Dec. 24, 1946. E. J. BAUMGARDNER 2,413,135 ELECTRIC SWITCH Filed Dec. l2, 1944 ATTORNEY Patented Dec. 24, 1946 UNITED STATES PATENT OFFICE 2,413,135 ELECTRIC SWITCH Earl J. Baumgardner, Marion, Iowa, assigner to H. A. Douglas Mfg. Co., Bronson, Mich., a cor poration of Michigan \ Application December 12, 1944, Serial No. 567,810 4 claims. (Cl. 200416) l This invention relates generally to electric' switches and more particularly has to do with a relatively small lever actuated switch preferably adapted for installation on the instrument panel or other mounting in an automotive vehicle for controlling a plurality of electric circuits. v One important object of the invention is to provide an electric switch embodying improved means whereby to prevent undue tilting of the 2 contact means carried by the switch back, guide means I spaced from the switch back to provide a chamber 5 within which the actuated means 3 is movable and held substantially against tilt ing, and operating means 6 in the form of a lever connected to the actuated means for driving the latter. Considering the structure more in detail, the housing I includes a bottom wall l, side Walls 8, actuated means or bridge means of the switch. 10 and end wallsI 9. The bottom wall 'l carries a Another object is to provide means for indextubular bearing member I0 which is secured in ing or locating the switch backpr contact carplace by providing the member with a portion rier with respect to the switch housing, the inflexing means also serving to reinforce a portion which projects through a circular opening formed in the wall and flanging over the portion against or portions of the carrier. l5 the inner surface of the wall whereby to per A further object is to provide improved means manently secure the member in place, against ro for predetermining the on and off positions of the tation. The switch is preferably adapted for in switch, and means for effecting an eû‘lcient snap stallation in a panel or other mounting with the action in connection with said positions. threaded part of the bearing member Ill pro A further object is to provide an improved con- 20 iecting forwardly through a hole provided there nection between the actuated means and the operating means or lever of the switch. ` for in the panel so that a nut may be secured to the bearing for detachably securing the switch Moreover, an important object is to provide a in place with the outer extremity of the lever 6 switch consisting of very few parts which may be extended forwardly for Aeasy manipulation by the economically manufactured and assembled on a 25 operator of a vehicle. The bearing is preferably production basis. provided with means, not shown, cooperating Other objects and advantages of the inven with the mounting whereby to prevent rotation tion will appear after reading the description of the switch with respect to the mounting. hereinafter set forth in conjunction with the The side walls 8 of the housing are preferably drawing annexed hereto wherein various parts 30 provided with continuations Il which are turned of the switch are designated by numerals. inwardly toward each other and against the outer In the drawing: surface of the end walls 9 whereby to reinforce Figure l is a vertical section taken through the the housing. Each side wall is further provid switch showing the switch in an inoperative or ed with a pair of fingers I2 and I3 which coop of! position: 35 crate with suitable notches I4 and I5, respec Fig'ure 2 is an end view of the switch with por tively. provided therefor in the sides of the rec tions thereof broken away whereby to better il tangular base portion I6 of the switch back 2 lustrate certain details of construction; and are clinched over and against the outer sur Figure 3 is a top view of the actuated means face of the portion I6 as clearly illustrated in and associated structure; 40 Figure 4 for permanently securing the switch Figure 4 is a bottom view of the switch; back in place. The fingers and notches are of Figure 5 is a vertical section similar to Figure such a character that the switch back can be 1 showing the switch in an on or operative posi assembled with the housing in only one posi tion; tion. Figure 6 is a top plan view, on a reduced scale, The switch back is preferably constructed of the guide means; and from molded insulating material such as Bake Figure 7 is a side view of a plug conductor ter lite. 'I'he sides of the base portion I6 are pref minal adapted for cooperation/with each of the erably provided with outwardly extending lon terminal receptacles forming a part of the con gitudinal abutments Il and the ends with trans tact means of the switch. verse abutments I8. All of these abutments are The switch, among other things, generally in set back or stepped from the inner face I9 of cludes a housing I, a switch back or carrier 2 the base portion I6 so as to provide a generally of insulating material carrying contact means, rectangular boss portion 2li which projects into actuated means generally designated 3 carrying bridge means adapted for cooperation with the 55 the interior of the housing I with the abutments Il and I8 engaging the free marginal edges of 2,413,135 3 4 the side walls 8 and end walls 9 of the housing. respectively, as clearly illustrated in Figures 1 and 2 to form a` good tight durable connection . ner than the intermediate ply 38, and the latter thinner than the lower ply 39. ' The carrier is provided with a pair of square shaped notches 42 and 43 adjacent the ends of sealing off the open side of the switch housing. The back is provided with a rearwardly extend 5 the carrier between the pairs of ñngers 40 and ' in'g enlargement integral with the base portion 4l, respectively, the notches being formed bycor I6. 