US2049310A - Interrupter mounting - Google Patents

Description

. July 1936. M.- E. NULSEN ET AL 2,049,310

INTERRUPTER MOUNTI NG Filed June 14, 1955 2 Sheets-Sheet 1 ATTORNEY July 28, 1936. M. E, NULSEN ET AL INTERRUPTER MOUNTING 2 Sheets-Sheet 2 Filed June 14, 1955 ATTORNEY Patented July 2c, 1936 PATENT OFFICE a INTERRUPTEB, MOUNTING Marvin E.Nuiaen and In M. Slater, Indianapolis, Ind., aacignora toP. R. Mallory & Co., Inc., Indianapolis, 11111., a corporation of Delaware Application June 14, 1935, Serial No. 26,553

16 Claims.

This invention relates to interrupters and more particularly to means for determining the polarity oi the current supplied to or by them.

The invention is applicable, for example, to magnetic interrupters oi the type comprising a vibratory member having contacts rapidly opened and closed to interrupt the current in the power supply circuit for radio receivers and the like, the vibratory member being enclosed in a container provided with among base. These magnetic interrupter units for electrical circuits are adapted rapidly to make and break electrical circuits of potential changers such as the socalled B eliminators for automobile radio receivers.

An object of the invention is to improve the circuit connections for current interrupters.

Another object is to improve the means for determining the polarity of the current supplied to ther brought out and exemplified in the disciosure hereinafter set forth, including the illustrations in the drawings, the scope of theinvention being indicated in the appended claims.

For a. fuller understanding of the nature and objects of the invention as well as for specific Inilllment thereoi, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which;

Figure 1 shows the case of a magnetic interrupter device with connecting prongs thereon arranged according to the present invention;

Figure 2 shows a socket arrangement for receiving the end of said interrupter case and said Figure 3 shows interrupter circuits arranged according to one form of the invention;

Figure 4 shows parts of said circuits arranged according to a modified form of the invention;

Figure 5 illustrates a further modified form of the invention; V I

Figure 6 shows the invention applied to a modifled interrupter structure; and

Figure 7 shows a further modification of the form shown in Figure 6.

Like rei'erence characters indicate like parts in the several figures of the drawings.

While a preferred embodiment of the invention is described herein, it is contemplated that considerable variation may be made in the method or procedure and the construction of parts without departing from the spirit of the invention.

In the use of magnetic interrupters of. the above typeit is customaryto connect them into a circuit having a potential source, such as a battery for supplying the interrupter with current and transformer connections'for stepping up the voltage in the output circuit. In one kind of interrupter, known as the self-rectifying type, the interrupter is connected to the battery and to both the primary and secondary of the transformer, so that the low-potential, direct current supplied by the battery is supplied to an output circuit as high-potential direct current.

An important use for such devices and circuits is in automobile radio receiving sets. In

thiscase the low-potential current is drawn from the regular automobile battery-generator circuit and the high-potential current is supplied to the B supply circuit of the radio set.

Difiiculty and inconvenience has been experienced in practice, however, in obtaining the correct polarity of output at ail times. if the inter ruptcr has been improperly connected it has been necessary to go to such expedientsas reversing the connections oi the fred and green leads from the transformer or unsoldering and resoldering the socket connections. Furthermore, it has been necessary to provide separate connecting schemes for automobiles having the positive side of the battery grounded to the automobile frame and those having the negative side so grounded. Even with such careful attention as the radio mechanic is able to give to circuit polarities, mistakes resulting in vexatious delay and excessive labor have been frequent in the past. The present invention eliminates these difiiculties.

Figure 1 shows a magnetic interrupter unit en closed in a metal case to having a. metal cover I I through which projects a central terminal prong I! which may be electrically grounded to the case l0 and cover ll. Likewise rojecting through cover I i are three pairs of terminal prongs l3 and it, Hi and i6, l'l and I8. These are insulated from the case and cover but are connected to certain of the interrupter contacts as will be described. A suitable support for the prongs may be provided by riveting or pressing them into an insulating disc l9 inside the cover, holes being provided in the cover for each prong.

