FR2680444A1 - Hedge cutter on rails - Google Patents

Abstract

Hedge cutter which can be moved horizontally and vertically, characterised in that it includes a framework (130) which can be moved inside rails (82), these rails being supported by the rail supports (141). The squaring of the support rails takes place automatically by means of pads (102). The framework (130) supports a set of removable tooling (142).

Description

 The pruning of the shrubs that make up hedges is a long, tiring and repetitive job.

This work is, moreover, difficult for amateurs to perform and it can even be dangerous when the hedge is relatively high.

 Until recent times, professional or amateur gardeners used exclusively hand-operated shears and had to have a stepladder to trim the top of the hedge.

 In public gardens or in properties with long hedges, gardeners sometimes have walk-on platforms that allow them to work in a more comfortable position.

 In recent years, electric hedge trimmers have appeared which include an electric motor for driving in a reciprocating movement of a blade that is movable relative to a fixed blade. These devices constitute an undeniable progress but they are relatively heavy and dangerous, particularly when the user is in an unstable position, as is the case when he is at the top of a stepladder which is placed on a generally loose ground.

The invention solves the problem of hedge trimming, both at the top and on their lateral sides, using a commercial hedge trimmer which can be moved without any effort and which can work with great precision.

The rail hedge trimmer has three main components - the rails - the rail supports - the movable frame in the rails which supports a pruner
mobile hedges
FIGURES 1 TO 9: SECTIONAL VIEWS EXPLAINING THE MANUFACTURE
AND THE PLACEMENT OF THE CYLINDERS FOR
RECEIVE PARTY 98 (FIGURE 15)
Figure 1: Sectional view of a piece of PVC pipe
Figure 2: Take PVC caps ref. 103 and
and 103 A to plug the ends of the
pipes and drill square holes in the center
from each end of the plugs.

Place a square section tube rf. 104
which crosses the holes ref. 103 and 103A.

Remove the cap ref. 103A to put
cement inside cylinder 102
(approximately 1/3 of cement compared to
cylinder).

Figure 3 Cylinder ref. 102 and cement ref. 105
ready to use.

Figure 4: neutral plastic film under the cylinder
to plug the end of the pipe with
a clamp (ref. 121) for
prevent moisture.

Figure 5: Square section tube ref. 106 which is put
in place in the cement (see fig. 8) and
consolidated with a scrap leg
which is also poured into cement
ref. 107.

Figure 6: Slightly sized square section tube
lower ref. 108 which fits into the tube
ref. 106.

Figure 7: Tube 108 also has a scrap leg
ref. 107A which fits into the tube ref. 106
then the two legs ref. 107 and 107A are
joined by a link (ref. 109) which will be
cut during final adjustment.

Figure 8: The part figure 7 is placed in the cement
ref. 105 then the adjustment of the part ref. 106
is done by two scrap plates ref. 110
fixed between them by screws ref. 111.

Between these two plates is slid the piece
ref. 108.

Figure 9: We dig holes parallel to the hedge,
the whole of figure 8 is inserted there.
upgrade ref. 106, he must
there is the same distance between the top of the
room 106 and the top of room 108 when
they are ready for use (see fig. 7).

Then, thanks to the level, we will be able to adjust
part 108 using part 110.

When this operation is done, it suffices
pour cement ref. 113 to cover
Part 107.

FIGURE 10: RAILS FROM ABOVE FIGURE II: RAILS FROM FRONT
FIGURE 12: CUT TRACKS
The rails are composed of two U-shaped guides ref. 82
interconnected by scrap plates
folded at 45 in the ends ref. 83.

These plates are fixed to the guides by screws
ref. 84. For better rigidity of the rails,
just one adjustment: loosen screw 88 to
allow the rod 86 to slide in the part
87 and so ref. 85 comes to rest on the ground.

Rail collection: switch ref. 86.87 to
paralleling to the rail.

FIGURE 13: PROFILE VIEW OF THE SIZE-ISAIES MAT SUPPORT
(see the assembly fig. 19)
The ref. 48 is a tube receiving part 35
(fig. 19 and 20).

The tube ref. 48 is provided with 3 holes ref. 49 for
receive the piton ref. 36 (Fig. 19); said tube
fits in a square tube ref. 123.

The ref. 68 is the size power cable
hedges.

The ref. 60 is the power cable coming
of the handle ref. 61 (Figs. 18 and 23).

FIGURE 14 SECTIONAL VIEW OF THE GUIDE BEARINGS OF THE CONSTRUCTION
(see the whole Fig. 18)
THE VERTICAL BEARING
The axle 76 which holds the bearing 69 crosses
chassis 63A.

A spacer is located between the bearing and
the chassis to prevent the plastic part re
covering the bearing to come rub the part
ref. 63A.

The axis is tightened using the nut 79
on the tightening thread ref. 81.

 Between them is a washer ref. 80.

HORIZONTAL BEARING
The bearing ref. 70 is located inside a
square piece ref. 75. It is held by the axis
ref. 74 crossing part 75.

