Nov. 5, 1946. ' A. s. RAETTIG 2,410,746 MAGNETICALLY OPERATED SWI TCH Filed Sept. 2, 1942 N71»: /6 ,5 a 20 2/ . ‘ 45 a g INVENTOR. #01525 ,5. EAL-T776 “ aamw Patented Nov. 5, 1946 2,410,746 UNITED STATES PATENT OFFICE 2,410,746 MAGNETICALLY OPERATED SWITCH Adele S. Raettig, Hoboken, N. J. Application September 2, 1942, Serial No. 456,992 1 Claim. 1 This invention relates to a switch and refers more particularly to a magnetically operated se lective switch used for energizing or otherwise in?uencing any one of several circuits. An object of the present invention is the pro vision of an effectively operating circuit control ler or switch of simple, compact and sturdy con (01. 200-87) 2 II, the number of which is equal to the number of terminals I2 which are to be controlled by the switch. Each terminal l2 has the form of a conduct ing bolt l3 extending through the bottom 9 of the casing and carrying a nut l4 and a wire l5 leading to any suitable circuit not shown in the struction, which is inexpensive to manufacture drawing. The upper end of the bolt l3 has the and which may be conveniently utilized for the form of a cylinder IS having recesses which con purpose of closing any one of a comparatively 10 tain two opposed ends ll of a swingable conduct large number of circuits. Another object is the utilization of a perma nent magnet for the purpose of actuating selec tively any one of several levers used for estab lishing an electrical connection between a num ing plate l8 shown separately in Figure 4. Thus the plate I8 is pivotally or swingably supported by the cylinder 16. The plates [8 are made of any suitable conducting and magnetizable ma terial. ‘ ber of terminals. Other objects of the present invention will be In each compartment ll there is a separate plate l8 carried by its terminal 12. The termi come apparent in the course of the following spec nals 12 are preferably arranged along a circle in i?cation. the center of which the central terminal is is In accomplishing the objects of the present in- ~' located. The plates [8 are normally situated in vention it was found desirable to‘ provide a cen a somewhat inclined position with their lower tral terminal, which may be grounded, if desired, ends located below a conducting disc 20 carried and to arrange other terminals about the cen by a cylinder 2| constituting a part of the central tral terminal, each of said other terminals being terminal 19. provided with a separate magnetizable conduct The cylinder 2| is integral with a conducting ing swingable member which may be attracted by bolt 22 extending through the bottom 9 and car a permanent magnet to provide an electrical con _rying a nut 23 and a wire 24. nection between the terminal carrying the mem The wire 24 may be grounded, or it may be ber and the central terminal. The magnet may be carried by means making it possible to shift the position of the magnet in order to be able to connected to a circuit or a part of a circuit which is to be electrically connected with any one of the terminals :2. energize or ' deenergize any one of the several The electrical ‘connection between the central terminal l9 and a selected terminal I2 is estab The invention will appear more clearly from lished by the use of a permanent magnet 25 which the following detailed description when taken in 35 attracts the swingable plate l8 of the selected connection with the accompanying drawing terminal l2 and thereby raises it to a position swingable members. showing, by way ‘of example only, a preferred , embodiment of the inventive idea. In the drawing: shown in broken lines in Figure 2; in this raised position the plate I 8 engages the disc 26 and thus provides an electrical connection between the Figure l is a top view, with a part of the cover 40 central terminal [9 and the selected terminal £2. removed, of a switch constructed in accordance with the principles of the present invention. Figure 2 is a section along the line 2-2 of Fig The magnet 25 ?ts into recesses 26 provided in the upper surface 2'! of the cover’t and situated directly above the compartments II and the ure 1. 1 swinging plates I8 which are located therein. Figure 3 is a section along the line 3-3 of Fig 45 The recesses 28 may be designated by suitable ure 1. indicia 28 by means of which the various termi Figure 4 is a perspective view of a swingable nals l2 may be distinguished one from the other; element. The magnet 25 is carried by a rod 2-9, the up The switch shown in the drawing is situated per end of which is connected wtih a manually in a round insulating box 5 closed by an insulat 50 operated disc or button 30. The rod 29 extends ing disc or cover 6 which is ?rmly attached to the through a sleeve 3! constituting a part of an arm box 5 by screws 7. Partitions 3 extend radially ’ 22. A coiled spring 33 encloses the rod 29 and is . within the box 5 and are ?rmly connected to its situated in a recess 34 provided in the sleeve 