US1497678A - Focusing device - Google Patents

Focusing device Download PDF

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Publication number
US1497678A
US1497678A US628999A US62899923A US1497678A US 1497678 A US1497678 A US 1497678A US 628999 A US628999 A US 628999A US 62899923 A US62899923 A US 62899923A US 1497678 A US1497678 A US 1497678A
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United States
Prior art keywords
thimble
reflector
sections
focusing device
spring
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Expired - Lifetime
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US628999A
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Charles E Godley
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Edmunds and Jones Corp
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Edmunds and Jones Corp
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Priority to US628999A priority Critical patent/US1497678A/en
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    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources

Definitions

  • This invention relates to means for adjustably supporting the light bulbs of electric lamps relative to the foci of the reflectors of such lamps, and its object is to provide a simple device of this character which can be produced at low cost, which will permit of sufficient adjustment of the light bulb, and which will hold the light bulb in its selected position.
  • Fig. 1 is a longitudinal section of a reflector with one type of this focusing device attached thereto.
  • Fig. 2 is an elevation of the central portion of the reflector, the dotted lines indicating the supporting thimble.
  • Fig 3 is a side elevation and Fig. l an end elevation of the supporting thimble shown in Fig. 1. '7
  • the distance between the pins which project laterally from the bases of light bulbs and the centers of illumination of such bulbs varies greatly in different types of bulbs so that the supporting sleeve for the bulb usually called the connector sleeve, should be slidably mounted in the reflectors of the lamps in which such bulbs are used in order that any available light bulb may be em ployed.
  • These centers of illumination are not always in the axes of the base of the bulbs and a transverse adjustment of the light bulbs should therefore be provided in order that these centers of illumination may be brought to the foci of'the reflectors in which they are mounted.
  • a reflector 25 is formed with a central opening 26 to receive the connector sleeve 16 which has a spherical band 17
  • the reflector is formed with notches 27 connecting with the central opening 26 and the depth and width of these notches are about the height and width of the small tongues on the inner ends of the sections 29 which are segments of a cylindrical thimble and have end flanges 30 and longitudinal flanges 31.
  • a spring 32 is mounted on this thimble between the end flanges 30 and the longitudinal flanges 31.
  • the band 17 Slidable within the thimble and held in any desired. position by the sections 29 under pressure of the spring 32, is the band 17 which has a spherical surface so it may be readily turned Within the thimble.
  • the connector sleeve receives the light bulb 13 which may be moved to any desired position within the limits of adjustment by sliding or tilting the connector sleeve within the thimble, the bulb being held in position by the pressure of the sections 29 due to the pressure of the spring 32.
  • thimble sections are stamped from sheet metal, the distance between the inner surfaces of the out-turned ends of the tongues 28 to the ends 33 of these sections being about equal to the thickness of the reflector 25 so that when the tongues 28 are placed in the notches 27, the thimble will be properly positioned.
  • the interior diameter of the thimble is less than the diameter of the spherical band 17 of the connector sleeve and the spring will therefore cause proper pressure and friction to hold the bulb 13 in position.
  • a focusing device for electric lamps the combination of a reflector having an opening and shallow notches extending therefrom, a connector extending into said opening and embodying a circumferential spherical portion, a thimble attached to said reflector and embodying a series of sections enclosing said sleeve, and a circular coil spring extending around the outside of the sections of the thimble and forcing them against the spherical band of the sleeve, said sections having tongues at their inner ends adapted to pass through the notches in the reflector and to be bent over to secure the thimble to the reflector.
  • a focusing device the combination of a reflector having an opening, a connector sleeve extending into said opening, a cylindrical thimble attached to said reflector to receive the connector sleeve and comprising a series of independent sections, each having a longitudinal flange along one edge and a transverse flange at its outer end, and a spring to draw the sections together around the sleeve, said spring being positioned between thelongitudinal and transverse flanges on said sections.
  • a focusing device for electric lamps the combination of a reflector having a circular opening and radial notches extending therefrom, a connector sleeve extending into said opening, a cylindrical thimble attached to said reflector to receive the connector sleeve and comprising a series of independent sections each embodying a tongue adapted to extend into a radial notch at said opening in the reflector, each of said sections having a longitudinal flange along one edge and a transverse flange at its outer end, and a circular coil spring to draw the sections together around the sleeve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

