DE1212342B - Hand grass shears - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

AOIg

German KL: 45 f- 3/06

Number:
File number:
Registration date:
Display day:

1212342
W36051III / 45f
January 25, 1964
March 10, 1966

The invention relates to a hand grass shears with a fixed knife, which with a fixed Handle is connected, and with a movable knife that of a movable Handle is pivoted via a pull rod.

In such hand grass shears, the cutting plane is generally perpendicular to that through the two Handles certain level. This results in a relatively convenient handling, if it applies to cut vertically growing parts of plants from a horizontal flat surface. Often there is, however the need to cut off obliquely growing parts of plants as short as possible, even at the edges of the lawn. This often results in difficulties in handling, especially when the Cut in hard-to-reach places, e.g. B. under bushes, hedges or near walls or other obstacles that restrict the freedom of movement of the operator are carried out target.

It is indeed with a mobile grass shears, with the one between the fixed knife and the fixed one Operating handle an extension rod is provided, known, between the fixed Knife and the lower end of the rod to arrange a pivot bearing, which such is that the cutting plane of the knife is pivotable about an axis lying coaxially to the pull rod. Through this it was possible to use the scissors to trim the edges of the lawn where the plant parts were at an angle. The use of such long-handled scissors is limited, however the long handle, which can be used comfortably in freely accessible lawn areas while standing or during allows walking, makes it difficult to guide the cutting blades in hard-to-reach places, even if the cutting plane has been swiveled into the most favorable position.

In the known grass shears with a pivotable knife arrangement, the pivot bearing was also used very expansive, which is true of the long-handled scissors in view of the necessary at this point Wheel bearing is not a major disadvantage, but is a nuisance with hand grass shears.

The aim of the invention is to create hand grass scissors in which the cutting plane of the knife is opposite the handles can be pivoted as required for convenient handling of the scissors all uses are possible and still with the size and weight of the scissors conventional hand grass shears with rigid knife attachment is not increased.

Hand grass shears

Applicant:

Wolf devices G. m. B. H., St. Wendel / Saar

According to the invention this object is achieved

ίο solved that one carrying the fixed knife Angle mounted pivotably on the face of the fixed handle part by means of a bushing which protrudes through a front opening of the handle part and the pull rod is axial leads.

The bushing has a minimum diameter due to the diameter of the pull rod, which, however, can be kept so small in any case that even with rigidly attached Knife used angles as well as the face of the fixed handle to be connected to this angle does not need to be enlarged.

According to a preferred embodiment of the invention, the bushing is on the inside

a5 edge and intermediate layer of plate washers or the like. beaded outwards. This ensures simple assembly and convenient handling, because the pivoting against the constantly acting clamping pressure of the disc springs also can be made without releasing a locking device, with additional locking notches can be provided in order to effect a determination of the pivot position at certain intervals. In addition, if necessary, clamping screws can also be provided.

In the drawing, an embodiment of the invention is shown and described below. In the drawing shows
1 shows a side view of the hand grass shears designed according to the invention,

Fig. 2 is a plan view of the scissors shown in Fig. 1,

3 shows the knife joint arrangement as a detail on a larger scale in section,

F i g. 4 shows a section along the line IV-IV according to FIG. 2 on a larger scale.

In the fixed handle part 6 is the movable Handle part 5 is pivotably mounted by means of a bolt 7 riveted on both sides in the handle part 6. By doing movable handle part 5, a tension bolt 1 is inserted into holes on both sides, which has a central threaded hole having. This is in this threaded hole

609 537/133

Claims (1)

