WO2008116236A1

WO2008116236A1 - Universal gripper, particularly for collecting slugs

Info

Publication number: WO2008116236A1
Application number: PCT/AT2008/000065
Authority: WO
Inventors: Christoph Preihs
Original assignee: Christoph Preihs
Priority date: 2007-03-27
Filing date: 2008-03-07
Publication date: 2008-10-02
Also published as: DE112008000802B4; AT504203B1; AT504203A4; DE112008000802A5

Abstract

The invention relates to a gripper for collecting items or slugs, comprising two symmetrical clamp halves (1, 2), which can be pivoted in relation to each other. Each clamp half comprises an actuating lever and a gripping lever. The gripping end is provided with concave recesses, in which a gripping pin is arranged (8). The gripping pins have a conical shape that is rounded at the top and face obliquely in the direction of the actuating levers. Between the clamp halves, a torsion spring is arranged (4), forming the joint of the pliers-like displaceable clamp halves. The angled ends of the torsion spring are attached to a clamp half each (10) and apply prestress to the pliers in the closed position. In a bore (13, 14) that extends through both clamp halves, a guiding pin (6) is fixed adjustably in the first clamp half, penetrates the second clamp half with clearance (13) and is guided by a coil spring (5), which applies pressure to the clamp halves in the closed position. The application force can be adjusted (6c). If the gripper according to the invention can be adjusted to length, the proportions A : B : C = 5 : 3.5 : 1 are advantageous.

Description

Universal clippers especially for collecting nudibranchs

description

The invention relates to a pair of pliers for collecting objects or slugs, consisting of two symmetrical clamp halves which are pivotable relative to each other. A torsion spring holds the two clamp halves together and forces the clamp halves to close to the gripper ends of the clamp (preload). A guide pin in the form of a threaded screw guarantees the pliers an exact closing at the gripper ends, so that no Ausscheren is possible. At the same time, this guide pin is screwed in the first half bracket so that it is adjustable, can be stabilized either deeper or less deep in the first half bracket. This has the consequence that the coil spring, through which the guide pin is inserted, the lower half of the second half of the clamp applied with less force with less deep screwing with less force. At the gripping ends concave recesses are provided which can take nudibles with closed forceps. Gripping pins that point diagonally in the direction of the actuating lever and are rounded at the tips, additionally guarantee a safe intake of nudibranches and prevent at the same time that they can catch on the gripper ends.

When comparing the Universal Klaubzange according to the invention with the existing and partly commercially available pliers, it should be mentioned that these pliers, although Teilkriterien., Which are required for collecting nudibranchs fulfill, but have significant shortcomings for this particular task. In various regions of Austria, private gardeners often use food tongs, barbecue tongs etc. to collect nudibranchs. This activity is predominantly exercised by older women in stooped postures, which causes a considerable burden on the spine. This observation led me to develop a pair of pliers, in which this activity in an upright posture, so spine-sparing exercise can be. Furthermore, already existing pliers have no suitable catch elements for picking up the slugs. Mc Gogy (US Pat. No. 2,711,339, June 21, 1955) developed food picking tongs does not meet the requirements of screw picking since it does not have a helical spring guide pin for adjusting the loading force, so that a independent of the handling of the user independent pressure on the gripper ends is generated. This application would make picking up the slugs a skill exercise (too little pressure - no intake possible, too much pressure - crushing or snail injury, increased slime formation, making further activity difficult). The adjustable with the guide pin loading force and attached to the gripping ends in the concave recesses gripping pins provide easy and effective handling in my invention. In the patent of Mc Gogy, the hooks are present at the ends, but a) to Spitz (injury of slugs, increased mucus secretion), b) much too massive (no complete closing of the gripper ends is possible). When the forceps according to the invention, the gripping ends can be completely closed because the gripping pins in the concave recesses leave enough room for it, so that the slugs are included in the concave recesses at the tips and are additionally held by the rounded gripping pin. When shaking off the wrench is squeezed to the operating levers (handles) and beaten with the gripper ends lightly on the edge of a designated vessel, which causes the safe removal of the worm from the pliers.

