Патент USA US2104914код для вставки
Jan. 11, 1938. 2,104,914 R. TEMPLE, JR CIRCUIT BREAKER '2 Sheets-Sheet 1 Original Filed April 24, 1933 l - n“ r .07 M/ my n.“J K ?/H/ 9//RQ/ 6/ 6. Jz a / 16 m/£40 .4 24 54FJAO H.% / 15 ROBERT TEMPLE JR. INVENTOR. 4“ ATTORNEY. Jan. 11, 1938. R, TEMPLE, JR 2,104,914. 4 CIRCUIT BREAKER Original 0 101 1 0102 96 7,? Filed April 24, 1933 ' r1 9.; 75 a1 84 87 a0 ~97 6’? 83 __ o 2 Sheets-Sheet 2 90 O ,1 I‘ . r ‘91 ‘ "é O Y . 5% ' III 0 |"" I"! 73 l 79 I w, |l" 10.5 107 - H 106 I ROBERT TEMPLEJR. INV NTOR. BY 1 ' A‘? ATTORNEY. Patented Jan. 11, 1938 i _ I i i _ UNITED ' STATES‘ ' PATENT OFFICE 2,104,914 onwurr BREAKER ' < nobei-t Temple, .In, Brooklyn, N. Y. Original application April 24, 1933, Serial No. 667,686, now Patent No.‘ 2,017,329, dated Octo ber 15, 1935. Divided and this application 00 tober 14, 1935, Serial No. 44,903 12 Claims. (Cl. 200-150) This invention relates to circuit breakers and being provided with ?anges I9 to insure a more constitutes a division of my cop'ending applica- ?rm engagement with the member 20. The tion on explosively actuated devices, Ser. No. 667,- plunger 24 is slidably mounted within a barrel 26 v‘ 686, ?led April 24, 1933 now Patent No. 2,017,329, ~ having a longitudinal aperture 21, the barrel be 5 issued October 15, 1935. ing positioned in spaced relation to the base by 5 The invention is more particularly directed to an oil circuit breaker, employing an explosive means of a supporting member 23, said support ing member having an upper clamping portion charge to actuate the same. The present circuit 23'. When the circuit breaker is ina closed posi breaker is adapted both for high and low current’ tion, as illustrated in Fig. 1, the inner end of the ’ circuits and is so constructed that the circuit may. plunger 24 abuts against a shoulder- 29 in vthe 10 be opened either when an overload occurs, or at barrel. . any other desired time, without producing an arc. Adlaeent t0 the Shoulder 29, the aperture in A large number of oil and other circuit opening ‘ the'bal‘l‘el is formed with a. l‘edlieed portion 3| _ devices have been produced, but these for the Within which the'fOl‘Ward end 01 aseeend plunger 1" most part are rather complicated and exceedingly 32 is positioned when. the circuit breaker is in a 15 expensive devices. The present invention may or closed position An on Port (Ir-inlet 33 is formed may not be immersed within an oil bath and the device is constructed in such a manner as to open the circuit in a way that no appreciable or con-20 tinued arc can occur between the contact points. in the barrel at a point adjacent to the forward end 01' the plunger 32 when the veil‘euit breaker is in a Closed DOSiti0n- The Oil inlet leads to an oil reservoir 34 and so long as the plunger 32 is Anotheroblect of the invention is the provision of an explosively actuated circuit breaker, the in the position ShOW?' in F181" -1, .the chambers 20 within the plunger 24 and the .move’eble contact - operation of which is so positive that the circuit members are completely ?lled with .joil- At the will be broken even though the overload has been reel‘ end 01' the plunger a hollow piston-‘35 is per ‘ 25 so great as to fuse the contact points together. manently secured, the piston closely '?ttinc en In the drawings, Fig, 1 is a, broken top plan I enlarged portion 33 of the aperture in the barrel. view of the preferred embodiment of the inven- In order to insure a close fit between the Piston tion, the view being largely in section; - Fig. 2 is a broken side elevation thereof; and the barrel, said piston is provided with a . _ plurality of Spaced piston rings 38. When the 30 .Fig. 3 is a broken top plan view, largely in sec- detonation takes place, as hereinafter described, 30 _ tion, of a modi?ed form of the invention; and the piston and the plunger 32 move forward. and, = Fig. 4 is abroken side elevation thereof, in order to return the piston thereafter to its The preferred embodiment of the invention 11- I normal Position. a 0011 Compression Spring 39 is , lustrated in Figs. 1 and 2 is mounted on a, base positioned between the forward end of the piston 3” Ill and includes a pair of stationary contact mem- end a Shoulder "- Inesmueh as the area, Within 35 bers II and I2, which are mounted in spaced relation to the base by means of supporting members I3 and I 4. ,Each stationary contact mem~ ber is formed with a longitudinal aperture l5 40 extending inwardly from its outer end, the outer the aperture 30 is closed. theforwal‘d moving, Piston 35 OOmDI‘eSSeS the ail‘ therein which forms a cushion to prevent the piston from striking the shoulder 40 too severely. In order to reduce the compression, however, air outlet ports 4| are 40 end of said apertures being outwardly ?ared, as formed in the portion of the barrel adjacent to indicated at l6. -In order to make a more ?rm ' contact between the stationary and the moveable the shoulder 40. ' The rear end of the barrel is provided with an r contact members, the apertures are provided with enlarged breech portion 42 and is supported in 4" a plurality of annular recesses l1 in which com- spaced relation to the base by means of a bracket pression rings l8 are ?tted. The moveable contact -member 20 is substantially U~shaped and is formed with a longitudinal aperture 2| extending from end to end. The 43 having a clamping portion 44. The rear- end of the apertue 36 in the barrel is threaded, as at 45', to receive a breeching element 48 having a longitudinal aperture 4'! to receive a blank car terminals of the moveable contact member are tridge' 43. " tapered, as shown at 22, in order to facilitate their admission into the aperture. The moveable. ‘contact member is carried by a hollow plunger 24, having a longitudinal aperture 25 which cominunicates with the aperture 2|, the plunger also ' _ 5o When an overload in the circuit occurs, the - cartridge is detonated in the following manner A breech block 49 having a reduced threaded for ward portion 50; is ?tted within a threaded aper ture at the rear end of the ‘breeching element. . 