Ramp speed integrated motor controller for sewing machines

In a sewing machine having an electrically operable drive motor, a needle bar, an arm shaft including means for connecting said needle bar to said drive motor for endwise reciprocatory stitch forming motion of said needle bar toward and away from a stitch forming location, a contact switch disposed in close proximity to said stitch forming location and having an open position and a closed position, said contact switch being moved to said closed position by hand pressure of a sewing machine operator, and control means for connecting said drive motor to a source of electrical power in response to closure of said contact switch, said control means including operator influenced means for setting an operating speed for said drive motor, the improvement comprising:

• ramp speed means interposed between said source of electrical power and said control means for gradually increasing the application of electrical power to said control means for an initial power level in response to closure of said contact switch so as to control a gradual acceleration of said drive motor to said operating speed.