US3591745A

US3591745A - Manually operated toggle acting switch having a job function lever

Info

Publication number: US3591745A
Application number: US9205A
Authority: US
Inventors: Jordan F Puetz
Original assignee: Square D Co
Current assignee: Schneider Electric USA Inc
Priority date: 1970-02-06
Filing date: 1970-02-06
Publication date: 1971-07-06
Anticipated expiration: 1988-07-06

Abstract

A manually operated switch having a toggle mechanism which applies positive pressure between the contacts of the switch during the interval the toggle levers are passing through the toggle centerline. The switch includes a jog function lever which is selectively movable between an operative position which will cause the levers of the toggle mechanism to return with a snap toggle action from a position which causes the contacts of the switch to be closed to a position wherein the contacts of the switch are open when a manual force on the ON button or lever is removed when the jog function lever is at one position and which will permit the toggle mechanism to move and remain in the position whereat the contact of the switch remain closed after the manual force which is used to actuate the ON button or lever is removed.

Description

United States Patent (72] Inventor Jordan F. Puetz 3,155,803 11/1964 Klein et al 200/153 Milwaukee, Wis. 3,349,208 10/1967 Cataldo et a1. 200/153 [2]] Appl. No. 9,205 3,430,014 2/1969 Walters 200/144 [22] Filed 1970 Primary ExaminerMilton O. Hlrshfield [45] Patented July Assistant Examiner R S Skudy [73] Asslgnee ggl z g sfmf Attorneys-Harold .1. Rathbun and William H. Schmeling [54] MANUALLY OPERATED TOGGLE ACTING ABSTRdCT: manually operated switch having a toggle swn-C HAVING A JOB FUNCTION LEVER mechanism which applies positive pressure between the con- 7Claims summing at tacts of the switch during the interval the toggle levers are passing through the toggle centerlme. The switch includes a 1 Zoo/153i jog function lever which is selectively movable between an 200/71'335/2512O0/72 operative position which will cause the levers of the toggle [5i 11". Cl H0"! mechanism to return with a snap toggle action from a position Fleld Of Search cause the contacts of the witch to be closed to a posi. 1 72, 153-7, 169 335/25 tion wherein the contacts of the switch are open when a References Cited manual force on the ON button or lever is removed when the jog function lever is at one position and which will permit the UNITED STATES PATENTS toggle mechanism to move and remain in the position whereat 3,032,624 5/1962 Gribble et al. 200/71 the contact of the switch remain closed after the manual force 3,067,307 12/1962 Ramath 200/150 which is used to actuate the ON button or lever is removed.

PATENTEU JUL SIB?! 3,591 745 has 2 v sol2 #0 62 FIG I n 36 29 3 32 5o Q 28 2 e0 2 INVIZNI'OR.

JORDAN F. PUETZ MANUALLY OPERATED TOGGLE ACTING SWITCH HAVING A JOB FUNCTION LEVER This invention relates to an electric switch and is more particularly concerned with an arrangement which will provide a manually operated switch, such as a manually operable motor starter, with a jog function.

Switches known as manually operated motor starters are frequently used in unsophisticated circuits to control the energization of electric motors, electromagnetic clutches and the like from a single control station. On occasion it has been found desirable that switches, known as manually operated starters, be provided with an arrangement which will permit the contacts of the switch to be rapidly moved to a circuit closing position and a circuit opening position so that the apparatus powered by the motor or clutch may be inched. An example of an inching operation which is frequently encountered is the adjustment and setting of the height of the dies in a metal press in which the movement of the working members of the apparatus must be executed in controlled short increments to accurately position the dies in the press during setup. The jog function lever, as incorporated into the manual starter according to the present invention, is arranged so that when the lever is at one position it will not interfere with the operation of the switching function of the starter and when positioned in another position it will automatically return the toggle mechanism of the switch and the contact carrier to a circuit opening position when the manual force on the start button is removed.

It is an object of the present invention to provide a manually operated electric switch that has a toggle-lever type actuating mechanism with a lever arrangement that will automatically move the levers of the toggle mechanism from an actuated position to a deactuated position when a manual force required to move the toggle levers to the actuated position is removed.

