US2654011A - Electric switch - Google Patents
Electric switch Download PDFInfo
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- US2654011A US2654011A US173820A US17382050A US2654011A US 2654011 A US2654011 A US 2654011A US 173820 A US173820 A US 173820A US 17382050 A US17382050 A US 17382050A US 2654011 A US2654011 A US 2654011A
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- US
- United States
- Prior art keywords
- blade members
- insulating
- base
- stationary
- cover
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts
Definitions
- a further object of this invention is to provide an improved formof construction for a pivoted blade-member providing .a switching surface on its end edge entering along its longitudinal axis to minimize arc suppressor opening.
- Figure 1 is a front view of the switch with the cover removed showing theimproved form of the contact cover and are suppressor.
- Figure 2 is a verticalsectional view along line II-II of Figure 1 showing the electrical switch in the closed circuit position.
- Figure 3 is a vertical sectional view similar to Figure 2 but showing the electrical switch in the open circuit position.
- Figure 4 is a vertical sectional view of the contact cover along line IV-IV of Figure 2.
- Figure 5 is a vertical sectional view with the contact cover and are suppressor swung open to provide access to the contacts and terminals.
- Figure 6 is a horizontal sectional view along line VI .VI.of Figure 1.
- Figure '7 is a vertical sectional view alongline VII-VII of Figure 1 showing the switch-operating mechanism.
- the invention is specifically illustrated in an outer enclosing metal box -2 within which is.
- Pivotally mounted within the hinge jaws .9zbyzmeansof hollow rivets I5 aresubstantially Yeshapediblad'e members It, the hollow rivets I5 :passing :through legs I1 of the blade members 1:6.
- the other l'egs I8 of the blade members IB engagetheistationary contact Jews '5 when theswitchis inithe closed position.
- Extensions of :the bases iof -the :blade members It have-recesses I9 .cutthereiniwhich receive an insulating .bar 2I embracing the :oper'ating bail 22.
- insulating cover 223 which may be secured to the insulating base 5
- the insulating cover 23 has:s1ol;s-'21 through which legs I8 .of'the blade members l6 pass to engage jaws 5.
- the switch operating mechanism as shown in Figures 1 and 7 consistsof an operator e39. having a handle 4
- a shielding and supporting bracket59 Upon'the inside-wall'of the box-2-ismounted a shielding and supporting bracket59 in spaced relation thereto.
- the plate 49 is provided with a pin 46 extending therefrom into engagement with a cutout portion, not shown, in the disc 42 so as to effect a lost motion connection therewith.
- the plate 49 is also provided with a pair of spaced flanges i and 52 embracing a leg of the bail 22 so as to provide a lost motion connection therewith.
- a spring guide 53 about which is disposed a main operating spring 6
- a light spring 56 has its opposite ends connected to the plate 49 at 58 and to the disc 42 at 51 so as to provide a resilient connection between the plate and disc so as to insure handle position and assist overcenter movement of the main operating 2 spring 6
- a latch 62 is biased by a spring 65 and carries a flange 63 engageable with a suitable notch, not shown, in the disc 42 to normally prevent operation of the contacts to closed position when the box cover is open, the cover engaging and moving the latch to inoperative position when in the closed position.
- the main operating spring 61 passes over center assisted by spring 56 and effects a rapid movement of the plate 49, bail 22 and switching blade 16 into the 01f position of Figure 3. In closing the contacts, a reverse action of the operating mechanism takes place to effect snap movement of the switching blades into engagement with the contact jaws.
- the blade members l6 are pivotally mounted within the jaws 9 on hollow rivets I5 through legs I1 of the blade members 16 with the other legs [8 of the blade members disposed to engage the stationary contact jaws 5 which are mounted on the insulating base I in line with the hinge jaws 9.
- the slotted insulating cover 23 is pivotally mounted to the hollow rivets l5 by means of the prongs 26 on resilient strips so as to fit flush on the surface of the insulating base I with the recesses 28 in complementary relationship with recesses 29 in the insulating base I.
- the complementary recesses 28 and 29 thus form are chambers about the contact jaws 5.
- the contacting legs [6 pass through narrow slots 21 through the insulating cover 23 which slots inhibit passage of the arc forwardly of the cover 23 and with the walls of the slots serving to cool ionized gases which tend to expel through the slots 21.
- the U-shaped magnetic plates 32 are magnetized by the insulating base I by means of the flow of arcing current between their legs to react with the arcs to draw them downwardly Within the chambers toward the bights of the Us and thus inhibit passage of arc gases from the tops of the chambers and thus tend to pre vent fiashover between poles.
- a distinctive feature of applicants switch lies in the formation of legs H and H! of member I6 such that the legs l8 enter the slots 21 and engage jaws 5 from an end edge thereof and along the longitudinal axis of the contacting edge as distinguished from a side edge and/or transverse axis of the contacting leg.
- This construction obviously minimizes the size of the slots through the insulating cover necessary to provide passage for the switching legs and also permits the proper placing of the U-shaped magnetic plates with their bights positioned to retain the arcs within the arc chambers.
- the insulating cover 23 is shown in its open position providing access to the contact jaws 5 and the terminal connectors 83. It will be noted that in this position the insulating cover 23 is supported on the switch by means of the prongs 26 on the resilient strips 25 engaging in the hollow rivets l5. With the switch in the off position, the screws 24 are loosened and the insulating cover swung to the open position of Figure 5, pivoting about the engagement of the prongs 26 in the rivets l5. After whatever manipulation or inspection of the jaws 5 and connectors 8 has been accomplished, the cover 23 is swung back counterclockwise into the position of Figure 3 and the studs retightened to place the switch again in operative condition.
