US1272279A - Circuit-interrupting device. - Google Patents

Description

A. E. LUNDELLA CIRCUIT INTERRUPTING DEVICE- APPLICATION FILED AUGJB; I916. i ,Q'YQJZ FQ; Patented July 9,1918. Fm

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35 in which they are interconnected. In Fig.

- UNITED snares PATENT OFFICE.

ALBEN E. LUNDELL, 03. NEW 'YGBK, N. 'Y., ASSIG-NOR TO WESTERN ELECTRIC COMPANY, INCORPORATED, 015 NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CIECUIT-INTERRUPTING DEVICE.

I To all whom it may concern:

Be it known that I, ALBEN E. LUNDELL,

a citizen of the United States, residing at ing mechanism fails for any reason, the re-' sultant stopping of the interrupter may cause more or less serlous diiiiculties to arise in the system in which it is used.

connection of individually driven. inter- It is the object of this invention to employ a plurality of interrupters of :sucln characteristics and so connected that interruptions of the circuit of which they are a part .will continue to take place, eventhough one or more of such interrupters should be disabled.

A feature of this invention is the series rupters which have such characteristics that impulses may be sent while any or all such "interrupter-s are inoperation.

It is thought'that the 'nvention will be 4 best understood from the ollowing detailed description, reference being had to the accompanying drawings.

In the ,tlrawings, Figure 1 shows diagrammatically two interrupters and the manner 2 the successive positions assumed by the segments of both interrupters under their respective brushes at various time intervals are diagrammatically indicated.

In Fig. 1 are shown two interrupters I, II. Interrupter I consists of a brush 20 arranged to be driven by a shaft 21 over segments of conducting material 22, 23, 24, 25 26 and 27 such conducting segments being separated by suitable insulatingpon tions 28. Brush 20 is suffi iently wide to make contact across adjacent segments when passing insulating portions 28. Conductor 29' is multipled to segments 22, 24 and 26 as shown in Fig. 1, it being extended to interrupter II by conductor 30. Conductor 31 is multipled to conducting segments 23, 25 and 27, it being extended to interrupter H by conductor 32.

Specification of Letters Patent.

Application filed August 16, 1916. Serial No. 115,211.

The general structure of interrupter IT is similar to that of interrupter I. A brilsh 33 carried 'by the shaft 3% is arranged to swing over conducting segments 35, 36, 37 and 38, such conducting segments being separated by insulation, as indicated at 39. Conducting segments 35- and 37 are connected to a common conductor 40 having a con nection to conductor 32, while conducting -- segments 36 and 38 are connected to a com mon conductor 41 having a connection to common conductor 30.. An incoming portion of the circuit to beinterrupted is shown at 42 and is in electrical connection. with brush 20,-the outgoing end of suchcircuit being indicated by conductor 43, which is in electrical connection with brush 33. Shafts The shaft 21 on which bluish 20 is mounted v is provided with a collar 50 to which is secured at flexible spider 51 carrying'adisk,-

of magnetic material 52. A constantlyv r0- tating power shaft 53 is driven in'any de-' sired manner and carries a' disk 54 rigidly secured thereto. An electromagnet 55 .is

positioned in operative relation to the disk I 52, the arrangement being such. that upon energization of magnet 55 disk 52 will be magnetically attracted, and dueto the resiliency of the spider 51 will be forced into engagement with the rotating disk inember I 54, with theresult that rotati'on'of the shaft 21 may be accomplished. Rigidl y secured to the collar 50 is a'disk 56, the periphery of this disk being provided with. a sinuous track portion 57 in which a roller 58 travels. The roller 58 is carried by a spring member 59 which is rigidly secured to the frame of the device in any desired manner; The purpose of roller 58 is to prevent the interrupter from sto 1n in an undesired osition as I D I 1 for instance, with the brush 20 spanning two adjacent conducting portions. The pressure on roller 58 bymeans of the spring.

member 59 is suiilcient to cause the spring member to force the-shaft 21 to be rotated until the roller restsin a depression in the track 57. The track 57 is arranged insuch a way that at the time brush 20 is spanning two adjacent segments, the roller 58 will justhavingpass ed or will just be approachihg a peak of trams-1:57: is obvious that if the magnet 55 is denergized at a'time when the brush 20 is spanning two segments, the pressure of roller 58 will cause the brush to be advanced sufficiently either in a counter-cloclqwise or a clockwise direction to insure that the'brush no longer spans both segments.