The lower end of the interrupter unit, including the prongs, is adapted to fit into the base or socket member 20 shown in Figure 2. Socket 211 is comprised of resilient flange or clip members 2! for holding the interrupter unit in place and individual terminal connectors or Jacks 22, 23 and 24,

' 25 and I8, 21 and 28 adapted to receive and form electrical connections for prongs l2, l3 and l4, l5 and i6, I7 and i8 respectively.

Prong i2 is preferably made longer than the rest of the prongs in the unit to aid in inserting the device into socket 20. Thus it is possible to insert prong i2 part way into receptive jack 22 and turn the unit about this as an axis until the proper prongs and jacks are brought into engagement after which the prongs may all be inserted completely into the jacks. According to a modification the prongs are all of the same length but a small table member is provided over jack 22 on the socket, this table member having a central hole leading to the jack. The same purpose is accomplished by this structure since prong l2 will be engaged before the rest of the prongs.

With the circuit connections completed to the prongs and jack members the circuits may appear as shown in Figure 3 in which is shown a top view of socket and a bottom view of cover H of the case it] with their connecting circuits shown diagrammatically.

The central prong i2 of the unit is connected not only to the case and cover but likewise to the vibrating reed member 32 in the unit and one end of electromagnet winding adapted to cause vibration of said reed 32. Prongs i3 and H are connected to contacts 33 and 34, respectively, which contacts co-operate with a double-faced contact on reed 32. Prongs l5 and i6 are connected to contacts and 36, respectively, which co-operate with another double-faced contact on reed 32. Prong i6 is also connected to the other end of electromagnet winding 30. Prongs l1 and i8 are not connected to any other members.

In the socket, jack 22 is connected to the ground side of battery 3| and of the high-potential output circuit 39. Jack 23 is connected to one end of secondary winding 38 of a step-up transformer and jack 24 is connected to the other end of said secondary winding 38. The center tap of winding 38 is connected to the nonground'ed side of high-potential output circuit 39. Jacks 25 and 28 are both connected to one end of primary winding 31 of the transformer and jacks 26 and 21 are both connected to the other end of said primary winding. Battery 3| is connected to the center tap of the primary.

With the circuit connections as shown in Figure 3 electromagnet 30 is energized frombattery 3| over the following circuit: Battery 3|, lefthand half of primary winding 31, jack 26, prong i6, winding of magnet 30, prong |2, jack 22 to battery 3i. The magnet attracts reed 32 thereby closing the reed contacts with contacts 34 and 36. The circuit closed through contact 36 short-circuits the winding 30. The circuit closed through contact 34 connects the right-hand half of the secondary wind'ng 38 in series with the output circuit 39 whereby the high voltage induced in this winding by the currents in primary 31 will be applied to the output circuit.

Upon short-circuiting of the magnet 30 the reed 32 springs back closing the reed contacts with contacts 33 and 35. Contact 35 connects the right-hand half of primary 31 in series with bat tery 3|, the circuit passing through prong l5 and jack 25. Contact 33 connects the left-hand half of the secondary in series with the output circuit 39 whereby the high voltage induced in said secondary is applied to the output circuit with the same polarity as before. As the vibration of the reed 32 continues the cycle is repeated. Thus it will be seen that a direct current of a has 6 jacks.

:grtain polarity is supplied to the output circuit Should it be found that these circuit connections supply the wrong polarity to output circuit 39, or should it be desired to use the unit in a circuit in which the opposite side of the battery is grounded, it is only necessary, with the present invention, to remove the unit from the socket 23 and rotate it 180 degrees after which it can be reinserted with prong l2 in jack 22, prong |3 in lo jack 24, prong H in jack 23, prong IS in Jack 23, prong i6in jack 21, prong H in jack 26, and prong l8 in jack 25. Since Jacks 25 and 23 are connected together as well as jacks 26 and 21 it will be observed that the circuit connections are the same except for the connections to the ends of secondary winding 33 which connections are reversed with respect to contacts 33 and 34. Thus it will be seen that the polarity of output will be reversed.

In Figures 4 to 7, inclusive, the circuit arrange ments shown above line A and below line B of Figure 3 are understood to be included.