- An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade-members, said blade members pivotally mounted on said base adjacent to the end of one leg and having their other leg cooperating with a stationary contact, an insulating cover mounted over the stationary contacts and terminals, said insulating cover having slots therethrough through which the blade members travel to contact the stationary contacts, and means pivotally mounting said cover at the pivotal mounting of said blade members so that it will swing to uncover the contacts and terminals While remaining supported at said pivotal mounting.
- An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade members, said blade members pivotally mounted on the base adjacent the end of one leg with the end of its other leg cooperating with a stationary contact, operating means insulated from said blade members and operable upon said blade members to open and close said electrical switch, an insulating cover for said stationary contacts and terminals hinged at the pivotal mounting of said blade members and having slots therethrough through which said blade members travel, and magnetic blowout means mounted in said insulating cover for directing c.) an are which may be formed between said sta tionary contacts and said blade members away from said terminals and toward said insulating cover.
- An electrical switch comprising in combination, an insulating base having cutout portions therein, stationary contacts and terminals mounted in said cutout portions, substantially Y-shaped blade members, said blade members pivotally mounted on the base adjacent the end of one leg and engaging said stationary contacts adjacent the end of the other leg, a bail member insulated from and operative upon said blade members to join said blade members for unitary operation, and an insulating cover for said insulating base hinged to the point of pivotal mounting of said blade members and having slots therethrough through which said contact legs of said blade members travel.
- An electrical switch comprising in combination, an insulating bas having a plurality of cutout portions therein, stationary contacts and terminals mounted in each of said cutout port s, substantially Y-shaped blade members, said class members pivotally mounted on the base adjacent the end or one leg and engageable with said stationary contacts adjacent the end or the leg, an operating bail member insulated. ire-m ard operative upon said blade members to join blade members for unitary operation, an in lating cover plate hinged to the pivotal mo ing of the said blade members, said insul cover plate having slots therethrough thr which the blade members travel to engage sad stationary contacts, and U-shaped m ti le arc suppressor members mounted on s. ing cover plate around said slots with is directed toward the pivotal mounting of members.
- An electrical switch comprising in tion, an insulating base, stationary contacts terminals mounted on said base, substant' .11 7 r'-- shaped blade members each pivotally mounted on the base adjacent the end of one leg and having its other leg cooperating with a stationary contact, insulating cover, resilient in hers in said insulating cover, said in ulating cover hinged to the pivotal mountings of said blade members by means of said resilient spring members, said cover covering said stationary contacts and terminals, and having slots therethrough through which the blade members travel to engage said stationary contacts.
- An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, blade members cooperating with said stationary contact-s, stationary posts mounted on said base in line with said contacts and terminals, said blade members pivotally mounted to said stationary p. s by means of hollow rivets, an insulating cover .1: nber for said stationary contacts having mounted thereon resilient strips carrying pro s, silient strips pivotally mounting said in cover to said stationary posts by engagement said prongs in said hollow rivets, and operating means for engaging and disengaging blade members and said stationary contacts.
- An electric switch comp-rising in combination, an insulating base, stationary contacts and terminals mounted on said base, blade members, stationary hinge posts mounted on said base in line with said contacts, said blade members pivotally mounted to said stationary posts and cooperating with said stationary contacts, an insulating cover for said stationary contacts pivotally mounted to said stationary posts at the pivotal mounting of said blade members so as to swing to uncover the contacts and terminals while supported on said stationary post, and operating means for engaging and disengaging said blade members and said stationary contacts.
- An electrical switch comprising in combination, an insulating base having a plurality of cutcnt portions therein providing unrestricted openings to the top of said insulating base, stationary contacts and terminals mounted in each of said cutout portions, substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the bas thereof, said blade members pivotally mounted to the base adjacent to the end of one leg and having their other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and interposing the end portions of the leg its-e11 in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an operating bail engaging said insulating bar providing a means for opening and closing said electrical switch, insulating cover for said insulating base having cutout portions therein providing unrestricted openings to the top of said insulating cover complementary with the cutout portions and openings in the insulating base, slots through said cover in line with said stationary contacts through which said blade members travel
- An electrical switch comprising in combination, an insulating base having a plurality of cutcutout portions, substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the base thereof, said blade members pivotally mounted to the base adjacent to the end of one leg and having their other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and inter-posing the end portions of the leg itself in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an operating bail engaging said insulating bar and providing means for opening and closing said electrical switch, an insulating cover for said insulating base having cutout portions therein and an unrestricted opening to the top of said insulating cover complementary with said cutout portions and openings in said insulating base, a plurality of slots through said cover in line with said stationary contacts through which said blade members travel, means pivotally mounting said cover on said base, and magnetizable, U-shaped, metallic plates mounted in the cutout portions of the
- An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein providing unrestricted opening to the top of said insulating base, stationary contacts and terminals mounted in each of said cutout portions, a plurality of substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the base thereof, said blade members pivotally mounted to the base adjacent the end of one leg and having its other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an
- operating bail engaging said insulating bar providing a means for opening and closing said electrical switch, an insulating cover for said insulating base having cutout portions therein and an unrestricted opening to the top complementary with said cutout portions and openings in said insulating base, a plurality of slots through said cover in line with said stationar contacts through which said blade members travel, and
- An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade members cooperating with said stationary contacts, stationary hinge jaws mounted on said base, said blade members pivotally mounted to said hinge jaws by means of hollow rivets, an insulating cover member for said stationary contacts, resilient strips carrying prongs mounted to said cover member, said insulating cover pivotally mounted to said hinge jaws by means of said resilient strips engaging said hollow' rivets whereby the insulating cover may be swung to uncover the contacts and terminals, and means for operating said blade members into and out of engagement with said stationary contacts.