A further object is to provide a manually operated switch with a lever arrangement which will provide the switch with a jog function when the lever is selectively positioned at an operative position and without a jog function when the lever is selectively positioned in an inoperative position.

An additional object is to provide a manually operated motor starter with a lever arrangement that is included within the housing for the switch and arranged so the switch may be programmed to provide a jog function when the lever is at one selected position in the switch housing and without a jog function when the lever is positioned in a second position in the switch housing.

Another object is to provide a manually operated switch, such as a manually operated starter, with a housing that provides an enclosure for a movable contact carrier, a toggle lever mechanism for moving the carrier between a contact opening and a contact closing position and a lever which may be selectively moved from an inoperative position to an operative position wherein the levers of the toggle mechanism are automatically moved from a position wherein the movable contacts of the switch, that are supported by the carrier, are in a circuit closing position to a position wherein the contacts are in a circuit opening position when a manual force required to move the levers of the toggle mechanism to the circuit closing position is removed.

A still further object is to provide a manually operated switch, such as a manually operated starter, with a housing that provides an enclosure for a movable contact carrier, a toggle lever mechanism that is arranged to move contacts carried by the carrier to a circuit closing position and to a circuit opening position with stationary contacts of the switch when the toggle mechanism is in an actuated and a deactuated position and means including a lever which may be selectively moved from an inoperative position to an operative position to provide the switch with a jog function when the lever is at its operative position and to provide the lever with a portion which will prevent movement of the lever to its operative position when the levers of the toggle mechanism are in the activated position.

Another object is to provide a manually operated starter, with a housing that provides an enclosure for a movable contact carrier, a toggle lever mechanism that is arranged to be actuated manually from the exterior of the housing to move and maintain the contacts carried by the carrier in a circuit opening position and a circuit closing position with stationary contacts of the switch when the toggle mechanism is manually moved from a deactivated position to an activated position and a means to provide the switch with a jog function with said means including a main lever having a portion pivoted within the housing and a portion extending externally of the housing so that the portions of the lever within the housing may be selectively moved to two positions within the housing, a return lever pivotally on a portion of the main lever with the housing to have a portion engageable with a portion of an operating lever of the toggle mechanism and a spring biasing the return lever so that the operating lever is moved by the return lever to position the toggle mechanism in the deactivated position when a manual force which positions the operating lever of the toggle mechanism in the activated position is removed.

Further objects and features of the invention will be readily apparent to those skilled in the art from the specification and appended drawing illustrating certain preferred embodiments in which:

FIG. I is a side view partly in cross section of a manually operated electric switch incorporating the features of the present invention.

FIG. 2 is a top end view partly in cross section taken along a line 2-2 in FIG. 1 illustrating a lever arrangement, which provides the switch with the jog function, in an operative position.

FIG. 3 is a view partly in cross section illustrating the lever arrangement in FIG. 2 in an inoperative position.

FIG. 4 is a diagrammatic view illustrating the position of the toggle mechanism of the switch and the jog lever arrangement in an operative position when the ON button of the switch is depressed.

FIG. 5 is a diagrammatic view of the toggle mechanism of the switch and the jog lever arrangement when the jog lever is in an inoperative position and the OFF-RESET button of the switch is depressed.

The switch 10, as shown in the drawing, includes an upper section 12, a lower section 14 which are secured together to form the housing 16. The switch 10 is more fully described in an application for U.S. Pat. Ser. No. 9203, which has been filed by the inventor .lordan F. Puetz concurrently herewith and has been assigned to the assignee of the present application. As disclosed in the Puetz application, the lower section 14 is arranged to be mounted on a vertical panel (now shown) and includes a portion 18 that is suitably compartmented and includes means which will respond to an excess current flow through a circuit to be monitored. The particular means includes three melting alloy type current responsive elements, each of which is positioned in a compartment and includes a solder-type current responsive unit that has a heater element connected in series with a circuit to be monitored and a ratchet wheel which is normally held stationary when the current flow through the heating element does not exceed a preselected value and which is released to rotate upon excessive current flow through the unit. The release of the ratchet wheels will cause any one of the plurality of sliders (not shown) to move in the portion 18 and thereby move a lever 20 in a clockwise direction of rotation about a pivot 22. The movement of the lever 20 causes a slider 24 to move upwardly in FIG. 1 to cause a disengagement between a hook 26 and a hook 28 so that a toggle mechanism 30 within a cavity 32 in the upper section 12 is released and moves to a tripped position. Also included within the cavity 32 is a movable contact carrier 34, and a lever means 36 which will provide the switch It) with ajog function, as will be hereinafter described.

