US1026766A - Automatic safety appliance for railway-cars. - Google Patents

Description

w! L: AUTOMATIC SAFETY APPLIANCE FOB RAILWAY CABS.

APPLIOA1'IOH FILED BEPT 8, 1911.

1,026,766.- PatentedMay21, 1912.

I 1 WITNESSES INVENTOR W. L. POOLE.

AUTOMATIC SAFETY APPLIANCE FOR RAILWAY CARS.

I APPLICATION FILED SEPT. 8, 1911. v Patented May 21, 1912.

2 .SHBBTS-SSHEET 2.

W1 TNE SSE 5 11V" VEN T 01? r f f A llorm UNITED STATES PATENT oFFIoE.

WALTER L. POOLE, 0F COVINGTON, VIRGINIA, ASSIGNOR OF ONE-HALF MEDWEDEFF, 0F BALTIMORE, MIARYLAND.

mo mutton AUTOMATIC SAFETY APPLIANCE FOR RAILWAYfCARS.

specification of Letter-s Patent.

I Patented May 21, rate.

Application filed September 8, 1911. Serial No. 648,340.

To all whom it may concern:

Be it known that I. WALTER L. Poona, a citizen of the United States, residing at Covington. in the county of Alleghany and Qtate of Virginia. have invented certain new and useful Improvements in Automatic Safety Appliances for Railway-Cars, of which the following is a specification.

This invention relates to automatic safety appliances for railway cars and the like, and has for its object to provide a device which will operate to release the pressure in the train line pipe to set the brakes in case of derailment of any car in the train.

Another object is to provide means for preventing the device being operated other than by actual'derailment of the truck.

It is also designed. to provide a simple and inexpensive device which may be readily applied to existing rolling stock of all kinds now in universal use.

With these and other objects in view, the present invention consists in the combination and arrangement of the several parts whiclrwill be hereinafter more fully described, shown in the accompanying drawings and pointed out in the appended claims, it being understood that changes in the form. position. size and arrangement of the several parts described may be made within the scope of the claims without departing from the spirit or sacrificing any of the-advantages of the invention.

' Reference being had to the accompanying drawings forming part of this specification, Figure 1 is a view in side elevation of aportion of a car with the invention applied thereto: Fig. 2 is a'similar view with the parts in the position assumed upon derailment of the truck; Fig. 3 isa transverse sectional view of the same; Fig. at is a plan view of thedevice, parts being in section; 5 is a transverse'sectional view of a slightly modified form, and Fig. 6. is an elevationof the same.

Similar characters ofreference designate corresponding parts in all-the figures of the drawings. V

Secured to the floor frame of a car indicated A, and projecting downwardly at either side .of the car are hangers or brackets 1, the lower end of. each terminating in a bearing 2, for the reception of a trunnion 3 formed on the end of a transversely extendof the t appet portions 6 of the bard.

that might be-encountered between the rails.

A release valve 7 is connected to the train line pipe at the proper place above the bar 4, and is normally closed to the atmosphere. so that it does not affect the train line pressure until operated to open to'the atmosphere as will presently appear.

Pivotally connected to the lever 8 for operating the valve 7 is a rod 9.- the lower end of which is piv'otally connected to one A bracket 10 is fixed tothe floor frame A of the car, and the rod 9'is slidably mounted in this bracket. said rod having fixed thereon a collar 11. and a helical tension spring 12 encircles the rod and is interposed between the bracket- 10 and the collar 11, it being intended that said springshall exert sufficient pressure downwardly on the bar 4: to prevent the same being operated other than by the derailment of the car. Should thewheels of a truck leave the rails as shown in Fig. 2. the tappet will engage the rail. and through the rod 9 operate on the valve 7 to open same to the atmosphere and thus apply the brakes in the manner well known, the weight of the car bein such as to cause the spring 12 to be further. comit angles to form tappet or pressed. llhen the car is restored upon the I rails. the excess compression of the spring 1:2 occasioned by the derailment of the car is released. and the spring automatically returns the valve to normal position. i

y In Figs; 5 and 6 is shown a modified form in which the tappets indicated 13 arearranged over each rail, :1 rod 14 being slid ably mounted in a guide 15, and is connected at its upper endto the operating lever of a release valve 16 located in, a branch plpe 1'? from the train line pipe. A

helical tension spring encircles the rod let and has one end fast to the valve lever and its other end secured to ahfixed support 19 depending from the car frame. this spring will therefore prevent the valve being 0perated except by the weight of the car when derailed.

I Having fully described the invention,

what is claimed as new and desired to secure by Letters Patent, is;

. railed,- a release valveconnected with the train line pipe ofjan air brake system, means foroperably connecting the valve with the tappets, and means for returning .the valve to normal position after derailment.

2. In 'a'. deviqebf the character described comprising a bracket supported by a car,

a push rod slidably mounted in said bracket,

altappetcarried by said push rod, a releasevalve operably connected with the train line pipe of anair'brake system, the push rod adapted to be actuated by the derailment of said car, and flexible means for preventlng actuatlon of said valve other than by derailment of said car,

,"3. Ina'devicc of the characterdescribed comprising a bracket supported by a car, apush rod slidably a t'appet carried by said push'rod, a release comprising a brake system,

.fiexible means for mounted in said bracket,

valve operably connectedwiththe train line pipe of an air brake system, the said push rod adapted to be actuated by the derailme'nt of the car, ing actuation of said valve other than"b'y derailment of the car, and means for returning said Yalve to normal-position after derailment.

v 4:. .In a device'of the characterdescribed,

plurality of brackets supported'by a car, push rods slidably mounted in said brackets,' t'appets carried by said pushrods, a" release valve operably' connected with-the train line pipeof-anlair the said-push rods adapted to be actuated by the derailment of the car,

said valve, other than by derailment .-fof-the car, and means for returning said valve'to normal position after derailment.

In testimony whereof I aflixmy signature in presence of two witnesses. I

WALTER Ln POOLE. Witnesses: ANNIE ARRrrr,

M. .D; MILLER.

flexible means for preventpreventing actuation of I

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