US1556839A - Safety device for locomotive trucks - Google Patents

Description

on. 13, 1925- 156l39 H. s. JOHNSON swan nsvxcx FOR LOCOMOTIVE TRUCKS I Filed March 3, 1925 Patented Oct. 13, 1925.

UNITED STATE mm s. JoHnsoi o-r 1mm, mama. y

SAFETY DEVICE 'r oa LocoMorivE muons.

Applicationflled MarehB, 19 25. SeriatNo. 12,960.

Y To all whom it may concern:

a citizen of the United States, residing at Erwin, in the county of Unicoi and State of 5 Tennessee, have invented certain new and useful lmprovements in Safety Devices for Locomotive Trucks, of which the following is a specification, reference being had to the.

accompanying drawings. Thls lnventlon relates to safety devices for locomotlve trucks and more partlcularly to ajdevice for indicating derailment of the r bent lever 23' isprovided. This lever has truck.

An important object of the invention is 5 to provide a device of this character includ.- ing a signal and means for operating the signal from the air line of the engineso that a test may be made of the signal at any time without disturbing the setting of the automatic feature operating the signal upon derailment of the truck.

A still further object of the invention is to provide a device, of this character in which the operating mechanism completes its stroke 5 when the valve controlling the signal has been fully opened and movement of this operating :mechanism is positively checked, strain upon the valve and air line being thereby avoided.

. A still further object of the invention is to provide a device of this character which is very readily attached to both the engine and truck, which is simple in its construction and operation andwhichmay be very cheaply produced. g F

These and other objects-I attain by the construction shown in the accompanying drawings, wherein for the purpose of illusmy invention andwherein:,

Figure 1 is aside elevation showing a safety device constructed in accordance with my invention applied to anengine; and t Figure .2 is a combined perspective of the various sections of the safetyfdevi c'e showing the construction thereof. i Referring now more particularly to the drawings, the numeral IOindicatesa frame member of the locomotive and 11 a frame memberof. the front truck 12 of the locomotive. A pipe, leading from the train line or main reservoir is indicated at 13,-this pipe having a cut-off valve 14 arranged therein and having at its terminal a signal 15 to be perated y ea gee rair-thre gh t e is nal. This si alis to be arranged in thecab [Be it known that I, HARLY S. JOHNSON,

formed therein atone end thereof an opening 24 intermediate its ends and at'the bend thereof isa slot 25; at its opposite end, is found an opening 26 and intermediate the slot 25 and opening 26 a further opening 27. Between theslot 25. andopening 24, the lever. rests upon the upper end ofthewall 12, as at 28, and has a'shoulder or lug 29 abutting this wall. The slot, 25 receives the stop pivot 22. and permits a limited movement of the lever upon this sto pivoti i Securedto the liracket 16 byone ofthe securing elements 18 thereof is a small bracket 30 having an opening 31in which is engaged one end of a coil spring 32, the opposite end of. which is engaged in the opening 27of the lever'23 and places strain upon this lever so that normally the lever is positioned so that the upper end of the wall of the slot engagesthe stop. pivot. To the frame element 11 ofthetruck'12-a cou ler 33 is secured, thiscouplerhaving a hea :34 extending transversely of the frame member. and of the engine and formed'wi'th a longitudinally extending slot 35. Attached to the lever 23 jbym'eans of a bolt 36 extending through the openin 24-is a bracket.37;having ahorizontally dlrectedjflange 38'through which is directed the stem 39 of an eyebolt, the eye, 40 of-Which is vertically elongated and engaged through the slot 35 of thehead 34.. By a securing element directed through the opening 26 a swivel 4 1 isattachedto the lever 23:.and'provides a means for at. taching one end of achain or other suitable flexible element indicated at42 to the leverq The opposite end ofthis flexible' element engagedin an opening 43 formed infthe handle 44 0f the valve 14. I In the operation fthe deviceduringnor-l mal positioning of the truck and operat on of the. eng n In mammalia ;."ttgfvalve 3,9

with, the ties of th'eroad bed.

tests to determinewhether the-safety signal.

