Патент USA US2117029код для вставки
May-10, 1938. E. A. LARssoN W 2,117,029 ELECTRIC CONNECTER Filed Feb. 1e, 19:57 ERNST Á ¿LESSON Á flor ney Patented May 1o, 193s ' 2,117,029 -UNITEDl sTATEs PATENT OFFICE 2,117,029 ELECTRIC CONNECTER ,l Ernst A. Larsson, Mansiield, Ohio. assignor to The Ohio Brass Company, Manslield, Ohio, a corporation of New Jersey Application February 16, 1937, Serial No. 126,012 4 claims. 5 (C1. rial-332) ' My invention relates to couplers and particularly to electric couplers for connecting conduc- is connected directly to the spring advanced con tact member; thus, the contactor and the cable tors of one car with the conductors of a coupled must move simultaneously. car. - ’ _ To over-come the diilìculty mentioned above, I The use of electric couplers on cars both inde- have devised a construction in which the con- 5 pendent. of and in combination with mechanical couplers is old, but under both conditions there has been diñlculty in maintaining a constant connection between the electric couplers at all io `time, and one object of my invention is to provide a new and improved form of electric coupler over-coming this diincult , tact member at the front end of the coupler is free to reciprocate `independent of the cable. thus when there is a tendency for the contactors to reciprocate for the reasons mentioned above. the advancing spring will maintain the contact members in coupled relation regardless of how y. . 0 much stress may be placed on the cable from the My invention resides in the new and novel construction, combination, and relation of the 15 various parts hereinafter described and shown in the accompanying drawing. ‘ In the drawing;_ Fig. 1 shows a face view of an electric coupler having incorporated therein my invention and 20 attached tc amechanicai car coupler, Eig. 2 is a, view in partial section on the line 2_.2 of Em 1_ Fig. 3 is a fragmentary view in partial section of two electric couplers having incorporated 25 therein a portion of my invention, in coupled relation. . Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 2. Fig. 5 is a view of a single coupling unit of 3“ a type in common use and previously referred to herein. ~ In rounding curves there is a decided side or lateral strain to the two coupling units holding the cars mechanicallyincoupled relation. Where 35 the electric coupleris attached to the mechanical coupler this side strain is also transmitted to the electric coupler. _ The eiîect of this side strain tends to separate the electric contacts of the electric coupler on lo the far side of the coupler from the center of curvature of the track. ` Under normal operations this slight relative movement of the electric couplers on one side will not open the circuit from car to car with the com5 mon type of coupler (see Fig. 5), but it is foundV that particularly in the winter time when the cable leading to the coupler becomes loaded with ice due to condensation and freezing of leaking' Steam that the weight of such ice formation on D the cable and the stillness of the cable will not permit the contact member of the coupler to operate freely under the action of the advancing spring, thus causing the circuit to open at lthe contacts under the conditions mentioned.y i It will be noted in Fig. 5 that the conductor accumulation of ice or for other reasons. ' In the preferred embodiment of my invention, I employ a Support l Which may be of various 15 forms and constructions and which I have shown as supported from a mechanical car coupler 2 by means of the bolts 3. In Fig. 1, I have shown the Support as a easing l equipped With three electric connecters 4, but any number may be 20 used to meet requirements. The car coupler 2 holds the cooperating electrical connecters on two coupled cars in connected relation. The Casing I is provided With registering open ings 5 and 6. the latter being shown as threaded. „ Mounted in the opening 5 is an insulating bushing 1 having a cavity 8 in which is mounted a con tactor 9 having a. head I Il and stem Il. The contactor reciprocates in the cavity 8 and is yieldingly held in its advanced position by 30 means of the spring I2. The contactar 9 is pre vented from advancing beyond a predetermined amount by means of a nut or collar I3 pinned to the end 0f the Stem Il and abutting against the end face of the bushing 1. The bushing 7 1S ~ provided with a flange Il which butts against the inner adjacent face of the casing I preventing the bushing advancing. Mounted upon the projecting end of the bush- v ing `| iSaSeeOnd insulating bushing l5 Which pl‘o- 40 `jects rearwardly and through the opening 6 and is provided with shoulders I6 and I'I. The bush inf.’ l5 iS held in position by means 0f the metal bushing I 8 which is adjustably held in position by threads cooperating with the threads of the 45 opening 6. The bushing I8 is provided with a flange I9 which butts against the adjacent outer face of the casing I. 'I'he inner face of the bush ing I8 engages the shoulder I6 on the insulating bushing I5, thus ñxedly holding the bushing I5 50 in advanced position and in turn ñxedly holding the bushing ‘l in its advanced Position. Mounted within the bushing I5 at its rear end is a collar 20 having a projecting stem 2l which is semi-circular >and cross-section. Secured to 55 2,117,029 2 the stem 2| by means of a bolt 22 is a cable tactor, the first and second bushing insulating the conductors from the support and means to connecter 23. The cable connecter has a flange suspend the support from a car. 24 which holds the cable connecter '23 and the 2. An electrical connecting device comprising parts 20 and 2| against longitudinal movement ‘ a metallic support having a front wall and a rear relative to the insulating bushing I5. ' wall and registering openings through the walls, The conducting portion 25 of the cable 26 is insulating bushings extending through the open secured in