United States Patent Office
3,085,238 RAILROAD SAFETY LIGHT James F. Lewis, 4911 Rowan Road, KnoxviHe 18, Tenn. Filed Nov. 17, 1961, Ser. No. 153,121 1 Claim. (CI. 340—366)
This invention relates to railroad safety lights and more particularly to that one type of light known in the railroading profession as a Safety Blue Light which is placed at both ends of a train before men are allowed 10 to perform any work on the same.
The need and use of the safety blue light is clearly set forth in Rule 26 of the Standard Code of Operating Rules of the Association of American Railroads. The rule is generally spoken of as the "Blue Flag Rule" and it is, of course, well known in its entirety to every trainman in the United States.
Since all but emergency repair work is normally done in train yards, it is desirable to have a fixed location, namely, a given track for the train on which the repair work is to be done. It is, therefore, desirable to have a fixed pair of blue lights that will meet all of the requirements of the above stated Rule 26 and yet not require the personal attention of men who can best be employed in actual repair work on this track.
It is clearly an object of this invention to provide a railroad safety light that can permanently be secured to a section of railroad track and meet all the requirements of the said Rule 26 of the Standard Operating Code.
Another object of this invention is to provide a railroad safety light that can readily be controlled from either end of the railroad yard in which it is located or at the actual light itself if so desired.
Another object of this invention is to provide a railroad safety light that is provided with a separate indicator light that will not only serve to indicate when the power is on but will also keep the mechanism inside the safety light box from freezing the motor.
Another object of this invention is to provide a railroad safety light that has its mechanism totally inclosed and is thus not damaged by the weather.
Another object of this invention is to provide a railroad safety blue light that can be swingably controlled to warn and or signal men working on the train and or coming down the track from either direction if so desired.
Another object of this invention is to provide a railroad safety light that operates off the yards 110 volts electric supply line and thus does not have to depend on batteries for its operating power and light.
Still another object of this invention is to provide a railroad safety light that is located between the rails and is thus out of the way of workmen as they go about their repairing task on the train being worked on.
Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout the different views of the drawings in which:
FIGURE 1 is a pictorial view of a section of a typical railroad track with the center portion removed and the safety lights mounted between the rails.
FIGURE 2 is a top view of one of the safety lights with a portion of its box broken away to more clearly show certain detailed construction therein.
FIGURE 3 is a diagrammatic wiring view of this invention.
FIGURE 4 is a side view of the box as noted by the arrow and numeral 4 in FIGURE 2.
FIGURE 5 is a sectional view of the box and contents therein taken substantially along line 5—5 of FIGURE 2 as viewed in the direction indicated by the arrows.
Referring now to the drawings in detail, wherein for the purpose of illustration, I have disclosed a preferred embodiment of my invention wherein the reference character 10 indicates a waterproof box in which is mounted a rotary solenoid 11 on an upright 12. One side 13 of the box 10 has an opening therein for the inward extension of the blue lamp supporting shaft 14 which is rotably supported by an arm 15. A spur gear 16 is secured on the inward end of the said shaft 14 and is engaged with the gear 17 on the end of shaft 18 of the foresaid rotary solenoid 11 as is clearly shown in FIGURE 2 of the appended drawings. A blue light 19 in its cone-shaped housing has a convex lens 20 protected by a wire protector 21. The entire light assembly is, of course, secured as previously indicated, to the outer end of the said supporting shaft 14. A power indicator light 22 is removably mounted within the said box 10 which has an opening 23 in its top 24 in order to permit the said indicator light to be seen. On the opposite side of the box 10 from that of the said blue light 19 there is mounted three-way switches 25 and 26 as well as a water25 proof connector 27.
Looking now at FIGURE 1 of the appended drawings one will see that there are two of the above described boxes 1© and associated parts including the foresaid blue light 19. Each of the two units which are identical to one another and include all of the above described parts are each indicated on the appended drawing (the said FIGURE 1) by a reference character 28. The said units are firmly secured to the cross-ties 29 of the railroad track by means of lag screws 30 passing downward through a flange 31 located on each end of the said box 10 and on down into the said cross-ties 29. The units 28 are spaced according to the predetermined requirements of the particular railroad train yard in which they are used.
The actual construction of this railroad safety light has now been described, and it only remains to wire each one of the two units 28 together in the manner clearly shown in the wiring diagram and noted on the first one of the two sheets of the drawing by FIGURE 1 where it is obvious to everyone experienced in either the art of railroad electric signal installation and operation and/ or the electric arts in general, that by proper operation of the three way switch 25 the rotary solenoid 11 will cause the blue light 19 to swing about the axis of its supporting shaft 14 until it is casting its rays down the center of the railroad track herein noted for the first time by the reference character 32. FIGURE 1 of the appended drawings clearly shows that each one of the two lighting units 28 are located as said with the longig5 tudinal center of each blue light 19 being on the centerline of the said railroad track 28. The operation of the said three-way switch 25 can also, of course, cause each one of the blue lights 19 to shine directly upward or be swung inward toward each other if so desired. The three-way switch 26 actually turns the said blue lights 19 on and off as desired. The power indicator light 22 in each unit 28 is so wired into , the electric circuit of this novel invention that they immediately light up the second electricity enters the circuit from the main feed lines which enter each one of the box 10 of each one of the foresaid units 28 through cable 34 of the said waterproof connector 27. It can now be understood how this most useful invention is operated either remotely by electric control mechanism not shown in the appended drawings since it is not only obvious to those experienced in the arts but is also located at any desired place in the train yards.