US50725A - Improvement in lanterns - Google Patents

Description

R. M. MERRILL.

Lantern.

No. 50,725. Patented Oct. 31. 1865.

N. PETERS. Pmwmu n m Washingicn a a PATENT OFFICE.

' RUFUS M. MERRILL, OF CHICAGO, ILLINOIS.

IMPROVEMENTIIN LANTERNS.

Specification forming part of Letters Patent No. 50,725, dated October 31, 1865.

To all whom it may concern:

Be it known that I, RUFUs M. MERRILL, of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Lantern; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a vertical or front View of my invention. Fig. 2 is a representation of the lamp detached from the lantern-frame. Fig. 3 repre sents the globe or protector detached from the lantern.

Similar letters of reference indicate corresponding parts in the several figures.

The nature of my invention consists in, first, the peculiar construction of a lantern globe or protector in which the diameter of its base or lower part is equal to or greater than that of any other parts of the same, so as to admit it to be inserted in position within the frame or casing by passing it through the casing, and at the same time completely fill the circumference of the same without the appliance of any other device or material second, in a novel device whereby the lamp or oil-reservoir may be securely and readily attached to or disconnected from the lantern by a partial rotary movement of one part upon the other; third, in a novel arrangement whereby the height of the flame within the lantern may be regulated from the outside without removing the lamp for the purpose,

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents frame or casing of the lantern, constructed in the usual manner, the upper part, a, and the lower part, a, being connected securely by the guard-wires, by soldering, or otherwise.

B is the glass globe or protector, and is made of such a form that its greatest diameter does not exceed that of the bottom or lower part the toothed wheel from the worm-wheel hereinafter described.

f is the wick regulator, and to the end of this is secured a toothed wheel, which engages with the worm on the spindle g. This spindle is secured in a vertical position by bearings attached to the oil-cup, and extends downward through the bottom flange, J, of the lamp and terminates with a button, so that the height of the flame within the lantern may be regulated by simply turning thebutton.

To the two opposite sides of the oil-cup are soldered the springs H, extending downand outwardly a suitable distance, and corresponding slots or apertures h are made in the case a, into which the springs engage and securely connect the parts together. The lower ends of the springs are sloped toward one side, so that a partial rotation of the lamp upon the casing causes the springs to leave the slots, and thus disconnect the parts without the use of thumb-pieces or any direct pressure upon the springs. When turned in an opposite direction the form of the ends of the springs will prevent them from passing the slots after they have entered them, as the square end of the spring will strike against the metal at the end of the aperture and prevent further movement in that direction; or, if preferred, the springs may be-made of wire bent to the proper form andattached to the lamp and operated in co nnection with a pin secured to the casin g.

By this arrangement of parts and the use of the described globe many advantages are obtained, a few of which are the ease with which the globe can be removed from the frame for the purpose of cleaning or to insert a new one in case of breakagefltogethcr with the exceeding cheapness of construction of the frame or casing. There is also much less danger of breakage or accidental displacementthan when a more complicated arrangement is used, and no change is required in the frames as usually made to adapt them to be used with this adjustable globe.

The simplicity of thesprings and the ease with which they are operated, together with their perfect security give many advantages.

The device for regulating the height of the wick, owing to the absence of springs or movable bearings, is not liable to derangement of any of its parts by usage.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. As an article of manufacture, the withindescribed lantern globe or protector, having its maximum diameter at its base or lower part, substantially as and for the purpose shown and described. 1

2. The globe or protector B, in combination with the frame or casing of a lantern, and a device for holding it in position, substantially as shown and described, and for the purpose set forth.

3. Operating the connectin g-sprin gs of a lanl tern by a partial rotary movement of one part of the same upon the other, substantially in the manner shown and described, and for the the purpose set forth.

4. In combination with a spring or springs secured to one part of a lantern, the slots 71. or their equivalents on the other part, so that the two parts may be firmly locked together, or released from their connection by a partial rotary motion of one part upon the other, substantially as and for the purpose herein described and shown.

5. Attaching theburner to the lamp by means of a hinged collar, e, or its equivalent, in such a manner that it can have no material lateral or rotary motion in its collar, substantially as shown and described, and for the purpose set forth.

6. In combination with the burner D and regulator f, the worm-wheel and its spindle, arranged and operating substantially as described, and for the purpose set forth.

' RUFUS M. MERRILL.

Witnesses:

E. A. RANNEY, D. L. JUERGENS.

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