US338074A - Magic lantern - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

F. E. IVES.

MAGIC LANTERN.

No. 338,074. Patented Mar. 16, 1886.

I nz/enor:

J'J'ed. 2.17 66 491 A118 JZZZoI'IzeL a (No Model.) 2 Sheets-Sheet 2.

P. E. IVES.

MAGIC LANTERN.

Ffdfi.

ted Mar. 16. 1886.

Winn ava) UNITED STATES PATENT GEEICE.

FREDERICK E. IVES, OF PHILADELPHIA, PENNSYLVANIA.

MAGIC LANTERN.

SEECIPICATION forming part of Letters Patent No. 338,074, dated March 16, 1886.

Application filed December 24, 1885. Serial No. 186,605. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK E. IvEs, a citizen of the United Stat-es, residing in Phil adelphia, Pennsylvania, have invented certain Improvements in Magic Lanterns, of which the following is a specification.

My invention consists of an improved construction of magic lantern which will occupy a very small space in its carrying-box, while when it is open the carrying-box will form the base for the working parts, as fully described hereinafter.

In the accompanying drawings, Figure 1 is a perspective view of the magic lantern arranged for use. Fig. 2 is a similar perspective view of the lantern when closed for transportation. Fig. 3 is a vertical sectiou,drawn to an enlarged scale,of the closed box, Fig. 2; and Fig. 4 is a perspective view illustrating the box and the detachable casing about to be inserted therein.

My magic lantern consists, mainly, of three portions: first, the box forming the combined carrying-case and supporting-base second, the reversible closingcover carrying the objective lens, slide-holder, condensing-lens,and jet-bracket; third, the sheet-metal casing to inclose the jet or burner.

The box A is of any suitable rectangular form, and consists of a bottom piece, a, an end piece, a and opposite sides a. On the inner faces of the sides, near the top, are provided guides or ways b, and over these, on the upper edges of the sides, are flanges 12, these ways and retaining-flanges constituting in effect grooves for the reception and guidance of the reversible sliding cover B. This coverB may be provided on one side with a suitable carrying handle or bail, d. To the otherside are secured the condensing-lens E, slide-holder F, and objective lens L. This objective lens is hinged to the coverB at I, so that it may be turned to the position illustrated in Fig. 3 to come conveniently within the box when closed, or can be turned out at right angles to the position illustrated in Fig. 1 for use.

To the rectangular back frame of the ob jective lens L are hinged two guards, l,which may be folded over each other, as illustrated in Fig. 3, or, when the objective is swung out to the position for use, can be folded out to form wings or inclosures to prevent the radiation of the light. To the cover B is also secured a spring-clip, 0, Figs. 1 and 3, which is for the purpose of retaining the objective Lin the closed position when folded down, as illustrated in Fig. 3. The outer end of the cover B is preferably beveled, as illustrated in Fig. 3, and to this beveled end is hinged the corner-piece K, which carries the slotted bracket Icin this instance of sheet metal-for the support of thejet or burner. To this corner-piece K is hinged the inclosing-flap D.

The jetor burner J (shown in the drawings) is intended for use with the oxyhydrogen light, and consists of the burner proper, f,having the usual nozzlesm, for the reception of the flexible tubes to convey the gas to the burner. The body of the burner is secured to the bracket is by means of a bolt and thumb-nut, k, Figs. 1 and 3, the bolt being adapted to a slot in the bracket and passing up through the body of the burner. The body of the burner is also provided with projecting pins 19, to re ceive a block, m, in which is vertically adj ustable (in any suitable manner) the holder M for the lime adjacent to the gas-jet.

The burner devicesjust described are adapted to be inclosed, when the lantern is in use, by a sheet-metal casing, S, Fig. 1, which is open at the bottom, and is provided at the top with an outlet covered by a shield, 8, above or below the outlet. In one side of the casing is a rectangular or other suitably-shaped opening, t, which will allow the passage of light to the condensing-lens, while the opposite side is provided with asuitably-hinged door,T. This casing is adapted to be adjustably mounted on the frame of the condensing-lens or in the box, as may be found convenient,when the lantern is in use, as illustrated in Fig. 1.

\Vhen the different parts are to be packed together for transportation, this casing is detached, and then the lime-holder M andjet J are detached from each other and from the bracket after the supply of gas has been cut off and the flexible tubes removed. Then the cover B, with its attachments, is Withdrawn, when the inclosing-case S can he slid horizontally into the box Abelow the ways b,as illustrated in Fig. 4. The jet and lime-holder are then laid inside the case, as illustrated in Fig. 3. The wings or guards Z of the objective having been folded inward,and the objective itself turned on its hinge down onto the cover B,the latter, with its attachments in the reverse position illustrated in Fig. 3,can now be slid into place, and the box thereby entirely inclosed, ready for transportation, as illustrated in Fig. 2. It will thus be seen that the box constitutes not only a carrying-case, but also a supporting-base for the operative parts of the lantern when the latter is to be used.

I claim as my invention- 1. The combination of the operative parts of a magic lantern with an inclosing-box having a reversible cover carrying some of said operative parts, substantially as set forth.

2. The combination of the inclosing-box having a reversible cover with an objective lens, condensing-lens, and slide holder mounted on said reversible cover, and a jet adapted to be adjustably secnredto the cover, all substantially as set forth;

3. The combination ofthe inclosing-box having a reversible cover, and carrying the lenses and slide-holder of the magic lantern,with the jet and the adjustable inclosing-casing for the latter.. 1

" 4. The combination of theinclosi'ng-box with

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