The movable contact carrier 34 is suitably guided by portions of the upper section 12 to move in a linear path along an axis 38 within the cavity 32 between a position wherein movable contacts 40, carried by the movable contact carrier 34, are disengaged from stationary contacts 42 of the switch 10 to a position wherein the movable contacts 40 bridge the stationary contacts 42 when the contact carrier 34 is moved to the position shown in FIG. 1 by the toggle mechanism 30 against the force of suitable springs, not shown, which react upon a stabilizing bar 44 in a manner described in the Puetz application. The toggle mechanism 30 includes a toggle lever 46, an operating lever 48, a trip lever 50, a toggle spring 52, a toggle latch lever 54, a latch lever spring 56, a trip lever latch that includes the hook 26 and a means for moving the operating lever 48, which in the embodiment shown, includes an OFF- RESET button 60 and an ON button 62. The upper section 12 provides a support for a main pivot 64 of the toggle mechanism 30.

The operating lever 48 and the trip lever 50 are rotatable about the main pivot 64 and have arm portions extending in opposite directions from the pivot .64. The portion of the trip lever 50 extending to the left of the pivot 64 in FIG. I carries the hook 28. The portion of the trip lever 50 extending to the right of the main pivot 64 includes an auxiliary pivot 66. The operating lever 48, which has arm portions extending in opposite directions from the main pivot 64, has a pin 68 secured on an end of the arm portion extending to the right of the pivot 64 and a pin 70 secured on the end of the arm portion extending to the left of the main pivot'64.The OFF-RESET button 60 and the ON button 62 are respectively secured through a slotted connection, not shown, with pins 72 and 74 that are respectively carried on the arm portion of the operating lever 48 to the left and right of the main pivot 64 so that the

buttons

60 and 62, which are suitably guided for vertical movement by portions of the upper section 12, will cause the operating lever to move in a clockwise direction when the ON button 62 is depressed and in a counterclockwise direction of rotation when the OFF button 60 is depressed.

The operation of the toggle mechanism 30 is as follows. The

levers of the toggle mechanism 30 are shown in the OFF- RESET condition in FIG. wherein engagement between the

hooks

26 and 28 causes a spring, not shown, to be compressed and maintains the trip lever 50 against a clockwise rotation and positions the lever 50 so that the auxiliary pivot 66 is located above a centerline indicated by a broken line 76 which extends through the main pivot 64. The button 60, which has been previously depressed, positions the operating lever 48 so the pivot pin 68 is located above the centerline 76. The toggle spring 52 has its opposite ends connected between the pin 68 and a pin 78 that is carried on the end of an arm portion of the toggle lever 46 on the left side of the pivot 64. The position of the pin 68 above the centerline 76 causes a line of centers between the

pins

68 and 78 to be disposed above the centerline 76 so that the toggle spring 52 causes toggle lever 46 to be positioned on the auxiliary pivot 66 so that the pin 78 is above the centerline 76 and an actuating portion 80 on the toggle lever 46 to be positioned so that the movable contact carrier 34 is moved forwardly in the base by springs to a position wherein the movable contacts 40 are separated from the stationary contacts 42. When the toggle mechanism is in the OFF position, a stop carried by the toggle lever 46 engages an upper edge on the trip lever 50 to prevent further movement of the toggle lever 46 and the operating lever 48 by the toggle spring 52.