June 17 1924.
C. E. GODLEY FOCUSINGDEVIGE Filed March 51. 1923 ATTORNEY Patented June 17, 1924.
UNITED STATES PATENT OFFICE.
CHARLES E. GODLEY, OLE DETROIT, MICHIGAN, ASSIGNO'R TO EDMUNDS AND JONES CORPORATION, 015 DETROIT, MICHIGAIN, A GORPOR-ATION OF NEW YORK.
FOGU SING DEVICE.
Application fi1ed March 31, 1923. Serial No. 628,999.
To all whom it may concern:
Be it known that I, CHAnLns E. G oDLEY,
a citizen of the United States, and residing at Detroit, in the county of Wayne and 5 State of Michigan, have invented a new and Improved Focusing Device, of which the following is a specification.
This invention relates to means for adjustably supporting the light bulbs of electric lamps relative to the foci of the reflectors of such lamps, and its object is to provide a simple device of this character which can be produced at low cost, which will permit of sufficient adjustment of the light bulb, and which will hold the light bulb in its selected position.
In the accompanying drawing, Fig. 1 is a longitudinal section of a reflector with one type of this focusing device attached thereto. Fig. 2 is an elevation of the central portion of the reflector, the dotted lines indicating the supporting thimble. Fig 3 is a side elevation and Fig. l an end elevation of the supporting thimble shown in Fig. 1. '7
Similar reference characters refer to like parts throughout the several views.
The distance between the pins which project laterally from the bases of light bulbs and the centers of illumination of such bulbs varies greatly in different types of bulbs so that the supporting sleeve for the bulb usually called the connector sleeve, should be slidably mounted in the reflectors of the lamps in which such bulbs are used in order that any available light bulb may be em ployed. These centers of illumination are not always in the axes of the base of the bulbs and a transverse adjustment of the light bulbs should therefore be provided in order that these centers of illumination may be brought to the foci of'the reflectors in which they are mounted.
A reflector 25 is formed with a central opening 26 to receive the connector sleeve 16 which has a spherical band 17 The reflector is formed with notches 27 connecting with the central opening 26 and the depth and width of these notches are about the height and width of the small tongues on the inner ends of the sections 29 which are segments of a cylindrical thimble and have end flanges 30 and longitudinal flanges 31.
A spring 32 is mounted on this thimble between the end flanges 30 and the longitudinal flanges 31.
Slidable within the thimble and held in any desired. position by the sections 29 under pressure of the spring 32, is the band 17 which has a spherical surface so it may be readily turned Within the thimble. The connector sleeve receives the light bulb 13 which may be moved to any desired position within the limits of adjustment by sliding or tilting the connector sleeve within the thimble, the bulb being held in position by the pressure of the sections 29 due to the pressure of the spring 32.
These thimble sections are stamped from sheet metal, the distance between the inner surfaces of the out-turned ends of the tongues 28 to the ends 33 of these sections being about equal to the thickness of the reflector 25 so that when the tongues 28 are placed in the notches 27, the thimble will be properly positioned. When the thimble is assembled and the spring 32 placed thereon, the interior diameter of the thimble is less than the diameter of the spherical band 17 of the connector sleeve and the spring will therefore cause proper pressure and friction to hold the bulb 13 in position.
The number of the fingers Or sections composing these thimbles may be varied as desired by those skilled in the art, as may also the other details of construction, without departing from the spirit of my invention as set forth in the following claims.
I claim 1. In a focusing device for electric lamps, the combination of a reflector having an opening and shallow notches extending therefrom, a connector extending into said opening and embodying a circumferential spherical portion, a thimble attached to said reflector and embodying a series of sections enclosing said sleeve, and a circular coil spring extending around the outside of the sections of the thimble and forcing them against the spherical band of the sleeve, said sections having tongues at their inner ends adapted to pass through the notches in the reflector and to be bent over to secure the thimble to the reflector.
2. In a focusing device, the combination of a reflector having an opening, a connector sleeve extending into said opening, a cylindrical thimble attached to said reflector to receive the connector sleeve and comprising a series of independent sections, each having a longitudinal flange along one edge and a transverse flange at its outer end, and a spring to draw the sections together around the sleeve, said spring being positioned between thelongitudinal and transverse flanges on said sections.
, 3. In a focusing device for electric lamps, the combination of a reflector having a circular opening and radial notches extending therefrom, a connector sleeve extending into said opening, a cylindrical thimble attached to said reflector to receive the connector sleeve and comprising a series of independent sections each embodying a tongue adapted to extend into a radial notch at said opening in the reflector, each of said sections having a longitudinal flange along one edge and a transverse flange at its outer end, and a circular coil spring to draw the sections together around the sleeve.
CHARLES E. GODLEY.
US628999A 1923-03-31 1923-03-31 Focusing device Expired - Lifetime US1497678A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060056187A1 (en) * 2004-09-14 2006-03-16 Koegler John M Reflector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060056187A1 (en) * 2004-09-14 2006-03-16 Koegler John M Reflector
US7377683B2 (en) * 2004-09-14 2008-05-27 Hewlett-Packard Development Company, L.P. Reflector

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