- An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein, stationary contacts and terminals mounted in each of said cutout portions, stationary hinge jaws in line with said stationary contacts, a plurality of substantially Y-shaped blade members, said blade members pivotally mounted on said stationary hinge jaws by means of a hollow rivet through said hinge jaw and one leg of said blade member, the other leg of said blade member engaging the stationary contact along its longitudinal axis, an insulating cover for said insulating base, resilient strips carrying prongs mounted on said insulating cover, said prongs engaging said hollow rivets so that said insulating cover may be swung to uncover the contacts and terminals and may be bodily removed by disengagement of said prongs and said hollow rivets, slots through said insulating cover in line with said stationary contacts through which said blade members travel, a plurality of 'U -shaped, metallic plates mounted in said insulating cover with their legs embracing the path of movement of said blade members and their bights directed toward the pivotal mounting of
- An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, stationary hinge jaws mounted on said base in line with said stationary contacts and terminals, substantially Y-shaped blade members cooperating with a stationary contact and pivotally mounted to said stationary hinge jaws by means of hollow rivets, an insulating cover member for said stationary contacts, resilient strips carrying prongs mounted on said insulating cover, said insulating cover pivotally mounted to said hinge jaws by means of said resilient strips carrying prongs engaging said hollow rivets so that said insulating cover may be swung to uncover the contacts and terminals and may be bodily removed by disengagement of the prongs and the hollow rivets.
- An electrical switch comprising in combination, an insulating base, a plurality of stationary contact jaws and terminals mounted on said base, a plurality of substantially Y-shaped blade members cooperating with said stationary contact jaws, said blade members having recesses in the base legs thereof, each of said blade members being pivotally mounted on the base adjacent to the end of one open leg and having its other open leg entering the contact jaw along its longitudinal axis and at its end edge as distinguished from the side edge thereof, and interposing the end portions of the leg itself in engagement with the stationary contact jaw.
- An electrical switch comprising in combination, an insulating base, a plurality of station: ary contact jaws and terminals mounted on said insulating base, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its r p leg ing the stationary contact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contact jaw, an insulating bar joining said blade members for unitary operation by engagement in said recesses in said blade members, and an operating bail engaging said insulating bar and providing means for opening and closing said electric switch.
- An electrical switch comprising in combination, an insulating base, a plurality of sta tionary contact jaws and terminals mounted on said insulating base, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its other open leg engaging the stationary con tact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contact jaw, an insulating bar joining said blade members for unitary operation by engagement in said recesses in said blade members, an operating bail engaging said insulating bar and providing means for opening and closing said electric switch, and an insulating cover in front of said stationary contact jaws and having slots therethrough in line with the stationary contact jaws through which said other open legs of the blade members travel in engaging and disengaging the contact jaws.
- An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein, a plurality of stationary contact jaws and terminals mounted in each of said cutout portions, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its other open leg engaging a stationary contact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portion of the leg itself in engagement with the stationary contact jaw, means joining said blade members for unitary operation into and out of engagement with the contact jaw to perform the switching operation, and an insulating cover for said insulating base having cutout portions therein complementary with the cutout portions in said base, said cover having slots therethrough in line with said stationary contacts through which said other open legs of said blade members travel as they engage and disengage the stationary contact Jaws.
- an electrical switch an insulating base, a plurality of stationary contact jaws and terminals mounted upon said base, a plurality of conducting blade members cooperating with said stationary contact jaws, said blade members being pivotally mounted on the base for rotative movement into and out of engagement with the stationary contact jaws, the contact engaging portions of the blade members being constituted by legs disposed to enter the contact jaws along the longitudinal axis of the legs and at their end edges as distinguished from the side edges thereof, means for rotating said blade members as distinguished into and out of engagement with the contact jaws to eifect the switching operation, and an insulating cover in front of said stationary contact jaws and cooperating with the insulating base to form individual chambers about the jaws, said cover having slots therethrough, major with respect to the front wall and minor with respect to the bottom wall, through which the legs of the blade members pass in engaging and disengaging the contacts.
- an insulating base a plurality of stationary contact jaws and terminals mounted on said base, a plurality of conducting blade members pivotally mounted on said base for rotative movement into and out of engagement with the stationary contact jaws, each of said blade members having one portion remote from said stationary contact jaws provided with a pivotal mounting at its end and a contact portion remote from said pivot end disposed at a substantial angle to said one portion and entering the stationary contact jaws along the longitudinal aXis of the contact portion and at its end edge from the side edge thereof, an insulating cover cooperating with the insulating base to form individual contact chambers about said contact jaws, said insulating cover having slots therein, major with respect to the front wall thereof and minor with respect to the bottom wall, the contact portions of said blade members passing through said slots with the longitudinal axes of the contact portions substantially at right angles to the front wall of the insulating cover, and means joining said blade members for common movement as a unit into and out of engagement with the stationary contact jaws to perform the switching operation.
- an electric switch an insulating base, a plurality of stationary contact jaws and terminals mounted on said base, a plurality of conducting blade members pivotally mounted on the base for rotative movement into and out of engagement with the stationary contact jaws, each of said blade members having one portion remote from said stationary contact jaws provided with a pivotal mounting at its end and a contact portion remote from said pivot and disposed at a substantial angle to said one portion and entering the stationary contact jaws along the longitudinal axis of the contact portion and at its end edge as distinguished from the side edge thereof, extending portions on said blade members substantially in line with the contact portions thereof, recesses in said extending portions, insulating means engaged in said recesses to join said blades for common movement, and an operating bail engaging said insulating means to effect operation of the blades to perform the switching operation.
