Lawn mower brake and starter

A lawn mower including an engine having an ignition system which is selectively conditionable between operative and inoperative conditions, a first rotatable member, an energy storage and delivery mechanism connected to said engine and comprising energy storage means, an assembly including rotatably mounted second and third members in driving engagement with each other and with one of said members of said assembly being connected to said energy storage means, said assembly being displaceable between a stop position wherein one of said second and third members is in driving engagement with said first member so as, in response to rotation of said first member, to rotate said second and third members in the direction which is effective to store energy in said storage means and a start position wherein the other of said second and third members is in driving engagement with said first member so as, in response to delivery of energy to said assembly from said storage means, to rotate said first member in the engine operating direction, releasable means movable selectively between positions engaged with and disengaged from said energy storage and delivery mechanism for permitting delivery of energy to said storage means and preventing delivery of energy from said storage means when in the engaged position and for permitting delivery of energy from said storage means when in disengaged position, means for selectively displacing said releasable means from said engaged position in response to movement of said assembly to said start position and to said engaged position in response to assembly movement from said start position, and means for selectively conditioning said ignition system in said operative condition in response to movement of said assembly to said start position, and in said inoperative condition in response to movement of said assembly from said start position.

A lawn mower including an engine having a first rotatable member, an energy storage and delivery mechanism connected to said engine and comprising energy storage means and, a lever which is pivotable about an axis fixed with respect to said engine, an assembly including second and third members mounted rotatably on said lever about respective axis located in parallel relation to and on opposite sides of said fixed axis, said second and third members being in driving engagement with each other and with one of said members of said assembly being connected to said energy storage means, said assembly being selectively displaceable about said fixed axis between a stop position wherein one of said second and third members is in driving engagement with saId first member so as, in response to rotation of said first member, to rotate said second and third members in the direction which is effective to store energy in said storage means and a start position wherein the other of said second and third members is in driving engagement with said first member so as, in response to delivery of energy to said assembly from said storage means, to rotate said first member in the engine operating direction, releasable means movable selectively between positions engaged with and disengaged from said energy storage and delivery mechanism for permitting delivery of energy to said storage means and preventing delivery of energy from said storage means when in the engaged position and for permitting delivery of energy from said storage means when in disengaged position, means for selectively displacing said releasable means from said engaged position in response to movement of said assembly to said start position and to said engaged position in response to assembly movement from said start position.

A lawn mower including an engine having a first rotatable member, an energy storage and delivery mechanism connected to said engine and comprising energy storage means, an assembly displaceable between start and stop positions and including rotatably mounted second and third members in driving engagement with each other and with one of said members of said assembly being connected to said storage means, said second rotatable member comprising a compound member including a gear which is rotatably driven by said third member and which is in driving engagement with said first rotatable member when said assembly is in said start position, whereby said first member is rotated in the engine operating direction in response to delivery of energy to said assembly from said storage means and a friction wheel which has a diameter greater than said gear and which is engageable with said first rotatable member for rotation thereby when said assembly is in said stop position, whereby said one member is rotated in the direction which is effective to store energy in said storage means in response to rotation of said first member, releasable means movable selectively between positions engaged with and disengaged from said energy storage and delivery mechanism for permitting delivery of energy to said storage means and preventing delivery of energy from said storage means when in the engaged position and for permitting delivery of energy from said storage means when in disengaged position, and means for selectively displacing said releasable means from said engaged position in response to movement of said assembly to said start position and to said engaged position in response to assembly movement from said start position.