the socket portion of the connecter ings, means to hold the bushings in ñxed rela 23 and in order to maintain the connection free tion to the support, a terminal member at one from dirt, moisture, etc., a flexible rubber sleeve end of one bushing and projecting Within and 21 is secured to the end of the bushing I5 by 10 means of a clamp 29 and is secured to the outer without the bushing and having means to re ceive a cable, an insulating bushing to protect surface of the cable insulation 29 by means of a the last said means, a reciprocating contactor clamp 30. , mounted within one end of the other bushing and In order to electrically connect the cable 26 projecting from the bushing, the bushings insu to the contact 9, I employ a plurality of very lating the terminal member and contactor from 15 flexible conductors 3| having their ends secured the support, means to yieldingly hold the con to the members I3 and 20 as by means of welding tactor in its advanced position to engage a con or through the medium of a soldered connection. tactor on a counterpart device, ñexible means These flexible members 3| permit reciprocating positioned within the bushings to electrically con 20 movement of the member 9 relative to the casing nect the contactor and the terminal member. I, The members |3 and'20 might be electrically 3. An electrical connecting device comprising connected by means of an interposed helical a metallic support member having a front and a spring, but such a connection would be of very rear wall with registering openings through the low efliciency and would not conduct large cur walls, an insulating bushing extending through 25 rents which applicant’s construction is intended the openings, a reciprocating contactor mounted for and which it will accomplish eilïlciently. , in the said bushing at one end thereof and insu In order to maintain the abutting surfaces of lated from the support member by the bushing, I0 in as clean a condition as the contactor projecting from the end of the ' the contactor heads possible, I mount upon the projecting front end bushing, means to yieldingly advance the con 30 of the bushing 1 a’ñexible rubber sleeve 32 held tactor into engagement with a contactor on a in place by the clamp 33. The bushing 32 abuts cooperating connecting device and maintain said against the corresponding bushing on the coun engagement, means to support the said support ter-part coupler and the tendency is for these memberv and to cooperate with like means on a bushings to buckle more or less as shown in Fig. 3, thus insuring a sealed joint. By comparing the construction shown in Figs. '2 and 5, it will be apparent that the cable ycan not inñuence in any >manner the movement of the contactor 9. The members 3| are so ñexlble that they readily yield under the reciprocal move ment of the contactor 9.` ' cooperating connecting device to yieldingly hold the connecting device in operative relation, means on the bushing to engage one wall and ad justable means cooperating with the other wall to engage the bushing to hold the bushing mounted in position in the wall openings, a con necter mounted Within the bushing adjacent the end remote from the contactor, a ñexible mem Modiñcations will suggest themselves to those ~ ber positioned within the bushing and connect skilled in the art basedupon my disclosure and, ing the contactor and connecter, means on the therefore, I wish to be limited only by my claims. connecter~to receive a cable and the end of the 45 I claimz- _ 1. An electrical connecting device .comprising a metallic support having a front and a rear Wall and registering openings through the walls, an insulating bushing extending through one opening, a second insulating bushing extending 60 through the other opening and held in position by a bushing threadedly secured in the said other opening, the last said bushing holding the said second bushing against longitudinal movement in one direction and the said second bushing 55 holding the said first bushing against longitudinal movement in the same direction and the first bushing held against longitudinal movement in bushing extending beyond the connecter to en close the connection oi the cable to the con necter. 4. An electrical connecting device comprising a metallic support having a front wall and a rear wall and registering openings through the walls, an insulating bushing extending through the openings, means to hold the bushing in ñxed re lation to the support, a terminal member at one end of the bushing and projecting within and without the bushing and having means to receive a cable, a reciprocating contactor mounted with in and projecting without the other end of the bushing, the bushing insulating the terminal the other direction by the support, the ñrst bush ' member and the contactor from the metallic sup ing forming an apertured opening within the port, means to yieldingly hold the contactor in second bushing, a cable connecter secured to the its advanced position to engage a contactor on rear end of the said second insulating bushing a counterpart device, flexible means positioned against longitudinal movement in either direc within the bushing to electrically connect .the tion, a reciprocating contactor mounted in the contactor and the terminal member, and a ilexi 65 first said bushing and projecting into the said ble bushing surrounding the exposed end of the second bushing, means on the reciprocating con contactor but leaving the end face of the con tactor and engaging the said shoulder of the tactor exposed, the flexible bushing engaging a like bushing on a counterpart device to- protect two contactors while in engagement. ñrst bushing to limit movement of the con tactor in one direction, and a spring yleldingly holding the contactor in its advance position, ñex ible means within the second bushing electrically connecting the cable connecter and the con ERNST A. LARSSON.