Internal-combustion engine starter device

An internal combustion engine starter device which comprises:

• an electric starter motor;
• a voltage source;
• a first normally open switch having an input terminal and connected between said starter motor and said voltage source;
• an electrical connection mechanism for closing said first normally open switch thereby to start said electric starter motor by drawing voltage from said voltage source;
• said mechanism including a second operator actuated switch and a third normally open switch connected in series between said second switch and said first switch, said third switch having a control terminal for closing said third switch, an input terminal and an output terminal connected to said input terminal of said first switch;
• and an ignition control device connected to said voltage source and having an output terminal connected to said control terminal of said third switch, said ignition control device being so designed as to be incapable of providing sufficient voltage from its said output terminal to said third switch to maintain closure of said third switch once closure of said third switch is established if the voltage from said voltage source thereafter falls below a threshold value when said second switch is closed;
• said electrical connection mechanism further comprising an electrical connection for providing voltage from said output terminal of said third switch to said control terminal of said third switch, said electrical connection being so located that when said first, second and third switches are closed thereby to start said starter motor, the combined voltage provided to said control terminal of said third switch is sufficient to maintain the closure of said third switch when said second switch is closed.