'I'his enlargement is preferably composed of three connected circular portions, each portion responding apertures formed in the plies 38 and 39. The carrier is also provided with two round _ having a cylindrical opening or pocket 2|. The pockets ‘I4 formed by corresponding apertures in openings are equally spaced apart on the medial 10 the lower ply 39. The pockets are disposed be 4 line of the back. One of the circular portions tween and in alignment with >the notches 42 is preferably provided with a projection 22 ex and 43. tending along a side thereof so that the person assembling the switch can quickly determine the The bridge means is preferably made in the form of a relatively narrowY elongated metal plate proper position the switch back is to assume on l5 44 provided with round boss contact portions 45 the housing. This projection thus serves as in and 46 adjacent its extremities. When the actu dexing means and at the same time reinforces ated means is thrown by the lever to the left the enlargement. The back is also provided with from its center or intermediate position as illus a plurality of holes 23 which extend through the trated in Figure 5, the pair of boss contact por base portion and communicatively connect with 20 tions ‘45. and 46 of the bridge means will engage the openings 2l, as clearly illustrated in Figures the contact surfaces of the pair of rivet contact 1 and 2. The inner planar face I9 of the boss means 29 and 30, respectively, to close a first elec -portion 20 is provided with a plurality of round trical circuit, and when thrown to the right, the recesses 24. Generally tubular split cylindrical contact means 45 and 46 will engage the rivet terminal receptacles 25, 26, and 2l are disposed 25 contacts 28 and 29, respectively, to close a second in the openings and are secured in place by rivet x circuit and open the first. The ends of the bridge contacts 28, 29, and 30, with the shank portions means are narrower than the central portions of the rivets extending through the holes 23, and from which the boss contact portions project, through apertures provided therefor in the trans and are provided with fingers which cooperate verse base portions 3l of the receptacles, the ends go with at least a part of the bridge carrier. More of the rivets -being flanged over against the base specifically, the fingers 4l formed on the bridge portions whereby to permanently secure the re project into the notches ¿i2 and d3. Attention ceptacles and rivets to each other and to the ^ is directed to the- fact that the thin upper ply 31 switch back. As clearly illustrated, the heads of -of insulating material backs against the plate the rivet contacts are inset in the recesses 24 so 85 portion 36 of the actuated means and is not inter that their contacting surfaces are disposed sub rupted by any recesses for the fingers of the bridge stantially iiush with the inner face I9 of the back. means or with pockets corresponding to the The terminal receptacles are substantially iden pockets for helical springs 48. This arrangement tical in character and each is preferably of a prevents the fingers of the bridge means from length so that the4 outer ends of the receptacles 40 engaging the actuated means to cause a` short are inset with respect to the outer surface 32 of circuit. , the enlargement. Each receptacle> is preferably It will be noted that the lower ply 39 of insu provided with a detent 33 which is adapted to lating material forming a part of the bridge car cooperate with a cove» or groove 34 provided in rier is the only ply provided with the round pock the plug conductor terminal 35 when the terminal 4 5 ets ‘Il for the springs 48. The springs are well is seated in the receptacle. When a terminal is seated in the pockets and the inner ends abut properly seated in a receptacle it is resiliently the intermediate ply 38 of insulating material. held in place and substantially concealed so that Obviously, if found desirable corresponding holes no metal can come in contact therewith or engage or pockets could be provided in the ply 38 so that another terminal in an adjacent opening or 50 the inner ends of the'springs would abut the ply' pocket t'o cause a short circuit. The back is 31. In any event, provision must -be made where unique in character in that the contact means - by the springs will not engage the actuated means in their entireties are inset and substantially to cause a short circuit. The outer ends of the concealed from view. _ ' The actuated means 3, bridge carrier, and the bridge means carried -by the carrier will now be described. The actuated means in part includes a generally rectangular plate 3S to which is se cured the bridge carrier consisting of three super springs seat in the depressions formed by the boss vcontact portions of the bridge means. The bridge means is thus well