 corresponds to the already known tans made of wood, but furthermore also a tane which is present as well as is obtained. extremely good drying facilities for a skin applied beyond the surface of the tooth, the tan providing a longitudinal and longitudinal channel structure permitting the passage of blown air from the duct structure to the inside of the skin, partly through the 25 holes in the plate-shaped blanks and partly along the side surfaces. via the channels delimited between the spaced-out wave structures and the front and back surfaces.

In order to ensure the least possible abutment between the hub side of the skin 30 and the first and second side surfaces of the tine, the spaced wavy structures, which have opposite side edges extending parallel to the outer edges of the plate members, may be completed at a distance from said outer sides of edges. As stated in claim 3. Henred, it is obtained that only the narrow side edge of the plate-shaped blanks will be in contact with I

In the case of the skin, the hub side of the skin is thereby obtained, thereby also allowing for free air flow between the skin and the outer edges of the spaced-out wave structures.

In order to obtain an effective air blow-in possibility from the tan foot and to obtain passage of the blown air from the tan foot to the tan tip, the spacing between the wavy structures may be positioned so as to extend the spacing between the rods and to form a longitudinal direction of the tan. oriented channel, the cavity of which is substantially symmetrical about the axial center axis of the tan, as defined in claim 4.

In order to enable effective retention of the tan-stretched skin by utilizing the combination of a holding / coating bag and retaining by staples attached to the lower end of the thigh side of the skin, the rods may be formed of a material as indicated. in the characterizing part of claim 5.

It has previously been stated that the plate-shaped blanks constituting the first and second front surfaces are formed with equal base surfaces. Said plate 20 also comprises the rows of through holes specified in the characterizing part of claim 2, but to ensure air diffusion will take place effectively from the cavity bounded between the plate-shaped blanks and the spaced wavy structures, the through holes 32, 44 in and the first and second front surfaces, respectively, are located as shown in the characterizing part of claims 6 and 7.

In order to obtain planar smooth surfaces of the tan according to the invention, the rods inserted in the tane slots may be formed with recesses as shown in claim 8.

In order to provide the sufficient stiffness along the first and second side surfaces of the tine, the width of the recesses on the sides of the bars facing the outer edges of the plate members may be wider than the recesses on the opposite sides of the web. the rods as set forth in the characterizing portion of claim 9.

In order to ensure effective ventilation / supply of air along the first and second side surfaces over the area where the rods are located in the tan, the rods may be completed at a distance from the outer edges of the plate-shaped blanks as indicated in the characterizing part of claim 10.

Thus, with the sandwich-constructed tane of the present invention, a tane is provided which significantly improves the ventilation / drying of the extended tine applied to the tane relative to that obtainable by the prior art, of wood or other materials, respectively. . Furthermore, a more uniform drying of the skins is achieved, since the vital side edge portions of the skins are now dried by ventilation as opposed to what is possible by the use of the traditional wooden tines.

The tan according to the invention is, of course, intended to be made in practice as a mass production, which means that today it will be possible to standardize tans with very specific targets that are not changed as may otherwise be the case with the traditionally known tans of wood. !

In addition, the tan can be designed so that only a tan size is used for tanning the skins for both male and female animals.

Without renouncing the use of other types of materials, or combinations of the same, it can be stated that at least part of the tan according to the invention will typically be made of plastic materials. Thus, the plate-shaped blanks constituting the first and second front surfaces, respectively, may be made of plastic material, but it is not excluded that other material types can be used for the manufacture of the plate-shaped blanks.

30 j

Further, the spaced-out wave structures may advantageously also be constructed in a 1 in plastic material. In this connection, it may be stated that it is preferable, without giving up other types of material, to carry out said plate-shaped items of polyurethane plastic, since this material allows for bonding. Furthermore, said polyurethane material is a non-fat absorbent material, which means that the tan according to the invention is easier to clean after use than the traditionally used wood tan. Furthermore, the skin will be easier to remove from the tan as the smooth plastic surface will release more easily. Furthermore, the tan according to the invention has a more durable tan, which fully takes into account the strength properties obtainable by the use of wood tans, but where the tan has a longer life.

