Referring to the lower motor 24, D, is a brake shoe, or detcnt acting on a brrtkeor detcnt wheel 56, upon the shalt of the motor, and 20, is an clcctro magnet whose armature lever carries the shoe or dctcnt D. A suitable device removes the brake, and a spring or other suitable medium acting in any suitable manner, applies the brake or stop, and stops the driving mechanism and connected moving devi