US1103546A - Signal-lamp. - Google Patents

Description

E. E). SZPER. SIGML LMP APPLIUATIE FILED JULY l5, 1913.

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FURMAN 1D. SPEAR, OF NEW YBRK, El. A

SSIGNOR TD RJSPER MNUFCTURING si nennen?.

Application iler?. July 15. 191.3. Serial No. 27753.24.

To ali 'ui/0m w may concern:

Be it known that i, Eemian U. Sienna., a citizen of the United States, residing at New York, in the county of New 'forli and State of New York, have invented a nevi and useful Improvement in Signaldiamps, of which the following is a specication.

This invention lrelates to signal lamps which are used mainly in railroad service, for instance, as classification lamps on locomotives, as marker lamps at the rear end trains, on semaphores and on switch stands. The conditions under which signal lamps are used for these and other purposes and the requirements which such lamps should uses it is desirable that the lamp should have a lens which has a field or horizontal spread of considerable Width, while for other uses a lens is desirable which concentrates the light in a beam and has a corresponding long range. For still other uses it is desirable that the lamp should have both styles of lenses, one which has a Wide, fanlike field or Spread and one which concentrates the light in a beam, as for instance on a switch stand Where a beeui or light is required for a straight main 'track and a wide. fan-like illuminated zone which covers one or more curved tracks joining the main track. t

The object of this invention is to producev a signal" lamp in which the flame chamber is composed of removable and interchantrew able transparent lens sections and opaque sections or panels, arranged circumferentially side by side, the transparent lens sections being constructed to spread the light and one or more of the Opaque panels or sections being' provided with a lens which concentrates the light in a beam.

ln the accompanying drawings: Figure 1 is a sectional elevation of a signal lamp provided with these improvements. 2' is a horizontal section on line 2-2, Fig. 1. Showing the lamp provided with tivo lens sections and tivo opaque sections. one of the opaque sections being; provided with a circular lens. Fig. 3 is a perspective view of one of the lens sections. Fig. 1i is a perspective view of the opaque section provided with a circular lens. Fig. is a horizontal section similar to Fig. 2, showing a lamp provided with one transparent section and three opaque sections.

Speeieetion of etters Patent.

which Patented dniy 14, 1914.

rihe frame of the lamp may be of ein,r suitable construction, for instance it may he constructed shown in the drawings or as shown in the application of Furman D. Spear, led September 1S, 1912., Serial No. 721.077, or in the application of Judson S. Finley, tiled .September 18, 1912, Serial No. 721,059.

.As shown in the f lraivings, the lamp fraaie comprises a base 10, upright bars 11 are secured at. their lower ends to the base, a breast 12 which is detachablv Secured to the upper ends of the bars by screws 1S entering tianges 14 on the bars, and a top 15 hinged to the breast.

The Haine chamber, as shown in Fig. 2. is composed of four sect-ions, two transparent lens sections 16, 16, and two opaque sections l?, 18, all of the same size and configuration so that these sections are interchangeable. The i'our sections together form a splicroidal flame chamber having its axis arranged vertier-.ily1 and having fiat ends. Each section has its side edges arranged in radial planes and'each lens section is constructed above and below its equatorial zone with horizontal refracting rings which project the rays of light in a anflike or spreading field or The opaque section 17 is provided With a circular lens 19 which is secured in a `goggle or collar surrounding an opening,r in the section. This lens is arranged in the proper reiation to 'the iiame and of proper construction to concentrate the light in a beam which issues from the lanipdat right angles to the vertical axis thereof. t'

The transparent lens sections 16 are .provided with horizontal refracting ribs arranged preferably on the inner side of the sections or are otherwise so constructed as to spread the horizontally in a fan-like or diverging TWhen each lens section extends over one-fourth of the circumference of the flame. chamber, the field or spread of the light emitted bv one lens section is practically'equal to 9G degrees. These lens sections and opaque sections form together a circular dame chamber which is preferably of spheroidal form, as shown, the same havingr horizontal upper and lower circular ends and increasing in diameter lfrom each end toward the middle.

The individual lens sections may be of the same color or of difierent colors and their number may be greater or less according to -or less than four.

circumstances, for instance there may be one, two or three lens sections and a corresponding number of opaque sections if the ame chamber is composed of four sections. The total number of sections may, however, be greater The adjacent side faces of the sections are so constructed as to form joints which are practically Water and air proof in order to prevent disturbance of the imnc under the Severe conditions under which signal lamps are used. For this purpose the adjoining la't sides of the sections are 'preferably each provided with a Igroove 21 which extends from end to end of the section and in which a packing strip 22 of asbestos or other suitable material is arranged.

The base of the lamp is provided with circular seat for the sections of the 'flame chamber and this seat is preferably provided with -a rubber gasket 23 on Which the secm tions rest. The upper ends of the sections may be tied together by a rubber gasket 24;. The breast 12 bears upon the gasket Qf and .holds the sections firmly in position.

pose, thusenabling the same kind of 25 repr nts the oil pot and 26 the burner, which paf may be of ang suitable construction and supported on the base of the lamp in any suitable manner.

.fis the lens sections and opaque section are alike in size and configuration they are interchangeable and a flame chamber of tbe desiredcharacter can be readily formed by selecting and combining the particular i s Vofsections which are necessary for the pun frame to be utilized for lamps having vari- ;ous combinations of sections.

` I claim as my invention:

.1. A signal lamp comprising a lens having the forniL of a spheroidal section. with its4 sides Varranged in radial planes, the section being constructed above and below its equatorial zone witn lrefracting; rings arranged circuinferentially and adapted toV project the rays of lign in a fan-like area'.

2. In a signal lamp, the combination with A a lamp frame, of a spheroidal anie chamberremovably secured thereinand composed of interchangeable transparent andv opaque able sections arranged circumferentally side provided with a circular lens. p

5. The combination Wlth a' lamp frame, or a lame chamber comprising interchangeable bv7 side one of which sections is o a ue and.

l i i transparent and opaque sections arranged circu,inferentiallj,7 side by side, one of which opaque sections is lens. a

6. The combination With'a lamp 'frame having a base and a movable top portion, of a removable sectional flame chamber arranged between said base and top portion andcomp'rising an opaque section having a circular lens,

'Witness my baud, this 7th day of July, 15H3.

FURMAN D. SPEAK.

W'it ieseos provided with a circular i

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