Eaton Corporation

The Singer Company

George D Georgacakis

Richard C Bogda

George Obermann

John P Duve

Wilbert E Beller

Norman A Schutzkus

Michael R Furlan

The present invention provides an electro-mechanical programmer/timer having a plurality of switches actuated by a rotating program cam with each of the switches tracking a separate cam track on the cam. The program cam is indexed by a pawl which engages ratchet teeth on the program cam. The pawl is oscillated by engagement with a sub-interval cam driven by a motor drive. At least one of the switches following the program cam is a single-pole double-throw switch with the center blade thereof actuated by a cam follower lever operated by a separate track on the sub-interval cam.

Elecro-mechanical programmer/timer

An electromechanical appliance programmer has a cam drum indexed by primary advance motor drive for sequentially operating plural appliance function switches. The cam shaft is axially slidable by user actuation and moves an annular cam ring for moving a slider for actuating and de-actuating a line power switch. An internally-toothed gear is attached internally to the cam drum web and is engaged by a drive pinion of a second motor drive for effecting rapid advance of the cam drum.

Programmer/timer with rapid advance

A secondary timer mechanism for controlling a secondary program function independently of a first program function. A main timer mechanism controls the first program function and is operatively driven by a motor. A second timer mechanism can be set independently of the main timer mechanism and engages the motor through a drive gear in a first axial position and is in non-engaging relation with the drive gear in a second axial position. The second timer mechanism includes a peripheral cam surface that cooperates with a cam follower to advantageously control selective electrical connection between contact portions. The contact portions regulate the secondary program function. Pins are operatively included in the second timer mechanism for maintaining an engaged relationship with the drive gear.

Secondary timer for program timer

An electromechanical programmer assembly for controlling electrically operated appliances having a rotatable cam drum operable upon motorized advancement to actuate and deactuate plural program switches for controlling appliance functions. A user actuated shaft is rotated to select the desired cam drum position for program selection. Axial movement of the shaft causes a cam thereon to lift a slider for opening a line power switch for controlling the motorized cam drive and engaging a friction detent on the cam drum for resisting rotation of the drum and to provide a tactilely sensed position indication to the user. Axial movement of the shaft to effect dropping of the slider closes the line power switch and disengages the detent.

Electromechanical programmer assembly

A combination programmer and line switch for an appliance having a rotary program cam and a timing motor connected for advancing the cam. An upper line power contact blade is moved between high and low positions by a manual actuator. A lower contact blade is maintained stationary and is adapted for connection to certain appliance load functions. An intermediate program contact blade series connected to the timing motor has a follower biased against the program cam and is adapted for connection to all appliance functions. With the upper contact in the high position, the motor circuit is open for all positions of the program and in the low position the timing motor is energized. Alternatively, the program cam may include a line contact switch override to maintain the intermedaite blade in contact with the upper blade for both positions of the manual actuator.

Programmer/timer with combined line and program function switch

A momentary contact rocker switch utilizes a pair of torsion springs as movable switch contacts, with fixed terminal posts being used as fixed contacts. The terminal posts are grooved in the region of contact with the torsion spring to provide a wiping action. This wiping action, along with the high electrical contact forces provided by the torsion spring, eliminates the need for silver contacts.

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Skokie, IL, United States of America

George D Georgacakis