FR2515476A1 - Garden litter debris collector based on rotary lawn-mower - uses horizontal blade driven at high speed by electric motor to form suction within enclosure to gather leaves, paper and pine needles - Google Patents

Abstract

The appts. utilises a single flat blade (2) having opposite ends bent at right angles. The blade lies horizontally, close to the ground, and is driven by a vertical shaft (6) electric motor. A conical housing (7) covers the blades and converges towards an outlet (9) through which the debris picked up by the fast-rotating blade is passed to a collecting sack carried on the handle of the machine and detachable for emptying. Various blade arrangements are practicable, and in some cases the ends of the blades may be drilled for lightness.

Description

The present invention consists of a device allowing
the collection of dead leaves, light paper or other, suitable for
table with all lawn mowers.

In known mowers, the blade with two cutting blades
is usually driven by a motor and the cut grass remains
on the floor or is vacuumed in a container called a recovery tank.

The invention which is the subject of this patent relates only to the collection of
wise from any foreign body placed on the ground, from
from the moment when its specific weight allows it to be sucked up. For
To do this, simply replace the mower knife with the special piece (I) object of the invention and the hollow cone (14) above having raised the mower from 5 to 10 centimeters from the ground, so we can easily pass the mower for example under an apple tree or fruit tree, the fallen leaves will be sucked up and driven by the rotation of the helical blade and the fruits
saved remaining on the ground.

To cause suction during rotation of the blade,
it is essential to belt (I2) the base of the housing (7) of
the mower by an elastic, rubber or other skirt (II) thus forming a suction chamber (8) during the rotation of
the non-cutting helical blade (I), dead leaves, papers
or other will fly inside the casing and will be pushed into the recovery bag (9). We can also, depending on the height of the blade from the ground, grind and push back into the
recovery (9) of said objects or fruit.

The blades of this blade have the distinction of having
several different sections, (I-2-3- FIG-I) seen in plan. We
will notice that the ends of this blade are bent at
their base (3) at right angles or inclined thus facilitating grinding,
the middle part (2) of this blade is twisted, in the shape of a police
pressure;; the central part (4) is flat comprising in its
middle a hole (5) used to fix the blade on the axis
central (6) drive (FIG-3-) The ends of the blade
helicotdale can be wider allowing to increase the effect
suction of sheets or objects located under the casing (7)
of the mower it can be used in metal or material
appropriate plastic injected, for example The Skirt (II) may
receive holes (I2t intended to allow the suction of air
and facilitate suction?. in case the mower is not
not equipped. The Skirt will be placed all around the casing, leaving the front of the mower free.

 Of course, the invention is not limited to the embodiment shown and described and to the drawings given here by way of example, schematic, non-limiting indicative and are subject to numerous variants, embodiments and applications as an industrial product. new.

 FIG- I - represents in plan view the special blade in the shape of a scroll.

 FIG - 2 - represents seen from the side the same blade showing the helicoldale of the two inverted blades (I). In (3) bent part, see FIG-6-.

 FIG-3 - represents seen in plan of bottom the casing (7) of the mower showing in (6) the blade fixed on the axis of drive of the motor, turning inside (8) of the casing. The arrows indicate the direction of rotation and the thrust (9) in the recovery bag.

 FIG. 4 - shows in elevation the casing (8) of the mower at (I2) the suction holes. In (IO) the skirt fixing belt (Il) at the base of the casing open at the front of the step.

The mower is shown here raised from the ground by about five to six centimeters.

 FIG- 5 - shows the skirtIans its length secured to the belt (IO) .In (I2) holes used for suction.

 FIG 6 shows an example at the end of the curved blade (3). In B variant of the ends (2) of the blade simply bent in (3).

 FIG- 7 - alternatively represents the end of the two larger blades (2) pierced with lightening holes (I3) and the curved part (3).

FIG. 8 - is a plan view variant from below which consists in giving the leaves a continuous giraffe direction and allows finer collection, that is to say pine needles, for example. This device consists of a hollow cone (I4) fixed above the helical blade. This hollow cone is open at its upper part to allow the passage of the drive shaft (6) at the base of which it will be fixed to the blade by tightening a nut
This assembly will be driven by the motor (I5) of the mower, see
FIG-9-.

FIG - 9 - represents, seen in section, the casing of the mower inside which the blade (I) and the cone (I4) rotate. The casing is surrounded at its base by a low shutter or skirt (II).
The invention will be clearly understood with reference to the description and to the accompanying drawings by way of example, but it may vary in shape, material, sizes, without the principle of the invention being altered. The aim is to stay within the framework of the new idea which is the subject of this present patent.

Claims (1)

 IO- Device for automatic leaf collection  dead, light papers, and especially pine needles. in  using for this any lawn mower.  characterized in that it consists of a helical blade  having at each end (3) a part folded at an angle  right for crushing leaves or other waste  turning in the mower housing. A conical body (I4)  is fixed on the blade and will aim to give the leaves  a continuous gyratory direction and thus allow for pickup  pine needles or whatever.  20- Device according to claim - I - characterized in that  it has a twisted blade, allowing to increase the depres  between the ground and the suction chamber of the mower  so that foreign bodies are sucked up, crushed  wise and pushed back into the recovery bag.  3 - Device according to claim - I - characterized in that  the outer part of the blade is twisted (2) in the shape of a he  aspiring vice.  40- Device according to claim - I -, characterized in that  the blade is twisted in its middle part, in the form of a helix  repressing.  5 - Device according to claim - I - characterized in that  the central part of the blade is flat (4) and has in its  middle a> hole (5) used to fix it on the drive shaft  of the mower.  60- Device according to claim -I- characterized in that  the blade blades can be pierced with  holes to lighten it.  7 - Device according to claim -I- characterized in that  the blade rotates in a circular casing raised from the ground and  whose casing is provided with a skirt allowing aspiration  in the chamber thus constituted while leaving the front free  of the mower.  8 - Device according to claim - I - characterized in that  the skirt is integral with a belt allowing its fixing  quick at the base of the mower's cylindrical housing, it is  open at the front of the machine (direction of travel  9 - Skirt according to claim - 8 - Characterized in that it  may be provided with holes, in order to allow the suction of air when the blade turns with its cone in the cylindrical casing (8).  I00- Device according to claim - I - characterized in that the blade is surmounted by a hollow cone (I4) fixed above the blade which it is integral during rotation and whose purpose is to give the leaves a meaning continuous roundabout and allow to pick up the pine needles.