FR2629302A2 - Improvement to a device for reducing the effort of raising earth with a spade or the like - Google Patents

Improvement to a device for reducing the effort of raising earth with a spade or the like Download PDF

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Publication number
FR2629302A2
FR2629302A2 FR8804500A FR8804500A FR2629302A2 FR 2629302 A2 FR2629302 A2 FR 2629302A2 FR 8804500 A FR8804500 A FR 8804500A FR 8804500 A FR8804500 A FR 8804500A FR 2629302 A2 FR2629302 A2 FR 2629302A2
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France
Prior art keywords
handle
arm
earth
tool
weight
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Granted
Application number
FR8804500A
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French (fr)
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FR2629302B2 (en
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JOUSSE LUC
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JOUSSE LUC
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Filing date
Publication date
Priority claimed from FR8617630A external-priority patent/FR2608000B1/en
Application filed by JOUSSE LUC filed Critical JOUSSE LUC
Priority to FR8804500A priority Critical patent/FR2629302B2/en
Publication of FR2629302A2 publication Critical patent/FR2629302A2/en
Application granted granted Critical
Publication of FR2629302B2 publication Critical patent/FR2629302B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B1/00—Hand tools
    • A01B1/02—Spades; Shovels
    • A01B1/026—Spades; Shovels with auxiliary handles for facilitating lifting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Prostheses (AREA)

Abstract

The already-existing device is essentially composed of an arm 5 and 8 articulated at one of its ends 7 with the collar 6 into which the handle 1, 2, 3 of the tool passes; which arm is inserted between the front hand and the handle in order to avoid the user bending down to grasp the handle with the front hand. The improvement consists in applying the lever principle of the first sort, in this case the beam and scales principle in which the actual tool 1, 2, 3, 4 is substantially the balance arm: The length of the balance arm for resistance 3, 4 is less than that of the balance arm for power 1, 2. Moreover, the latter is increased to a maximum. The intrinsic thrust of the rear hand for counterbalancing the weight of the earth is thus reduced to a minimum. The total weight lifted by the front hand is the sum of the weight of the tool and twice the weight of the load of earth.

Description

Description
La présente invention a pour objet le perfectionnement d'un dispositif pour réduire l'effort de souleuement de la terre avec une bêche ou analogue.Description
The present invention relates to the improvement of a device for reducing the lifting effort of the earth with a spade or the like.

Le dispositif dejà existant est composé d'un bras (planche unique, fig. unique, schématique, 5) articulé par l'une de ses extrémités, sur le mancie (1,2,3) de l'outil. Le bras et le manche sont articulés entre eux par l'intermédiaire d'un collier (6) dans lequel passe le manche. Le manche tourne librement sur luimeme, dans le collier; sans coulissement du collier sur le manche. Et le bras est articulé sur le collier autour d'un axe (7) perpendiculaire a l'axe longitudinal du manche, ou a l'un quelconque des plans de celui-ci ; plans dans lesquels rayonne le bras, entre le haut et le bas du manche.Le bras a, à son autre extrémité, une poignée (8:y qui est saisie par la main avant de T'utilisateur; duquel utilisateur il prolonge, ainsi, le bras avant jusqu'au manche ; ce qui évite de se baisser pour le soulèvement de la terre. The already existing device is composed of an arm (single board, single fig., Schematic, 5) articulated by one of its ends, on the handle (1,2,3) of the tool. The arm and the handle are hinged together by means of a collar (6) through which the handle passes. The handle turns freely on itself, in the necklace; without sliding of the collar on the handle. And the arm is articulated on the collar around an axis (7) perpendicular to the longitudinal axis of the handle, or to any one of the planes thereof; planes in which the arm radiates, between the top and bottom of the handle. The arm has, at its other end, a handle (8: y which is grasped by the hand before the user; from which user it extends, thus, the front arm up to the handle; this avoids bending down for lifting the earth.

