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Publication numberUS396241 A
Publication typeGrant
Publication dateJan 15, 1889
Filing dateMar 23, 1888
Publication numberUS 396241 A, US 396241A, US-A-396241, US396241 A, US396241A
InventorsJabea F. Shawhan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Jabea f
US 396241 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 396,241. Patented Jan. 15, 1889.



SPECIFICATION forming part of Letters Patent No. 396,241,

dated January l5, 1889.

Application filed March 23, 1888. Serial No. 268,271. (No model.)

To all 1072/0772, t may concern:

Be it known that I, JABEA F. SHwnAN, a citizen of the United States, and a resident of Dayton, Montgomery county, Ohio, have invented certain new and useful Improvements in Head-Lights, of which the following' is a specification.

My invention relates to head-lights for use on locomotives, steamboats, and the like; and it has t'or its object to improve the construction and arrangement of such head-lights so that they will be adapted for use either in connection with the ordinary oil-lamp or with an electric lamp; and my invention consists, generally, ina head-light provided within the case with means whereby the oil-lamp may be used or whereby an electric current may be generated and an electric lamp used to furnish the illumination; and it further consists in the various constructions and arrangements o t' devices, substantially as hereinafter pointed out.

Referring' to the accompanying' drawings, Figure l is a side view showiircl a portion ot' a locomotive with the head-light in position and the necessary steam-connections from the head-light to the locomotive. ifig'. L is a rear view of a head-light provided with my improvements, parts beine' cut away to show the arrangement of the devices in the lamp.

In electric head-lighting' it has been deemed advisable to provide means whereby the oillamp may be readily interchane'ed with the electric lamp, so that if either lamp should fail the other may be quickly and readily adjusted for use. This idea has been proposed heretofore, and various arrangements have been made whereby either of such lamps can be used in the head-light, and while this accomplishes the obj ect desired to a certain extent it is very desirable that not only should the lamps themselves be inclosed within the ordinary case ot' the head-light, but that the generator furnishing' the current and themotor drivingv the `generator also be arranged within the case of thehead-light, and this latter feature constitutes one ot' the important points of my present invention.

Referring' to the accompanying' drawings, l represents the ease of an ordinary head-light,

such as is usually carried in front ot' a locomotive, and 2 is the ordinary parabolic retlector ot' said lamp.

3 represents what is ordinarily termed the base-board ot' the head-light` and this is usually arranged to slide in and out of the head-light case, and as shown in the drawings itis provided with a beveled cdc'c, l, engaging' under the lips or inclnes 5, which hold it in posit-ion in the head-light case. Mounted upon this base-board is the reservoir ti of the ordinary oil-lamp, having' a burner, 7, the end ot' which projects through an opening', S, in the under side of the parabolic reflector, and is arranged so that the flame will be in the focus of theretlector, Thisburm'fr-tip is also constructed so as to support an electrode` il, which will constitute the negative ('lm-trodtif of the electric lamp when such lamp is used, and this electrode is arranged in such a manner as not to interli'ere with the use ot' the oillamp to anyextent, and itmaybe constructed in a manner shown more particulz'u'ly in my application Serial No. Ltt, and it will be understood that this oil-burner is intended to remain in its position with relation to the reiiector whether oil is used or whether electricity is used to furnish the illuminat ion. Also mounted upon thebase-board l is the electric generator itl, the engine or motor ll, tor driving said generator7 and an elrlrctric lamp, 12, supplied with electricity from the generator, and these devices, while they .may be ot' various specite constructions, are arranged in such a position on the base-board that when the base-board is in place in the head-light they will occupy the space between the retlectol' and the sides or rcarot' the case of the head-light.

