US939754A - Lens-carrier for lanterns. - Google Patents

Description

P. 13.3mm. LENS CARRIER FOR LANTERNS.

APPLICATION FILED MAR.27,1909.

Patented Nov. 9, 1909.

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UNITED STATES PATENT OFFICE.

FURMAN 1). smart, or BROOKLYN, YORK.

LENS-CARRIER FOR L ANTERNS.

Specification of Letters Patent. I

Patented Nov. 9, 1909.

Application filed March 27, 1909. Serial No. 486,072.

f r Lanterns; and I do hereby declare the f owing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the construction of lanterns, and has for its object to pr0- I a surface adjacent to which the lantern may a 'vide'simple, strong, compact and durable means for mounting a lens or the like thereon and for steadying the lantern whensuspended to permit the light projected through the lens to be thrown 1n the desired direc-v tion.

To this end the main feature of my invention, .generally stated, consists in combining with alantern, a ring or collar which surrounds said lantern, said collar being provided upon one side with devices for securing a lens thereto and being provided on the: side opposite the said vlens'securing devices with outwardly projecting means affording bearing points adapted to engage.

be hung, to thus prevent the lantern from turning, said bearlng points being upon op posite sides of the principal axis of the lens.

There are other, minor, features of invention, residing in particular combinations and elemental constructions, all as will hereinafter more frilly appear.

Inthedrawings chosen for the purpose of illustrating my invention, the scope whereof they occur.

is pointed out in the claims, Figure l is a side elevation of a lantern provided with a lens carrier embodying-my invention; Fig. 2 is a horizontal section taken in the plane of the line 22, Fig. 1; Fig. 3 is a vertical central section of the lens carrier showing its mode of application to the specific form of lantern illustrated in connection therewith, portions of the lantern being shown in side elevationand portions being shown in vertical central section; and Fig. 4: is a perspective view ofthe lens carrier.

Like symbols refer to like parts wherever I will now proceed to describe my invention more fully, so that others skilled in the art to which it appertains may apply the same.

As my invention is especially useful with lanterns having swiveled suspending means, I have illustrated it as applied to a miners lamp, which is a type of lantern in which such swiveled suspending means isvery freguently employed.

In the drawings, B the wick, C the glass chimney, D the gauze cap, E the draft ring, and F the perforated metallic guard frame of a miners lamp. These several parts, in the form shown, are maintained-in proper relation by means of an internally threaded ring I which is secured to the lower ends of the chimney prowhich engages an externally threaded upwardly extending ring attached to the oil cup A. When the guard frame is screwed down upon the oil cup, the ring 3 at the upper ends of the protecting bars'Qf presses upon the shculdered collar 1 at the base of the gauze cap D andthus causes the said cap to be tightly confined to the chimney and the chimney to be effectually secured tothe oil cup, asbestos packings being" usually interposed between these parts.

.The lantern may be suspended by means of a hook 4 which is connected to an eye 5 that is swiveled in the center of the top plate 6 of the guard frame F.

The lens carrier G consists of a 'body portion which is provided with means for securing a 'lensfthereto and with projecting portions or members which extend outwardly from the eriphery of the body portion sufiiciently ar so that the straight line connecting their outer extremities does not intersect'said body portion. As shown, the body portihn of the lens carrier is preferably form as a collar 1*- which embraces the lantern and which is detachably secured thereto, the collar being preferably of such C to remain uncovered, thus permittin the lantern to shed white light and be use for ordinary .lpurposes even when a colored lens or coloret glass disk is meunted in the lens frame. In the special fof of lantern illustrated in the drawin s the lens carrier is de tachably mounted t er'eon by being interposed between the draft rin E and the threaded ring l 'of the guard rame F.

The collar 1 is preferably of tapering creases the rigidityiof the structure and'aftecting bars 2 of the guard frame F and form, as such a construction not only infords-a convenient means for locatinga com-- A indicates the oil cup,

height as to permit a portion of the chimney said collar being cut away so as not to ex-v tend across 'the lens aperture in the frame. For the .purpose of stiffening and strengtheningthe lens frame, as well as to afford a convenlent means for properly positioning lenses of comparatively long focal distances, and also for the purpose of intercepting and reflecting through the lens some of the rays of light which otherwise would pass outside I of the periphery of said lens, it is preferred to form the lens; frame 2 wlth a tubular marginal flange or screen which extends from the lens inwardly toward the body portion or collar 1% of the lens carrier G and 1s of such length and form as to permit; its

inner end to terminate adjacent to the lantern frame.

The lens Hanay be conveniently secured to the lens frame 2' by means of a split hoop 3 the ends of which are drawn together by a screw and nut, as will be readily understood.

In .order that the light projected by the lens may be thrown in the desired direction when the lantern is suspended adjacent to awall or the like, the lens carrier G is provided with projecting portions 4 4 which extend outwardly from'the collar 1' sufficiently far to prevent the intermediate portion of said collar from coming in contact with such adjacent wall, the lantern beingthus prevented from turning and the light from the lens being. consequently steadily projected in the proper direction. The projecting bearing members 4 which prevent the rotation of the :lanternunder such conditions, may be,

and preferably are, connected as shown to form a plate having a strai ht outer bearing face'which extends across t 1e principal axis of the lens, said plate extending outwardly from the upper end of the collar 1 to thus assist in stiffening the structure.

-Whensupplied with .a lens of the proper color, a lantern such asillustrated 1n the drawings forms an efficient tail light for mine cars or the like, the suspending hook 4 of the lantern beingsim ly hooked over the 7 rear end of'the car body in such manner that I the rearwardly extending plate forming the projections 4' contacts with said body and prevents the accidental turning of the lantern.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A lens carrier comprising a collar, a lens frame rigidly mounted upon and projecting outwardly from said collar, and projecting bearing members extendin wardly from the periphery of said col ar, the straight line connecting the outer extremioiltties of adjacent projecting members lying outside the periphery of the said collar.

2. A lens carrier comprising a collar, a lens frame secured to one side of the collar, and a bearing plate connected to said collar and extending outwardly from the periphery thereof on the side opposite the said lens frame.

3. A lens carrier comprising a tapered col lar, a lens frame secured to said collar, a lens mounted on said frame, and projecting bear w ing members extending outwardly from the periphery'of said collar. i

A 4. A lens carrier comprising a tapered,collar, a lens frame secured to said collar and provided with a tubular screen, a lens mount.

"ed on said frame, and projecting bearing members secured to said'collar and extending outwardly beyond the periphery thereof.

5. The combination with a lantern, of means forflexibly sus ending the same, and a lens carrier mounte on saldlantern, said lens carrier comprising a collar embracing the lantern, a lens frame secured to said collar, a lens mounted on sa d ra e, d p ojecting members extending outwardly -from the periphery of said collar upon opposite sides of the axis of the lens aperture in the lens frame.

6. The combination with a lantern rovided with a chimney, of means for flexibly suspending said lantern, and a lens carrier mounted on saidlantern, said lens carrier comprising a collar which is of less height than the chimney and which embraces the lantern, a lens-frame secured to said collar,

a lens mounted in said lens frame, and proectin thereof on the side opposite the sai lens frame. Y

-In testimony whereof I affix my'signature,

in presence of two subscribingwitnesses. FURMAN n. SPEAR.

Witnesses: I

WM. T. ARMOUR,

- O. FREEMAN.

members secured to said collar and 1 exten ing outwardly beyond the periphery

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