US438084A - mcelroy - Google Patents

Description

(No Model.) 2 sheets-sheet I. D. S. MOELROY. RAILWAY TRAIN SIGNAL.

No. 438,084. Patented Oct. 7, 1890.

ATTORNEYS (No Model.) 2 SheetsShe 2.

D. S. MGELROY. RAILWAY TRAIN SIGNAL.

No. 438,084. Patented Oct. 7,1890.

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UNITED STATES PATENT OFFICE.

DANIEL S. MCELROY, OF NEW YORK, N. Y.

RAILWAY TRAIN-SIG NAL.

SPECIFICATION forming part of Letters Patent No. 438,084, dated October 7, 1890.

Application filed December 7, 1889. Serial No. 332,946. (No model.)

To all whom it may concern:

Be it known that I, DANIEL S. MOELROY, of New York city, in the county and State of New York, have invented certain new and useful Improvements in Railway Train-Signals, of which the followingis a specification, reference being had to the annexed drawings, forming a part thereof, in which- Figure l is a side elevation of my improved signal box, showing the same in an open position. Fig. 2 is a plan view with the top of the box removed. Fig. 3 is a plan view of a box provided with two signaling-plates, and Fig. 4c is a rear elevation of the same with the side of the box removed.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to provide a signal-box for railway train-signaling, which will be positive in its action, and which will send a return-signal for each operation.

My invention consists in the combination, with a suitable lantern, of a revoluble plate, an electrically-operated escapement for allowing the plate to move through a given portion of a revolution, and a signaling device connected with the escapement of the plate for sending a return-signal.

It also consists in the combination, with the signaling-plate and plate-operating mechanism, of an auxiliary plate arranged in the back of the box, and a light supported between the plates.

My present invention is an improvement upon a railway train-signal for which Letters Patent of the United States, No. 413,409, were granted to me on October 22, 1889.

The signal-box Ais provided with an opening a in one side thereof, and is furnished at the opposite side with a lamp 1), which is located directly opposite the said opening a.

Between the lamp 1) and the front of the box containing the opening a is arranged a frame B, in which is journaled an arbor O, the end of which projects through the said frame toward the front of the box A, and carries a plate D, provided with apertures c, in which are inserted windows of different colors.

Onthe arbor O is mounted a pinion d, which is engaged by a spur-wheel E on the shaft F,

the said shaft being provided with a propel ling-spring G, which causes the wheel E to turn the arbor G. V

The plate D is provided with four arms e, and in the frame B is pivoted an armature= lever H, which carries the armature f within the field of an electro-magnet I. The saidarmature-lever H is provided with the stud g, which projects normally into the path of the arms 6, and forms a detent or stop for the said arms.

Upon the arbor G, adjoining the plate D,is secured a scape-wheel J, having four teeth 6', corresponding in position with the arms e.

The armature-lever H is prolonged beyond its pivot and provided with apin g, which is adapted to engage the scape-wheel J whenever the armature f is drawn forward toward the magnet I, withdrawing the pin gfrom the path of the arms 6. provided with a retractile spring h, which re turns it to its normal position after it has been released from the magnet I. A contact-point K is secured to the box A in the path of the end of the armature-lever H, and the said contact-point and the lever are connected in an electric circuit including an alarm apparatus at the signal-station, so that whenever the circuit of the magnet I is closed to release the plate B and give a signal, the contact of the armature-lever H with the point K sends a return-signal, showing that the apparatus is operative.

In the apparatus shown in Figs. 3 and 4:- the arbor G is prolonged rearwardly and carries a plate D, provided with windows, as in the other case. In the present case an incandescent electric lamp b' is placed between the two plates so that its light may be seen through the plates simultaneously. Any suitable light may be used in lieu of the electric light.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a railway traln signal, the combination, with the plate D, provided with the apertures c and arms 6, of the scape wheel J, and the armature-lever H, provided with the pins 9 g, substantially as specified.

The armature-lever H is 2. The combination of the plate D, provided vided at its outer end with a pin to engage with arms 6, the scape-wheel J, the armaturesaid signal and prevent rotation of the shaft lever H, furnished with pins 9 g, the electrountil the magnet is energized, the opposite or magnet I, and the circuit including the arinainner end of the said armature-lever serving 15 ture-lever H and contact-point K, substanas a scape-lever to stop the rotation of said tially as specified. signals, and a source of light common to both 3. The combination, with two signals havsignals, substantially as set forth. ing acommon shaft, and a clock mechanism DANIEL S. MOELROY. for rotating the shaft, of an electro-magnet, \Vitnesses: 1c and an armature-lever pivoted between its EDGAR TATE,

ends adjacent to one of the signals and pro- 0. SEDGWICK.

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