FR2577513A1 - Directional invertor and force-reducing gear for oars - Google Patents

Abstract

This apparatus has the purpose of propelling a boat in the direction in which the rower is facing, and not backwards, like the current principle. Two of these appliances per boat are required. By pulling on the shaft 17 of the oar, the rower (oarsman) pivots a toothed sector 10 which meshes on another sector 2, and the latter drives the blade 5 of the oar. The boat thus progresses forwards. The apparatus 1 is mounted on an articulation 13 allowing the blade 5 to be taken out of the water. Furthermore, the diameter of the sector 10 is less than the sector 2, which has the advantage of reducing the force provided by the rower. By reversing (by virtue of the identical diameters of the shafts 3) the sectors 10 and 2, the speed is increased. The system is protected against corrosion and is provided with antifriction rings 7 and 14. The elements 6 and 11 protect the sectors. This invention is intended for any person using a boat with two or more oars, either for fishing, leisure or competition.

Description

DIRECTION OF DIRECTION AND

  DEMULTIPLICATEURoEFFORTS 2 5 7 7 5 13 PouiA OIRS DE E S C R I P T I 0 N t The present invention relates to a device which can be adapted to any type of boat or boat whose propultion is called "Manual" with two oars. Two of these devices must therefore be used on the same boat. One fixing on the left, the other on the right on the "gunwale" of the boat. (FigI) duf / These two devices are fixed in place of the checkers thanks to the joints D (See overall drawing I / 8)

  This present invention has a double objective.

  I) Remedy the current rowing system called "drdit" which has I0 the disadvantage of advancing backwards any type of boat. Indeed when the rower pulls on the two sleeves

  of its oars, the boat moves backwards.

  The system proposed in this invention therefore has the advantage of advancing the boat in the direction in which the rower looks, therefore forward. (Figure 2 and 3). of 5/8 [PRINCIPLE: (Since the two inverters operate at the same time, the proposed explanation concerns only one; IYTimer: (Diagram figure 4) and drawing figure '5' When the rower presses down with a force "F" on the handle D of the oar, the apparatus spivotes around the axis

and the shovel emerges from the water.

  2iTemps: drawing figure 6 "The rower pushes in front of him with a force" I F1I "the handle (47 of, 'oar.: Since it is fixed on thanks to and to & Qthe toothed sector pivots around its axis and centers in rotation reverses the toothed sector.

  move the shovel G out of the water forwards.

31Time: drawing figure "7

  The rower lifts the Q handle of the oar with force "F2".

  Qpivote support again around the axis and the shovel

Q is in the water.

Time: drawing figure 8 /

  The rower pulls the rowing handle towards him with "F3" force.

  The dentÉY- sector drives the sector (in the opposite direction and therefore causes the shovel to move (backwards); consequently the boat advances straight in front of the rower.

  first objective of this invention.

DIRECTIONAL SWITCH AND 2 5 7 751 3

DEMULTIPLICATORoFFORTS7

TO HAVE

  D E S C R I P T I 0 N / (Continued) - 'OBJECTIVE |: See overall drawing I / 8 and Figure 9 du2 / 1 2) Reduce the effort provided "F" of the rower compared to the current system. The force "F" of the rower is multiplied thanks to the diameter of the toothed sector Q which is less than the toothed diameter: Qon which it meshes. The system according to the invention is particularly intended for competition events. The speed can be changed by interchanging the toothed sectors X and X. This application

  maybe fast. Just rotate the 2 sub -

  I0 - sets (f) of I80 after removing the Xet pin Inversion of the shovels with the handles is favored thanks

  with identical diameters on the sleeves.

  In addition, depending on the circumstances of navigation or competition, another set of toothed sectors G and with a different ratio I5 may be envisaged to improve either the speed or increase the reduction ratio. This rapid change can Cre

  envisaged thanks to the elastic rings.

  In order to increase the safety at the level of the gears the system is equipped with a casing (D and a protector in

rubber.

  The system is protected against corrosion and provided with anti-friction rings tet

2 5 7 7 5 1 3

  REVERSE R o SENS [i 0 DEMULTIPLICATORo 'fFoRrs rOUR AVIRONS

Claims (7)

R E V E N D I C A T I 0 N S   1 / Direction reverser and multiplier, of efforts characterized by a direction reversal system Q and O making it possible to advance forward a boat with two articulated oars Q 2 / Device characterized according to claim 1 by a toothed sector of diameter smaller than the toothed sector on which it meshes.   3 / Apparatus according to claims 1 and 2 characterized by a   articulated support Q pivoting around an axis 0 secured to the   ticulation Q of the gunwale of the boat.   4 / Apparatus according to claim 2 characterized with regard to the fixing in translation or the interchangeability of the toothed sectors and by a rapid system   e / Apparatus according to any one of the preceding claims   characterized by two sleeves Q of identical diameter.   6 * / Apparatus according to claims 2 and 4 characterized by the   fact that the support D can accept, depending on the circumstances of navigation another set of toothed sector _ and 0 with respect to different speed.   7 / Apparatus according to any one of the preceding claims   characterized by the presence of a pin 6.   8 / Apparatus according to claims 1, 2, and 4 characterized   by Q and G safety protections   9 / Apparatus according to claim 3 and claim 1 charac-   terrified by the presence of anti-friction rings (and   10 / Apparatus according to% of your claims characterized in that   concerns the corrosion protection of all components.