Description
Sept. 29, 1953 R. H. KINGDON ELECTRIC SWITCH 5 Sheets-Sheet 1 Filed July 14, 1950 INVENTOR id/f fl/I'ri BY Sept. 29, 1953 R. H. KINGDON ELECTRIC SWITCH 3 Sheets-Sheet 2 Filed July 14, 1950 a ray/vii.
Filed July 1950 3 Sheets-s 3 Z' 3 M Q [I T A? 1/2 I;
A; x 2/ AL: I; #7 24 i i Patented Sept. 29, 1953 Ralph H. Kingdon, Detroit, Mich., assignor to Square D Company, Detroit, Mich., .a corporation of .Michigan Application July1 4, 1950, Serial No. 173,820
21 Claims.
. the switch.
A further object of this invention is to provide an improved formof construction for a pivoted blade-member providing .a switching surface on its end edge entering along its longitudinal axis to minimize arc suppressor opening.
Further objectsand features of :the invention will be readily apparentto those skilled in the art from the specification and appended drawings illustrating certain preferred embodiments in which:
Figure 1 is a front view of the switch with the cover removed showing theimproved form of the contact cover and are suppressor.
Figure 2is a verticalsectional view along line II-II of Figure 1 showing the electrical switch in the closed circuit position.
Figure 3 is a vertical sectional view similar to Figure 2 but showing the electrical switch in the open circuit position.
Figure 4 is a vertical sectional view of the contact cover along line IV-IV of Figure 2.
Figure 5 is a vertical sectional view with the contact cover and are suppressor swung open to provide access to the contacts and terminals.
Figure 6 is a horizontal sectional view along line VI .VI.of Figure 1.
Figure '7 is a vertical sectional view alongline VII-VII of Figure 1 showing the switch-operating mechanism.
The invention is specifically illustrated in an outer enclosing metal box -2 within which is.
mounted an insulating base I withasecond insulating member '3mounted therein carrying fuse clips and terminals and spaced'from the insulating base I in such a manner-as to receive fuses extending from fuse clips I3 on the insulating base I.
Mounted on the insulating base I by means of screws 4 area pluralityof stationary contact jaws 5 and conducting stripst. Mountedonthe opposite ends of conducting strips 6 by means of :passes.
screws Tare terminal connectors 8. In line' with and spaced from the stationary contact jaws 5, hinge jaws 9and conducting strip lI-aremounted on the-insulating base I by means of screws [2, conducting istrip II :being connected to the fuse clips I3 by means of screws I4. Pivotally mounted within the hinge jaws .9zbyzmeansof hollow rivets I5 aresubstantially Yeshapediblad'e members It, the hollow rivets I5 :passing :through legs I1 of the blade members 1:6. The other l'egs I8 of the blade members IB engagetheistationary contact Jews '5 when theswitchis inithe closed position. Extensions of :the bases iof -the :blade members It have-recesses I9 .cutthereiniwhich receive an insulating .bar 2I embracing the :oper'ating bail 22.
'CoVeling the :stationary contact jaws t5 and the terminals 8 is 'a slotted insulating cover 223 which may be secured to the insulating base 5| by suitable means such asscrews-iu. .Secured in the insulating cover 23 by .anyfsuitablez'means such as azsealing cement-at 538 are a pairof resilient-strips 25 having their free end-bentover so as i to produce LDI'OIlgS 2:6 which engage within the hollow rivets I5'as shown inFigures 1-and'5. The insulating cover 23 has:s1ol;s-'21 through which legs I8 .of'the blade members l6 pass to engage jaws 5. 'The'uppenback wall-of the insulating cover 23 hasirecesses fl: cut therein .such thatthe recesses 28ers complementarywith similar recesses 29 inithe=insulating base I in-which the stationary contact jaws'5 and theiterminals 8 are mounted.
The switch operating mechanism as shown in Figures 1 and 7 consistsof an operator e39. having a handle 4| and afiat disclikeportion 42 pivoted on the sidewallof theenclosingboxl by meanseof a threaded shaft 43.and nut-44.
Upon'the inside-wall'of the box-2-ismounted a shielding and supporting bracket59 in spaced relation thereto. Between the bracket 59 and the box side-wall ismounted a-shaft 48 withthe operating disc 42 provided with .a suitable .cutout portion, not shown,.through which theshaft Upon the shaft-48 -.is pivotallymounted an intermediate operating plate 49 and one end of the operating bail 22, the other end of the bail being pivoted in the box wall. The plate 49 is provided with a pin 46 extending therefrom into engagement with a cutout portion, not shown, in the disc 42 so as to effect a lost motion connection therewith. The plate 49 is also provided with a pair of spaced flanges i and 52 embracing a leg of the bail 22 so as to provide a lost motion connection therewith. A spring guide 53, about which is disposed a main operating spring 6|, is slidably mounted in a guide 50 swivelled on the side wall of the enclosing box and has a pin 54 on its other end received Within a slot 55 in the intermediate operating plate 49. A light spring 56 has its opposite ends connected to the plate 49 at 58 and to the disc 42 at 51 so as to provide a resilient connection between the plate and disc so as to insure handle position and assist overcenter movement of the main operating 2 spring 6|.