The toggle mechanism 30 is moved from the OFF-RESET position shown in FIG. 5 to the ON position shown in FIGS. 1 and 4, by depressing the operating button 62. The depression of the button 62 causes the operating lever 48 to rotate about the pivot 64 in a clockwise direction so that the pivot pin 68 is positioned beneath the centerline 76 which causes the line of centers between the pin 68 and the pin 78 to be disposed beneath the center pivot 64 whereby the toggle spring 52 causes the toggle lever 46 to rotate about the auxiliary pivot 66 and position the pin 68 below the centerline 76. The movement of the toggle lever 46 causes the actuating portion 80 to move toward the lower section 14 so that the movable contact carrier 34 moves and causes the movable contacts 40 to engage the stationary contacts 42 with a firm engagement as the movable contacts 40 compress the springs which engage the movable contacts 40. The movement of the levers of the toggle mechanism 30 when positioned in the ON position is limited by a stop that is carried by the trip lever 50 which engages an upper surface portion on the toggle lever 46.

In the event of an excess current flow through any one or all of the overload elements in the portion 18, the levers of the toggle mechanism 30 will automatically move to the TRIP position as follows. When the toggle mechanism 30 is positioned in the ON position, the spring, not shown, which biases the TRIP lever in a clockwise direction of rotation, will be compressed,

pins

68 and 78 will be located below the centerline 76, and the auxiliary pivot 66 will be positioned above the centerline 76. The contact carrier 34 is positioned by the portion 80 so that the stationary contacts 42 are bridged by the movable contacts 40. An excess current through any one or all of the overload elements will release the ratchet wheels, thereby releasing the sliders within the portion I8 so the sliders move forwardly. The forward movement of the released sliders will cause the lever 20 to rotate about its pivot 22 and the slider 24 to be moved forwardly. The slider 24 has a portion engaging a portion of the lever which carries a hook 26 so that the forward motion of the slider 24 through a camming action causes the hook 26 to rotate clockwise and release the hook 28. The release of the hook 28 permits the TRIP lever 50 to rotate in a clockwise direction to a TRIPPED position. During the rotation of the TRIP lever 50 to the TRIPPED position, theauxiliary pivot 66 will pass through a line of centers between the

pins

68 and 78 to a position below the centerline 76. The movement of the auxiliary pivot 66 to the TRIPPED position causes the toggle spring 52 to supply a force which rotates the toggle lever 46 in a clockwise direction and the operating lever 48 to rotate in a counterclockwise direction to a neutral position wherein the position of the operating lever 48 will cause the buttons and 62 to be positioned so thattheir top surfaces are aligned in a single plane and visually indicate from the exterior of the switch 10 that the components of the switch 10 have responded to an overload condition. Also, when the toggle mechanism is in an over: load position, the portion 80 will be in a fully retracted position so that the contact carrier 34 is moved upwardly to a position wherein the movable contacts 40 are separated from the stationary contacts 42.

The toggle latch lever 54 comprises a U-shaped member having a pair of arms pivotally mounted on members forming the trip lever 50. The arms of the latch lever 54 are interconnected by a bright portion 82. The lever 54 has a surface 84 which is engaged by a portion 86 on the operating lever 48 when the operating lever 48 is moved to the OFF position and a portion that is engaged by a portion, not shown, on the member which carries the hook 26.when the member rotates in a clockwise direction when one of the overload elements within portion 18 responds to an excess current flow. The toggle latch lever spring 56 surrounds the pivot for the lever 54 and constantly urges the latch lever 54 in a clockwise direction of rotation in FIG. 1.