3 4 end provided with a corresponding thread a low and even friction, without a pull rod 12 screwed in, which occurs on its other, scoring. Another advantage is that the end of the movable knife 19 is bent at an angle and that when plastic plugs are used, the opening of the movable knife 19 does not corrode and this occurs. A torsion spring 8 is provided around the pin 7. Lubrication of the scissors is not required.
winds which with one end against the handle part 5. The knives are pressed against the fixed handle in such a way and with their other end against a bar that the angle of rotation 11 bearing the fixed knife 12 is applied when the position remains the same. Handle parts, the cutting plane also vertically or in the The two handle parts are set by this spring from any inclined angle are spread apart from each other, ie in a position in which io can. For this purpose the aforementioned the scissors is open. The movement is limited to the angle of rotation 11 at which the fixed knife is fastened by means of screws 18 through an elongated hole 20 provided in the fixed knife, at the end in which the end of the pull rod 12 moves. side of the fixed handle part 6 by means of a Both handle parts are made of a plastic guide sleeve 10 attached, which by a sufficient strength made in a mold. 15 front opening of the handle part 6 protrudes The use of plastic for the manufacture and on the inner edge with the interposition of the handle parts has various advantages: Compared to plate washers 9 is beaded outwards. on The metal handles that have been used up to now are made of plastic the pleasant property of being the other through-opening through which the already gripping hand gives a warmer feeling. 20 mentioned tie rod 12 is passed. Of the In addition, plastic is corrosion-resistant, and the angle of rotation 11 is on the upright, on the handle requirement, In contrast to metal, there is no additional part 6 adjacent legs from a circular arc-surface treatment. Furthermore, there is an advantage formed and on the circumference with several locking notches. That plastic has very good storage properties, in which the free end of the spring 8 has, which particularly engages in the storage on the pin 7 25, so that the swivel joint in the respective one and has a favorable effect on the tension bolt 1. Finally set angular position locks into place. As can be seen, you can the handle parts without additional processing, the knives from the in FIG. 1 and 2 shown Get a shape well-adapted to the hand, in a position to be rotated by 90 ° on both sides, with special intermediate positions can be provided on the underside of the movable handle. the part of a corrugated profile, which the grip at 30 locking device could of course the operation of the scissors improved. also be trained in other ways, namely The fulcrum of the knife 19,20 is formed so that. can be rotated by 180 ° on both sides is borrowed by the bearing pin riveted to the fixed knife. Instead of a locking device could for 17, on which the movable knife 19 by defining the respective setting also one of one on this riveted bearing bush 16 out 35 hand-operated clamping screw provided is. At the end of the journal 17 is a thread. Under the disc springs 9 is also a provided, on which an angularly bent tumbler plate 4 is inserted with the interposition of, Compression spring 13 a cap nut 14 is screwed on. which is expediently made of spring band steel In order to avoid that the movable knife with and its free leg, as can be seen from Fig. 1, Cutting thicker material can be tilted 40 covers the underside of the handle 6. The free one or tries to evade, on the one hand the bearing leg of the tumbler spring 4 points inwards pin 17 relatively long, and it is also bent tongue on, which can be used to provided that the bearing bush 16 at its upper the scissors in the closed position, d. H. at high To lock the end of a bearing opening with such a small diameter pressed handle part 5. The order has that at this point the socket and thus 45 is made for this purpose so that the free Schen- the movable knife on the bearing pin play-free angle of the tumbler spring 4 by fingerdrack to be led. can be pressed in on the inside, whereby its one In order to ensure that the knife of a pair of scissors puts the free lower edge of this handle part in the required manner with the jumping tongue when the handle part 5 is raised before the cutting and closing process, and there must be an abutment behind 50 through the handle part 5 in the raised position the fulcrum of the knife be provided, which holds. To take the scissors into use, formed by the usual scissors only the handle part 5 needs a small piece is that a knife to be pushed out a blade to be lifted, whereupon the free leg is the one that slides on the other knife part. This runner spring 4 by its own spring force in its rest position, however, is often generated in the other knife part 55 according to Fi g. 1 returns.
Shouted, and she still has the disadvantage that the
the friction caused by them is not even is. In the case of the present design, this is a problem.
avoided that in a knife, in the case of the one shown Execution in the movable knife 19, holes 60 1. Hand grass shears with a fixed knife that are provided, in which the rivet-shaped r is connected to a fixed handle, Plug 2 are inserted, with their head on and with a movable knife, which is from a slide the other part of the knife. In the present case, the movable handle is provided with a pull rod two such wad, which swivels out of one wear, the cutting plane of the consist of solid plastic, provided and attached to the 65 knife around a coaxial to the pull rod rear rounding of the movable knife can be pivoted on the same axis, thereby gechem Radius, but with a certain angle, indicates that a is the fixed distance, arranged. These plugs create a knife (20) bearing bracket (11) on the front side of the fixed handle part (6) by means of a bushing (10) pivoted which protrudes through a front opening of the handle part (6) and the pull rod (12) axially leads. 2. Scissors according to claim 1, characterized in that the bushing (10) on the inner edge with the interposition of plate washers (9) or the like. Is beaded to the outside. 3. Scissors according to claim 1 or 2, characterized in that the fastening bracket (11) formed in the shape of an arc of a circle on the upstanding leg resting on the handle part (6) is provided with locking notches or locking holes. 4. Scissors according to claim 3, characterized in that on the circular arc-shaped circumference of the angle (11) locking notches are provided in which the forward through the handle part (6) protruding end of a torsion spring (8) spreading the handle parts apart. 5. Scissors according to claim 1, characterized in that to determine the respective setting of the angle of rotation (11) a clamping screw is provided. Considered publications:
Catalog Service Division, Wallace, USA. 1 sheet of drawings 609 537/133 3.66 © Bundesdruckerei Berlin