A latch 62 is biased by a spring 65 and carries a flange 63 engageable with a suitable notch, not shown, in the disc 42 to normally prevent operation of the contacts to closed position when the box cover is open, the cover engaging and moving the latch to inoperative position when in the closed position.
The parts shown in Figures 1, 2, 4, 6 and 'I are in the closed circuit or contacts engaged position, with the legs 18 of the blade members It engaged with the contact jaws 5. To open the contacts, the handle 41 is moved downwardly as viewed in Figure 1 and in a clockwise direction as viewed in Figures 2 and '7. This rotates the disc 42 into engagement with pin 46 to effect rotation of the operating plate 49 also in a clockwise direction as viewed in Figure 7. As plate 49 rotates, it will rotate the spring guide 53 in a counter-clockwise direction and will move the flange 5! into engagement with the bail 22 so that there will be formed a direct positive connection between handle l4 and switch blades IE to start the movements of the legs [8 out of the jaws 5. Before the blade leaves the jaws, the main operating spring 61 passes over center assisted by spring 56 and effects a rapid movement of the plate 49, bail 22 and switching blade 16 into the 01f position of Figure 3. In closing the contacts, a reverse action of the operating mechanism takes place to effect snap movement of the switching blades into engagement with the contact jaws.
As has been previously described, the blade members l6 are pivotally mounted within the jaws 9 on hollow rivets I5 through legs I1 of the blade members 16 with the other legs [8 of the blade members disposed to engage the stationary contact jaws 5 which are mounted on the insulating base I in line with the hinge jaws 9. The slotted insulating cover 23 is pivotally mounted to the hollow rivets l5 by means of the prongs 26 on resilient strips so as to fit flush on the surface of the insulating base I with the recesses 28 in complementary relationship with recesses 29 in the insulating base I. The complementary recesses 28 and 29 thus form are chambers about the contact jaws 5. The contacting legs [6 pass through narrow slots 21 through the insulating cover 23 which slots inhibit passage of the arc forwardly of the cover 23 and with the walls of the slots serving to cool ionized gases which tend to expel through the slots 21. Within the chambers formed by the recesses 28 and 29, the U-shaped magnetic plates 32 are magnetized by the insulating base I by means of the flow of arcing current between their legs to react with the arcs to draw them downwardly Within the chambers toward the bights of the Us and thus inhibit passage of arc gases from the tops of the chambers and thus tend to pre vent fiashover between poles.
A distinctive feature of applicants switch lies in the formation of legs H and H! of member I6 such that the legs l8 enter the slots 21 and engage jaws 5 from an end edge thereof and along the longitudinal axis of the contacting edge as distinguished from a side edge and/or transverse axis of the contacting leg. This construction obviously minimizes the size of the slots through the insulating cover necessary to provide passage for the switching legs and also permits the proper placing of the U-shaped magnetic plates with their bights positioned to retain the arcs within the arc chambers.
In Figure 5 the insulating cover 23 is shown in its open position providing access to the contact jaws 5 and the terminal connectors 83. It will be noted that in this position the insulating cover 23 is supported on the switch by means of the prongs 26 on the resilient strips 25 engaging in the hollow rivets l5. With the switch in the off position, the screws 24 are loosened and the insulating cover swung to the open position of Figure 5, pivoting about the engagement of the prongs 26 in the rivets l5. After whatever manipulation or inspection of the jaws 5 and connectors 8 has been accomplished, the cover 23 is swung back counterclockwise into the position of Figure 3 and the studs retightened to place the switch again in operative condition.
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 is claimed is:
1. An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade-members, said blade members pivotally mounted on said base adjacent to the end of one leg and having their other leg cooperating with a stationary contact, an insulating cover mounted over the stationary contacts and terminals, said insulating cover having slots therethrough through which the blade members travel to contact the stationary contacts, and means pivotally mounting said cover at the pivotal mounting of said blade members so that it will swing to uncover the contacts and terminals While remaining supported at said pivotal mounting.
2. An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade members, said blade members pivotally mounted on the base adjacent the end of one leg with the end of its other leg cooperating with a stationary contact, operating means insulated from said blade members and operable upon said blade members to open and close said electrical switch, an insulating cover for said stationary contacts and terminals hinged at the pivotal mounting of said blade members and having slots therethrough through which said blade members travel, and magnetic blowout means mounted in said insulating cover for directing c.) an are which may be formed between said sta tionary contacts and said blade members away from said terminals and toward said insulating cover.
3. An electrical switch comprising in combination, an insulating base having cutout portions therein, stationary contacts and terminals mounted in said cutout portions, substantially Y-shaped blade members, said blade members pivotally mounted on the base adjacent the end of one leg and engaging said stationary contacts adjacent the end of the other leg, a bail member insulated from and operative upon said blade members to join said blade members for unitary operation, and an insulating cover for said insulating base hinged to the point of pivotal mounting of said blade members and having slots therethrough through which said contact legs of said blade members travel.
4. An electrical switch comprising in combination, an insulating bas having a plurality of cutout portions therein, stationary contacts and terminals mounted in each of said cutout port s, substantially Y-shaped blade members, said class members pivotally mounted on the base adjacent the end or one leg and engageable with said stationary contacts adjacent the end or the leg, an operating bail member insulated. ire-m ard operative upon said blade members to join blade members for unitary operation, an in lating cover plate hinged to the pivotal mo ing of the said blade members, said insul cover plate having slots therethrough thr which the blade members travel to engage sad stationary contacts, and U-shaped m ti le arc suppressor members mounted on s. ing cover plate around said slots with is directed toward the pivotal mounting of members.