The rods used in the tan according to the invention are made of a material suitable for picking / retrieving and retaining staples. Without renouncing other material choices, it can be stated that said sticks can advantageously be made of wood. Furthermore, said rods may be so built into the tan that they are interchangeable, which will further contribute to an increase in tan life. The use of the rods 15 also results in a very uniform positioning of the staples used as supplementary retaining elements in connection with the retention of the skin on the tan in an extended position. Hereby, it will be easy afterwards to cut the part of the thigh skin which has been damaged by stretching holes regarding the aforementioned staples.

Thus, in the foregoing, one half of a device for use in extending and drying skins according to the invention is indicated in the form of a tan comprising effectively located vent ducts, both on the surfaces and along the first and second side surfaces, that is along with the rim of the j 25 tane. The tan thus comprises a longitudinally oriented inlet of the tan which communicates with the area around the first and second side surfaces as well as the first and second front surfaces. In the following, the second half of the device according to the invention is thus stated. As will become apparent from the following, an effective and quick-acting drying of the skins applied to the above-described tans will thus be achieved.

In order to obtain the effective and rapid drying of skins applied to said tans, it is stated that the desiccants are constituted by a drying station as in the characterizing part of claim 11. Thus, at the drying station, a console-like drying box with a triple top surface plate, said first and second top plate comprising guide slots whose dimensions match the geometry of said lower ends of said tan supported on a support plate located beneath said top plate comprising a plurality of slit-shaped openings smaller than the slits in said openings in the first and second top plate. Said openings are in communication with the cavity of the box-shaped body, in which it communicates with a blower / suction unit via a duct connection. Hereby the very great advantage 10 is obtained of the fact that the work of correct placement of air hoses in the slots in the prior art tans is unnecessary, since the tans with the applied, extended and fastened skins are simply inserted into the slots in the first and second top plate of the drying station, so that the tan foot is supported on the support plate. The mutual positioning of the slit-shaped openings in the first and second topsheets and the hole in the support plate causes the hole in the support plate to be located just above that of the tan in placing the tan in the slots.

longitudinal axis oriented longitudinal channel. Hereby it is obtained that air which you

is injected into the cavity of the box-shaped body, is distributed through the holes in the support plate and further through the channel structure of the tan and through the holes 20 in the first and second front plates and out into the cavity between the wave structure and the applied sides of the first and second front surfaces to the edge region of the tan. , where the air can flow freely along the inside of the skin along the first and second side surfaces of the tan.

25 Since the drying station is expected to comprise even a significant number

slit-shaped openings for placing said tans and the fact that the drying station can hardly be expected to be filled with tans drawn on stretched retained skins, it would be inappropriate that said openings in the support plate merely remain open during the blowing of dry air 30 into the box-shaped body cavity. . In order to ensure efficient utilization of the blown air, so that only air is blown through the openings in the support plate, where it is certain that a hole with a tucked-up skin is provided above, the support plate may comprise shut-off parts as is The characterizing part of claim 12. I

Claims 13 and 14 disclose particular preferred embodiments of said locking members.

In order to provide a possibility for carrying out variable humidity drying in the drying device according to the invention, the box-shaped body may be divided into a number of sections by a number of transverse walls, the respective sections being separately connected to a blower / suction unit via a duct structure, as defined in claim 15. This provides the advantage that, for example, drying can be carried out in the respective 10 sections with different humidity and with different air pressures on the blown air.

The cavity of the box-shaped cavity may also be divided into a number of sections by a number of transverse walls, each comprising a number of through openings 15 as defined in claim 16, thereby obtaining a uniform distribution of the blown air.

In order to be able to adjust the air supply to the respective sections, or to completely shut off the air supply for part of the drying station, said through-opening of the transverse walls may be fully or partially interlocked at such an outer side of the box-shaped body operated slider or aperture plate as the is specified in claim 17.

As a rule, skins which are placed and extracted on tans have been subjected to an initial fat removal process before,

includes the skin being applied to sawdust on the hub side for grease removal. Do you know

in the drying process it cannot be avoided that part of the remaining! sawdust loosens and falls into the box-shaped body, possibly passing the support plate through its openings. In order to ensure good possibility of removing said loosened sawdust, the box-shaped body may comprise at least one openable access opening to the cavity as set forth in claim 17. This provides for the effective removal of said sawdust, e.g. by suction or simply by shaking.

In order to ensure the possibility of transporting the drying station according to the invention between an actual drying room and the place where the tanning of the skins on the tans according to the invention takes place, the box-shaped body which forms the basic structure of the drying station may be provided with legs, so that the underside of the box-shaped body is raised above the substrate as set forth in claim 19. This will enable the drying station to be easily transported from the place where the tanning of the skins takes place to an actual drying room by means of a pallet lift. .

