US261915A - Lamp or lantern - Google Patents

Description

(No Mdel.) f

J. H. EWINGrl 8u AE. L. BILL.

..,LAMMReLANTBNp No. 261,915. Patented Aug. 1, 1882.

UNITED' STATES PATENT trice..

JOHN HQEWING AND EDWARD L. BILL, OF WHEELING, WEST-VIRGINIA.

LAMP OR yLANTERN.4

SPECIFICATION forming part of Letters Patent No. 261,915, dated August 1, 1882.

Application filed June 23, 1882. (No modell To all whom it may concer/n Be it known that we, JOHN H. Ewnve and EDWARD L. BILL, of Wheeling, in the county ot' Ohio and State of West Virginia, have invented certain new and useful Improvements in Lamps or Lanterns; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the' art to which it per'- tains to make and use the same.

Our invention relates to an improvement in globes, cylinders, chimneys, shades, and other articles of glass employed to shield the llames of lanterns and lamps, the object ofthe invention heilig to attach lenses to articles of the above description in suchmanner as to render them independent of molecular changes in said articles and to concentrate and transmit the maximum amount of light.

Further objects of our invention are lo provide means for coloring and for entirely intercepting the luminous pencils emanating from lanterns, lamps, and other sources ot' light.

With these objects in view our invention consists in certain detail of construction and combinations of parts, as will be hereinafter described, and pointed ont in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of a .lantern-globe having a lens attached to it by devices constructed in accordance with our invention. Fig. 2 is a view in vertical cross-section thereof. Fig. 3 is a View of one of the modified forms which our invention may assume. Fig. et is a view showing one adaptation of our invention to coloring the transmitted light. Fig. 5 is a view illustrating means for accomplishing the same result. Fig. 6 is a view in vertical cross-section of a globe having a lens attached to it and provided with a screen for interceptin g the light transmitted through the lens, and Fig. 7 is a'view containing a mcdication of the device showu in Fig. 6. A

A represents a lantern-globe, provided with a circular aperture, B, formed in it during the process of its manufacture or after its completion.

Gis a lens of any desired and approved type, and of approximately the same size as the aperture in the globe. The said lens is secured in position in which it is interposed in the luminous pencils passing through said aperture by a metallic annulus, D, provided with a flange, E, adapted to engage with its periphery, and with an inwardly-projecting rim, F,

1 arranged to be outwardly deiiected, as shown in the drawings, to engage with those portions of the inner face of the globe which surround the aperture B.

Instead of constructing the annulus as described and deilecting the lip E after the introduction of the same into the aperture, the

annulus may be made in sections adapted to.

be secured together when brought in conjunction from opposite sides of the aperture. One form of sectional annulus is shown in Fig. 3 of the drawings, wherein the tlangeE is shown t0 be connected with a ring, G, located within the globe, byV screws H. If desired, also, the parts of the annulus located within and without 'the globe may be adapted to be screwed together. Again, rings substantially like the ring'G may be secured to the inner and outer faces of the globe by screws passing through the aperture and connecting them, a ilange adapted to inclose a lens' being hinged t the outer of said rings. This construction is desirable, in that the interior of the globe is rendered readily accessible, permitting the light to be attended with little trouble.

Lenses of white or of colored glass will be employed, according as it is desired to transmit white or colored light. 1f colored light is the desideratum, lenses of solid color may be used, or, preferably, White lenses flashed with ruby, emerald,.or other colored glass. The coloring of the transmitted light may also be effected by the use of plates ot' colored glass. One method of coloring the light in; this manner is illustrated in Fig. 4, wherein a disk, I, of colored glass, is used in lieu of the rim D of the annulus, said disk being attached to the lens-holdin g ilange E by rivets or screws J extending through the aperture in the globe. Another way of effecting the same result in a diierent mannen is illustrated in Fig. 5 ot' the drawings, which shoWsaconcavo-convex plate, K, of colored glass, mounted in a metallic rim,

L, adapted to be secured to a 'lens-holding l a flange formed like the ange M shown in Fig. 7 of the drawings.

Itis often desirable, especially in signaling, to entirely intercept the luminous pencils, and for this purpose we employ screens, forms of which are shown in the last three figures of the drawings. The screen O consists ot' a concavoconvex plate of metal provided with a rim, P, adapted to be screwed over the modified lensholding flange M shown in Fig. 6.of the drawings, said flange being provided with screwthreads Q. The rim R of the screen shown in Fig. 7 ofthedrawings is provided with springarms T, adapted to be engaged with a suitable ledge, U, formed yon the lens-holding flange N. If it is desired to have a screen permanently 4secured to the outer face of the globe, a screen -integral with them are liable, owing to inequalities in the thickness of the glass, to crack during those contractions and expansions consequent upon the changes in temperature; but in globes having lenses attached to them in accordance with our invention the molecular changes above alluded to take place so uniformly that this objection is entirely obviated. Again, by employing globes having apertures formed in them the lenses receive the luminous pencils directly from the light, and none is lost by being absorbed by glass interposed between the lenses and light; and, linally, lenses molded independently possess much higher value as concentrators of light than those made integral with globes in the process of their manufacture.

In view of the numerous modifications suggested we would have it understood that we hold ourselves at liberty to make such changes and alterations as fairly fall within the spirit and scope of our invention.

Having fully described our invention, what 5o we claim as new, and desire to secure by Letters Patent, is-

1. The combination,with a globe or its equivalent having one or more apertures formed in it, of lenses and devices attached to the globe and adapted to engage with the lenses and to interpose them in the luminous pencils passing through said apertures, substantially as set forth.

2. The combination,with a globe or its equivalent having one or more apertures formed in it, of lenses and metallic annuli attached to the globe and adapted to engage with the peripheries of the lenses and to interpose them in the luminous pencils passing through the said apertures, substantially as set forth.

3. The combination,with a globe or its equivalent having one or more apertures formed in it, of lenses and metallic annuli located in said apertures and provided with flanges to clasp the peripheries of the lenses, and with rims to engage with the inner faces of the globes, substantiallyas set forth.

4. The combination,with aglobe or its equivalent having one or more apertures formed in it, of lenses, devices attached tothe globe and adapted to support said lenses in the luminous pencils passing through the apertures, and plates of colored glass arranged to colorV the light transmitted through the lenses, substantially as set forth.

5. The com bination,with a globe or its equivalent having one or more apertures formed in it, of lenses, devices attached to the globe and adapted to support the lenses in the luminous pencils passing through said apertures, and screens to intercept the light ytransmitted through the lenses, substantially as set forth.

In testimony whereof we have signed this specification in the presence ot' two subscrib- 9o ing witnesses.

JOHN HENRY EVVING. EDWARD L. BILL.

Witnesses:

J As. C. BAKER, WM. P. ADAMS.

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