5. An electrical switch comprising in tion, an insulating base, stationary contacts terminals mounted on said base, substant' .11 7 r'-- shaped blade members each pivotally mounted on the base adjacent the end of one leg and having its other leg cooperating with a stationary contact, insulating cover, resilient in hers in said insulating cover, said in ulating cover hinged to the pivotal mountings of said blade members by means of said resilient spring members, said cover covering said stationary contacts and terminals, and having slots therethrough through which the blade members travel to engage said stationary contacts.
6. An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, blade members cooperating with said stationary contact-s, stationary posts mounted on said base in line with said contacts and terminals, said blade members pivotally mounted to said stationary p. s by means of hollow rivets, an insulating cover .1: nber for said stationary contacts having mounted thereon resilient strips carrying pro s, silient strips pivotally mounting said in cover to said stationary posts by engagement said prongs in said hollow rivets, and operating means for engaging and disengaging blade members and said stationary contacts.
'7. An electric switch comp-rising in combination, an insulating base, stationary contacts and terminals mounted on said base, blade members, stationary hinge posts mounted on said base in line with said contacts, said blade members pivotally mounted to said stationary posts and cooperating with said stationary contacts, an insulating cover for said stationary contacts pivotally mounted to said stationary posts at the pivotal mounting of said blade members so as to swing to uncover the contacts and terminals while supported on said stationary post, and operating means for engaging and disengaging said blade members and said stationary contacts.
8. An electrical switch comprising in combination, an insulating base having a plurality of cutcnt portions therein providing unrestricted openings to the top of said insulating base, stationary contacts and terminals mounted in each of said cutout portions, substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the bas thereof, said blade members pivotally mounted to the base adjacent to the end of one leg and having their other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and interposing the end portions of the leg its-e11 in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an operating bail engaging said insulating bar providing a means for opening and closing said electrical switch, insulating cover for said insulating base having cutout portions therein providing unrestricted openings to the top of said insulating cover complementary with the cutout portions and openings in the insulating base, slots through said cover in line with said stationary contacts through which said blade members travel, and magnetizable, U-shaped, metallic plates mounted in the cutout portions of the cover with their legs embracing the path of movement of the blade members and pointing into said unrestricted openings in said insulating cover and their bights directed toward the pivotal mounting of the blade members.
9. An electrical switch comprising in combination, an insulating base having a plurality of cutcutout portions, substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the base thereof, said blade members pivotally mounted to the base adjacent to the end of one leg and having their other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and inter-posing the end portions of the leg itself in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an operating bail engaging said insulating bar and providing means for opening and closing said electrical switch, an insulating cover for said insulating base having cutout portions therein and an unrestricted opening to the top of said insulating cover complementary with said cutout portions and openings in said insulating base, a plurality of slots through said cover in line with said stationary contacts through which said blade members travel, means pivotally mounting said cover on said base, and magnetizable, U-shaped, metallic plates mounted in the cutout portions of the cover with their legs embracing the path of movement of said blade members and pointing L cutout portions therein, stationary contacts and terminals mounted in each of said cutout portions, substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the base thereof, said blade members pivotally mounted on the base adjacent to the end of one leg and having its other leg engaging the stationary contact along the longitudinal aXis of said other leg, an insulating bar joining said blade members for unitary operation by engagement in said recess in said blade members, an operating bail engaging said insulating bar and providing means for opening and closing said electrical switch, an insulating cover for said insulating base having cutout portions therein complementary with the cutout portions in said base, slots through said cover in line with said stationary contacts through which said switch blade members travel, means pivotally mounting said cover on the pivotal mounting of said blade members so that said cover will swing to uncover the contacts and terminals while supported on the base, and a plurality of magnetizable, U- shaped, metallic plates mounted in the cutout portions of the cover with their legs embracing the path of movement of said blade members and their bights directed toward the pivotal mounting of said blade members.
11. An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein providing unrestricted opening to the top of said insulating base, stationary contacts and terminals mounted in each of said cutout portions, a plurality of substantially Y-shaped blade members cooperating with said contacts, said blade members having a recess in the base thereof, said blade members pivotally mounted to the base adjacent the end of one leg and having its other leg entering the stationary contact at the end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contacts, an insulating crossbar joining said blade members for unitary operation by engagement in said recess in said blade members, an
operating bail engaging said insulating bar providing a means for opening and closing said electrical switch, an insulating cover for said insulating base having cutout portions therein and an unrestricted opening to the top complementary with said cutout portions and openings in said insulating base, a plurality of slots through said cover in line with said stationar contacts through which said blade members travel, and
means pivotally mounting said cover on the pivotal mounting of said blade members so that said cover may swing to uncover the contacts and terminals while supported on said pivotal mounting, magnetizable, U-shaped, metallic plates mounted in the cutout portions of said insulating cover with their legs embracing the path of movement of the switch blades and pointing into said unrestricted opening and with their bights directed toward the pivotal mounting of the switch blade.
12. An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, substantially Y-shaped blade members cooperating with said stationary contacts, stationary hinge jaws mounted on said base, said blade members pivotally mounted to said hinge jaws by means of hollow rivets, an insulating cover member for said stationary contacts, resilient strips carrying prongs mounted to said cover member, said insulating cover pivotally mounted to said hinge jaws by means of said resilient strips engaging said hollow' rivets whereby the insulating cover may be swung to uncover the contacts and terminals, and means for operating said blade members into and out of engagement with said stationary contacts.