balanced and urged by the springs in a direction toward the contact means carried by the carrier 2. .The springs also func tion to urge’ the bridge carrier and actuated imposed plies of insulating material 3l?, 38, and 60 means as a unit in an opposite direction against the 'guide means generally designated Il and the 39. A pair of depending ñngers d@ and a pair guide means against the bottom wall l of the _ of spaced depending ‘lingers ¿ii formed adjacent switchV housing. Attention is also directed to the _the respective ends ci the plate project through important fact that the springs also operate in suitable notchesl provided therefor in the plies constituting the bridge carrier and are bent under 65 conjunction with a larger helical spring 49 asso ciated with the actuated means fl and the oper and against the lower ply 39 of insulating ma ating means or lever 6» whereby to eliminate-vi teriai' to secure‘tbe parts together as a. unit. The . bration vand assist in maintaining the parts in h carrier is preferably' constructed of a plurality their proper operative relationship to obtain the of‘plies in order to reduce the cost of manufac 70 desired action and results. _turaandatthe same time provide a set up which f The plate portion 3d of _the actuated means 3 may be easiiy‘andfnuickìgmcdiñed to take one is provided .with an upstanding tubular bearing or a plurality 'of bridge means. v The paies'may 53 centrally located on the medial line of the plaie portion.V The helical spring 49 surrounds the tu bodiment of the invention, the top ply 3l is thin- 75 buia;- bearíng ät. with one end of the spring nor be of the same thichess, but in the present em 2,413,135 - 5 mally bearing against the plate portion 36 of the actuated means and its other end against an en larged radial annular flange 5I provided adja cent the inner extremity of the lever 6. The in ner end of the lever is provided with an annular -portion 52, the periphery of which is rounded for to bear against the bottom wall 1 of the switch housing by the helical springs 48. The spring 49 which surrounds the bearing 50 primarily serves to eliminate vibration between the operat ing lever and the actuated means but also func tions to assist in throwing the actuated means camming contact with the inner wall or surface to its various positions. of the tubular bearing. 'I'hat portion of the le In view of the foregoing, it should be evident ver between the enlarged annular portion 5I and that when the switch lever is in the position illus the annular portion 52 is such that suiliclent 10 »trated in Figures 1 and 2, the boss contact por Iclearance is provided when the lever is pivoted tions 45 and 46 of the bridge means 44 will en on the pivot 53 projecting through the bearing I0 gage the inner planar face I9 of the switch back. and through the round intermediate enlargement When sufiicient pressure is applied to the op 54 of the lever. To provide for additional clear _erating lever in a left direction the bosses 60 will ance, the plies 31 and 38 of insulating material ride out of the detent pockets 6l and the pro are provided with openings, as indicated in Fig jection 56 will ride against the tongue-like cam ures 1 and 2. The lever and spring 49 are the last portion 64 and into the detent pocket 58. Dur parts of the switch to be assembled, the spring be ing this transitory movement the actuated means ing inserted through the bearing I0 in advance will tilt very slightly but will be held against sub of the lever, and when the two are located the 20 stantial tilting. In other words, the guide means pivot pin 53 is driven into place. ' functions to hold the actuated means against un 'I'he plate portion 36 of the actuated means is due tilting and the operating lever from becom 'also provided with a pair of upstanding round ing disconnected from the bearing 50 when the projections 55 and 56 located on the medial line, switch is operated. As clearly illustrated in Fig one on either side of and >equally spaced from ure 5, when the projection 56 is in the seat or the bearing 50. These projections 55 and 56 are pocket 58 and the right hand extremity of the adapted to cooperate with a pair of depressions actuated means is engaging one end of the hous forming detents 51 and 58 provided in the base ing, the boss contact portions 45 and 46 engage portion 59 of the guide means and assist in lo the .rivet contact means 29 and 30 to control one cating and holding the actuated means in its op 30 electrical circuit. When suilicient pressure is ap erative positions. The plate portion 36 is further plied> to the lever in a reverse direction the pro provided with a pair of relatively small upstand jection 56 will ride out of the pocket 58 and the ing round boss portions 66 disposed in a line tongue-like cam portion 64 will assist in throw transverse to the said medial line with one on ing the actuated means back to a neutral or either side and equally spaced from the bearing inoperative position as illustrated in Figures 1 50. These boss portions 6U are received in in and 2, whereupon the projections 55 and 56 en dentations forming detents 6I for holding the ac gage the cam portions 63 and 64 and the boss tuated means in an off or inoperative position, portions 60 will be received in the detent pockets as illustrated in Figure 1, and otherwise slidably 6I. If greater force is applied to the operating _engage the bottom surface of the base portion 59 40 lever 6 in this reverse movement the actuated of the guide means whereby to assist in elimi means may be thrown completely over so that the nating friction between the actuated means and projection 55 will strike the cam portion 64 and the guide means when the actuated means is ride into the pocket 51 whereupon the boss con moved longitudinally within the housing from tact portions 45 and 46 of the bridge means will any of its selected positions. 