 The part ref. 75 is guided by guides ref. 116.

This part is also mounted on a spring ref. 73
and maintained with a nut ref. 79 which allows
flexibility and anti-blocking when moving
of the frame.

FIGURE 15: PROFILE VIEW OF THE RAIL ASSEMBLY
The crank allows by turning to move
part ref90 which blocks the rails (see
fig 21).

Part ref91 is a folded metal plate
at 45 "which is held by two springs ref. 92 for
the automatic putting on line of the rails which come
push the plate ref. 91.

Ref. 94 is a movable part used for the greenhouse
rails age. On the other hand, ref. 93 is a
fixed part (see fig. 21).

Ref. 95 is an adjustment bar allowing
to easily adjust the thickness of the hedge to
using benchmarks ref. 96. The setting is done at
using screws 97A, 97B and 97C.

The part ref. 99 must be adjusted in a place that
will be exactly the same on the other guides
ref. 98 for automatic leveling.

FIGURE 16: FRONT VIEW OF THE RAIL SUPPORT ADJUSTMENT SYSTEM
(after removing part 95 fig.15).

 There are 5 possible settings for the upgrade.

Quick settings are made using the
knurled buttons ref. 3 and 4. Parts ref. 7
and 8 can slide easily in the
parts ref. 116 and 117. Part ref. 6 can
also slide into the room ref. 5.

For finishing the upgrade settings,
there are two cranks
- a crank on the right (ref.1)
- a crank on the left (ref. 118)
each crank turns a threaded rod
(ref.9) which is guided by part ref2.

Said rod passes through a threaded hole (ref. 11),
the whole rests on a plate (ref.1O) placed
on the floor.

For the upgrade, a level bubble is
planned ref. 120.

FIGURE 17: PROFILE VIEW OF THE RAIL SUPPORT GUIDE
Figure 17 shows a part according to the model
of a claw wrench. She is composed
-a square ref. 21 and 14 which slides on
part 11A to allow adjustment in
removing axis 13.

The parts ref. lita, 18 and 19 can be
replaced according to the configuration of the places in
loosening the screws ref. 16, 17 and 20.

The part ref. 15 represents a handle, the part
ref. 22 thread and part ref. 23 a plate
Clamping.

FIGURE 18: VIEW FROM ABOVE THE BUILDING
The frame is made up of square section tubes
interconnected (ref. 63). He is also con
solidified by the handle support ref. 64.

The screws ref. 65 allow to fix the support
handle ref. 64 to tube ref. 63.

The support shown seen from above ref. 66 is
also seen in profile fig. 13.

Ref. 61 is a telescopic handle receiving
the power cable (ref. 60) (see fig. 23).

Ref. 72 shows the adjustment screws for the
telescopic handle.

Ref. 71 represents the start of size
hedges.

Just press the buttons shown
in Figures 18 and 23.

Let go for the stop which represents a safety
rite.

Ref. 67 is the socket receiving the
cable from the hedge trimmer.

FIGURE 19: FRONT VIEW OF THE UPRIGHT AND THE HEDGE TRIMMER IN ITS 24t OVERALL
Ref. 33 is a square upright used for the ele-
hedge trimmer ref. 46.

The ref. 34 is a spring used to push the
automatic adjustment blocking ball.

To put the hedge trimmer in horizontal position
the, just loosen the knob ref. 29
to put the hedge trimmer in a horizontal position,
tighten the knob ref. 29 then pull on
the cord ref. 24 to mount the
hedge trimmers at the desired height; then, using
handles 27 and 28, release the pin ref. 36
and rotate the whole
in figure 19 (see fig. 23).

Ref. 45 is a threaded plate allowing the
plate lock ref. 44. Blocking is done
using the wheel ref. 29.

 Ref. 30 is the cord tightening screw.

Ref. 31 is the centering axis of the hedge trimmer
allowing it to rotate.

 Ref. 43 is a pinion.

Ref. 26 is a toothed pulley inside
throat preventing the cord from slipping.

The ref. 42 represents the pulley axis and the pi
gnon.

The part ref. 39 blocks the pinion during
of the hedge trimmer elevation and the spring
ref. 38 keeps the hedge trimmer at
different heights only by pulling on
the cord.

 Ref. 28 is a handle.

Ref. 27 is a locking or unlocking handle
cage to allow piton ref. 36 to escape
of its housing to be able to turn the whole
from figure 19 to 90 ".

The piton is automatically replaced by
in spring ref. 41.

Ref. 39 is a ratchet used to automatically lock the pinion ref. 43.

The ref. 53A is a threaded rod for blocking the hedge trimmer on ref. 51 (fig. 20).

Ref. 54 is a blade reinforcement rod with locking plates ref. 50 of the hedge trimmer on the support ref. 51.

Ref. 53 is an adjusting screw allowing the hedge trimmer to be squared.

FIGURE 20: EVEN AS PREVIOUSLY OF PROFILE
FIGURE 21: TOP VIEW OF RAIL LAYOUT AT
JOB
The rail supports are the same as on the
figure 15.