2 2,104,914 A ?ring pin 52 is mounted within a longitudinal aperture 53 in the breech block. Thus, when it is desired to actuate the circuit breaker, the fir ing pin is caused to strike the cartridge by a 94 is provided with a plurality of spaced contact rings 95 and normally resides at a point substan tially half-way within the aperture 13 in the barrel, this plunger being supported for longi tudinal movement in a supporting member 96 suitable mechanical‘ or electrical means. This ‘ having an aperture 91 therein. causes the explosive gases to act upon the piston, $1 The moveable member is further provided with a sec thereby driving the plunger 32 forward, the initial contact set of contact rings 98, which are adjacent movement thereof closing the oil port. Further ond movement of the piston 32 places the oil under to the aperture 91 when the circuit breaker is in 10 a closed position. The closed cylinder I00, the re 10 an exceedingly high pressure which reacts against duced portion ml of the moveable contact mem the inner ends 55 and 56 of the apertures i5 in the stationary contact members, thereby causing ber, the piston I02, and the buffer I03, are sim the moveable contact member to travel inthe ilar to that shown in the preferred embodiment‘. direction of movement of the plunger 32. Move I Likewise, the circuit breaker is adapted to be re set by actuating the lever IM which is pivotally 15 ment, of course, proceeds after the oil begins to escape and as this movement continues at an exceedingly high velocity, and the oil, which is under a continuously increasing pressure, is forcibly moved outwardly in the annular area 20 between the stationary and moveable contact members. The oil is under a su?iciently high pressure and velocity to prevent the formation of a vacuum and any appreciable or continued arc as well. mounted to the base at I05. The screw I05 may serve as the terminal for the ?xed contact and the screw. I01 for the moveable one. Although not shown in the drawings, each of the embodiments of the present invention may, if desired, be immersed in oil. This is not essen tial for the successful operation of the device, however, since the oil is forced outwardly be tween'the ?xed and moveable contact members at In order to limit the outward movement of the ‘such a velocity and pressure as to quench any arc that may beformed. moveable contact member, the plunger 25 is pro What I claim is:— vided at its forward end with an integrally formed 1. A circuit breaker comprising stationary and solid rod 58, having a reduced portion 59 at its forward end. The rod passes through a closed moveable contact members, the latter having a ?uid ?lled chamber, a piston free for movement 3' 30 cylinder 60, the cylinder having two or more op posed ports 6! adjacent to its forward end, the independent of the movable ‘contact member cylinder being suitably supported on a port 62. adapted to compress the ?uid and thereby actu The reduced portion of the rod carries a piston 63 ate the moveable contact member and explosively which compresses the air within the cylinder after actuated means for moving the piston. 25 35 said piston has passed the ports 6 I, thereby form 2. In a circuit breaker, the combination of a : ?xed contact member and a moveable contact ing an air cushion at the forward end of the cyl inder. In some instances, it may be desirable to member having a ?uid ?lled chamber therein, place a resilient gasket 64 at the forward end. communicating with the ?xed contact member, a When the circuit breaker is actuated, the move— plunger free for movement independent, of- the able contact member has moved forward to the movable contact member adapted to compress the 40 position shown in the broken lines in Fig. 1. It ?uid and thereby actuate the moveable contact may then be returned to its closed position by I member and explosively actuated means for mov ' manipulation of the lever 65, which is pivotaliy ing the plunger. 3. In an explosively actuated circuit breaker, mounted on the base at 66. 45 The modi?ed embodiment of the invention a pair of apertured stationary contact members, shown in Figs. 3 and 4, is similar to the preferred a U shaped hollow moveable contact member, the ends of which pass into the stationary contact embodiment of the invention except that it is pro vided with only a single moveable contact member members, a hollow . plunger carrying said U rather than a double one, as in the preferred em- , shaped contact member, a ?uid carried within 50 bodiment. In this instance, the barrel 18 is said hollow member, an explosively actuated pis 50 mounted in spaced relation to the base ‘H by ton associated within said hollow plunger, where means of a supporting element ‘I2 which is secured by, when the piston is actuated, the moveable contact member will pass from the stationary to the base and is provided with a clamping por tion ‘I2’. The barrel is formed with a longitudinal contact members and the ?uid will be expelled aperture ‘I3 having an outwardly ?ared portion under pressure. 