In Figure 4 a modification is shown in which the connections of the primary winding are reversed upon removal and rotation of the unit instead of the secondary connections. This is made possible by connecting prongs i3 and H to contacts 35 and 36, respectively, and contacts l5 and I6 to contacts and 34, respectively. In addition, if desired, the prongs I5 and i3 may be connected together and similarly with the prongs i6 and ll instead of connecting the Jacks (as was shown in Figure 3).

In the modification shown in Figure 5 the center prong i2 has been omitted as have prongs l1 and I8 resulting in a 4-prong unit. The base 23 In this case the reed connections are made only to the case l0 and cover H which are connected to the ground side of the battery through metal socket 20. Otherwise the circuits may be the same as shown in Figure 3.

Figure 6 shows a modified form of unit 33 and base or socket structure 69, with parts broken away, and the circuits diagrammaticall illust ated. It will be seen that ii the unit prongs are inserted into their associated jacks as indi cated in this figure that the ends of the primary 31 of the transformer will be connected through prongs 65 and 66 to contacts 35 and 36 and the ends of secondary 33 will be connected through prongs 63 and 64 to contacts 33 and 34. The reed 32 is connected through the case and base 53 to battery ground. If the polarity should be desired tobe reversed it is only necessary to remove unit 66 from base 69, rotate it 180 degrees and re-insert it. The circuit connections between secondary 36 and contacts 33 and 34 will remain the same due to the cross-over connection oi the sockets tor prongs 63, 64 and 61, II the last mentioned pair of prongs being not connected. However, the connections of primary 3'! to contacts 35 and 36 will be reversed due to the reversal of prongs and 66 with respect to their jacks resulting in a reversal of the output polarity. 1

Figure '7, is similar in general, to Figure 6, the primary 3! being connected, in the position shown, through prongs l5 and 16 to contacts 35 and 33, and the secondary 38 being connected through prongs l3 and 14 to contacts 33 and 34. The reed is connected'to battery ground through prong 8D. Prongs H, 18 and 8| are not connected. Upon reversal of the position of unit I0 in base I3 the polarity will be reversed, as in Figure 6.

The ground connection for prong Cl is provided in both positions by the cooperating Jack.

The present invention may be utilized with other or modified types of interrupter circuits than those illustrated in Figure 3. For example, the interrupter may be provided with a pair of reeds or armatures instead of the single one shown as 32 in Figure 3. With two reeds contacts 33 and 34 may cooperate with a double-laced contact on one reed and contacts 35 and 36 with a double-faced contact on the other reed. with this arrangement the reed in the secondary circuit may be connected to the center prong I! but isolated from ground. The center receptive jack 22 may, in this case, be connected only to the output circuit. The output circuit will thus be entirely isolated from the primary circuit and from ground whereby both sides oi the output may be at potentials substantially different from ground potential, if desired. This may be taken advantage of to provide for vacuum tube grid biasing from the same circuit.

Thus it will be seen that applicant has provided a novel and advantageous polarity reversal means whereby a considerable amount of labor, inconvenience and danger to equipment can be eliminated.

While the present invention, as to its objects and advantages, has been described herein as carried out in specific embodiments thereof, it is not desired to be limited thereby but it is intended to cover the invention broadly within the spirit and scope of the appended claims.

What is claimed is:

1. In combination, an interrupter unit, a plurality oi connecting prongs mounted thereon, a base member, a plurality oi jacks mounted thereon for receiving said connecting prongs, a current source and a load connected to respective jacks, said plurality of prongs connecting to said lacks in a first relative position to obtain one type oi. circuit connection between said source, interrupter and load and connecting to said Jacks in a second relative position to obtain another type 0! connection therebetween, at least two of said prongs exchanging jacks in the transfer from said first to said second position.

2. In combination, a magnetic interrupter unit. a plurality oi connecting prongs mounted thereon, a base member, a plurality of jacks mounted thereon for receiving said connecting prongs, a current source and a load connected to respective jacks, said plurality of prongs connecting to said Jacks in a first relative position to obtain one type oi circuit connection between said source, interrupwr and load and connecting to said jacks in a second relative position to obtain another type of connection therebetween, at least two of ,said prongs exchanging lacks in the transfer from said first to said secondposition.