13. An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein, stationary contacts and terminals mounted in each of said cutout portions, stationary hinge jaws in line with said stationary contacts, a plurality of substantially Y-shaped blade members, said blade members pivotally mounted on said stationary hinge jaws by means of a hollow rivet through said hinge jaw and one leg of said blade member, the other leg of said blade member engaging the stationary contact along its longitudinal axis, an insulating cover for said insulating base, resilient strips carrying prongs mounted on said insulating cover, said prongs engaging said hollow rivets so that said insulating cover may be swung to uncover the contacts and terminals and may be bodily removed by disengagement of said prongs and said hollow rivets, slots through said insulating cover in line with said stationary contacts through which said blade members travel, a plurality of 'U -shaped, metallic plates mounted in said insulating cover with their legs embracing the path of movement of said blade members and their bights directed toward the pivotal mounting of said blade members.
14. An electrical switch comprising in combination, an insulating base, stationary contacts and terminals mounted on said base, stationary hinge jaws mounted on said base in line with said stationary contacts and terminals, substantially Y-shaped blade members cooperating with a stationary contact and pivotally mounted to said stationary hinge jaws by means of hollow rivets, an insulating cover member for said stationary contacts, resilient strips carrying prongs mounted on said insulating cover, said insulating cover pivotally mounted to said hinge jaws by means of said resilient strips carrying prongs engaging said hollow rivets so that said insulating cover may be swung to uncover the contacts and terminals and may be bodily removed by disengagement of the prongs and the hollow rivets.
15. An electrical switch comprising in combination, an insulating base, a plurality of stationary contact jaws and terminals mounted on said base, a plurality of substantially Y-shaped blade members cooperating with said stationary contact jaws, said blade members having recesses in the base legs thereof, each of said blade members being pivotally mounted on the base adjacent to the end of one open leg and having its other open leg entering the contact jaw along its longitudinal axis and at its end edge as distinguished from the side edge thereof, and interposing the end portions of the leg itself in engagement with the stationary contact jaw.
16. An electrical switch comprising in combination, an insulating base, a plurality of station: ary contact jaws and terminals mounted on said insulating base, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its r p leg ing the stationary contact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contact jaw, an insulating bar joining said blade members for unitary operation by engagement in said recesses in said blade members, and an operating bail engaging said insulating bar and providing means for opening and closing said electric switch.
17. An electrical switch comprising in combination, an insulating base, a plurality of sta tionary contact jaws and terminals mounted on said insulating base, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its other open leg engaging the stationary con tact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portions of the leg itself in engagement with the stationary contact jaw, an insulating bar joining said blade members for unitary operation by engagement in said recesses in said blade members, an operating bail engaging said insulating bar and providing means for opening and closing said electric switch, and an insulating cover in front of said stationary contact jaws and having slots therethrough in line with the stationary contact jaws through which said other open legs of the blade members travel in engaging and disengaging the contact jaws.
18. An electrical switch comprising in combination, an insulating base having a plurality of cutout portions therein, a plurality of stationary contact jaws and terminals mounted in each of said cutout portions, a plurality of substantially Y-shaped blade members cooperating with said contact jaws, said blade members having recesses in the base legs thereof, each of said switch blade members being pivotally mounted on the base adjacent to the end of an open leg and having its other open leg engaging a stationary contact jaw along the longitudinal axis of said leg and at its end edge as distinguished from the side edge thereof and interposing the end portion of the leg itself in engagement with the stationary contact jaw, means joining said blade members for unitary operation into and out of engagement with the contact jaw to perform the switching operation, and an insulating cover for said insulating base having cutout portions therein complementary with the cutout portions in said base, said cover having slots therethrough in line with said stationary contacts through which said other open legs of said blade members travel as they engage and disengage the stationary contact Jaws.
19. In an electrical switch, an insulating base, a plurality of stationary contact jaws and terminals mounted upon said base, a plurality of conducting blade members cooperating with said stationary contact jaws, said blade members being pivotally mounted on the base for rotative movement into and out of engagement with the stationary contact jaws, the contact engaging portions of the blade members being constituted by legs disposed to enter the contact jaws along the longitudinal axis of the legs and at their end edges as distinguished from the side edges thereof, means for rotating said blade members as distinguished into and out of engagement with the contact jaws to eifect the switching operation, and an insulating cover in front of said stationary contact jaws and cooperating with the insulating base to form individual chambers about the jaws, said cover having slots therethrough, major with respect to the front wall and minor with respect to the bottom wall, through which the legs of the blade members pass in engaging and disengaging the contacts.
20. In an electrical switch, an insulating base, a plurality of stationary contact jaws and terminals mounted on said base, a plurality of conducting blade members pivotally mounted on said base for rotative movement into and out of engagement with the stationary contact jaws, each of said blade members having one portion remote from said stationary contact jaws provided with a pivotal mounting at its end and a contact portion remote from said pivot end disposed at a substantial angle to said one portion and entering the stationary contact jaws along the longitudinal aXis of the contact portion and at its end edge from the side edge thereof, an insulating cover cooperating with the insulating base to form individual contact chambers about said contact jaws, said insulating cover having slots therein, major with respect to the front wall thereof and minor with respect to the bottom wall, the contact portions of said blade members passing through said slots with the longitudinal axes of the contact portions substantially at right angles to the front wall of the insulating cover, and means joining said blade members for common movement as a unit into and out of engagement with the stationary contact jaws to perform the switching operation.