The space-saving closing on the Gripping Universal Klaubzange is also of great importance, because you can put the pliers in the closed state by chain link fence, in the bushes, etc., there, the pliers by squeezing the operating levers (handles) opens, the screw picks up; by subsequent loosening the pliers close to the gripper ends (screw is in the concave cavity) and thus the pliers together with the screw can be retrieved through the opening of the chain link fence. Therefore, the pliers of Lew (US 3937510 A) and Young (US 4312530 A) are not suitable for this activity, as for the exact overlapping of the grasping ends by the guide pin (6) is not taken care of, allowing a secure holding the slugs guaranteed.

The pliers of Bartlett and De Guise (US Patent 5,199,756 ό.April 1993) can engage in the closed state, but it is not apparent from the description and the sketches, whether the pliers in the locked state at the gripper ends the correct distance as well as the corresponding force for the activity of clinging slugs guaranteed. The tweezers from Holzhauer and Sutter (DE 3110666 Al) are designed for medical applications. In order to meet the criteria for collecting nudibranchs, these inventions would have to be increased or extended, with the increased proportions also affect the proportions of the force applied by the springs. Also, an adaptation of said patents for the activity of nudibranch picking would be summarized for the following reasons not effective: Reverse force (active compression when picking up the snails requires skill), no guide pin, no suitable gripping pins (Mc Gogy), with corresponding extension (adapted to body size) too large a distance at the gripper ends in open condition, awkwardness, too complicated in the production (Bartlett et al., Holzhauer and Sutter) and no exact overlapping on the grasping ends (Lew, Young).

The pliers of Wiggenhausen (DE 10237599 Al) and Weishaupt (DE 20216405 Ul) differ by a different opening or closing principle (similar magnified tweezers) of my invention. Although at Wiggenhausen the concave cavities of the catch elements are intended for the difficulty of slug injury (slime secretion), the collection of adult snails requires a minimum catch size, which makes it impossible to collect snails in slip noses or behind chain link fence. In addition, nude scraps can catch in the catch elements after gripping, removal could be impossible by shaking alone. At Weishaupt, the catch elements are simplified, so they do not guarantee a secure hold, as snails get caught in contact with the pliers and can slide upwards and slide off. The closing principle of the tweezer-like devices is less suitable for collecting nudibranchs, as when shaking the screws, the tongs must rather be released, which makes it difficult to shake off the screws. In my invention, the opposite principle applies: The necessary to collect the screws pressure (loading force) at the gripping ends with the concave recesses and the gripping pins can be adjusted from the outset, is therefore not dependent on manual dexterity. Also the shaking off of the snails is better off the hand, if you open the pliers by squeezing the handles and thus can hold firmly in your hand. The handling of the device by Andre (FR 2611423 Al) is just as different as the construction in comparison with my invention: a traction device through which the movable ends of the scissors are intended to be suitable both for the reception of fruit and for collecting snails. This may apply to fruit, but the slime secretion in snails is not thought here, since there is no corresponding safety gear, which should prevent the sucking of the snails. Compare the concave recesses on the gripping ends with the gripping pins in my invention. Andre's pliers, of all the above, would be most suitable for the activity of nudibranch picking, but are incomparable in construction to my invention, because the design requires much more operations and parts (more expensive to manufacture). In addition, you need for the operation of this pliers both hands, so that for the Mittragen a corresponding vessel no hand remains free.

The technical task erfmdungsgemäßer Universal Klaubzange refers to the ability to run objects or nudibles in an upright posture (spine-sparing) and safe (without special skill or practice) with one hand, without - in particular - the slugs thereby too firm pressure to hurt at the gripping ends. This should also be possible in hiding places, in bushes (where the nudibranchs often hide) or even through chain link fence. The pliers are also suitable for collecting small objects (discarded garbage) or fallen fruit, but have been specially designed to collect nudibranchs.

