US1081892A - Signal device for railways. - Google Patents

Description

H. L. CRAIG.

SIGNAL DEVICE FOR RAILWAYS.

APPLICATION IILBD 1111111.1.1913I 1,081,892. Patented Dec. 16,1913.

2 SHEETS-SHEET 1.

H. L. CRAIG.

SIGNAL DEVICE POR RAILWAYS.

APPLIOATION FILED MAR.1. 1913.

1,081,892. Patented Dec. 16,1913.

2 SEBETSSHHET 2.

UNITED STATES `PATEN T OFFIDE.

HARRY LOROANZO CRAIG, OF MIDDLETOWN, NEW YORK, ASSIGNOR OF ONE-HALF T0 WILLIAM PAUL CORBET'I, OF MIDDLETOWN, NEW YORK.

SIGNAL DEVICE FOR RAILWAYS.

Specification of Letters Patent.

Patented Dec. 16,1913.

To all who/m 'it may concern Be it known that I, HARRY L. CRAIG, a citiven ot the United States, residing at Middletown, in the county of Orange and State of N ew York, have invented certain new and uset'ul Improvements in Signal Devices for Railways; and I do hereby declare the :tollowing to be a tull7 clear, and exact description et the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and ligures et reference marked thereon, which form a part oit' this specific: tion.

This invention relates to new and use'tul improvements in automatically operated apparatus tor actuating emergency brakes upon railway trains and comprises a .simple and etlicient device of this nature having various details of construction and combinations and arrangements of parts which will. be hereinafter :t'ully described, shown in the accompanying' drawings and then spe citically defined in the appended claims.

I illustrate my invention in the accompanying drawings, in which Figure l a view in elevation showing the application of my invention to a railway and signal tower. Fig. 2 is a plan view et a railway tower and connections adapted to be raised by a railway locomotive. Fie'. 3 is a view in elevation ot' the mechanism carried by the engine and adapted to actuate the emergency brake. Fig. 4t is an enlarged detail view oit the brake actuated mechanism, and Fig. 5 is a detail perspective view oit' the rock shaft and connections for actuating a signal.

Reference now being had to the details oit the drawings by letter, A designates a lever adapted to actuate an emergency brake of any desired construction, and B is a longitudinally movable bar which is connected at one end to said lever and is movable between the guides C, and D is a cam which is curved and tapers longitudinally and is adapted to have a wcdging or pushing action against the end of the bar B in order to impart a longitudinal movement thereto for the purpose of driving the har to the position shown in dotted lines in Fig. 4 by which movement the lever for operating the emergency brakes is actuated. Said cam D has arms E integral therewith and which project from a c0llar F which is pivotallv mounted upon a pin I-I. A bar K has its upper end inverted L-shaped as at K and normally engages a notch L formed in the convexed edge et the cam I) to hold the latter normally in the position shown in solid lines in the drawings. The lower end of the bar K has a cross-piece N, and O is a lever pivotally mounted upon a fixed pin Q, the lever O being adapted, when turned upon its pivot to the position shown in dotted lines in Fig. 4t, to cause the bar K to be raised sufficiently to disengagc its upper end from the notch in the cam D, thus allowing the latter' to fall to the position shown in dotted lilies in Fig. 4t. The falling movement oit said cam will tend to impart a longitudinal movement to the bar B and through its connections with the emergency lever to cause the brake mechanism, not shown, to be operated.

Iivotally mounted transversely to the track oit the railway in the manner illustrated in Fig. 2 is a rock shaft T mounted in the bearings T and to the crank arm T2 ot said shaft't a rod T 3 is connected which in turn is pivoted at T'i to one arm oit' the angle lever S. A rod S is pivoted at S2 to one arm oi the angle lever S and its other end is adapted to actuate the seniaphore signal J mounted upon the tower J.

In operation, when it is desired to set the crank shaitt so that it will operate the brakes automatically as the engine equipped with the apparatus passes by the crank shaft, semaphore is set to the position shown in Fig. 3, in which the crank shaft T will project above the rails. The normal position of the lever O is that shown in solid lines in Figs. l and t and in which position it is adapted to contact with the rock shaft T which, as the engine passes by the same, throws the lever to the position shown in dotted lines, which will raise the bar K and release the cam D, allowing the same to iall to the position shown in dotted lines. The momentum of the cam D in swinging down ward is sufficient to impart a longitudinal movement to the bar B which will instantly apply the emergency brakes.

By the provision oit an apparatus embodying the features of my invention, it will be noted that a simple and ellicient mechanism is afforded whereby a signal may be given to an approaching train equipped with the apparatus and mechanism set in order to automatically apply brakes in the event of the signal not being noticed by the person in control of the brake mechanism in the eab oi the locomotive.

IVhat I claim to be new is l. An automatically-operated emergency brake apparatus, comprising a brake lever, a. bar connected therewith, a pivotal curved tapering weighted cam engaging the end of said bar, a longitudinally movable releasing bar normally engaging and holding said cam, a lever adapted to actuate said bar, a rock shaft adapted to trip said lever and impart a longitudinal movement to the releasing bar to allow said cam to swing downward to move the bar connected to the valve brake lever, as set forth.

2. en automatieallybperated emergency brake apparatus, comprising a brake lever, a bar connected therewith, a pivotal curved tapering weighted cam engaging the end of said bar, a longitudinally movable bar having its upper end angled and normally engaging a notch in said cam, a lever pivoted below the lower end of said angled bar, a rock shaft adapted to engage said lever to impart a longitudinal movement to the bar with an angled end to allow said cam to swing downward and move the bar connected to the valve lever, as set forth.

3. An automatically-operated emergency brake apparatus, comprising a brake lever, a bar connected therewith, a pivotal curved tapering weighted cam engaging the end of said bar, a longitudinally movable bar having its upper end angled and normally engaging a notch in said cam, a lever pivoted below the lower end ef said angled bar, a rock shaft adapted to engage said lever to impart a longitudinal movement to the bar with an angled end to allow said cam to'swing downward and move the bar connected to the valve lever, a signal, and connections between the same and said rock shaft, asfset forth.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

HARRY LOROANZO CRAIG.

Witnesses:

II. C. DIMLER, C. D. JUDD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of IPatents,

Washington, ID. C.

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