The operation of the toggle latch lever 54 will now be described. When the levers of the toggle mechanism 30 are in the OFF position, the portion 86 of the operating lever 48 will engage the surface 84 and move the latch lever 54 in a counterclockwise direction so that the bright portion 82 is out of engagement with the hook on the toggle lever 46. When the levers of the toggle mechanism 30 are in the ON position, the operating lever 48 will be separated from the surface 84 on the latch lever 54 so the latch lever spring 56 will rotate the latch lever 54 in the clockwise direction to a position wherein the bright portion 82 is engageable with a hook on the toggle lever 46. When the button 60 is depressed to move the operating lever 48 from the ON position to the OFF position, the bight portion 82 will be maintained in engagement with the hook on the toggle lever 46 until the line of centers between the

pins

68 and 78 has passed a predetermined distance above the axis of the pivot 64 before the portion 86 engages the surface 84 so the contact carrier 34 will be maintained in a position wherein the movable contacts 40 are in tight engagement with the stationary contacts 42 and positive pressure is maintained by the movable contacts 40 and stationary contacts 42 as the toggle mechanism 30 passes through a line of toggle centers which would otherwise provide zero pressure between the movable and stationary contacts. When the components of the switch respond to an overload condition, as has been previously described, which causes the hook 26 to rotate in a clockwise direction, a portion of the lever carrying the hook 26 is arranged to engage a portion 90 to rotate the lever 54 in a counterclockwise direction to release the engagement between the bight portion 82 and the hook on the toggle lever 46 so that the toggle lever 46 is free to rotate in a clockwise direction to the TRIPPED position, as has been previously described.

After the switch 10 has responded to an overload current condition, the components of the switch may be restored to the OFF-RESET position as follows. As previously indicated, the switch 10 will respond to an overload current condition and cause the

buttons

60 and 62 to be aligned. The depression of the OFF-RESET button 60 from its aligned position with the button 62 will cause the operating lever 48 to rotate in a counterclockwise direction and cause a pin 70 to engage the upper surface of the trip lever 50 and move the trip lever 50 in a counterclockwise direction of rotation to the RESET position. The lever 48 has portions thereon which are arranged to engage portions on the slider 24 and move the slider 24 when the lever 48 rotates in a counterclockwise direction. A portion on the slider 24 will thus cause'the lever to rotate counterclockwise and the sliders within the portion 18 to move to a position wherein latch portions on the sliders are positioned to engage the teeth of the ratchet wheels. In the event the solder in all of the overload elements within the portion 18 has been solidified so that the ratchet wheels will no longer be free to rotate, the lever 20 willbe maintained in its RESET position so that a spring, not shown, will move the lever carrying the hook 26 to a position which will permit the hook 26 to engage the hook 28 and maintain the trip lever 50in the RESET position, as previously described. In event the ratchet wheels are not held fixed, as may be caused when the device is prematurely reset, the release of the operating OFF-RESET button 60 will cause the sliders within the portion 18 to move the lever 20 and the slider 24 as previously described. Thus the switch 10 will have a trip-free operation.

Thus the switch 10 as described will maintain a positive pressure between the switching contacts during the interval the levers of the toggle mechanism are passing through positions which would otherwise provide a zero output force on the movable contact carrier. Further, the toggle mechanism 30 of the switch 10 is arranged so that the operating buttons or rotatable lever will move to positions which indicate the switch has responded to an excess current condition.

A means 100 for providing a switch with ajog function includes ajog selection lever 102, a spring return lever 104, and a spring 106. The jog selection lever 102 has a portion pivotally mounted on the upper section 12 within the cavity 32 and extends through a slot 108 in the forward wall of the upper section 12 to present a portion 110 that is externally accessible of the housing 16. Located between the external accessible portion 110 and the pivot 112 for the jog selection lever 102 is a pivot 114 whereon the spring return lever 104 is rotatably mounted. Positioned between a spring seat formed on the jog selection lever 102 and a spring seat on the spring return lever 104 on the right side of the pivot 114 is the spring 106. The spring 106 is arranged to constantly urge the spring return lever 104 in a clockwise direction of rotation, as in FIG. 3. The rotation of the spring return lever 104 in the clockwise direction is limited by a stop 116 on the jog selection lever 102 which is engaged by the arm portion of the spring return lever extending to the left of the pivot 114 which is designated by a numeral 118. The arm portion 118 extends to be in the path of movement of an end portion 120 on the operating lever 48 as the operating lever 48 is moved by the button 62 to the ON position when the jog selection lever 102 is positioned as in FIG. 4. When the job selection lever 102 is moved in a second position in slot 108, as shown in FIG. 5, the means providing the switch 10 with ajog function will be inoperative as the arm 118 will be out of the path of movement ofend 120. When the jog selection lever 102 is positioned as shown in FIG. 4, and the button 62 is depressed to move the components of the switch 10 to an ON position, the movement of the end 120 will engage the arm 118 and cause the spring return lever 104 to rotate in a counterclockwise direction against the force supplied by the spring 106. As was previously described, when the toggle mechanism 30 is positioned in the ON position, the toggle spring 52 will cause the