The invention relates to a pair of pliers for collecting objects or slugs, consisting of two symmetrical clamp halves which are pivotable relative to each other. Each clamp half has an operating lever and a gripping lever, whose gripping end is formed as a concave recess with gripping pin on. Between the clamp halves, a torsion spring is arranged, which forms the joint of the clamp-like pivotable clamp halves and whose angled ends are fastened to a respective clamp half and bias the clamp with a bias in the closed position. Between the joint and the gripping end of the pliers, a bore passing through both halves of the clamp is provided, in which a guide pin is arranged, wherein the guide pin is adjustably fixed in the first half of the bracket by means of screw thread and the second half of the bracket passes through play. On the guide pin, a coil spring is arranged, which acts on the clamp halves in the closed position, wherein the loading force by rotating the guide pin is adjustable. This principle of user-independent loading force has the advantage that it does not depend on the skill of the user, whether the night snails can be safely held by the gripping ends, without being crushed or injured until they are placed in a designated vessel. The process of Abschütteins is also better guaranteed by the fact that when you open the pliers on the gripper ends, the operating lever are pressed together on the handles, thereby the pliers can not slip the user in this process. The guide pin, which guarantees the exact overlapping on the gripper ends, is at the same time adjusting screw, provided with a slotted screw head, the slot size being such that the twisting can be accomplished with a coin. The diameter of the second half of the bracket passing through hole in the screw head facing the first two-thirds approximately the same size as the outer diameter of the smooth pin member, in the third third, it is slightly larger than the outer diameter of the screw thread, so that the thread of the guide pin this hole without significant Friction can happen. The gripping pins attached to the gripping ends in the center of the concave recesses have a conical shape rounded at the tip and point obliquely in the direction of the actuating levers. Thus, a safe lifting of the night snails is ensured without injuring the animals, which would have an increased secretion of mucus consequence, which would not affect the collecting activity by the concave recesses at the gripping ends of a mucus secretion. The inside of the operating levers is tapered towards the ends at the handle position, thereby making it possible to open the pliers further at the gripper ends than intended for the purpose of auger collection, therefore the pliers are also suitable for collecting other materials. Apart from the handle position and the concave recesses on the gripping ends, the two clamp halves have a constant, dependent on the material used, strength. It is possible for a straightforward DIY enthusiast to make this invention himself (hardwood staple halves or commercially available aluminum rods). In the case of variable length generation, the positions of the torsion spring and guide pin, combined with the helical spring, are given by the proportions A: B: C = 5: 3, 5: 1. For a in our widths average body size of 170 cm, a pliers length (without handles) with 60 cm is suitable.

Thus, an industrial production of screw tongs in different lengths is possible. Tongs according to the invention would also be used for collecting garbage, paper, plastic bottles etc. (which often has to be carried out in children's schoolyards) which would make the garbage collection more motivating for the children.

Since I have already produced pliers according to the invention (easy to manufacture) and sufficiently tested over ten years, I know about the behavior of nudibranch collecting and could also other people of the effectiveness and simplicity of handling universal Klaubzange invention to convince. Moreover, my invention has no wear and therefore an unlimited life. Eventual corrosion or slackening of the tension of the coil spring can be solved by simply replacing this spring; these springs are available in normal trade; as a torsion spring, a spring removed from a clothes doll can be used.

In the drawings, a pliers according to the invention is shown.

Show it:

Fig. 1: Pliers in closed position (side view)

Fig. 2: Pliers in open position (oblique view)

3: grasping with concave recess and gripping pin (8)

Fig. 4: Schematic representation: partial view of the two halves of the clip passing through

Bore and inserted guide pin without coil spring Fig. 5: Guide pin and coil spring Fig. 6: Partial view of the clamp halves with torsion spring (10) and guide pin with coil spring (5,6) with open forceps Fig. 7: Partial external view of the clamp halves with holes for penetration of

Guide pin Fig. 8: Seat of the torsion spring in the notches, holes for introducing the angled ends of the spring legs Fig. 9: Partial view of the guide pin and coil spring with lock nut (15).

