(under the class definition) Subject matter in which means are provided for controlling the operation of an electric motor in accordance with a predetermined schedule, said means comprising patterns, templates, perforated sheets, or other shaped or treated control devices having a configuration or design varying in accordance with a predetermined schedule of control to which it is desired to subject the motor. The systems included herein are "open-loop" controls and thus are not servomechanisms.
(1) Note. The operations of the motor may comprise plural, diverse motor operations or variations in a single operation such as operating the motor at a plurality of running speeds.
(2) Note. For example merely, speed control means which are actuated by a perforated sheet running at constant speed in which a sensing or detecting means contacting the sheet senses the presence of the perforations and initiates the operation of speed control means to cause the motor to operate at one speed when sensing device contacts unperformed portion of the sheet and at other speeds when contacting the perforated portions of the sheet, would be included herein.
(3) Note. For plural cams on a common shaft, each effecting a single change in electric motor control, classification is elsewhere in this class.
(4) Note. Where the system is a closed loop position servomechanism, the classification is not herein,.
SEE OR SEARCH THIS CLASS, SUBCLASS: 543+, for plural cams on a common shaft, each effecting a single change in electric motor control,
567, for where the system is a closed loop position servomechanism,
SEE OR SEARCH CLASS
29, Metal Working,
64, wherein the speed of metal working machines is controlled by pattern, templates, etc.
74, Machine Element or Mechanism,
567+, for cam means, per se.
200, Electricity: Circuit Makers and Breakers,
46, for pattern sheet controlled electric switches.
901, Robots, subcollection 3 for the programming of a robot arm.