A further preferred embodiment of the drying station according to the invention comprises that the box-shaped body is positionably mounted on wheels, preferably constituted by swivel wheels located near the corners of the box-shaped body as defined in claim 20. This provides an extremely easy transport of the drying station between the place where the tanning of the skins takes place and to the drying room, where the drying station is simply placed next to the tanning machine which extends and attaches the skins to the tans, after which the tans with the drawn out stretched skins are immediately passed directly into the drying station openings, after which the drying station is driven to the drying room and connected to a fan system. This saves the 20 traditionally used tan wagons, which have usually been used for transporting the tans between the place where the tanning takes place and the dry space where the tans are traditionally suspended.

Experiments with drying of skins on tans and using the associated drying station according to the invention have shown that the drying time of skins can be reduced by 1/3 of the drying time required using the known tans and the known drying agents. thereto. Furthermore, the experiments show that the skins dried on the tans and using the associated drying station according to the invention show that the skins are uniformly dried over the entire surface, ie. also at 30 forelegs, hind legs and tail root. Thus, considerable progress has been made in the invention in reducing the drying time and the quality of the drying, and merely the reduction of the drying time allows for a considerable saving of energy for the supply of air, in connection with the drying process.

12 DK 176385 B1

The invention is further explained with reference to the drawing, in which fig. 1 shows a plurality of tans inserted in a drying station according to the invention; FIG. 2 is a perspective view of a tane according to the invention; FIG. 3 is a front view of the one shown in FIG. 2; FIG. 4 is a side view of the one shown in FIG. 2 and 3, FIG. 5 is a perspective view of a front face of the tan according to the invention; FIG. 6 is a perspective view of the position of the rods and the wave structure, respectively, in the interior of FIG. 2-4 according to the invention, fig. 7 is a detail view of an embodiment of a rod included in the 15 of FIG. 2-4 according to the invention, fig. Figure 8 is a cross-sectional view of the tan foot of a tan according to the invention; 9 is a detail perspective view of the embodiment of FIG. 2-4 at the junction between the rods and the wave structure; FIG. 10 is a perspective view of FIG. 2-4 as seen from the tan foot, FIG. 11 is a top plan view of a drying station for use with that of FIG. 2-4 according to the invention, fig. 12 is a combined layered perspective view of the one shown in FIG.

25 and 1, where the sides are removed, FIG. 13 is a perspective view of the embodiment of FIG. 1 and 11 showing a drying station according to the invention, and fig. 14 is an open perspective view showing a dry station with inserted tans according to the invention.

In FIG. 1, a perspective view of a large number of tans 6 according to the invention is inserted into a drying station 8 according to the invention for drying skin extensively and attached to said tans, using a combination of coating bags and staples.

13 DK 176385 B1 In fig. 2, which is a perspective view of a tane 6 according to the invention, it is suggested that the tane is constructed as a sandwich structure. The sandwich structure consists of two plate-shaped members 26, 28, each constituting the first 5 face surface 10 and the second face surface 12 of the tine 6.

In FIG. 5 is a perspective view of the plate-shaped blanks 26, 28. The plate-shaped blanks 26, 28 each have spaced slots 30 starting from the foot end 18. Following said spaced slots 30, in the embodiment shown 10, two substantially parallel hollow rows 32 are seen. and, at the head end 24 of the tan, two further hollow rows 34, but spaced apart from each other by the hollow rows 32. As is further apparent, the plate-shaped blanks 26, 28 comprise a hollow row 33 on the portion 35 between the spaced slots 30. The hollow row 33 extends from the the head end 24 15 facing end 37 of the slots 30 / rods 36, 38 and the hollow row terminate at a distance from the foot 18 of the tan.

The box-shaped body 70, which forms the basic structure of the drying station, further comprises legs 116, so that the bottom 76 of the box-shaped body 70 is raised above the base 118 on which the drying station is placed, thereby enabling a movable lift unit during the drying station for transporting the this. Such a transport could for example be a pallet truck. Hereby, it will be possible to effortlessly transport the drying station with inserted tans and mounted skins from the place where the tanning of the skins takes place to a suitable drying room.

