Патент USA US2112331код для вставки
March 29, 1938. 2,112,331 E. T. CONDOM AUTOMOBILE SIGNAL SWITCH Filed June 5, 1936 ll IIIIIIIIH 20 18 15 12 INVENTOR. EDWARD 7 Con/00M / 4 Pr? ATTORNEY Patented Mar. 29, 1938 2,112,331 UNITED STATES PATENT OFFICE 2,112,331 AUTOMOBILE SIGNAL SWITCH Edward T. Condon, New York, N. Y. Application June 5, 1936, Serial No. 83,622 2 Claims. (Cl. 200-11) The invention relates to an electrical switching to the steering post of a self-propelled vehicle. device adapted more especially for use with self This body portion carries also a plurality of yield propelled vehicles such as automobiles, as, for ex able elements as the spring-pressed balls I2, the ample, where it is desirable to give indication of two outer balls constituting, for example, live con a driver’s intention to make a turn either to the tact terminals while the intermediate one consti' right or to the left. tutes a neutral or grounded terminal. An object of the invention resides in the pro A pilot lamp l3 may also be arranged in the vision of a three-point signal switch mechanism body portion, if desired. which may be manually operated to the three po Upon the top‘ of the stationary body portion I0 10 sitions and embodying yieldable contact elements is mounted for oscillation a suitable cap‘ or mov of the switch device, together with additional yieldable holding means to insure against unin tentional displacement of the coacting parts un able member I5 bearing upon its under face, which is juxtaposed to the terminal elements 12, a der rough usage to which a switch of this type to slide over a pair of adjacent terminals to bridge the same, that is to say, a live terminal with the intermediate grounded terminal when the movable member is oscillated either to the right or to the left of its neutral position, similar may be subjected, particularly in connection with the operation of heavy trucks and the like. In carrying out ‘the invention, there is arranged to be suitably secured to an element of the ve hicle conveniently located to the operator the 20 novel switching mechanism in. a manner such that a handle element thereof is located for ma nipulation by the downwardly directed ?ngers of an operator. This handle is designed to oscillate a movable member of the switch device to either 25 side of a neutral position, there being provided on a stationary associated portion three independent terminal elements including two end and an in termediate terminal with yieldable contacts adapted for location in juxtaposition to the mov 30 able member. To insure the proper positioning of the mov able member and maintenance of a selected posi tion, there is provided in the handle portion thereof a spring-urged plunger or detent member 35 adapted to engage one of three sockets provided in the stationary body portion and which sockets are spaced in accordance with the angular spac ing of the yieldable terminal elements so that when the movable member is juxtaposed to any of said terminal elements, its position will be further insured againt unintentional displace ment by the detent member carried by the handle of such movable member. The nature of the invention, however, will best 45 be understood when described in connection with the accompanying drawings, in which: Fig. 1 is a plan View of the novel switch device with a portion indicated in horizontal section. Fig. 2 is a vertical section through the device; and Fig. 3 is a bottom plan. Referring to the drawings, I0 designates a sta tionary or attaching body portion of a switch de vice which may be mounted upon a suitable threaded stud H, as indicated, for example, at the 55 end of a switch lever or a bracket for attachment pair of oppositely disposed shoes l6, l1 adapted ly to the arrangement set forth in my copending application, Serial No. 524,990. 20 To effect convenient oscillation of this movable member, the same is provided with a handle or like element 18 projecting radially outwardly therefrom and which may be manipulated by the ?ngers of an operator of a vehicle. It has been found, particularly in the case of heavy trucks and vehicles subjected to considerable jarring and rough usage, that the spring-urged balls 12 may not exert su?icient hold upon the movable mem ber to insure that its position will be maintained 30 under all conditions. In order to obviate any possible unintentional displacement, the said han dle member I8 is, axially bored to receive a coil spring 19 which is located behind a detent mem ber or plunger 20 urged inwardly toward the sta 35 tionary body portion I8. The latter, moreover, is provided in its periphery with a plurality of sock ets 2| designed to receive the protruding end of the plunger 20; and the respective sockets are angularly located to conform to the positions of the aforesaid terminal elements. By this expe dient, whenever the movable member is properly positioned for making contact or is located in its neutral position, the said plunger 20 will also be located in a corresponding socket, which sockets may be rounded, as shown, to admit ready entry and removal in oscillating the movable member to a selected position. I claim: 1. A three-point signal switch for use with self propelled vehicles, comprising stationary attach ing means affording a bearing portion having a plurality of peripheral and circularly-disposed recesses, an annular exposed member movably mounted over and to rotate on the said bearing 2,112,331 2 portion and carrying a pair of separated contact shoes, means associated with the movable member adapted for manual engagement to oscillate said movable member upon either side of a neutral Ul position, three independent terminal elements in cluding two end and an intermediate terminal with yieldable contacts for engagement with the contact shoes in a direction parallel to their axis of oscillation and carried by the attaching means in juxtaposition to the movable member such that the intermediate terminal corresponds to the neutral position of said movable member, and a holding member carried by the movable member for yieldable positive engagement with the said recesses, in a direction at right angles to the direc tion of the application of the contact pressures, when said holding member is in either of its two operative positions and to maintain thereby a selected position. :0 2. A three-point signal switch for use with self-propelled vehicles, comprising attaching means affording a bearing portion having a plu rality of peripheral and circularly-disposed re cesses, an annular exposed member movably mounted over and to rotate on the said bearing portion and carrying a pair of separated contact shoes, a hollow handle extending radially out wardly therefrom adapted for manual engage ment to oscillate said movable member upon either side of a neutral position, three independ ent terminal elements including two end and an intermediate terminal with yieldable contacts for engagement with the contact shoes in a direction 10 parallel to their axis of oscillation and carried by the attaching means in juxtaposition to the mov able member such that the intermediate terminal corresponds to the neutral position of said mov able member, and a spring-urged detent housed within the hollow handle to engage said recesses, in a direction at right angles to the direction of the application of the contact pressures, when said movable member is in either of its two oper ative positions as well as in its neutral position 20 and to maintain thereby a selected position. EDWARD T. CONDON.