pins

68 and 78 to be positioned below the centerline 76 so that the toggle mechanism is maintained in the ON circuit closing position. The spring 106 is selected to have a force which exceeds the force supplied by the toggle spring 52. Thus when the manual force required to depress the button 62 is removed, the spring 106 will cause the spring return lever 104 to rotate in a clockwise direction and thereby move the operating lever 48 from the ON position shown in FIG. 4 to the OFF position as illustrated by FIG. 5. The movement of the pin 68 which accompanies the movement of the operating lever 48 to the OFF position will cause the toggle spring 52 to move the toggle lever 46 to the OFF position as has been previously described. Thus when the means which provided the switch with a jog function is in an operative position, as illustrated in FIG. 4, the depression of the button 62 to move the toggle mechanism 30 to an ON position will cause the toggle mechanism 30 to remain in the ON position as long as a manual force is applied to the button 62. Upon removal of the manual force on the button 62, the means 100 will automatically return the toggle mechanism 30 and the button 62 to an OFF position as has been previously described.

While certain preferred embodiments of the invention have been specifically disclosed, it is understood that the invention is not limited thereto, as many variations will be readily apparent to those skilled in the art and the invention is to be given its broadest possible interpretation within the terms of the following claims.

What I claim is:

1. In an electric switch, the combination comprising: a switch housing providing an internal cavity, a contact carrier movable along a linear path within the cavity between a contact opening and a contact closing position, resilient means constantly urging the carrier to the contact opening position, a toggle mechanism within the cavity, said toggle mechanism including an operating lever, means providing access to the operating lever from the exterior of the housing for moving the operating lever about a main pivot between an OFF position and an ON position when a manual force is applied through the means to the operating lever from the exterior of the housing, a toggle lever rotatable about an auxiliary pivot between a deactivated position and an activated position, said toggle lever having a portion engaging the contact carrier for moving the carrier from the contact opening position to the contact closing position when the toggle lever is moved from the deactivated position to the activated position, and a toggle spring having its opposite ends connected between the operating lever and the toggle lever, said toggle spring providing a connection between the operating lever and the toggle lever for moving the toggle lever with an overcenter toggle action between its deactivated and activated positions when the operating lever is moved respectively between its OFF and ON positions and for maintaining the toggle lever and the operat ing lever respectively in the deactivated position and the OFF position when the operating lever is manually moved to the OFF position and the manually applied force on the operating lever is removed and for maintaining the toggle lever and the operating lever respectively in the activated position and the ON position when the operating lever is manually moved to the ON position and the manually applied force is removed, and a means providing the switch with a jog function, said jog .providing means including a jog lever having a portion pivotally mounted within the cavity and a portion extending external of the housing for selectively moving portions of the jog lever to two positions within the cavity, and a resilient means carried by said portion of the jog lever within the cavity to engage portions of the operating lever when the jog lever is in one selected position for supplying a force for automatically moving the operating lever and the toggle lever respectively to the OFF position and the deactivated position when the operating lever is in the ON position and the manually applied force on the operating lever is removed.

2. The combination as recited in claim 1 wherein the resilient means carried by the jog lever includes a spring return lever that is rotatably mounted on the portion of the jog lever within the cavity, a stop carried by said portion of the jog lever for limiting the rotation of the spring return lever in one direction and a spring having its opposite ends reacting between the jog lever and the spring return lever providing a force for constantly urging the spring return lever in said one direction of rotation. v

3. The combination as recited in claim 2 wherein the spring return lever includes a portion that is aligned to be engaged by portions of the operating lever when the jog lever is at a first of said two positions and the operating lever is moved to the ON position and to be out of the path of movement of said operating lever when the jog lever is at a second of said two positions.