In a not shown, but still particularly preferred embodiment, the box-shaped body 70 may be mounted wheelably. In this connection, it should be stated that it is preferred that the wheels be made up of swivel wheels located 30 near the corners of the box-shaped body 70. It should also be stated that it is preferred that at least two or all swivel wheels are brakeable.

In FIG. 17 in FIG. 3, which is a front view of an embodiment of a tane 6 in accordance with the present invention, it is seen that in the spacings 30, rods 36 are inserted; 38th

5 In FIG. 4 is a side sectional view of the one shown in FIG. 2, the extension is seen respectively at rods 36, 38 and, by extension, the wave structures 40, 42 extending to the head end 24 of the tan.

In FIG. 6, which is a perspective view of the location of the rods 36, 10 38 and the wave structures 40, 42 respectively, it is seen that both the rods and the wave structures are spaced by a space 52 between the wave structures 40, 42 and a space 54 between the rods 36, 38. Furthermore, it is seen that the spacings 54, 52 are located in extension of each other and as indicated in FIG. 1, 8 and in particular in FIG. 9, forming the rods i

15, 36, and the wave structures 40, 42 at their spacings 54, 52 of compound I

with the plate-shaped blanks 26, 28, when assembled into a sandwich structure, as shown in FIG. 7, 9 and 10, a longitudinally oriented channel 55 extending from the tan foot 18 to the main end of the tan 24. Said channel 55 is symmetrically located about the central axis 20 of the tan, cf. 2. The rods 36, 38 are, as shown in FIG. 7, provided with recesses along the side edges 56, 58. The recesses have a depth corresponding to the material thickness of the plate-shaped members 26, 28, and the recesses 60 (B), 60 '(C) also have different extents, namely that the recesses 60 (B) along the laterally facing side edges 25 56, 56 'of the rods 36, 38 are narrower than the width of the recesses 60' (C) on the facing edges 48, 50 of the plate-shaped blanks 26, 28 facing sides 58, 58 ' . See also FIG. 8th

Furthermore, as can be seen from FIG. 9, the through hole rows 32, 34 of the first and second face surfaces 10, 12 are positioned relative to the wave structure so that the holes 32, 34 of the plate-shaped workpieces 26, 28 are formed where the wavy structure abuts with the facing front face.

DK 176385 B1! 15 1

As shown in FIG. 10, a perspective view of a tane according to the invention viewed from below, it is seen that the side edges 58, 58 'facing the outer edges 48, 50 of the plate-shaped blanks 26, 28 are completed at a distance from said outer edges 48, 50. Furthermore, it is suggested that the 5 side-facing sides 44, 46 of the spaced-out waveguides 40, 42 are spaced apart from said outer side edges 48, 50 of the plate members 26, 28. This ensures that the air, which can be blown through the channel 55 from the foot 18 of the tine, can be distributed through the through channel and further through the defined cavity 10 between the spaced wave structures 40, 42 and out on the underside of a skin applied to the tan via the hollow structure 32, 34 and the side surfaces 14, 16 of the web 6 and distributed along it as both the wavy structure 40, 42, and the rods 36, 38 are completed at a distance from the outer edges 48, 50 of the plate members 26, 28. Thus, it is possible to carry out an efficient drying of all parts / surfaces of a skin applied to said tane.

It is preferred that the plate-shaped blanks 26, 28 are made of plastic material, preferably of polyurethane, since this material allows bonding. The wave structure 20 is also assumed to be made of a plastic material, also here preferably polyurethane.

Said plastic material here has the advantage that it easily releases the skin in connection with the removal, i.e. removal of the skin from the tan after the drying process is completed. This work is usually extremely cumbersome to perform, but may be facilitated by the tan according to the invention by a correct and appropriate choice of material which, in addition to satisfying said release function, also satisfies the strength requirements of tan in general.

The rods 36, 38 are assumed to be made of a material suitable for insertion and retention of staples. Said rods may thus advantageously be made of wood without excluding other choices of materials. Further, it is assumed that the rods 36, 38 are interchangeable in the tine so that they can be pulled backwards in connection with a replacement, but so that they are also trapped between the plate-shaped parts 26, 28.

16 DK 176385 B1

The tan according to the invention can further comprise, in a further embodiment, a transverse groove (not shown) of the outer edges 48, 50 of the plate-shaped blanks 26, 28. This also provides an aeration of the however narrow area along the first and second side surfaces of the the board.