In order to more clearly understand the description, it will be assumed that it requires two-tenths of a second for brush 20 to pass over segments 22, 24 and 26, and SIX- tenths of a second for brush 20 to pass over segments 23, 25 and 27. The spacing of.

the segments in interrupter II is such that it will require two-tenths of a second for brush 33 to swing over segments 35 and 37, and one second for it to pass over segments 36 'and'38. It will be noticed that in each interrupter-s is shown in Fig. 1 and that they start together to revolve at approxi-' mately the same speed, impulses may be sent at the following times: lrVhen brush 20 is spanning both segments 22 and 23 and brush 33 is spanning segments 35 and-36, circuit will be completed from condutor 42, brush 20, segment 22, conductors 29, 30, 41, segment 36, brush 33', to conductor 43. No

' impulses will now be sent until brush 20 arrives on segment 24, at which time'a circuit Wlll be completed from conductor 42,

brush 20, segment 24, conductors 29, 30, 41,

segment 36, brush 33, to conductor 43. When brush 33 engages segment 37, a circuit will again be completed from conductor 42, brush 20 now on segment 25, conductors 31, 32, 40, segment 37, brush 33, to conductor 43. When brush 20 arrives on conductor 26, a circuit will be completed from conductor 42, brush 20, segment 26, conductors 29, 30, 41, segment 38 and brush'33, to conductor 43. \Vhen brush 2O spans conductors 27, and 22, brush 33 will be spanning segments 38 and 35, and a circuit will be completed from conductor 42, brush 20, segment 27, conductors 31, 32, 40, segment 35 and brush 33, to conductor 43. When the brushes are prevented from stopping in Let us assume now that interrupter I is disabled and ceases rotation, it being further assumed that the brush 20 remains in posi-' tion over one of the segments 22, 24 and 26. A circuit closure will now be made whenever brush 33 engages either segment 36 or 38. If brush 20 had stopped on one of the segments 23, or 27, a circuit closure would have taken place every time brush 33 passed over segments 35 and 37. It the brush 20 should stop so as to make contact across two segments normally insulated from each other, interruptions would not take place. I-lowevcr,-the mechanical means used in connection with the interrupters prevents the stopping of the brush in this particular position.

It, now, brush 33 should stop on either segment 35 or 37, circuit would be closed from conductor 42 to conductor 43 each time brush 2O engaged one of segments 23, 25, 27. If brush 33 should stop on one of segments 36 or 38, circuit would be closedfrom conductor 42 to conchu-tor 43 each time brush 20 engages a segment 22, 24, or 26. Brush 33 a position such that it would engage two conducting segments at the same time by mechanical means as above mentioned.

It isof course obvious that the particular time required for a brush to pass over segments, and the length of such segments is ing position be that assumed in the previous description, the condition assumed being merely one of a number of possible arrangements. Since, however, the general operation under all conditions would be similar to that previously described, further description of the operation of the device has not been considered necessary,

\Vhat is claimed is:

1. In an electrical system, a plurality of interrupting devices, a circuit including said interrupting devices, and means for establishing an interconnection between said interrupting devices such that said circuit will continue to be interrupted while any or all of said interrupting devices are in operation.

2. In an electrical system, a plurality of interrupting devices, a circuit includingsaid interrupting devices, driving mechanism individual to said interrupting devices, mechanical means for preventing said inter rupting'devices from stopping in certain po sitions, and means for establishing an interconnection between said interrupting devices such that said circuit will continue to be innot material to the invention, since many.

swing over a plurality of conducting segments, said conducting segments being of.

various lengths and separated by insulating segments, the conducting segments in the several interrupting devices being arranged to cause circuit closures varying in number and duration, and means for establishing an interconnection between the conducting segments of the several interrupters such that said circuit will continue to be interrupted and duration,

segments while passing while any or all of said interrupting devices are in operation.

4. In an electrical system; a plurality of interrupting devices, a circuit including said interrupting devices, each ofsaid interrupting devices comprising a brush arranged to swing over a, plurality of conductin segments, said conducting segments being of various lengths and separated by insulating segments, the conducting segments in the several interrupting devices being arranged to cause circuit closures varying in number said brushes being arranged to make. contact across adjacent conducting an insulating segeach 'of said interrupt-- ment, mechanical means for preventing said brush from stopping in engagement with two conducting segments} and 9 means for establishing an interconnection between said interrupting devices such that said circuit will continue to be or all of said interrupting devices are in operation.

5. In an electrical system, two interrupting devices, each of said interrupting devices comprising a brush arranged to swing over a plurality of conducting segments, said conducting segments bein of various lengths and separated by insu ating segments, the circuit closures caused by said interrupting devices when operating singly being of different characteristics, a circuit including said 'interruptin devices in series, I and means for estab ishing an interconnection between said interrupting devices such that said circuit will continue to be interrupted while any or all of said interrupting devices are in operation.

In witness whereof, I hereunto subscribe my name this 15th day of August, A. D., 1916.

ALBEN E. LUNDELL.

interrupted while any

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