US716411A - Electric tram and rail way. - Google Patents

Description

No. 7l6,4ll. Patented Dec. 23, I902.

B. HACKING. A

ELECTRIC TRAM AND RAILWAY.

(Application filed Dec. 18, 1961. Renewed Nov. 22, 1902.)

(No Model.)

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UMTTED STATES ATnNT OFFICE.

ROBERT HACKING, OF NOTTINGHAM, ENGLAND, ASSIGNOR TO HANCOCK & LEIGHTON, OF NOTTINGHAM, ENGLAND.

ELECTRIC TRAWI AND RAIL WAY.

SPECIFICATION forming part of Letters Patent No. 716311, dated December 23, 1902.

Application filed December 13. 1901. Renewed November 22, 1902. Serial No. 132,487. (No model.)

To all whom it nuty concern:

Be itknown thatLRoBERr HACKING, modelmaker, a subject of the King of Great Britain, residing at Woodland road, West Bridgeford, Nottingham, England, have invented certain new and useful ImprovementsinElectric Tram and Rail Ways, of which the following is a specification.

This invention relates to tram and railways in which one of the main conductors is in sections insulated from each other and receiving current only when the vehicle is upon them; and it has for its object means wherebycurrent is successively supplied to the sec- I 5 tions by the passage of the vehicle.

The drawings are diagrammatic views of a portion of a line showing the parts in three different positions.

Figure 4 shows a modification. Figs. 1, 2,

and 3 show four sections of the line marked 1, 2, 3, and 4, which are insulated from each other at 5.

Between each section is a two-armed rocking switch, preferably inclosed in a box of earthenware or the like. The arm carries three contacts A B O, two, A and B, on one side of the pivot and one, C, on the other, engaging with corresponding contacts a Z) c, fixed in the box. The contact A is connected to a supply-main 6, and etc the section of the conductor next before the switch. The contact B is connected to one end of the wind ing of a solenoid or electromagnet d, whose core or armature D is carried by the switcharm on the other side of the pivot to B, the other end of the winding being connected to the return-main. The contacts b are connected to portions of the section 2 3 and 4 next after the switches which are insulated at 7 7 from the rest of the sections, the two parts of which are connected together by wires 8. The contact C is connected to the winding of a second solenoid 6, similar in all respects to the first, except that it is on the other side of the pivot. The contact 0 is connected to the section of the conductor next before the switch. Normally the contacts C c engage with each other, the circuit through A a and B I) being broken. The vehicle carries a trolley F, having two contacts or rollers f, whose distance apart is greater than the distance between any two sections of the conductor. These contacts are connected together and to the motor F on the car. The trolley also has a contact f, connected to the motor and engaging with the return-main 9.

As the vehicle moves along the line, carrying the trolley with it, current passes through its motor from the section of the conduct-or which is receiving current to the return-main. When the trolley comes to the end of a sectionsay the second section, as shown in Fig. 1it bridges over the space between it and the next-say the thirdsection, so that both sections are now receiving current, the sec- 0nd from the main 6, as hereinafterdescribed, and the third from the second through the trolley. A circuit is thus closed through the third section, the contacts a O, (which are still together,) and the solenoid e of the switch between the third and the fourth sections, causing it to attract its armature E and rock the switch-arm, closing the circuits through A a and B b and breaking the circuit at O 0, thus bringing the parts into the positions shown in Fig. 1. The third section now, therefore, receives current directly from the supply-main 6 through the contacts A a, of this switch independently of the connection made by the trolley between the second and third sections. As the trolley proceeds it leaves the second section, and its leading Wheel comes upon the insulated portion 3 of the third section, as shown at Fig. 2, whereupon a circuit is closed through the third section, the trolley, the insulated portion 3 of the third section, contacts I) B, and the solenoid d of the switch between the second and third sections, (which is still in the position shown in Fig. 1,) causing it to attract its ar- 0 mature D and rock the switch-arm, breaking the circuits at A a and B b and closing the circuit at O 0, thus bringing the parts into the positions shown in Fig. 2. Current is therefore now cutoff from the second section.

If it be desired that the vehicles shall be able to run in either direction, every section of the conductor is provided with two insulated portions, one at each end, the additional insulated portion 1 of the first section being connected to contact I) of the switch between the second and third sections, and so on for the portions 2 3, 850.

In order to prevent vehicles colliding with each other, each switch is provided with a projection G, which when the switch rocks causes a contact-spring H to press against a fourth contact g and close a circuit from the negative main 9 to the contact-a in the next section but one behind or forward. If, therefore, two cars are running, as shown in Fig. 3, and the second or latter car gets onto the section next but one behind the preceding car and closing the circuit from the positive main to this contact a, the result is a short circuit and-the second car is stopped. This device is more especially adapted to railways, and if proceeding in the opposite direction the result is the same.

The trolley may have more than two wheels or contacts, as indicated in Fig. at.

What I claim'is 1. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, and a switch for each junction supplying when in one position current to the section of the conductor next behind it and connecting the conductor of the second set next after it with the returnmain through means tending to reverse its position, and when in its other position connecting the section of the conductor next behind it with the return-main through means tending to put it into its first position.

2. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the j unctions between the sections, a switch for each junction, a circuit closed by the switch when moved in one direction, between the positive main and the section of the conductor next before the switch, a second circuit closed by the switch when moved in the same direction,between the second conductor next after the switch and the return-main, a third circuit closed by the switch when moved in the reverse direction between the section of the conductor next before the switch and the section of the conductor next after the switch, and means operated by the second and third circuits respectively for moving the switch in the reverse and first directions.

3. The combination of a supply-main, a re turn-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, switch-arms, three contacts on each switch-arm, a connection between one contact and the supply: main, connections between the second and third contacts and the return-main, sets of three contacts with which the switch-contacts engage, connections between the first and third contacts of the latter sets and the section of the conductor, connections between the second contacts of the latter sets and the second set of conductors, and means operated by the circuits through the second and third contacts for moving the switch in opposite directions.

4:. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, a switch for each junction supplying when in one position current to the section of the conductor next behind it and connecting the conductor of the second set next after it with the return-main through means tending to reverse its position, and when in its other position connecting the section of the conductor next behind it with the return-main through means tending to put it into its first position, a third set of conductors one behind each junction, and connections between these contacts and the next contacts but one of the second setin advance of them.

5. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, a switch for each junction, a circuit closed by the switch when moved in one direction, between the positive main and the section of the conductor next before the switch, a second circuit closed by the switch when moved in the same direction, between the second conductor next after the switch and the return-main, a third circuit closed by the switch when moved in the reverse direction between the section of the conductor next before the switch and the section of the conductor next after the switch,means operated by the second and third circuits respectively for moving the switch in the reverse and first directions, a third set of conductors one behind each junction, and connections between these contacts and the next contacts but one of the second set in'advance of them. I

6. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections,switch-arrns, three contacts on each switch-arm, a connection between one contact and the supply-main, connections between the second and third contacts and the return-main, sets of three contacts with which the switch-contacts engage, connections between the first and third contacts of the latter sets and the sections of the conductor, connections between the second contacts of the latter sets and the second set of conductors, means operated by the circuits through the second and third contacts for moving the switch in opposite directions, a third set of conductors one behind each junction, and connections between these con tacts and the next contacts but one of the second set in advance of them.

7. The combination of a supply-main, a return-main, a conductordivided into sections insulated from each other, asecond set of conductors each situated in advance of the junctions between the sections, a switch for each junction supplying when in one position current to the section of the conductor next behind it and connecting the conductor of the second set next after it with the return-main through means tending to reverse its position, and when in its other position connecting the section of the conductor next behind it with the return-main through means tending to put it into its first position, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the return-main.

8. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of cond uctors each situated in advance of the junctions between the sections, a switch for each junction, a circuit closed by the switch when moved in one direction, between the positive main and the section of the conductor next before the switch, a second circuit closed by the switch when moved in the same direction, between the second conductor next after the switch and the return-main, a third circuit closed by the switch when moved in the reverse direction between the section of the conductor next before the switch and the section of the conductor next after the switch, means operated by the second and third circuits respectively for moving the switch in the reverse and first directions, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the return-main.

9. The combination of a supply-main, a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, switch-arms, three contacts on each switch-arm, a connection between one contact and the supply-main, connections between the second and third contacts and the return-main, sets of three contacts with which the switch-contacts engage, connections between the first and third contacts of the latter sets and the sections of the conductor, connections between the second contacts of the latter sets and the second set of conductors, means operated by the circuits through the second and third contacts for moving the switch in opposite directions, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the return-main.

10. The combination of a supp1y-main,a return-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, a switch for each junction supplying when in one position current to the section of the conductor next be hind it and connecting the conductor of the second set next after it with the return-main through means tending to reverse its position, and when in its other position connecting the section of the conductor next behind it with the return-main through means tending to put it into its first position, a third set of conductors one behind each junction, connections between these contacts and the next contacts but one of the second set in advance of them, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the returnmain.

11. The combination of asupply-main, areturn-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, a switch for each junction, a circuit closed by the switch when moved in one direction, between the positive main and the section of the conductor next before the switch, a second circuit closed by the switch when moved in the same direction, between the second conductor next after the switch and the return-main, a third circuit closed by the switch when moved in the ,reverse direction between the section of the conductor next before the switch and the section of the conductor next after the switch, means operated by the second and third circuits respectively for moving the switch in the reverse and first directions, a third set of conductors one behind each junction, connections between these contacts and the next contacts but one of the second set in advance of them, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the return-main.

12. The combination of a supply-main, a re turn-main, a conductor divided into sections insulated from each other, a second set of conductors each situated in advance of the junctions between the sections, switch-arms, three contacts on each switch-arm, a connection between one contact and the supplymain, connections between the second and third contacts and the return-main, sets of three contacts with which the switch-contacts engage, connections between the first and third contacts of the latter sets and the sections of the conductor, connections between the second contacts of the latter sets and the second set of conductors, means operated by the circuits through the second and third contacts for moving the switch in opposite directions, a third set of conductors one behind each junction, connections between these contacts and the next contacts but one of the second set in advance of them, a fourth set of contacts each connected to the first contact of the set next but one from it, and means operated by the switch for connecting this contact with the return-main.

13. The combination ofasnpply-main, a return-main, a conductor divided into sections insulated from each other, switches supplying the sections with current in turn, a set of contacts, means operated by each switch to tor connecting these contacts with the return-main and a connection between each contact and the section of the conductornext but one behind it.

ROBERT HAOKING. Witnesses:

ALFRED CLARKE, MARK SHAW.

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