3. In combination, a self-rectliying magnetic interrupter unit, a plurality of connecting prongs mounted thereon, a base member. a plurality of jacks mounted thereon for receiving said connecting prongs, a current source and a load connected to respective jacks, said plurality of prongs connecting to said Jacks in a first relative position to obtain one type of circuit connection between said source, interrupter and load and connecting to said Jacks in a second relative position to obtain another type of connection therebetwron. at least two of said prongs exchanging lacks in the tranz'er from said first to said second position.

' 4. In a device for converting direct current at a first potential into direct current at a second. potential, a self-rectifying magnetic interrupter unit, a first circuit for supplying currents at said first potential to said unit, a second circuit for conducting currents at said second potential to J said unit. a ,plurality of terminals held in fixed spatial relation on said unit, a base. a plurality of terminal connectors mounted in fixed spatial relation on said base and connected to said first V and second circuits, said terminals and terminal 10 connectors being spaced in cooperative relation to connect said unit to said circuits in two different manners with two difierent positions of said unit on said base, said terminals connecting said circuits to said unit in a first manner in the first position of said unit and reversing the connection of one of said circuits without reversing the connection of the other in the second position of said unit.

5. In combination, a selt-rectiiying magnetic 20 interrupter unit, a first and a second pair of prongs mounted thereon, a co-operating base member, a first pair of Jacks on said base adapted to receive said first pair of prongs and a second and third pair of jacks on said base, each adapted 25 to receive said second pair or prongs, said prongs connecting to said first and second pair of lacks in a first position or said prongs relative to said base, and connecting to said first and third pair of jacks in a second position of said prongs rela- 30 tive to said base.

6. In combination, a self-rectifying magnetic interrupter unit, a first and a second pair 01' prongs mounted thereon. a co-operating base member, a first pair of jacks on said base adapted 35 to receive said, first pair of prongs and a second and third pair of jacks on said base, each adapted to receive said second pair of prongs, said prongs connecting to said first and second pair of Jacks in a first position of said prongs relative to said base, and connecting to said first and third pair oi Jacks in a second position of said prongs relative to said base, said first pair of prongs connecting to said first pair of jacks in reversed relation in said second position.

7. In combination, a self-rectifying magnetic interrupter unit, a first and a second pair of prongs mounted thereon, a co-operating base member. a first pair of jacks on said base adapted to receive said first pair of prongs and a second and third pair of Jacks on said base each adapted to receive said second pair of prongs, said prongs connecting to said first and second pair of jacks in a first position oi. said unit on said base, and connecting to said first and third pair of lacks in a second position or said unit on said base.

8. In combination, a seit-rectiiying magnetic interrupter unit comprising'a vibratory reed having contacts thereon, a first and a second pair of oppositely disposed contacts having one contact 60 of each pair adapted to co-operate with said reed contacts on each side of said reed, a first and a second pair of prongs mounted on said unit and connected to said respective pairs or contacts. a

co-operating base member, a'transi'ormer, a first pair of jacks on said base adapted to receive said first pair 01' prongs and connected to the two ends of one winding of said transformer, a second and a third pair oi? Jacks on said base each adapted to receive said second pair of prongs and having corresponding jacks oi each pair connected to the ends of the other winding 01 said transformer, said prongs connecting to said first and second pair of jacks in a first position of said prongs relative tosaidbase.andconnectingtosaidflrstand'l6 third pair of Jacks in a second position of said prongs relative to said base, said first pair of prongs connecting to said first pair of Jacks in reversed relation in said second position whereby the connection of one of said pairs or contacts to one of said windings is reversed without the other connection being reversed.

1 9. In combination, a self-rectifying magnetic interrupter unit comprising a vibratory reed having contacts thereon, a first and a second pair of 1 oppositely disposed contacts having one contact of each pair adapted to co-operate with said reed contacts on each side of said reed, a first and a second pair of prongs mounted on said unit and connected to said respective pairs of contacts, a co-operating base member, a transformer, a first pair of jacks on said base adapted to receive said first pair of prongs and connected to the two ends of the primary winding of said transformer, a second and a third pair of jacks on said base each adapted to receive said second pair of prongs and having corresponding jacks of each pair connected to the ends of the secondary winding of said transformer, said prongs connecting to said first and second pair of jacks in a first position of said prongs relative to said base, and connecting to said first and third pair of jacks in a second position of said prongs relative to said base, said first pair of prongs connecting to said first pair 1 of jacks in reversed relation in said second position whereby the connection of one of said pairs of contacts to'said primary winding is reversed without the secondary connection being reversed.