4. The combination as recited in claim 3 wherein the spring return lever includes a portion that is engageable with portions of the operating lever for preventing the jog lever from being moved from the second position to the first position when the operating lever is at the ON position.

5. The combination as recited in claim 4 wherein the operating lever and the toggle lever move in parallel planes and the jog lever is movable in a plane that is perpendicular to the parallel planes.

6. The combination as recited in claim 1 wherein the operating lever and the toggle lever move in parallel planes and the jog lever is movable in a plane that is perpendicular to the parallel planes.

7. The combination as recited in claim 5 wherein the toggle spring has an end connected to an end portion of the operating lever and the spring return lever has a portion engageable with the end of the operating lever to which the toggle spring is connected.

252 2 3 UNITED STATES PATENTIYOFFICE CERTIFICATE OF CORRECTION Patent No. 3,59 ,7 Dated uly 6, 1971 Inventor(s) Jordan P11 132 It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Iitle Page, in the title, for "JOB" read --JOG--; in the abstrac z,

line 13, for "contact" read --contacts.

C01. 1, line 2, for "JOB" read --JOG--.

Col. 2, line 3, after "operated" insert --switch, such as a manually operated-.

C01. 3, true line 30 (appearing as line 31), for "portion" read --portions--; true line 70 (appearing as line 72) after "center" insert --of the-- 001. 4, true lines 50, 6 and 70 (appearing as "

lines

52, 66 and 72) each occurrence, for "bright" read -bight.

C01. 6, true line 29 (appearing as line 30), for "provided" read --provides--.

Signed and sealed this l th day of January 1972.

(SEAL) Attest:

EDWARD M.FLETCHER, JR. ROBERT GOTTSCHALK Attesting Officer Acting Commissioner of Patents

Claims

1. In an electric switch, the combination comprising: a switch housing providing an internal cavity, a contact carrier movable along a linear path within the cavity between a contact opening and a contact closing position, resilient means constantly urging the carrier to the contact opening position, a toggle mechanism within the cavity, said toggle mechanism including an operating lever, means providing access to the operating lever from the exterior of the housing for moving the operating lever about a main pivot between an OFF position and an ON position when a manual force is applied through the means to the operating lever from the exterior of the housing, a toggle lever rotatable about an auxiliary pivot between a deactivated position and an activated position, said toggle lever having a portion engaging the contact carrier for moving the carrier from the contact opening position to the contact closing position when the toggle lever is moved from the deactivated position to the activated position, and a toggle spring having its opposite ends connected between the operating lever and the toggle lever, said toggle spring providing a connection between the operating lever and the toggle lever for moving the toggle lever with an overcenter toggle action between its deactivated and activated positions when the operating lever is moved respectively between its OFF and ON positions and for maintaining the toggle lever and the operating lever respectively in the deactivated position and the OFF position when the operating lever is manually moved to the OFF position and the manually applied force on the operating lever is removed and for maintaining the toggle lever and the operating lever respectively in the activated position and the ON position when the operating lever is manually moved to the ON position and the manually applied force is removed, and a means providing the switch with a jog function, said jog providing means including a jog lever having a portion pivotally mounted within the cavity and a portion extending external of the housing for selectively moving portions of the jog lever to two positions within the cavity, and a resilient means carried by said portion of the jog lever within the cavity to engage portions of the operating lever when the jog lever is in one selected position for supplying a force for automatically moving the operating lever and the toggle lever respectively to the OFF position and the deactivated position when the operating lever is in the ON position aNd the manually applied force on the operating lever is removed.

2. The combination as recited in claim 1 wherein the resilient means carried by the jog lever includes a spring return lever that is rotatably mounted on the portion of the jog lever within the cavity, a stop carried by said portion of the jog lever for limiting the rotation of the spring return lever in one direction and a spring having its opposite ends reacting between the jog lever and the spring return lever providing a force for constantly urging the spring return lever in said one direction of rotation.