US38457A

US38457A - Improvement in lanterns

Info

Publication number: US38457A
Authority: US
Publication date: 1863-05-12
Anticipated expiration: 1880-05-12

Description

J. S. & T. B. ATTERBURY.

' Lantern.

Patented May 12 1863".

IHlIII u. PETERS, mu-Liibugnphlr. Wahington, n. c

' UNITED STATES PATENT ()FFICE.

JAMES S. ATTERBURY AND THOMAS B. ATTERBURY, OF PITTSBURG, PA.

IMPROVEMENT I'N LANTERNS.

Specification forming part of Letters Patent No. 38,457, dated May 12, 1863.

To all whom it may concern.-

Be it known that we, JAMES S. ATTER- BURY and THOMAS B. ATTERBURY, both of littsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Lanterns; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to *the accompanying drawings, making a part of this specification, in which Figure l is a vertical diametrieal section through a globe-lantern with our improvement applied to it. Fig. 2 shows the method of applying the reflector to the glass globe.

Similar letters of reference indicate corresponding parts in both figures.

Our invention consists in combining the advantages of a reflector with a lantern which is entirely surrounded with glass, by securin g the reflector directly to the glass body of the lantern, as will be hereinafter described.

To enable others skilled in the art to make and use our invention, we will proceed to de scribe its construction and operation.

In the accompanying drawings, A represents the glass body of what is denominated a globe lantern; and B is a metallic reflector, which is applied within the globe A, in a proper relative position with the flame of the lamp contained in the lantern and which is secured to this globe by means of a stem, a, which is secured to the reflector and passes through a perforation made through the glass, receiving on its outer end a confining-nut, d, as shown in the drawings. The circumferential edges of the reflector B bear upon the inside surface of the glass when the nut d is set up tightly, and thus the reflector is confined in its place within the lantern. A soft washer, b, may be interposed between the nut (Z and the outside surface of the glass A to prevent the accidental breaking of the glass in securin g the reflector to it. The perforation which is made through the glass A to receive the stem at of the reflector may be made by drilling, but itwill be found preferable to perforate the glass in the following manner: In the blowing of the globe A asmall teat or blister can be made in the glass at the desired point, and this blister, being made on theoutside of the globe, can be ground off on a suitable stone so as to leave a hole large enough to allow the stem at to pass through it. A perforation thus formed will make the glass much stronger at this point than a hole made by hand with the usual drill, and the glass will not be so liable to crack in securing the reflector to the lantern. By this simple arrangement we are enabled to practically apply a metallic reflector to a lantern which is entirely surrounded with glass, for the purpose of more perfectly reflecting and intensifying the rays of light in this kind of lantern. It will be seen that the reflector B, although securely confined in its place within the glass globe A, may be removed at pleasure for cleaning, by taking off the bottom G and removing the nut d, or, if it be desirable, a permanent fastening may be applied to the globe A, and the reflector secured to it by means of a sliding catch or other suitable fastening, which will obviate the necessity of removing the nut at every time it is desired to detach the reflector from the lantern.

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

1. Applying a metallic reflector to a lantern surrounded with glass, substantially as herein described.

2. Making the glass surrounding the lantern, or the lantern-glass, the support for the reflector, substantially as herein described.