US1631112A - Locomotive headlight - Google Patents

Description

June 7 1927.

c. AALBORG LOCOMOTIVE HEADLIGHT Original .Filecl. Oct, 27. 1923 INVENTOR Chris f/afl Aolbo/y WIT m NESSES:

ATT'oRNEY Patented June 7, 1927.

UNITED STATES 1,631,112 PATENT OFFICE.

CHRISTIAN AALBORG, .OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC MANUFACTURING GOMAPNY, A CORPORATION OF PENNSYL- VANIA.

LOCOMOTIVE HEADLIGHT.

Application filed October 27, 1923, Serial No. 671,232. Renewed April 27, 1927.

' or corrode. It is therefore necessary,in devices of this character, to provide a moisture I and dust proof closure for the reflector case. One object of my invention is, therefore,to effectively seal the reflector case against dust and moisture.

Another object of my invention is to provide a structure in which the sealing members shall be self-adjusting and shall effectively maintain the seal.

Another object of my invention is to provide a structure which shall be readily accessible for adjustment and removal of the lamp.

Hitherto, devices of this character have been provided with means for excluding dust and moisture which consisted of overlapping flanges. The obvious disadvantage of this structure has been that the joint was not perfectly tight, and did not prevent deterioration of the lighting properties. Such devices have been provided with a door and a lock and a washer between the door and the case, but these had but one point of adjustment. While such a structure provided an adequate closure when new, the wear resulting from the motion of the parts over each other caused the closure to leak on one side. This could only be remedied by replacing the old washer with a new one. In

other words, there was only a manual means of adjustment. 7

My invention is directed to a structure employing resilient washers and a self adjusting closure which prevents leakage of dust and moisture to both the lens and the door joints.

Specifically, the adjusting means is a flange on the door, a resilient sealing gasket between the door and case and a floating hinge. By reason of this arrangement, I

effect a tight closure which is constantly maintained as such even after the parts have been sub ected towear.

Throughout the dra'wmg, constltutlng a "part hereof, and in which like reference characters designate like parts,

Figure l is a side elevational view, partially in cross-section, of an assembled reflector case and door; a

Fig. 2 is a rear elevational view showing the hinge brackets;

Fig. 3 is a partial side elevational view showing the position of the hinge bolts when the door is open b Fig. 4 is a cross-sectional view of the hinge 0 t; Fig. 5 is a view showing means for locking the door, and

Fig. 6 isan elevational view thereof.

The headlight consists of a hinged case 1 and the door 2. The door 2 is provided with a lens 3, and is held closed by means of winged nuts 4 and swivel bolts 5. In the door 2 is a channel 6 containing a resilient packing which bears on the outside surface of the lens. The lens is held in place against the packing by means of a clamping ring 7. Nearer the periphery of the door there is another channel 8 containing a resilient packing. The channel 8 opens toward the reflector case and is arranged to receive a flange 9 on the reflector case 1. The door swings on floating hinges which are slidably mounted on brackets or projections 10 on the reflector case. Each of the floating hinges consists of an eye-bolt 11 provided with a stop member or shoulder 12 which rests on the bracket 10 when the door is open, and is moved away from the bracket when the door is closed. On the opposite side of the bracket, the hinge bolt has mounted upon it a helical spring 13 which is maintained in compression between the bracket 10 and the lock nuts 14.

In opening the door, from the position shown in Fig. 4, the hinge bolts are first drawn toward the seats of the brackets 10 by springs 13. This movement isstopped by the engagement of the stops 12 on the hinge bolts with the brackets. From this point, the door is opened in the usual way. In closing, the edge of the door nearest the hinge bolts first comes in contact with the rim of the reflector case, and the flange on relation to the case. Upon complete closure, the door acts as a lever and draws the hinge bolt through the bracket and the spring is further compressed. i

It will be noted that I have provided a structure With a small number of parts which are easily accessible. The door is held in the desired relation to the case, and produces a tight closure by means of the resilient Washers. A floating spring structure also provides an arrangement by which a tight closure is maintained atall times, even after the parts have been subjected to considerable Wear.

Although I have described a specific em bodiment of my invention, I do not limit my invention thereto since various modifications thereof Will suggest themselves to those skilled in the art Without departing from the spirit of my invention, the scope of Which is set forth in the annexed claims.

I claim as my invention:

1. The combination with a reflector case,

an apertured light-transmitting door and a. lock for fastening said door to said case, of

a hinge on said door, said hinge comprising retaining members rigidly attached to said door and perforated brackets rigidly. attached to. said case eye-bolts slidably' mounted in said brackets, springs mounted on said eyebolts tending to hold said door and case together, means for confining said springs against said brackets and means in said eyecase, resilient means in said channel and a. hinge exterior to said door to effect a dust' and moisture proof closure of said'dooi, said hinge comprising a perforated bracket r gidl mounted on said door, an eye-bolt .slidab y mounted on said case and hingedly mounted on said bracket, stop means in said eye-bolt to limit the movement thereof, a spring mounted on said bolt to maintain the bolt in tension and means for locking said door in closed relation to said case.

In testimony whereof, I have hereunto subscribed my name thisQOth day of October, 1923'. v

CHRISTIAN AALBORG.1

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