L'invention qui falt l'objet de la présente addition a pour objet d'appliquer le principe du levier du premier genre. The invention which falt the object of this addition aims to apply the principle of the lever of the first kind.

L'outil proprement dit et le bras, articulés entre eux, forment une balance romaine dont le fléav est formé par le manche de l'outil (1,2,3) et le fer (48. L'équilibre étant obtenu par la poussée, avec la main arrière, sur la poigne du manche (1), pour contrebalancer la charge ce terre (9). The actual tool and the arm, articulated between them, form a Roman balance whose flavor is formed by the handle of the tool (1,2,3) and the iron (48. The balance being obtained by the thrust , with the back hand, on the handle of the handle (1), to counterbalance the load on this earth (9).

@@ doios intrinseque de @e suissance, c'est-a-dire de@e poussée avec e main arrière, est inversement proportiotirel å la longueur de son bras de fléau (1,2) relat'vement 7 la longueur du bras de fleau (3,4) de la résistance, c'est-à-dire de la charge de terre (9). @@ doios intrinsic of @e suissance, that is to say of @ e thrust with th rear hand, is inversely proportional to the length of its beam arm (1,2) relatively to the length of the arm of beam (3,4) of the resistance, that is to say of the earth charge (9).

Il y a donc lieu, pour réduire au maximum la poussée a exercer par la main arrière, d'allonger, au maximum, suivant les possibilitéc physiologiques de l'utilisateur, le manche de l'outil, au profit du bras de fléau de la puissance (1,2). It is therefore necessary, in order to reduce as much as possible the thrust to be exerted by the rear hand, to extend, as much as possible, according to the physiological possibilities of the user, the handle of the tool, for the benefit of the flail arm of the power (1,2).

Quant au bras de fléau de la resistance :3,4), il peut être considéré comme invariable: sa longueur doit être celle qui est nécessaire pour que, après le soulèvement de la beche avec sa charoe de terre, la terre se trouve renversée sans effort notable pour la porter au-delà de la jauge qui doit rester ouverte, effort qui serait particulièrement pénible. La position le plus ergonomique de l'utilisateur étant de se tenir obliquement, et non de face, reistipement à la jauge, l'épaule du bras avant avancée, l'épaule du bras arrière reculée, de sorte que le bras avant s'écarte du corps le plus possible latéralement et non en avant, et qu'il reste tendu, sans aucun effort de flexion. As for the flail arm of the resistance: 3,4), it can be considered invariable: its length must be that which is necessary so that, after the lifting of the beak with its charoe of earth, the earth is overturned without notable effort to carry it beyond the gauge which must remain open, an effort which would be particularly painful. The most ergonomic position of the user being to stand obliquely, and not from the front, reistipement to the gauge, the shoulder of the front arm advanced, the shoulder of the rear arm moved back, so that the front arm moves away of the body as much as possible laterally and not in front, and that it remains taut, without any bending effort.

La longueur du bras de la résistance (3,4) étant ainsi fixée, la longueur du bras de la puissance (1,2) peut certainement lui etre supérieure; de sorte que le poids total à soulever par la main avant, par l'intermédiaire du bras (5) avec sa poignée (8) est toujours, hormis le poids de l'outil, du double du poids intrinsèque de la résistance, quel que soit le rapport des deux bras de fleau, en faveur de celui de la puissance.  The length of the resistance arm (3,4) being thus fixed, the length of the power arm (1,2) can certainly be greater; so that the total weight to be lifted by the front hand, via the arm (5) with its handle (8) is always, apart from the weight of the tool, double the intrinsic weight of the resistance, whatever or the ratio of the two flail arms, in favor of that of power.

A ce poids totai de la résistance et ce la puissance, @ a@@ bien entendu, celui ce l'outil qu 11 convient cond d'aiégen au maximum. At this total weight of the resistance and that of the power, of course, that of the tool that is suitable for air conditioning at maximum.