55 ‘I4 at its forward end. Substantially midway be 4. A circuit breaker comprising a hollow cylin tween the ends of the barrel an oil inlet port 15 drical contact member, a funnel-shaped guide integral with one end of the cylindrical contact is positioned, this inlet leading to the oil reser voir ‘I6. Adjacent‘ to the oil port, the barrel is member, a second contact member normally po (ii) sitioned in'the ?rst-named member and in elec formed with an enlarged portion 18 and the aper 60 ture 19 in this portion is correspondingly enlarged. trical contact therewith, means de?ning a cham The plunger 80 is similar to that shown in the ber in communication with the hollow cylindri cal portion of the ?rst contact member, electri preferred embodiment and likewise carries a hoi low piston 82 at its rear end, the piston having cal insulating liquid in the chamber, a piston 65 a plurality of piston rings 83. This portion of movable into engagement with the ?uid in the 65 the barrel is also supported in spaced relation to chamber, explosive means for moving the piston, the base on a supporting element 84 having an pneumatic and metal spring means for damping upper clamp 85. The breeching element 81 is the movement of the piston, . and pneumatic screw threaded into an enlarged portion 88 in means for damping the movement of the contact members apart as a result of the movement of the rear end of the barrel, this breaching-ele ment having a longitudinal aperture 88 in which the piston, said insulating ?uid being forced the cartridge 9|) is positioned. The breech block rapidly between the contact members by the pis SI and ?ring pin 92 are similar to that shown in ton as the members are moved apart. 5. A circuit breaker comprising a hollow cylin the preferred embodiment. 75 The rear end of the moveable contact member drical contact member, a second contact member 3 2,104,914 normally positioned in the ?rst-named member and explosive means for- moving the contacts, and in electrical contact therewith, means de?n ing a chamber in communication with the hollow apart and simultaneously forcing insulating liq _ cylindrical portion of the ?rst contact member, in electrical insulating liquid in the chamber, a pis ton movable into engagement with the ?uid in the chamber, explosive means for moving the pis ton, means for damping the movement of the pis ' ton, and means for damping the movement of the 10 contact members apart as a result of the move— ment of the piston, said insulating ?uid being forced rapidly between the contact members by‘ the piston as the members are moved apart. 6. A circuit breaker comprising a hollow cy 15 lindrical contact member, a second contact member normally positioned in the ?rst-named member and in electrical contact therewith, means de?ning a chamber in communication with the hollow cylindrical portion of the first con 20 tact member, electrical insulating liquid in the chamber, a piston movable into engagement with the ?uid in the chamber, and explosive means for moving the piston, said insulating ?uid being forced rapidly between’the contact members by 25 the piston as the members are moved apart. 7. A circuit breaker comprising a hollow cylin drical contact member, a second contact member normally positioned in the ?rst-named member and in electrical contact therewith, means de ?ning a chamber in communication with the hol low cylindrical portion of the ?rst contact mem ber, electrical insulating liquid in the chamber, a piston movable into engagement with the ?uid in the chamber, explosive means for moving the piston, means for damping the movement of the piston, and means for damping the move ment of the contact members apart as a result of the movement of the piston. - 8. A circuit breaker comprising in combina uid in considerable quantities and at explosive pressures between the contacts; I 9. A circuit breaker comprising in combina tion, a pair of engaging electrical contacts, means mounting the contacts for relativemovement, means for moving the contacts apart and simul taneously forcing insulating liquid in consider able quantities and at relatively high pressures 10 between the contacts, means for damping move ment of the contact-moving means, and means for damping‘relative movement of the contacts. 10. In combination, a cup-shaped member, a hollow rod slidably‘ received in ?uid-tight re lation in the member, ?uid carried in the hollow rod, a piston movable into compressing relation with the ?uid to thereby forcibly eject the rod from the cup, and explosive means for movingthe piston. 20 11. In combination, a pair of spaced contacts, means bridging and electrically connecting the contacts, and ?uid-pressure means adapted on electrical overload to apply ?uid-pressure forces through an insulating liquid directly between 25' each contact and the portion of the bridging means engaging therewith to positively move the bridging means away from each contact while rapidly discharging the liquid between each con tact and its associated portion of the bridging 30 means. 12. In combination, a pair of spaced contacts, means bridging and electrically connecting the ~ contacts, and ?uid-pressure means adapted on electrical overload to apply ?uid-pressure forces through an ‘insulating liquid directly between each contact and the portion of the bridging means engaging therewith to positively move the bridging means away from each contact. 40 tion, a pair of engaging electrical contacts, means mounting the contacts for relative movement, ROBERT TEMPLE, JR.