'I'he base 59 of the 45 engage the rivet contact means 28 and 29 to close guide means is provided with an elongated rec another electrical circuit. The same action takes tangular clearance aperture 62 for the tubular , place when the actuated means is thrown back bearing 50, helical spring 49, and the inner op to close the first circuit as when throwing from erating extremity of the lever 6. The material the first circuit closing position to the second adjacent each end of the clearance aperture 62 50 circuit closing position. Attention is also di- is preferably upturned so as to provide tongue rected to the fact that the bridge means 44 will like cam portions 63 and 64 which are engaged by tilt or laterally adjust itself to the rivet contact the projections 55 and 56 whereby to assist in di means depending on the position of the actuated recting the latter into the detent pockets 5l and means. 56. The cam portions 63 and 64 are so con Having thus described my invention, it is ob structed and arranged that when the switch is in vious that various modifications may be made an inoperative position the projections 55 and 56 in the same without departing from the spirit are disposed in the clearance aperture and engage of the invention; and, therefore, I do not wish the tongue like cam portions 63 and 64 and assist to be understood as limiting myself to the exact the bosses 60 and detent pockets 6| to hold the 60 form, construction, arrangement, and combina actuated means in said inoperative position. The tion of parts herein shown and described. guide means 4 is generally channel in shape and I claim: includes the generally rectangular planar portion 1. An electric switch including, a housing, guide 59 just referred to and a pair of side walls 65, the means disposed in said housing providing a cham latter of which are interrupted by a pair of cor 65 ber, a carrier carrying contact means carried by responding cutouts 66 adjacent the detent pockets said housing, actuated means carrying bridge 6I so that the material within which the detent >means disposed in said chamber and operating 6I are formed is relatively narrow permitting means for moving said actuated means so that same to yield to a very slight degree whereby to the bridge means may engage said contact means, further assist in providing a positive acting snap 70 said guide means being provided with an opening, switch. The guide means is of a size to more or and said actuated means being provided with less snugly fit in the switch housing so that there means cooperable with the opening whereby to is no longitudinal movement of same in the predetermine at least one position of said ac housing. The free longitudinal marginal edges tuated means,.said guide means being further of the side walls of the guide means are caused 75 provided with locating means cooperable with the ’- '2,419,135 said means on 'said actuated means whereby/to said housing, actuated means carrying bridge locate; atrïleast another position of said actuated . " means disposed in said chamber and operating means. -' means formoving said actuated means so that the e .,2,.~An;e1ectric switch including, a hdus1n8..€u1de meansydisposed in said housing providing a cham ber,„;a çarrieniacarrying contact means carried by said-¿housings,actuated means carrying bridge 5 . bridge means inay engage said contact means. said guide means being provided with an opening, and said actuated means being provided with means cooperable with the opening whereby` to .predetermine at least one position of said ac means disposed in said chamber. and means for operating.;saidvactuated means in said chamber tuated means. scrà tlpattsaid1 .bridge means may engage said con 10 4. Guide means tactmeans;A saidjguide means being provided with an;„opening„and-fsaid actuated means being pro vided withfmeansococperabie with said opening for;à maintainingqsaid switch in an open circuit . fortan electric switch includ-- ing, a channel part, the base of said channel being provided with a clearance opening for the operat ing means of the switch, the material adjacent 'the extremities oi?4 said opening being fashioned position-„said fguide` means also being provided 15 to provide locating means :for the actuated means with meansg‘cooperable with the said means on of the switcln and said base portion also being Saidl actuatedmeans for holding said actuated ` provided with means adapted to be engaged by means in.;either,of >`two circuit closed positions. the actuated means for predetermining certain ,5f e1ectric;_,switch including, a housing, guide positions of said ,actuated means. means disposedin said housing providing a cham 20 bert-1a ycarrierqcarryingcontact means carried by EARL J. BAUMGARDNER.