Pliers according to the invention consist of two symmetrical clip halves (1, 2, FIG. 1). On one side are the operating lever with the handles (3), on the other the gripping levers. These are rounded at the end outside and provided inside with concave recesses, thus forming the catch element for holding the slugs, the gripping ends (7) with the gripping pins (8, Figure 3). The gripping pins (8) can be removed from the mold The gripping cone-shaped, rounded at the tips, be miterzeugt in one (plastic or aluminum) or sunk by a metal pin with about 3 mm length in the concave recesses (Fig. 3). They show, parallel to the outer edges of the clamp halves extending obliquely in the direction of the actuating lever (Fig. 3). The clamp halves are connected on the one hand by the torsion spring (4), which is mounted in notches (12, Fig.8) in the clamp halves and provides some of the pressure at the gripping ends. This bias arises from the fact that the angled ends of the torsion spring (4, Fig. 6) already in bias to a respective bracket half in designated holes (10, Fig. 8) are used. The winding of the torsion spring (4) thus also forms the joint of the pliers-like pivotable clamp halves and connects them, so that a pliers with the following closing principle arises: Pressing the operating levers on the handles (3) together, then opens the pliers to the gripper ends ( 8th). This is of particular importance, since picking up the nudibranchs with the gripping ends (8) does not depend on manual force (dexterity) but on a combination of slight preload caused by the torsion spring and an additional impinging force on the guide pin (8). 6) attached coil spring (5) is achieved. The gripping ends of the forceps are thus actively opened when pressed by pressing on the handles, passive, by reducing the pressure on the handles, closed. The handles (3, Fig. 1, Fig. 2) are chamfered on the inside to the ends (0, Fig. 1), which makes it possible to put the pliers by compressing completely into a relatively large opening at the gripping ends (Figure 2) so that it is also suitable for collecting larger items.

The guide pin (6) acts as an additional connection of the symmetrical clamp halves (1, 2), prevents tilting of the clamp halves when opening (Fig. 2) and guarantees an accurate overlapping of the pliers when closing on the gripper ends (Fig.l), thus holding the clamp halves stable to each other. This guide pin, which can also be used as an adjusting screw, prevents tilting of the clip halves by being adjustably screwed into a bore (14, FIG. 7) in the first leg (14, FIG. 6). This bore (14) is such that the guide pin is indeed anchored stable in the first half of the bracket, but can still be screwed on or off. In a variant in which the staple halves are made of hardwood, this hole is a slightly smaller radius than the diameter of the thread of the guide pin is, so a fairly strict screwing with some effort both stability and a Adjustment guaranteed. In the case of a metal or plastic variant, instead of the bore, a thread corresponding to the guide pin is to be mounted in the first clip half into which the guide pin is screwed. The guide pin passes through the second half of the clip through a precise bore (FIG. 4) (FIG. 13, FIG. 6, FIG. 7) with play, so that it is possible to move apart or move apart of the two clip halves (FIG. 4). The bore (13, FIG. 4) passing through the second half of the clamp is embodied in two different radii: viewed from the screw head of the guide pin, it is two-thirds such that the guide pin with the smooth point (6a, FIG Friction can slide back and forth; the third third of this hole is slightly larger (13a, Fig. 4), so that a small part of the thread of the guide pin (6b, Fig. 4) when closing the pliers can also engage in this hole without significant friction. This is necessary when too much urging force is generated by the coiled spring (5) disposed on the guide pin, and a reduction in this urging force is achieved by screwing the guide pin slightly out of the anchorage in the first half bracket by turning in the counterclockwise direction , In a variant in which the guide pin on the outside of the first half bracket by means of nut (15, Fig. 9) is fixed, only a uniform radius in the bore, which is in something equal to the outer diameter of the smooth pin part of the guide pin, necessary , It is important when using the pliers to pay attention to the exact pressure on the grasping ends (8): the slugs should be able to be safely picked up and held without being injured or squashed until they can be shaken off in a suitable container , This depends on the setting of the guide pin: if the pressure is too high, the distance X of the guide pin (Fig. 4) is extended by unscrewing, thus reducing the loading force of the coil spring (5). A practical solution for easy adjustment of the guide pin would be to provide the part opposite the thread with a slotted head (6c, Fig. 5) into which a small coin fits. According to the purpose you could replace the slotted head with a small wing nut. A significant advantage of tongs according to the invention is that they can be produced in various lengths to match any body size. The intention, the snail collecting in upright posture, so spine-sparing to accomplish, is thus given. Pay attention to the proportions of the sections of the clamp halves, at their locations torsion spring (4) and guide pin (6) are attached. These proportions are given by the track ratios A: B: C = 5: 3.5: 1 (Fig. 1), wherein the distance A is the total length of a staple half minus the distance of the handles (3), the distance B extends from the gripping end (8) to the guide pin (6) and the distance C the removal of guide pin (6) forms to the torsion spring (4). The universal tongs are very easy to manufacture because the halves of the clamp (1, 2,) have a constant thickness over their entire length. The points on the handles need only bevelled inside and outside supplemented by additional broadening for comfortable attacking or secure holding. The concave recesses on the gripping ends (Fig. 3) are easy to accomplish by cutting or Ausfeilen, in which the gripping pins are used. Moreover, it is irrelevant whether the clamp halves have a quadrangular or a rounded shape (FIGS. 7, 8). The diameter of the clamp halves is dependent on the material used, should be at least so strong that the pliers on the operating levers when compressed on the handles does not bend inward, but should not be too clumsy, because at an oversized length, as they For a larger person, the result would be an unwieldy weight of the forceps. In a mass production (material: plastic), the clamp halves could be produced in one piece both with the handles (3) and with the gripping ends (7) and gripping pin (8).