5 In FIG. 11, 12, 13 and 14 are shown a drying station according to the invention for use with tans, as shown in FIG. 2-10, and as described above. The drying station is constituted by a hollow preferably box-shaped body 70 comprising long sides 72, end sides 74, a bottom 76 and a first 10 top surface 78. The first top surface 78 comprises a plurality of slit-shaped openings 80, the geometry of which is intended to receive a tan foot of the The present invention. Under the first top plate 78 there is at a distance from this a second top plate 82 having a corresponding number of openings 84, and below the second top plate 15 82 and at a distance therefrom there is further a support plate 86 comprising a number of slot-shaped openings 88, the illumination of which are smaller than the apertures 80, 84 in the first and second top plates, respectively. Said apertures 80, 84, 88 are generally located above one another in a vertical plane and positioned so that the channel 55 in a tine according to the invention inserted into the apertures 80, 84 20 with the foot resting on the support plate 86 will be in communication with the opening 88. Furthermore, the openings 88 are connected to the box-shaped body cavity 90 and the cavity 90 is connected via a duct connection 94 to a blower / suction unit 96, cf. 11th

In FIG. 12, which is a low perspective view of the drying station according to the invention, with the sides removed, the included parts are respectively seen in the second top plate 82 with the slots 84 and the support plate 86 with the smaller slit-shaped openings 88 covered with leaf springs 100, the first end of which is 102 by fasteners 104 are secured to the underside 106 of the support plate 86. Said plate side 100 comprises near the opposite end 105 an upright pin 110 which, as seen in FIG. 12, protrudes through a hole 107 in the support plate 86 in the mounted position of the leaf springs. Thus, by using the leaf springs 100 as a blocking means for the openings 88 in the support plate 86, an openable valve-like passage is established between the drying station cavity 90 and the channel 55 in tans 6 according to the invention inserted in the slots 80, 84 and with the tan foot in contact with the upper side of the support plate 86, whereby the undersides of one of the rods 36, 38 at the tine foot 18 press the pins 110, thereby deflecting the leaf spring 100 away from the opening 88, thereby creating free passage between the cavity 90 in the drying station and the channel 55 in the tan. It is hereby given that blown air into the cavity 90 via the duct 94 of the blower unit 96 will be distributed through the openings 88 over which a teat 6 according to the invention, as indicated in FIG. 6, and as can be seen more clearly in FIG. 14th

10 In FIG. 14 also shows the mutual positioning of the first top plate 78 and the second top plate 82 as well as the support plate 86 with corresponding slit-shaped openings 80, 84, 88.

The advantage of using the leaf springs is that, in a simple and straightforward manner, efficient utilization of the air is injected into the cavity 90, since the blown air is distributed only through the openings 88 of the support plate 86 which are open by the action of the pin 110 at the weight of a tine 6 according to the invention with tightly fastened skin. That is, the slots / openings in which no tane 6 is disposed will remain closed and thus the blown air in cavity 90 will distribute solely to the ducts 55 of the tans located in the drying station.

The use of the drying station is even extremely simple and greatly simplifies the work of the drying procedure over the known method using wood tan. Next, attaching an extended skin to a skin according to the invention, the tine 6 is positioned with the foot 18 leading forward through the slot-shaped openings 80, 84 of the first top plate 78 and the top plate 82, respectively, so that the tan foot 18 presses the upright pin 110 onto the plate spring, whereby the plate spring bends backwards 30 from the underside 106 of the support plate 186, thereby establishing free connection between the cavity and the duct of the tan, through which air blown into the cavity can pass through the duct and further along the underside of the tanned skin which it is stated in the foregoing. After the completion of the drying process, the tans are simply lifted out of the slots of the drying station and taken to drying.