is, operative. These tests of railway vsafety devices at stated periods are-usually required either by laws offthe States or of the railway company; When the .truck, 12 leaves the rails, however-,ithta entire weight of the truck is brought to bear ,against the short end of t elever by the connection 33, 39, with the result I that the .long endof the lever is elevated until i the stop- -pi.vot engages the lower end wall of the slot "and checks this movement. ,This stop pivot is, as .disc losed, of heavier. material than that employedfin the construction of .the eye 40 andhead 3i and accord- 4 ingly any increase in strain, instead of moving the lever, will tend to deform or destroy either the eyeor the head without transmitting this strain to the valve handlein such manner as to place/undue strain ,"upon the pipe connections and cause a break of the train line pipe which would forcibly apply the, brakes and possibly; increase the damage caused by the derailment of the truck. The opening of the 'valve14 by the raising of the long end of the lever '23-will, of course,

operate; the signal amenable the engineer to bring his train to a gradual stop and, v ery probably withoutany further damage than that caused by theengagement'of the truck Itwill be obvious that the structure here inbefore set forth is capableof a considerable range of change and modification with-;

out materially departing from I the spirit of" c 1 my invention and I accordingly do not limit yjselftofsuch specific structure except as hereinafter claimed. s

Iclaim:,

i 1. In a safety device for nami derailment of locomotive trucks and the like, a

lever pivoted intermediateits ends upon the main frame of the locomotive, a connection between one end of the lever and the locomotive truck permitting limited transverse] and vertical movement of,;the truck without im parting such movenientsto the lever, comprising a link connected to the lever and de pendingfrom the truck and provided upon its lower. end withavertically elongated eye and an arm secured ,to the truck and pro vided upon its upper end with a transversely extending head having a longitudinally extending slot in which the eye is engaged, a connection between the opposite end of the lever and a control element, a signal operated from thecoutro'l element and means for limitlng movement of the lever in a direction to operate the control element.

.2. In. a signalling device for indicating derailment of locomotive trucks or the like, a bracket mounted upon the frame of the locomotive, a lever pivoted on said bracket,- a

member directed through the bracket and engaging the lever to limit the pivotal movement thereof, a signal element movable through a certain distance, a signal rendered operative by the element-atone limit of its movement, means normally {yieldably holding the lever in one position, a connection between the operating element and the lever shifting the operating element to the signal operating positionwhen the lever is moved from its normal position, said limitin-g member checking movement of the lever right angles, a leverpivoted on one of said walls and swinging adjacent'theother of said walls, a member directed through the other wall and engaging the lever .to limit.

the pivotalmovement thereof, "a signal element movable through a certain distance, a

signal rendered operativeby the element at one limit of its movement, means normally yieldably holding the lever in one position, a connection between the operating element andthe lever shiftingthe operating element to the signal operating position when the lever is moved from itsnormalposition, said member directed through said other wall. of said bracket limiting movement ofthe lever when the operatingmember arrives at its signal operating position and avconnection between the opposite end of the lever vand the truck of thelocomotive;

4. In asignalling deviceifor indicating derailment of locomotive trucks or the like, a bracket mounted uponthe frame of the locomotive and including walls arranged at right angles, a lever pivoted on, one of said walls and swinging adjacent the-other of said walls, a member directed through the other wall and engaging the lever to limit the pivotal movement thereof, a signal ele ment movable through a certain distance, a signal rendered operative by the element at oneliniit of its movement, means normally yieldably-holding the lever in one position,

aconnection between the. operating element and the lever shifting the operating element to the signal operating position when the lever is moved from its normal position, said member directed through said other wall of said bracket limiting movement of the lever when the operating member arrives at-its signal operating position and a connection between the opposite end of the lever and the truck of the locomotive, the connection between the lever and the signal operating member being flexible to thereby permit manual manipulation of the operating member to test the signal.

5. In a signalling device for indicating derailment of locomotive trucks or the like, a bracket mounted upon the frame of the locomotive and including walls arranged at right angles, a lever pivoted on one of said walls and swinging adjacent the other of said walls, a member directed through the other wall and engaging the lever to: limit the pivotal movement thereof, a signal element movable through a certain distance, a signal rendered operative by the element at one limit of its movement, means normally yieldably holding the lever in one position, a connection between the operating element and the lever shifting the operating element to the signal operating position when the lever is moved from its normal position, said member directed through said other wall of said bracket limiting movement of the lever when the operating member arrives at its signal operating position, a connection between the opposite end of the lever and the truck of the locomotive, comprising a link connected to the lever and depending toward the truck and provided upon its lower end with a vertically elongated eye and an arm secured to the truck and provided upon its upper end with a transversely extending head having a longitudinally extending slot in which the eye is engaged.

In testimony whereof I hereunto affix my signature.

HARLY s. JonNsoN.

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