Materials:

The clamp halves (1, 2) are made of either hardwood, light metal (aluminum) or a plastic similar in stability to hardwood; the weight should be inversely proportional to the stability of the material. For plastic or light metal, the gripping ends are to be integrated with the gripping pin (8, Fig. 3) in the linkage, i. made of the same material in one; in hardwood design, the gripping pins (8) are made of stainless metal or a correspondingly stable plastic. In addition, in the wood version, the gripping ends with the concave recesses (8) are coated with a water-repellent, smooth, long-lasting layer, since the activity of nudibranch picking is carried out predominantly in moist grass or bushes.

Springs (4,5): Torsion spring (4) and coil spring (5) made of stainless metal. Guide pin (6) made of stainless steel (galvanized). Handholds (3): Made of softwood for timber, plastic or metal versions with clamp halves in one.

Claims

claims

1. forceps for collecting objects or slugs, consisting of two symmetrical clamp halves (1, 2) which are mutually pivotable, characterized in that each clamp half an actuating lever and a gripping lever whose gripping end is formed as a concave recess with gripping pin (8) , wherein between the clamp halves a torsion spring (4) is arranged, which forms the joint of the pliers-like pivotable clamp halves and whose angled ends are fastened to a respective clamp half (10) and act on the pliers with a bias in the closed position that between the joint and the gripping end of the pliers is provided with a bore (13) passing through both halves of the bracket, in which a guide pin (6) is arranged, wherein the guide pin is adjustably fixed in the first half of the bracket by means of screw thread (6b) and the second half of the bracket intersperses with play ( 13), and that on the Guide pin a coil spring (5) is arranged, which acts on the clamp halves in the closed position, wherein the biasing force is adjustable by rotating the guide pin,

2. Pliers according to claim 1, characterized in that the guide pin (6) at one end a Schlitzschraubenkopf (6c) and at the other end the screw thread (6b) and the intermediate pin part (6a) has a smooth surface.

3. Pliers according to claim 1 or 2, characterized in that the diameter of the second half of the bracket (1) passing through the bore (13) in the screw head facing first two thirds is approximately the same size as the outer diameter of the smooth pin member (6 a) and in the third third is slightly larger than the outer diameter of the screw thread (6b), so that the thread of the guide pin (6b) can pass this hole without significant friction.

4. Pliers according to one of claims 1 to 3, characterized in that in the center of the concave recesses mounted on the gripping ends gripping pins have a rounded at the top cone shape and obliquely in the direction of the actuating lever show (8).

5. Pliers according to one of claims 1 to 4, characterized in that the inside of the actuating lever is chamfered at the handle point to the ends (0), otherwise the two Klammerhälten, apart from the concave recesses on the gripping ends, have a constant thickness ,

6. Pliers according to one of claims 1 to 5, characterized in that the positions of the torsion spring (4) and guide pin (5, 6,) with variable length generation of the pliers by the distance proportions total length of a clip half without handle (A) for removal

, Λ from the gripping end to the guide pin (B) to the distance from the guide pin to the torsion spring (C) are formed and the ratio 5: 3.5: 1 correspond (Fig. 1).