19 DK 176385 B1

POSITION LIST

4. Skin 6. Tane 5 8. Drying station 10. First face of tane 6 12. Second front face of tane 6 14, First side face of tane 16. Second side face of tane 10 18. Feeding of tane 20. The axial center axis of tane 22. Parallel course of first and second side surfaces 14, 16 24. Rounded head end 26. Plate member 15 28. Plate member 30. Spaced slots starting from the foot end 18 32. Row of through holes in the plate members 26, 28 33. Row of through holes in the plate-shaped blanks 26, 28 between the slots 30 20 34. Row of through-holes in the plate-shaped blanks 26, 28 36. Rod inserted in spaced slots 30 37. Towards the head end 34 facing end of rods 36, 38 38. Rod received in spaced slots 30 40. Wave Structure 25 42. Wave Structure 44. Side Edge of Wave Structure 40 46. Side Edge of Wave Structure 42 48. Exterior Edge of Plate Item 10 50. Exterior Edge of Plate Item 12 30 52. Spacing between Wave Structure 40, 42 54. Spacing ng between rods 36, 38 55. Channel 56. Side edge of rods 36, 38 20 DK 176385 B1 58. Side edge of rods 36.3 8 60, 60 'Recesses B - width of recess 60, C - width of recess 60' 70 Box-shaped body 72. Long side of box-shaped body 70 5 74. End side of box-shaped body 70 76. Bottom of box-shaped body 70 78. First top plate 80. Slot-shaped openings in top plate 78 82. Second top surface 10 84. Openings in second top plate 86. Support plate 88. Slot-shaped openings in support plate 86 90. Box-shaped body cavity 94. Duct connection to cavity 90 15 96. Suction / blower unit 98. Locking members over opening 88 in support plate 86 100. Leaf springs 102. First end of leaf spring 100 104. Fasteners 20 105. Opposite end of blade side 100 106. Bottom of support plate 86 107. Holes in support plate 86 108. Upper side of support plate 86 110. Pin 25 112. Cross walls in cavities 90 114. Through openings in cross walls 112 116. Legs of the box-shaped body 70 118 Substrate 30

Claims (20)

