US1066079A - Signal for trains. - Google Patents

Description

F. A. CASEY.

SIGNAL FOR TRAINS.

APPLICATION FILED JUNE30, 1906.

Patented July 1, 1913.

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FREDERICK A. CASEY, or BILLERICA. MASSACHUSETTS. ASSIGNOR OE -N-E-HALF T0 THE ASHTON VALVE COMPANY, or BOSTON MASSACHUSETTS, A CORPO ATION OF CONNECTICUT; ALBERT C. ASHTON, or SOMERVILLE, massacrrusn'r'rs; AND MARY N. CAsiaY, or BILLERICA', MASSACHUSETTS, EXECUTORS or SAID FREDERICK A.

CASEY, DECEASED.

KIGNAL FOR TRAINS.

T 0 all-10110111 it may concern- Be it known that I. FREDERICK A. CASEY, of Bille'ricaj, in the county of Middlese-vand State of Massachusetts, haveinvented a new "and useful Improvement in Signals for Trams, of

cation.

\vhichthe followingv is a"-spec-iti- My invention is mainly for use on trains equipped with brakes operated by pressure in the train pipe andmy object is to provide anaudible signal for indicating whether or not there is more than a certain pressure in the train pipe, and also to give indication for other purposes, and my invention is an audible signal arranged to indicate an excess of pressure inthe train pipe.

A feature consists in the means for indi-j eating the presencein thetra-in pipe of sufli cient pressure to operate the. brake.

Another feature consists in a whistle which is operated by the pressure in the train pipe, and which preferably operates without regard to the posit-ion occupied by the device controlling the exhaust.

Other feature are hereinafterdescribed.

In the drawings Figure 1 is a sectionalelevation of a signal embodying my invention"; Fig. 2 is an elevation of the main casing with the handle of the plug broken away; Fig. 3-is a section on line 3-3 of Fig. 1; Fig. 4 is 'a section on line 44 of Fig. 1; and Fig.'5 is a detail hereinafter described.

Casing A has inlet a for connection with the source of pressure and port 0 leads to the groove b around the plug B. Port of connects the inlet with the valve is to be 7 hereinafter described. Plug B is tapered as shown to enter the casing. A and has a circuthe end of which are nuts I), I), the spring bearing against the casing and together with the nuts holding the plugin position in the casing, but with a yielding hold so that the plug may be rotated or left in any desired position. .Pin 6 acts as a stop for a plug B when it is in engagement with either shoulder k of the casing. Attached to plug B Specification of Letters Patent.

The plug B has an extension-b is whistle support D \vhichcarries the whistle member G which has ports leading to chamber 9 above whichextends lip 9, around which and up into chamber 9 the air passes in making its whistling sound. -Attached to the whistle .support'D is member which through arms E isconnected-with member v Patented July-1, 1913. Application filed June 30,1906. Serial No. 324,171. i

E which provides a support for member F.

in which moves the valve rod H. Valverod H has a cap h which is one abutment of the spring It.

whistle. Conduit a, is controlled by valve is acting under the influence of spring is and screw is and when the valve-is open the pressure may pass through conduit a to Valve h is attached to the other. end of rod H and closes the conduit to the screw l: for protection to reed-L and has I perforations is to act with the :reed 1: The

members, F and: D and their connections are the handle with which to turn the plugB.

In using my signal 'to indicate an excess of pressure in the train pipe the plug will have one of the ports I) in registrv withconduit (1 and friction will hold the plug in place, and it may be left inthis position in-.

definitely. the only function of the port 6 of plug B in this case being to complete-a conduit from the inlet to valve is which will be so adjusted that if more .t-haria certain pressure is present in the train .pipethe valve will open and the air will pass through ports k and is acting upon reed k and 'giV-Y ing an audible signal while sueh excess of pressure last-s.

I may also use the signal to determine whether or not there is sufiicientpressure in the train pipe to operate the brakes and in this case when this information is desired.

the plug will be turned by its handle to If sullicient ,pressure'is present in the'train' pipe the reed is will give the signal and the plug may .bethen turned so that port- I) will no longer register with conduit a as in this use of my signal 1t is only desired to get information and not to have the Sig nal keep sounding'while a certain condition.

lasts.

Conduit b 6" leads through the casing A from the inlet to the atmosphere, and is controlled by plug B. The latter has a port 6 which in Fig. 1, is at right'angles with conduit Z) I), but when the plug 15 turned 90 degrees from the positionv of Fig, 1 port b connects the portion 1) of the conduit with the portion b", thereby making an exhaust to the atmosphere because portion 6 leads to the atmosphere.

By turning the plug until stop I) en ages either shoulder It of the casing an exhaust from the inlet through port b to the atmosphere will be had and it will be seen that there will always be a conduit a}, b b, b, b leading to the whistle controlled only by the valve and this is an important feature as it is very desirable to have the Whistle in condition for operation no matter What position the plug may occupy, it being only necessary to depress cap It in order to operate the whistle One advantage of my signal is that the operator can be sure that the brake will operate without being compelled to use the ex- .haust before it is needed. It will also be clear that the whistle of my signal cock will not operate by mere turning of the handle and plug but requires a movement of valve 12. separate from that turning.

I do not claim by itself the feature of havs;

ing the Whistle operative in any position in this application .as I intend to make that the subject of a separate application.

\Vhat l claim is:

1. In a signal of the character described the combination of a casing having an exhaust port; a plug mounted in the casing to control the exhaust port; an audible signal controlled by the plug and operative at a predetermined pressure; and a whistle carried by the plug and operative in any position of the plug.

2' In a signal of the character dese bed the combination of a casing having an exhaust port; means movably mounted in the casing to control the exhaust port; a signal controlled by said movable means and operative at a predetermined pressure; and a whistle carried by said movable means and operative in any position thereof.

FREDERICK A. CASEY. vlVitnesses G. A. ROCKWELL, ALBEaT C. ASHTON.

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