21. In an electric switch, an insulating base, a plurality of stationary contact jaws and terminals mounted on said base, a plurality of conducting blade members pivotally mounted on the base for rotative movement into and out of engagement with the stationary contact jaws, each of said blade members having one portion remote from said stationary contact jaws provided with a pivotal mounting at its end and a contact portion remote from said pivot and disposed at a substantial angle to said one portion and entering the stationary contact jaws along the longitudinal axis of the contact portion and at its end edge as distinguished from the side edge thereof, extending portions on said blade members substantially in line with the contact portions thereof, recesses in said extending portions, insulating means engaged in said recesses to join said blades for common movement, and an operating bail engaging said insulating means to effect operation of the blades to perform the switching operation.
RALPH H. KINGDON.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,208,559 Horn Dec. 12, 1916 1,795,641 Dante Mar. 10, 1931 1,993,273 Hammerly Mar. 5, 1935 2,098,578 Hammerly Nov. 9, 1937 2,268,336 Jackson et al Dec. 30, 1941 2,349,681 Slepian May 23, 1944 2,570,610 Taylor Oct. 9, 1951 2,604,563 Jansson July 22, 1952
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US173820A US2654011A (en) | 1950-07-14 | 1950-07-14 | Electric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US173820A US2654011A (en) | 1950-07-14 | 1950-07-14 | Electric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2654011A true US2654011A (en) | 1953-09-29 |
Family
ID=22633635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US173820A Expired - Lifetime US2654011A (en) | 1950-07-14 | 1950-07-14 | Electric switch |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2654011A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2931879A (en) * | 1957-08-29 | 1960-04-05 | Milbank Mfg Co Inc | Mounting structure for electrical instruments having blade terminals |
| US3035140A (en) * | 1959-07-08 | 1962-05-15 | Arrow Hart & Hegeman Electric | Arc hood supporting means for electric switches |
| US3056009A (en) * | 1959-06-30 | 1962-09-25 | Westinghouse Electric Corp | Electric-switch construction |
| US3278710A (en) * | 1964-03-13 | 1966-10-11 | Westinghouse Electric Corp | Circuit interrupting device with a movable arc-hood |
| US4965414A (en) * | 1989-03-31 | 1990-10-23 | Cooper Industries, Inc. | Circuit breaker and reset mechanisms operated through the body |
| US20130015940A1 (en) * | 2011-01-19 | 2013-01-17 | Jessica Ann Dunker | Disconnect switch including fusible switching disconnect modules |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1208559A (en) * | 1916-04-22 | 1916-12-12 | Frederick William Horn | Guard for electric switches. |
| US1795641A (en) * | 1929-01-22 | 1931-03-10 | Trumbull Vanderpoel Electric M | Switch-contact-arc reducer |
| US1993273A (en) * | 1930-12-30 | 1935-03-05 | Trumbull Electric Mfg Co | Electric switch |
| US2098578A (en) * | 1936-11-13 | 1937-11-09 | Trumbull Electric Mfg Co | Safety switch |
| US2268336A (en) * | 1935-03-25 | 1941-12-30 | Square D Co | Circuit breaker |
| US2349681A (en) * | 1941-05-24 | 1944-05-23 | Westinghouse Electric & Mfg Co | Circuit interrupter |
| US2570610A (en) * | 1947-08-23 | 1951-10-09 | Allis Chalmers Mfg Co | Gas blast circuit breaker with trap for products of arcing |
| US2604563A (en) * | 1949-10-03 | 1952-07-22 | Allis Chalmers Mfg Co | Circuit breaker employing high and low intensity gas blast |
-
1950
- 1950-07-14 US US173820A patent/US2654011A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1208559A (en) * | 1916-04-22 | 1916-12-12 | Frederick William Horn | Guard for electric switches. |
| US1795641A (en) * | 1929-01-22 | 1931-03-10 | Trumbull Vanderpoel Electric M | Switch-contact-arc reducer |
| US1993273A (en) * | 1930-12-30 | 1935-03-05 | Trumbull Electric Mfg Co | Electric switch |
| US2268336A (en) * | 1935-03-25 | 1941-12-30 | Square D Co | Circuit breaker |
| US2098578A (en) * | 1936-11-13 | 1937-11-09 | Trumbull Electric Mfg Co | Safety switch |
| US2349681A (en) * | 1941-05-24 | 1944-05-23 | Westinghouse Electric & Mfg Co | Circuit interrupter |
| US2570610A (en) * | 1947-08-23 | 1951-10-09 | Allis Chalmers Mfg Co | Gas blast circuit breaker with trap for products of arcing |
| US2604563A (en) * | 1949-10-03 | 1952-07-22 | Allis Chalmers Mfg Co | Circuit breaker employing high and low intensity gas blast |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2931879A (en) * | 1957-08-29 | 1960-04-05 | Milbank Mfg Co Inc | Mounting structure for electrical instruments having blade terminals |
| US3056009A (en) * | 1959-06-30 | 1962-09-25 | Westinghouse Electric Corp | Electric-switch construction |
| US3035140A (en) * | 1959-07-08 | 1962-05-15 | Arrow Hart & Hegeman Electric | Arc hood supporting means for electric switches |
| US3278710A (en) * | 1964-03-13 | 1966-10-11 | Westinghouse Electric Corp | Circuit interrupting device with a movable arc-hood |
| US4965414A (en) * | 1989-03-31 | 1990-10-23 | Cooper Industries, Inc. | Circuit breaker and reset mechanisms operated through the body |
| US20130015940A1 (en) * | 2011-01-19 | 2013-01-17 | Jessica Ann Dunker | Disconnect switch including fusible switching disconnect modules |
| US9224548B2 (en) * | 2011-01-19 | 2015-12-29 | Cooper Technologies Company | Disconnect switch including fusible switching disconnect modules |
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