21 DK 176385 B1 A tan (6) for use in the stretching and drying of skins (4), in particular mink and fox skins, wherein the tan (6) consists of a flattish body having a first front face (10) and a second front face (12) with a generally tapered shape, as well as a first side surface (14) and a second side surface (16), the width of which is considerably smaller than the width of said front surface (10, 12), and which one end of the flat-like body, the foot end (18), extends perpendicularly on the axial center axis (20) of the tan, and the width of the tan (6), after a parallel 10 course (22) of the first and second side surfaces (14, 16) exiting from the foot end (18), gradually decreases towards a tapered yet rounded head end (24), characterized in that the tan is constructed as a sandwich structure in which the face surfaces (10, 12) are made of spaced plate-shaped members (26, 28) and where the spacing (29) is arranged mutually spaced 15 spacers (36, 38, 40, 42) which, in association with the plate members ( 26, 28) form a channel (55) extending between the tine foot (18) and the head end (24), which channel (55) communicates with the first and second side faces (14, 16) of the tan, as well as with the first and second front faces ( 10, 12. respectively by an open structure of the spacers (40, 42) 20 closest to the head end (24) and at least a number of rows of through holes (32, 33, 34) in the plate-shaped blanks. The tane according to claim 1, characterized in that the tane is designed as a sandwich structure, wherein the front surfaces (10, 12) are formed of plate-shaped 25 elements (26, 28) with a similar base surface, each comprising spaced slots (30) starting from the foot end (18) and, by extension thereof, at least a series of through holes (32, 34) extending between said slits (30) to the head end (24), and which plate-shaped members (26, 28) are spaced at the slots, respectively. received rods (36, 38), and by extension 30 spaced-out corrugated structures (40, 42) whose reciprocating side edges (44, 46) extend parallel to the outer edges (48, 50) of the plate-shaped members (10, 12), and that the plate-shaped members (26, 28) further comprise at least a series of through-holes (33) extending at least over a portion of the plate between said slots (30). The web (6) according to claim 2, characterized in that the spaced-out wavy structures (40, 42) extending apart from each other side edges (44, 46) parallel to the outer edges (48, 50) of the plate-shaped blanks, are completed at a distance from said outer edges (48, 50). Tane (6) according to claim 2 or 3, characterized in that the spacing (52) 10 is located between the wavy structures (40, 42) in extension of the spacing (54) between the rods (36, 38). 52, 54) in association with the plate-shaped blanks (26, 28) constituting the front surfaces (10, 12.) form a longitudinally oriented channel (55), the cavity of which is substantially symmetrical about the axial center axis of the tan (20). Tane (6) according to any of claims 2-4, characterized in that the rods (36, 38) are made of a material suitable for holding and retaining staples, but preferably of wood. Tane (6) according to any one of claims 2-5, characterized in that the through holes (32, 34) in the first and second front surfaces (10, 12) are respectively displaced to one another, that these lie outside the region where the wave structures (40, 42) abut the face surface (10, 12) where the hole is located. 25 Tane (6) according to any one of claims 2-6, characterized in that the through holes (32, 34) in the first and second front surfaces (10, 12) are respectively displaced so that that the holes (32) in the first face surface (10) are located where the wave structures (40, 42) 30 are in contact with the second face surface (12) and where the holes (34) in the second face surface (12) are located where the wave structures ( 40, 42) are in contact with the first face surface (10). 23 DK 176385 B1 The tane (6) according to any one of claims 2-7, characterized in that at least part of the rods (36, 38) are parallel to the foot end (18) of the tane and the rods along the side edges (56, 58) are formed with recesses (60, 60 ') whose depth substantially corresponds to the thickness of the first and second front surfaces (10, 12), respectively. Tane (6) according to claim 8, characterized in that the width B of the recesses (60) on the opposite sides (56, 56 ') of the rods (36, 38) is preferably smaller than the width C of the recesses (60). ') on the sides (58, 58) of the rods (36, 38) facing the outer edges (48, 50) of the plate-shaped blanks (26, 28). Tane (6) according to any one of claims 2-9, characterized in that the outer edges (58, 58 ') of the rods (36, 38) are completed at a distance from the outer edges (48, 50) of the plate-shaped blanks (26, 28). Apparatus (8) for air-drying by blowing air together on a tan (6), according to any one of claims 1 to 10, extended and held in this position, leather (4), characterized in that: it is constituted by a drying station comprising a hollow, preferably box-shaped body (70) comprising long sides (72) end sides (74) a bottom (76) and a first top plate (78), said first top plate (78) comprising a plurality of slot-shaped openings (80) for receiving a tan foot (18) from a tan (6), the geometry of the openings corresponding to the geometry of the tan foot (18) and wherein at a distance below the first top plate (78) a second top plate (82) is provided. ) having a plurality of apertures (84) corresponding to the apertures (80) of the first top plate (78), and below the second top plate (82) a support plate (86) comprising a plurality of slit-shaped apertures (88) with a smaller aperture than the apertures (80, 84) in the first and second top plates, 30 and where mentioned nth apertures (80, 84, 88) are generally located above each other and the channel (55) in a tane (6) inserted into the apertures (80, 84) resting on the support plate (86) communicates with the aperture (88) and wherein the openings 88 are connected to the box-shaped body cavity (90), and wherein the cavity (90) communicates in a known manner via a duct connection (94) to a suction / blow unit (96). Device according to claim 11, characterized in that the openings (88) in the supporting plate (86) comprise locking parts (98) which cover the opening (88) by removing a tine (6) arranged over an opening (88). the shut-off portions (98) correspondingly being opened by placing a tane (6) on the support plate (86). Device according to claim 12, characterized in that the locking parts (98) are formed by leaf springs (100), the first end (102) of which is secured to the underside (106) of the supporting plate (86) by means of fastening means (104) and which leaf springs (100) ) near the opposite end (105) includes a through hole (107) in the support plate (86) and up over the top (108) of this upright pin (110). 15 Device according to claim 13, characterized in that the side of the leaf springs (100) facing the underside (106) of the support plate (86) comprises a resilient sealing material. Device according to any one of claims 11-14, characterized in that the cavity (90) of the box-shaped body (70) can be divided into a number of sections by a plurality of transverse walls (112), the respective sections being separately connected to a blow / suction unit via a duct structure. Device according to any of claims 11-14, characterized in that the cavity (90) of the box-shaped body (70) can be divided into a number of sections by a number of transverse walls (112) each comprising a number of through openings (114). Device according to claim 15, characterized in that the through-openings (114) in the transverse walls (112) are fully or partially interlocked by at least one actuated damper, or aperture plate, from the outer side of the box-shaped body (70). . DK 176385 B1 Device according to any of claims 11-17, characterized in that the box-shaped body (70) comprises at least one openable access opening to its cavity (90). Device according to any of claims 11-16, characterized in that the box-shaped body (70) is provided with still life (116) so that the bottom (76) is raised above the support (118) on which the drying station is placed. Device according to any one of claims 11-16, characterized in that the box-shaped body is mounted on wheels which are preferably constituted by swivel wheels located near the corners of the box-shaped body 70.