US807940A - Locomotive-headlight. - Google Patents

Description

No. 807,040. PATENTED DEC. 19, 1905. MQGHEYNE JOHNSON.

LOCOMOTIVE HEADLIGHT.

APPLICATION FILED MAR.,7,.1905.

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Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed March 7, 1905. Qerial No. 248,841.

To ctZZ whom it may concern.-

Be it known that I, MoCHEYNE JoHNsoN, a citizen of the United States, residing at Drain, in the county of Douglas and State of Oregon, have invented new and useful Improvements in Locomotive- Headlights, of which the following is a specification.

This invention relates to locomotive-headlights, and particularly means for holding such devices that will automatically adjust themselves and assume such position when the engine carrying the same is rounding curves as to throw the light into the center of the track, with obvious advantages.

The primary object of the invention is to simplify the means for movably applying a headlight to the front of a locomotive and provided with a pendulous operating means which is adjustable and positive in its action.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter set forth.

In the drawings, Figure 1 is a side elevation of the forward extremity of a locomotive, showing a headlight thereon by the improved automatically-adjusting means. Fig. 2 is a detail perspective view of a headlight and the improved mechanism for adjustably supporting the same.

Similar numerals of reference are employed to indicate corresponding parts in the views.

On the upper portion of the front extremity of the boiler l of a locomotive an angular bracket 2 is disposed and has a forwardlyprojectinghorizontal arm 3. A second bracket 4 is attached to the front end of the locomotive and formed with an upwardly-extending arm 5, terminating in a horizontal step 6, arranged directly under the front terminal of the arm 3 of the bracket 2. In the front terminal of the arm 3 and the step 6 a light pivot rod or fulcrum 7 is disposed, and secured thereto are rearwardly-projecting arms 8 of a headlight 9, the latter being of the usual construction.

Projecting forwardly from the vertical portion of the bracket 2 is a horizontal fulcrum pin or rod 10, and below said rod the same part of the bracket 2 has a laterally-projecting horizontal guide 11 secured thereto by an arm 12, the guide being formed with a slot 13. The fulcrum pin or rod 10 extends through the intermediate portion of and supports a depending pendulum-bar 1 1, which is movable in the slot 13, the said bar swinging on the pin or rod 10. The upper end of the bar IA is formed with a vertical slot" 15, through which loosely projects the rear terminal of a limiting arm or rod 16, having a sleeve 17 adjustably disposed on the vertical light fulcrum rod or shaft 7, the sleeve 17 being held in immovably-adjusted position by aset-screw 18. The arm 16 controls the swing of the pendulum-bar 14 in accordance with the requirement of the adjustment of the light 9 and also renders the oscillation of the pendulumbar 14 regular and is used for controlling the range of the light to right or left, as may be required. On the lower extremity of the pendulum-bar 14 a weight 19 is adjustably secured and held by a set-screw 20. This weight maintains the pendulum-bar in perpendicular position. At times it may be desired to hold the pendulum-bar immovable and retain the headlight 9 in positive position for casting light in a straightline, and for this purposea set-screw 21 is inserted through the center of the front portion of the guide 11 and is adapted to bear against said pendulum-bar.

When a locomotive equipped with the improved headlight-supporting means strikes a curve, it takes an inclining position, and, as will be understood, the inside rail being lower than the outside rail will cause the mechanism set forth to operate to throw the headlight at a proper angle to dispose the lightrays thereof in the center of the track. The pendulum-bar 14 will always retain its perpendicular position and turns the light when an engine is rounding a curve in the direction that the engine inclines itself, and the more acute the curve the greater the variation in the height of the inside and outside rails, and therefore the engine will have a greater inclination and the adjustment of the headlight will be correspondingly increased. When the engine assumes anormal position on a straightaway track, the improved mechanism will automatically return to normal position, so as to bring the light directly in front of the engine. Theimproved mechanism can be readily applied to an engine now in use without varying the construction of the boiler or other part, and it will be understood that variations in the proportions, dimensions, and minor details of the several parts may be resorted to without departing from the spirit of the invention.

Having thus fully described the invention, what is claimed as new is 1. A headlight-support comprising a fixed element to which the headlight is pivotally connected, a lever pivotally connected to said element and carrying a weight at its lower end, a connection between the upper end of said lever and the headlight, a slotted member embracing the lever and adapted to limit its swing, and means carried by said member for securing the lever against movement.

2. A headlight-support comprising arms projecting from a vehicle, a headlight, arms projecting rearwardly therefrom, a pivot-rod connecting the respective arms from the vehicle and from the headlight, a lever carrying a weight at its lower end and pivotally supported by one of the arms projecting from the vehicle, the upper end of the lever being MOCHEYNE JOHNSON.

Witnesses:

W. A. PERKINS, J. G. PETERSEN.

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