Eaton Corporation

The Singer Company

Controls Company of America

John P Duve

Jerome C Klopp

George D Georgacakis

George A Soberski

Michael F Misik

David G Arnold

Lawrence T Olges

Allan E Visin

A programmer/timer for appliances having cam actuated switches with a cam drum advanced by a motor driven four-stage speed-reducing gear train with a missing teeth type intermittent device. The third step gear is readily interchangeable for changing the rate of cam advance. An auxiliary housing with auxiliary cam drum and switches may be added without altering the basic configuration of switches and advance mechanism.

Electromechanical programmer/timer

A bobbin or spool is molded of thermoplastic with one end flange of substantially greater diameter with a plurality of arcuately spaced voids through the flange. A coil is wound on the bobbin and a first ferromagnetic cup with integrally formed spaced finger-like plural pole segments in a circumferential array is axially received over the smaller spool flange and coil with the pole segments extending through the voids in the larger spool flange. A second ferromagnetic stator cup with finger-like spaced plural pole segments in a circumferential array is nested against the larger spool flange with the pole segments interdigitated with the pole segments on the first cup. A third stator member interconnects the first and second stator cups through the spool; and, a permanent magnet rotor is journalled on the third pole segment within the stator pole segments. The larger spool flange has electrical connectors received in slots and attached to the ends of the coil.

Miniature synchronous motor

A one-way ratcheting clutch having a primary annular driving member with a plurality of circumferentially spaced radially inwardly extending lugs and a secondary annular member mounted on a common shaft has a plurality of resilient circumferentially spaced outwardly extending fingers for engaging the lugs configured to be compression loaded. At any relative rotational position at least one, and less than half, of the fingers is in the relaxed or undeflected state to minimize the effects of permanent set where both members are formed of plastic and exposed to service temperatures up to 85.degree. C.

One-way clutch

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 A.C. motor reverser having a timed cam-driven SPDT switch with the side terminals thereof connected to separate motor stator coils. The movement of the transfer blade between contacts to break one motor coil circuit and complete the other reversing motor coil circuit is delayed sufficiently by the cam to permit the motor rotor speed to decay enought to enable reversal of rotation upon completion of the reversing coil circuit. The minimum contact transfer time is set at the period corresponding to two cycles of power line current.

Electromechanical motor reversing

An electrical coil assembly includes a bobbin having a pair of generally parallel end plates with a pair of terminals inserted into holes in an edge in one of the end plates. A wall is attached to that one of the end plates and extends radially outward therefrom, being formed with a pair of crossholes each aligned with one of the blind holes. A pair of terminals are partially inserted into the blind holes. Each of the terminals includes an elongated slot of reduced width at the end remote from the end plate. A portion of the terminal slot material is lanced out to form a tab at that remote end of the terminal. The close in ends of the terminal slots are lined up with the crossholes. Magnet wire is then wound on the bobbin hub and the two ends of the magnet wire are dressed through respective terminal tabs and then resistance welded thereto. A layer of protective tape is then applied over the surface of the wound coil. Prestripped lead wires are inserted through the crossholes of the wall and through the lower end of the terminal slots. Finally, the terminals are driven in the remainder of the blind hole depth. As a result, the reduced terminal slot widths cut into the lead wires, creating both electrical and mechanical connections.

Method of assembling an electrical coil and terminal therefor

Electrical coil assembly and terminal therefor

A delay arrangement for a program timer having a rotatable timing cam member (monoblock) including a delay ratchet wheel having a pin which engages an abutment inside the monoblock at one relative position of the delay ratchet to the monoblock. The monoblock ratchet ring has a gap at the desired delay position so that when the delay ratchet wheel is set to a desired delay, and the drive pawl is at the delay position, the drive pawl extends into the gap to only move the delay ratchet wheel until the pin engages the monoblock. The monoblock is then advanced along with the delay ratchet wheel until such time as the gap in the monoblock ratchet ring has advanced past the drive pawl. From then on, the regular monoblock advance takes over.

Program timer with variable time delay

A drive mechanism for a program timer of the type having a rotating member advanced in a step-by-step manner by a drive pawl includes a drive cam having a camming surface defining the drive stroke of the drive pawl. In order to shorten the switching time, the drive cam is intermittently rotated by an angle sufficient to drive the pawl to advance the rotating member during a single intermittent movement of the drive cam. Sub-interval switching is accomplished by the cooperation between a pivotable sub-interval switching lever and a sub-interval camming surface on the drive cam, with the lever actuated by the camming surface to control the movement of a sub-interval switch blade.

Fast impulse timer drive mechanism

An expanded interval drive mechanism for a program timer includes two ratchet rings. One of the ratchet rings is fixed to the monoblock and at certain regions thereon it is missing teeth over a portion of its width. Thus, the first ratchet ring has regions of narrow teeth. The other ratchet ring is arranged for free relative rotational movement in a first direction with respect to the monoblock. All of the teeth of the two ratchet rings have substantially the same major and minor diameters. However, the second ratchet ring is formed with at least one deep notch. In the region where the first ratchet ring has missing teeth, the toothless region is at substantially the same level as the notch. A single drive pawl extends over both ratchet rings and its driving surface is formed at a plurality of levels so that the drive pawl engages the first ratchet ring in the arc length corresponding to the toothless region only when the drive pawl engages the notch of the second ratchet ring. Otherwise, in this toothless region the drive pawl only advances the second ratchet ring, thereby providing an expanded interval.

Growing community of inventors

Brookfield, IL, United States of America

John P Duve