Pour que la poussée qui doit être exercée par la main arriere soit reluite au maximum, il convie t cl ne donner a bras de la résistance (2,4) que la longueur (définie ci-dessus) qui est strictement nécessaire, la longueur nécessaire et suffisante.  In order for the thrust which must be exerted by the rear hand to be reduced as much as possible, it is advisable to give resistance (2,4) to arms only the length (defined above) which is strictly necessary, the necessary length and sufficient.

Claims (1)

Revendication unique Single claim Dispositif pour réduire l'effort de soulèvement de la terre avec une bêche ou analogue, selon l'une quelconque des revend;cations du brevet principal et de la première addition, caractérisé par l'application du principe de la balance romaine, levier du premier genre, Device for reducing the lifting effort of the earth with a spade or the like, according to any one of the resells; cations of the main patent and of the first addition, characterized by the application of the principle of the Roman balance, lever of the first kind, Dont le fléau est l'outil proprement dit, manche (,2,3) et fer (4), Whose flail is the tool proper, handle (, 2,3) and iron (4), Le bras de fléau de la puissance : la partie haute du manche (1,2), The scourge arm of power: the upper part of the handle (1,2), La puissance : la poussée exercee par la main arrière sur la poignée du manche (1), Power: the thrust exerted by the rear hand on the handle of the handle (1), Le bras de fléau de la résistance : la partie basse du manche (3) et le fer (4), The scourge arm of the resistance: the lower part of the handle (3) and the iron (4), La résistance : la charge de terre (8), Resistance: earth charge (8), Et le point d'appui : l'articulation (7) du bras (5) sur le collier (é).  And the fulcrum: the articulation (7) of the arm (5) on the collar (é).
FR8804500A 1986-12-15 1988-04-01 IMPROVEMENT OF A DEVICE FOR REDUCING THE LIFTING LIFE OF THE EARTH WITH A SPADE OR THE LIKE Expired - Lifetime FR2629302B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8804500A FR2629302B2 (en) 1986-12-15 1988-04-01 IMPROVEMENT OF A DEVICE FOR REDUCING THE LIFTING LIFE OF THE EARTH WITH A SPADE OR THE LIKE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8617630A FR2608000B1 (en) 1986-12-15 1986-12-15 IMPROVEMENT OF A DEVICE FOR REDUCING THE LIFTING LIFE OF THE EARTH WITH A SPADE OR THE LIKE
FR8804500A FR2629302B2 (en) 1986-12-15 1988-04-01 IMPROVEMENT OF A DEVICE FOR REDUCING THE LIFTING LIFE OF THE EARTH WITH A SPADE OR THE LIKE

Publications (2)

Publication Number Publication Date
FR2629302A2 true FR2629302A2 (en) 1989-10-06
FR2629302B2 FR2629302B2 (en) 1991-06-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8804500A Expired - Lifetime FR2629302B2 (en) 1986-12-15 1988-04-01 IMPROVEMENT OF A DEVICE FOR REDUCING THE LIFTING LIFE OF THE EARTH WITH A SPADE OR THE LIKE

Country Status (1)

Country Link
FR (1) FR2629302B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR948860A (en) * 1947-06-23 1949-08-12 Hand spade, shovel, or similar tool with auxiliary handle
FR973976A (en) * 1948-09-07 1951-02-16 spade and spade fork equipment
FR1109731A (en) * 1954-10-12 1956-02-01 Device adapting to a spade to facilitate its use
GB915288A (en) * 1958-10-21 1963-01-09 William John Page Attachment for spades, forks or other horticultural hand tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR948860A (en) * 1947-06-23 1949-08-12 Hand spade, shovel, or similar tool with auxiliary handle
FR973976A (en) * 1948-09-07 1951-02-16 spade and spade fork equipment
FR1109731A (en) * 1954-10-12 1956-02-01 Device adapting to a spade to facilitate its use
GB915288A (en) * 1958-10-21 1963-01-09 William John Page Attachment for spades, forks or other horticultural hand tools

Also Published As

Publication number Publication date
FR2629302B2 (en) 1991-06-07

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