In the prcsentinstance I have ind icated an electric lamp havingl a regulat ing-magnet, 12), controlling' the feed ot the upper electrode, lt, which is carried on an arm, l 5, on a screwshatt, l t, and the positive electrode l-t is shown extending' through an opening', lT, in tho upper part ot the reflector, so that it will be in operative relation to the negative electrode il.

lVliile any form of elect rie lamp suitable for the purpose may be used, I have illustrated in a general way the construction of a IGC) lamp substantially such as is shown in my application Serial No. 268,207, in which the upper carbon has a positive feed, and, while any suitable connections may be used, in the present instance I connect this feed directly with the motor ll by means of a flexible shaft, lS, operating a worm, 19, gearing with a crank-wheel, 20, which is arranged to rotate the screw-shaft l0 in accordance with the variations in the current of the lamp and controlled by the regulating-magnet 13.

lVhile various means may be used to drive the generator, I have indicated in the drawings a rotary steam-engine, which is connected directly with the shaft 2l of the armature of the generator, and in order to supply motive power for said engine I have shown a pipe, 23, extending through the frame of the head-light and under the casin g 2a of the boiler of the locomotive to the steam-dome or other suitable place of connection with the boiler. An exhaust-pipe, 25, also extends through the head-light casing and enters the smoke chest or drum of the locomotive, so that steam can be exhausted directly therein in the usual way. rIhese pipes .may be connected with the motor by detachable connections-as pipe couplings or unions indicated therein-so that by simply unscrewing the connections the whole apparatus carried on the base-board may be removed from the case of the head-light.

A suit-able valve may be arranged in any convenient position-as in the cab of the engine-so as to control the motor-fluid passing through the pipe 23.

The rear of the reflector is preferably mounted upon a standard, 2G, secured to the base-board, it being cut away in the drawings to better illustrate the position of the oil-lamp.

It will be understood, of course, that I may make use of any suitable motor or motive power for ruiming the generator, as the particular kind of motor used is not essential to my invention, the gist of this feature of which consists in mounting the motor, generator, and lamps upon the same removable base-board.

From the above ihe principal object ofmy invention will be appreciated, and it will be seen that by my arrangement all the operative parts of the lamps, whetherthe oil-lamp or the electric lamp is used, and the motor and generator for operating them are not only mounted upon a single base-board, so as to be readily removed from the head-light, but all these parts are fully protected from damage from the elements or dust or otherwise by the inclosing-case of the head-light, and all outside electric connections and arrangements of motor and generatoren the engine outside the head-light are avoided. Moreover, as most of the stand ard head-lights in use to-day are provided with a base-board similar to that shown, my invention may be readily applied to old head-lights by simply arranging the parts or devices substantially as indicated and inserting them into the head-light case.

Another advantage resulting from this construction is found in the fact that the reflector and both the oil and the electric lamps being fixed to the same base-board, when once their position is adjusted they will occupy the same relations to one another, and there is little or no possibility of their getting disarranged.

From the above it will be seen that my invention is not limited to the use of any specitic form or construction of lamp or accessories, as they may be varied wit-hout departing from my invention by any one skilled in the art.

Ihat I claim isl. The combination, with the case of a headlight, of an ordinary oil-lai np, an electric lamp, a generator supplying current to said flamp, and a motor for operating the generator, the whole being inclosed within the case of the head-light, substantially as described.

2. The combination, with the case of a headlight, of a base-board, the whole being inclosed within the case of the head-light supporting an electric lamp, a generator for said lamp also supported on the base-board, and a' motor for driving said generator also mounted on said base-board, substantially as described.

3. In a head-light, a base-board having a standard supporting the parabolic reflector, an oil-lamp attached to said base-board, the burner of which extends through the lower opening of said reflector, an electric lamp supported on the base-board having one electrode extending through the upper opening of the reiiector, a generator for said lamp, and a motor driving said generator, the whole being inclosed within the head-light case, substantially as described.

et. The combination, with a locomotive-engine, of a head-light mounted thereon, an electric lamp, a generator therefor, a motor operating the generator, all being inclosed in the head-light, a pipe leading from said headlight to the source of power on the locomotive, and another exhaust-pipe leading from said head-light to the smoke chest or drum of the locomotive, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.




nino. H. GRAHAM.



Cooperative ClassificationB60Q1/50