3|. bottom 9 and side wall 10. The partitions 8 sepa One end of the spring 33 engages the disc 30 rate the interior of the box into compartments 55 while the other end presses against the bottom of shame 4 3 The partitions ii and the location of the mag the recess 34. The lower surface of the arm 32 has a recess 35 into which the magnet ?ts and the spring 33 tends to move the magnet 25 into the recess 35 (Figure However, the rod 29 is locked in a downward position, in which the magnet 25 is situated in one of the recesses 26, by a locking member 36 which into a recess 3'! provided in the rod 2;’). net 25 in a recess member 36 to recede into the passage 39. Then the magnet 25 is raised and moved into the re cess 25 of the arm 32 by the 1 ' lg 33. The arm 32 may be conveniently move . over the surface 2‘! oi the cover 6, since the attractive force of the The locking member 35 is pressed against tie rod 29 by a spring 36 situated in a passage 39 which is formed in the sleeve 3! and which is closed by a screw 40. magnet is insuflicient to actuate the plates [8 while the magnet 25 is located in its upper posi have Thethe arm form 32 of hasa pointer an outer slidable end 4!over which the sur tion in the recess 35 of the arm 32. It is apparent that the switch shown above has been given by way of illustration and not by way of limitation and that it is capable of many ‘variations and modi?cations without exceeding the scope or the extent of the present invention. All of such variations and modi?cations are to be included within the scope of the present inven tion. What is claimed is: In a switch, in combination, an insulating hol face 21 and adapted to be placed opposite any one of the indicia 2B. The indicia 28 are so lo cated that in these positions of the pointer ill, the recess 35 and the magnet 25 are located di rectly above a recess 26. The inner end of the arm 32 has the form of a sleeve 42 whichis mounted upon a pivot 43. The pivot 43 is ?rmly mounted in the cover 6 of the casing. The switch is operated as follows: Let it be assumed that an operator desires to low casing, radially extending partitions situated within said casing and dividing the interior there of into a plurality of segment-like compartments, terminals located within said compartments close to the outer walls thereof, comparatively wide use the switch for the purpose of providingr an electrical connection between that termina1 :2 which is designated by the numeral “4” in Fig‘ ure 1, and the central terminal l9. Then the plate-like magnetizable conducting members lo operator until the turns pointer the 4| armof32the by arm holding is situated the knob di rectly opposite the numeral “4.” In this posi— tion the magnet 25 which is held in the recess 35 of the arm 32 by the spring 33, will be located directly above a recess 26. are such that only one plate 16 situated directly below the magnet is influ enced by it. In order to disengage the switch, the operator pulls the knob 39 upwardly, causing the locking cated within said compartments, said terminals comprising means pivotally supporting the outer of plate-like members at a distance from the bottom of said compartments, whereby 35 said plate-like members are downwardly inclined Then the operator inserts the magnet 25 into in the direction toward the common center of said ‘ that recess 26 by depressing the knob 30 and the arm 29 connected therewith. The recess 3i’ of compartments in the inoperative positions of said plate-like members, a central terminal carried by said casing substantially in the middle thereof the 39 inarm the 29course will ?nd of the itself downward oppositemovement the of 40 and extending above the inner ends of said plate like members, an insulating cover mounted upon the arm 29, and then the locking member 36 will said casing and having a plurality of radial re be pressed into the recess 31 by the spring 38. Thus the arm 29 will be locked in its depressed position in which the magnet 25 is located in the recess 26. cesses formed therein, said recesses being nar rower than said plate-like members and being lo 45 cated directly above them, a permanent magnet The plate l8 of the terminal l2 will be placed then in the magnetic field of the magnet 25, so that it will become magnetized and will swing from the position shown by full lines in Figure 2 to the position shown by broken lines ther in. In 50 ment the magnetized with the disc position 23, so thethat plate ani Selectrical in con nection is established between the wire 24, the terminal IS, the disc 20, the plate I8 and the 55 terminal I2. ?tting into said recesses, an arm mounted upon said cover and rotatable over said recesses, and means carried by said arm and carrying said magnet for moving said magnet into and out of any of said recesses, whereby said magnet may raise the inner end of any plate~lilze member 10 oat-ed below it into engagement with said central terminal. ADELE S. RAE'I'I‘IG.