By turning the crank ref89, the part ref.90 moves and comes to block the two rails at the same time. Repeat this operation on each rail support.

FIGURE 22: FRONT VIEW OF THE CORDELET TENSIONER SYSTEM
The pulley ref25 and its support ref.55 are only used to tension the cord thanks to the screw ref.57 and the thread ref.58.

The thread ref. 58 turns in a threaded hole in the part ref. 55.

The cord turns around the pulley ref.25 on the axis ref.56.

 The part ref. 59 comes to rest on the upright.

FIGURE 23: COMPLETE FRONT VIEW OF THE HEDGE TRIMMER
WORKING AND CUTTING HORIZONTALLY
The size on rails is characterized in that it comprises a movable frame (fig. 18) inside rails (fig. 21,23,10,11,12), these rails themselves being supported by supports -rails (fig. 15).

The rail support can undergo modifications in accordance with the layout of the premises 1) In the event of a low wall near the hedge to be trimmed, it suffices to
remove the part ref. 95 fig 15 and replace it with
the part ref.11A fig.17.

To do this, loosen the knobs 97A and 97B
fig. 15.

 Then adapt everything on the wall.

The adjustment is made by the part ref. 14 which slides
on the part ref. 11A and settles gracefully with having ref. 13.

 The blocking of the assembly is done free of charge. rf. 15.

2) If for some reason the land is not
fitted with holes
it is enough square to have removed the part ref. 95 - to slide
the "level adjustment" part ref. 6 in the two uprights
of the rail support (fig. 15 ref 5A and 5B).

Then tighten the "level adjustment" part using
knobs 4A and 4B.

 A level bubble for control is provided (see fig. 6).

On the other hand, if the hedge to be cut is high, the upright ref. 33 fig. 19 can be replaced: simply slide the whole handle assembly (ref. 42.43 ...) by loosening the screw 37 and then remove the cord tightener.

To ensure the rotation of the hedge trimmer to 45, 90 or 1800 in order to cut the top of the hedge, use the handle ref. 28 by pulling on the handle ref. 27 which releases the piton ref. 36 from its housing .

Claims (5)

1. Hedge trimmer horizontally and vertically movable  characterized in that it comprises a movable frame (130)  inside rails (82), these rails being supported by  the rail supports (141). squaring the rail support  is done automatically by studs (102). The frame (130)  supports a removable tool assembly (142). 2. Hedge trimmer according to claim 1, characterized in  that the tool assembly (142) consists of a mast (33)  engaged in the tube (35) of the frame (130), of a system  and a height adjustment system.  elements (47A, 47B or 47C).  * a spring (34) pushing the ball (32) into one of the three boxes  a tightening wheel (29),  The deworming system includes  thus, the squaring is done automatically.  The set is set to 45 ".  For a different adjustment, loosen screw 53.  heights only by pulling on the cord.  the spring (38) keeps the hedge trimmer at different  locks the pinion when the hedge trimmer is raised and  slide. The pinion (42) is fixed on the pulley (26), the pawl (39)  indented inside the throat preventing the cord from  which is wound on the pulleys (25 and 26); the pulley (26) is  The height adjustment system consists of a cord (24)  delette).  the pulley support (55) to move and thus to tension the horn  the tension of the cord is done by tightening the screw 57 (this allows  ratchet (39) and put it in the free position.  To lower the hedge trimmer (46), simply tilt the 3. Hedge trimmer according to claims 1 and 2, characterized in  that the studs (102) consist of PVC cylinders (102)  which are aligned in the ground and whose squareness is precise.  the square tube (106) is leveled by the square tube (108).  the two tubes are joined by a link.  (107).  then, it suffices to pour cement (113) on the parts (106) and  * with scrap plates (110)  * with two stakes (180), a ruler (181) and the level (160),  Level adjustment is done through  and by removing the scrap plates (110), the square tube (108).  The level is done, we must remove, cutting the links (109) 4. Hedge trimmer according to one of the preceding claims, characterized  in that the level adjustment, in the absence of studs, is ensured  as follows  Just remove the part (95) of the rail support and slide  in said support (141) a complete setting adjustment system  level (amount 6).  There are 5 possible settings for the upgrade.  quick adjustments are made using the knurled buttons (3 and 4).  (116 and 117). The part (6) can also slide in the part (5).  The parts (7 and 8) can slide easily in the parts  everything rests on a plate (10) placed on the ground.  by the part (2). Said rod passes through a threaded hole (11), the  each crank turns a threaded rod (9) which is guided  - a crank on the left (118),  - a crank on the right (1),  cranks  For finishing the upgrade settings, there are two  For leveling, a level bubble (120) is provided. 5. Hedge trimmer according to one of the preceding claims, characterized  in that the rail support (14) fits on a wall. Just remove the part (95) of the rail support (141) and slide the square tube (IIA) into the rail support. Then adapt everything on the wall. The adjustment is made by means of the part (14) which slides on the part (IIA) and is adjusted by means of the axis (13). The assembly is blocked by the handle (15).