US1353084A - Automatic train-stop - Google Patents

Description

N. STRAMAGLIA.v

AUTOMATIC TRAIN STOP.'

APPLICATION FILED JAN. 30. 1920.

Patented Sept. 14, 1920.

2 SHEETSSHEET' I.

QZZ LL Mia/a Jim/0a N. STRAMAGLIA.

AUTOMATIC TRAIN STOP.

APPLICATION FILED 1AN.30, 1920.

Patented Sept. 14, 1920 2 SHEETS-SHEET 2.

/V[C07a 537077109? z'a PATENT NICOLA STRAMAGLIA, OF CHICAGO, ILLINOIS.

AUTOMATIC TRAIN-STOP.

Specification of Letters Patent.

Application filed January 30, 1920. Serial No. 355,247.

To all whom it may concern Be it known that I, NIcoLA STRAMAGLlA, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Automatic Train-Stops, of which the following is a specification.

This invention relates to an automatic train stopping system of'the electrical type and has for its primary object to provide devices and circuits therefor whereby the air brakes of a train will be applied under danger conditions and further the throttle lever closed to prevent passage of steam to the engine cylinder.

An object of the invention is the novel manner of associating the parts so that the brake operating device will be rendered inactive when the brakes have been fully applied and the throttle closing mechanism set to be automatically returned to normal position when danger conditions do not exist. 7

\Vith these and other objects in view the invention will be better understood from the following detailed description taken in connection with the accompanying drawings wherein Figure 1 is a diagrammatic view of the train carried mechanism.

Fig. 2 is a diagrammatic view of the track circuits.

Figs. 3, 4 and 5 are detailed views of the' various parts.

Again referring to the drawing illustrating one manner in which myinvention may be constructed the numeral 1 designates a cylider of a steam motor, the piston 2 of which has its stem 8 connected to the throttle lever t in such a manner that when the piston is moved'to the left, in a mannerhereinafter described, the throttle lever will be closed so as to prevent the flow of steam to the engine cylinders. Cooperating with the stem 3 is a reverse switch 5 for controlling the direction of travel of the motor 6. It will be noted that the switch has a pin and a slot connection with the stem 3 so that the piston 2 may travel a predetermined distance before operating the switch. One cir cuit 7 of the motor is tapped on to the mains 8 and has its continuity controlled by the switch A second circuit 9 is also tapped to the mains 8 and has its continuity also controlled by the switch 5. This circuit has arranged therein a spring actuated switch 10 which is under the influence of the magnet 11 that is energized in a manner hereinafter described. This circuit 9 is further controlled by a switch 12 operated by a diaphragm13 one face of which is acted upon by the pressure of steam in the cylinder 1 through pipe 14.-. The cylinder communicates with the engine boiler through the pipe 15 in which is arranged a valve 16. The stem of this valve 16 has a geared connection 17 with the motor 6 in a manner that the rotation of the valve will be limited to 90 degrees.

Connected to the mains 8 is a circuit 18 having arranged therein a ma net 11, a second magnet 19 and a signal'buTb 20. A pair of spaced contacts 21 in circuit 18 is adapted to be bridged by the switch 22 when the air brakes of the train are fully set. A circuit 23 is connected to the mains 8 and has arranged therein a motor 24 and a switch 25 under the control of magnet 19. The motor 24 has a geared connection with a valve 26 arranged to bleed the train line and thereby set the air brakes. A hand wheel 27 connected to the armature of the motor allows the valve 26 to be manually returned to closed position. The mains 8 are respectively connected to the car wheel 28 and a trolley 29 traveling on a third rail 30. The trolley 29 is pressed into engagement with the third rail by the sprin s 31, as shown in Fig. 5. Referring toF ig. 5 it will be seen that the valve 16 is provided with two passages 32 and 33, the former arranged to allow steam to pass to the cylinder while the latter is. arranged to bleed said steam from the cylinder when the valve is moved to a predetermined position.

To complete the train carried mechanism I provide the recorder 34 having its actuating lever 35 arranged to. be struck by the fingers 36 on the piston 2 when the train carried mechanism has been fully operated.

To complete the invention, see Fig. 2, I provide a series of circuits 37 connected'to the s aced blocks when the ordinary track circuit 38 operates. As these circuits are well known in practice a detailed description will be eliminated.

From the foregoing description it will be seen that when a train enters a danger block motors 6 and 24. will operate for applying the air brakes and cutting off the steam supply for closing the throttle lever 4. When the piston 2 has traveled the required dis- Patented Sept. 14, 1920.

tance it will operate the recorder and besides steam will act against the diaphragm 13 for closing the switch 12. By this time the switch plate 5 has been moved to the right so as to close the break in circuit 9 so that the current may pass-to the motor 6 in a reverse direction for returning the throttle lever operating mechanism to normal position. While the brakes are fully applied this resetting of the throttle closing mechanism to normal position is prevented by magnet 11 holding the switch 10 open. Another advantage of the switch 21 is that the circuit of motor 24 is broken when the brakes are fully applied.

It is, of course, to be understood that the invention may be constructed in various other manners and the parts associated in different relations and, therefore, I do not desire to be limited in any manner except as set forth in the claims hereunto appended.

Having thus described my invention what I claim is- 1. An electrical train stopping system comprising a piston for connection with the throttle lever of the train, a cylinder for the piston, a valve controlling the flow of steam to and from the cylinder, a motor for turning the valve in either direction, a reverse switch for controlling the direction of rotation of the motor, a circuit closer operated upon a predetermined travel of the piston for controlling the operation o'l the motor, and electric circuits for connecting said circuit closer, switch, and motor to a source of current under danger conditions.

2. An electrical train stopping system comprising a piston for connection with the throttle lover of the train, a cylinder for the piston, a valve controlling the flow of steam to and from the cylinder, a motor for turning the valve in either direction, a reverse switch for controlling the direction of rotation of the motor, a circuit closer operated upon a predetermined travel of the piston for controlling the operation of the motor, and electric circuits for connecting said circuit closer, switch, and motor to a source of current under danger conditions, and an air brake operating device rendered active under danger conditions.

3. An electrical train stopping system comprising a fluid motor for closing the throttle lever, and an automatically operated valve for passing steam to the motor and discharging steam from the motor under predetermined conditions, electric circuits for controlling direction of operation of motor, and a recorder actuated by the motor when the throttle lever has been fully closed.

In testimony whereof I aflix my signature.

NICQLA STRAMAGLIA.

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