[go: up one dir, main page]

US457988A - Lens attachment for lanterns - Google Patents

Lens attachment for lanterns Download PDF

Info

Publication number
US457988A
US457988A US457988DA US457988A US 457988 A US457988 A US 457988A US 457988D A US457988D A US 457988DA US 457988 A US457988 A US 457988A
Authority
US
United States
Prior art keywords
lens
lanterns
guard
lens attachment
lantern
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US457988A publication Critical patent/US457988A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape

Definitions

  • the object of the invention is to provide a simple, cheap, compact, durable, and convenient lens and guard that may be readily adjusted, attached, and detached upon a tubular lantern and securelyconnected therewith, and when used will powerfully increase or intensify the light evolved from said lantern.
  • Figure 1 represents a front elevation of the lantern with my improved detachable guard and its lens attachment.
  • Fig. 2 represents a horizontal section of the same on line 1 2 of Fig. 1.
  • Fig. 3 represents a side elevation, also showing guard and lens.
  • Fig. 4 is a full-sized front view of the guard and lens.
  • Fig. 5 is a full-sized top edge view of the lens and a part of the guard-wire.
  • A representsthe glass globe of the lantern; B, the side tubes; C, the oil-pot; and D the lens, which may be concavo-convex or planoconvex, as shown, or it may have any other form or construction.
  • E represents the wire forming an elliptical guard.
  • the wire is first made to form a shoulder G against the edge or periphery of the lens, which shoulder extends along the face and edge of the lens for a short distance.
  • the wire is then bent over the edge of the lens to the other side,
  • F represents strips of concaved tin-plate to hold the top and bottom wires together and fit snugly around the side tubes at both ends of the transverse axis of the ellipse.
  • G represents in dotted lines the clasp or loop made around the inside edge'of the lens by the wires E.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lenses (AREA)

Description

(No Model.)
A. L. FRANCE. LENS ATTACHMENT FOR LANTERNS.
No. 457,988. Patented Aug. 18, 1891.
Wfiwtmea- I Ewe? 7.
wag; W W- 71 IRMA @fi' fy jg UNITED STATES PATENT OFFICE.
ALBERT L. FRANCE, OF MILLDALE, ASSIGNOR TO THE KENTON CAN COMPANY, OF COVINGTON, KENTUCKY.
LENS ATTACHMENT FOR LANTERNS.
SPECIFICATION forming part of Letters Patent No. 457,988, dated August 18, 1891.
Application filed September 3, 1890- S.eria1N'o.363,869. (No model.)
T0 aZZ whom it may concern.-
ances for use in connection with a tubular lantern; and the object of the invention is to provide a simple, cheap, compact, durable, and convenient lens and guard that may be readily adjusted, attached, and detached upon a tubular lantern and securelyconnected therewith, and when used will powerfully increase or intensify the light evolved from said lantern.
In the accompanying drawings, Figure 1 represents a front elevation of the lantern with my improved detachable guard and its lens attachment. Fig. 2 represents a horizontal section of the same on line 1 2 of Fig. 1. Fig. 3 represents a side elevation, also showing guard and lens. Fig. 4 is a full-sized front view of the guard and lens. Fig. 5 is a full-sized top edge view of the lens and a part of the guard-wire.
Similar letters of reference indicate similar parts in all the figures.
A representsthe glass globe of the lantern; B, the side tubes; C, the oil-pot; and D the lens, which may be concavo-convex or planoconvex, as shown, or it may have any other form or construction.
E represents the wire forming an elliptical guard.
To attach the lens to the wire, the wire is first made to form a shoulder G against the edge or periphery of the lens, which shoulder extends along the face and edge of the lens for a short distance. The wire is then bent over the edge of the lens to the other side,
forming a loop, clasping the lens and holding it secure and rigid in the guard.
F represents strips of concaved tin-plate to hold the top and bottom wires together and fit snugly around the side tubes at both ends of the transverse axis of the ellipse.
G, Fig. 4, represents in dotted lines the clasp or loop made around the inside edge'of the lens by the wires E.
It is evident that many slight changes which might suggest themselves to skilled mechanics could be resorted to without departing from the spirit and'scope of my invention. Hence I' do not limit myself to the precise construction herein shown.
What I claim is n The detachable combined guard and lens for tubular lanterns, consisting of top and bottom wires E E E E, elliptical in horizon- 'tal section and joined together by vertical concave tin-plate clasps F F on its transverse ends to fit snugly about the tubes B B of the lantern, and the top and bottom wires of the guard constructed to clasp the lens rigidlyin its embrace, substantially, as shown and described.
ALBERT L. FRANCE.
Witnesses:
B. P. HOLLEN, MARTIN Sonorr.
US457988D Lens attachment for lanterns Expired - Lifetime US457988A (en)

Publications (1)

Publication Number Publication Date
US457988A true US457988A (en) 1891-08-18

Family

ID=2526863

Family Applications (1)

Application Number Title Priority Date Filing Date
US457988D Expired - Lifetime US457988A (en) Lens attachment for lanterns

Country Status (1)

Country Link
US (1) US457988A (en)

Similar Documents

Publication Publication Date Title
US457988A (en) Lens attachment for lanterns
US1678137A (en) Casing having light-transmitting closure
JP2015129932A5 (en)
US457989A (en) Lens attachment for lanterns
US566255A (en) Lamp-shade holder
US838789A (en) Reflector.
US445155A (en) Charles l
US494135A (en) Lens attachment for tubular lanterns
US418037A (en) Tubular lantern
US1291510A (en) Lamp-shade.
US293586A (en) Half to william h
US1818252A (en) Lighting fixture
US681996A (en) Hunter's headlight or lantern.
US1212406A (en) Lamp-holder.
US529105A (en) Reflector and shade for lamps
US452857A (en) Lantern
US400763A (en) John s
US176563A (en) Improvement in lamp attachments
US794296A (en) Electric display-lamp.
US758716A (en) Mica lamp globe or shade.
US213389A (en) Improvement in hanging lamps
US639372A (en) Reflector for incandescent lamps.
US314657A (en) Ooooqoooo
US546411A (en) Lamp-chimney holder
US638530A (en) Shade-holder.