10. In combination, a self-rectifying magnetic interrupter unit comprising-a vibratory reed having contact-s thereon, a first and a second pair of oppositely disposed contacts having one contact of each pair adapted to co-operate with said reed contacts on each side of said reed, a first and a second pair of prongs mountedon said unit and connected to said respective pairs of contacts, a co-operating base member, a transformer, a. first pair of jacks on said base adapted to receive said first pair of prongs and connected to the two ends of the secondary winding of said transformer, a second and a third pair of jacks on said base each adapted to receive said second pair of prongs and having corresponding jacks of each pair connected to the ends of the primary winding of said transformer, said prongs connecting to said first and second pair of jacks in a first position of said prongs relative to said base, and connecting to said first and third pair of jacks in a second position of said prongs relative to said base, said first pair of prongs connecting to said first pair of jacks in reversed relation in said second position whereby the connection of one of said pairs of contacts to said secondary winding is reversed without the primary connection being reversed.

11. In combination, a self-rectifying magnetic interrupter unit comprising a vibratory reed having contacts thereon, a first and second pair of oppositely disposed contacts having one contact of each pair adapted to co-operate with said reed contacts on each side of said reed, a first pair of prongs mounted on said unit and connected to said first pair of contacts, a second and third pair of prongs mounted on said unit and having corresponding prongs of each pair connected to each of said second pair of contacts, a co-operating 9,040,810 7 base member," a transformer, a first pair of Jacks on said base adapted to receive said first pair of prongs and connected to the two ends of one winding of said transformer, a second pair of Jacks on said base adapted to receive either said second or said third pair of prongs and connected to the ends oi the other winding oi said trans former, said first and second pair of prongs connecting to said jacks in a first position of said prongs relative to said base, and said first and third pair of prongs connecting to said jacks in a second position oi said prongs relative to said base, said first pair of prongs connecting to said first pair of jacks in reversed relation in said second position whereby the connection of one of said pairs of contacts to one of said windings is reversed without the other connection being reversed.

12. In combination, an interrupter unit, a plurality of prongs mounted thereon, a socket base, a plurality of jacks on said base adapted to receive said prongs in a first relative position I said unit and base, and also adapted to receive said prongs when said unit is rotated 180 degrees with respect to said base.

13. In combination, a magnetic interrupter unit, a plurality of prongs mounted thereon, a socket base, a plurality of jacks on said base adapted to receive said prongs in a first relative position of said unit and base, and also adapted to receive said prongs when said unit is rotated 180 degrees with respect to said base.

14. A self-rectifying magnetic interrupter unit comprising a vibratory reed having contacts thereon, a first and a second pair of oppositely disposed contacts having one contact of each pair adapted to co-operate with said reed contacts on each side of said reed,'a first pair of prongs mounted on said unit and connected to said first pair of contacts, and a second and third pair of prongs mounted on said unit each of said pairs being connected to said second pair of contacts.

15. In combination, a socket member for a magnetic interrupter unit, a transformer, a first pair of jacks in said socket connected to the ends of one winding of said transformer, and a second and third pair of jacks in said socket oi said pairs being connected to the ends of the other winding of said transformer.

16. In combination, a self-rectifying magnetic interrupter unit, a first and a second pair of prongs mounted thereon, an additional prong of greater length than said other prongs also mounted on said unit, a co-operating base, a first pair of jacks on said base adapted to receive said first pair of prongs, a second and a third pair of jacks on said base each adapted to receive said second pair of prongs, and an additional jack on said base to receive said additional prong to aid in positioning said other prongs in their respective jacks, said prong pairs connecting to said first and second pair of Jacks in a first position of said prongs relative to said base, and connecting to said first and third pair of jacks in a second position of said prongs relative to said base, said additional prong connecting to said additional jack in both the positions.

MARVIN E. NULSEN. IRA M. SLATER.

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