US2307574A - Reflector basin for luminaires - Google Patents

Reflector basin for luminaires Download PDF

Info

Publication number
US2307574A
US2307574A US345042A US34504240A US2307574A US 2307574 A US2307574 A US 2307574A US 345042 A US345042 A US 345042A US 34504240 A US34504240 A US 34504240A US 2307574 A US2307574 A US 2307574A
Authority
US
United States
Prior art keywords
basin
opening
reflector
luminaires
pull chain
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
US345042A
Inventor
Roy H Cunningham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bryant Electric Co
Original Assignee
Bryant Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bryant Electric Co filed Critical Bryant Electric Co
Priority to US345042A priority Critical patent/US2307574A/en
Application granted granted Critical
Publication of US2307574A publication Critical patent/US2307574A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/10Construction

Definitions

  • the basin may be supported beneath the lampin the usual manner and does not interfere in any way with the turning on and off of the lamp, but in the latter instance, the pull chain and drop cord are to be contended with as they hang directly downward from the lamp socket or holder. If the basin is of small diameter, the pull chain and cord may hang on the outside of the basin and function to operate the switch in the socket without seriously interfering with the basin.
  • the basin has a diameter of eight inches or larger, which is usually the case, it is not practical to have the pull chain hang on the outside thereof as the downward pull on the cord exerts a sidewise force on the basin, causing it to swing and be displaced from its normal position, which also interferes to a certain extent with the proper operation of the socket switch. In other words, it makes it more difficult to turn the light on and off.
  • a more specific object of my invention is to provide a reflector basin which has an easily removable knockout portion in the bottom part thereof which may be removed at will to provide a bottom opening to receive a pull chain and drop cord.
  • a further object of my invention is to provide a plastic reflector basin provided in the bottom portion thereof with a reinforced section of reduced thickness, which may be readily removed to provide a bottom opening in the basin.
  • Another object of my invention is to provide a reflector basin having its bottom portion so constructed that a small section thereof may be broken out to provide a bottom opening through which the pull chain or drop cord of the lamp socket or holder may extend.
  • Figure 1 is a side elevational view, partly in section, of a reflector basin embodying the principal features of the invention.
  • Fig. 2 is a bottom view of the basin.
  • the reflector basin it may be constructed in the shape or form as shown, or in any other suitable shape.
  • I As shown, it is in the form of an inverted bowl of generally conical shape which is open at the top and closed at the bottom.
  • the basin has side walls I I and a cone-shaped bottom portion l2 having an apex l3. 7
  • the basin may be constructed of any suitable material. However, it is preferred to use a plastic material and mold it in the desired shape to provide a one-piece or integral structure.
  • the side walls II and bottom portion l2 regardless of whether or not they are integrally related, may be of any desired shape or thickness in cross-section. As shown, the bottom portion It has a uniform cross-section except as will be described hereinafter.
  • the basin representing the invention may be so constructed that a bottom opening may be readily when desired.
  • This result may be accomplished by forming the bottom portion l2 of the basin in such manner as to provide a small section I4 of reduced thickness.
  • This section is preferably formed at the apex l3 of the cone-shaped bottom portion l2, or at any other suitable position and constitutes a readily removable knockout portion.
  • the basin may be used in its original form as made with the knockout portion l4 intact, which gives the basin the desired appearance with an, entirely closed bottom portion.
  • the knockout portion I4 may be removed by simply breaking it out to provide a bottom opening to receive the pull chain or cord attached thereto.
  • the bead I5 may be molded integrally with the bottom of the basin and is preferably rounded and of appreciable thickness to provide an adequate amount of reinforcement to the opening when the knockout portion I4 is removed.
  • the bead l5 not only functions as a reinforcing medium for the opening after removal of the knockout portion H but also strengthens the bottom of the basin at this point to such extent that the knockout portion [4 may be readily removed without danger of breaking or otherwise damaging the basin.
  • a rounded bead 15 also provides a better opening for the pull chain as sharp edges are eliminated so that the chain slides smoothly over the rounded edges of the opening and there is little or no tendency for it to catch when pulled to operate the socket switch.
  • reinforcing bead I5 is illustrated as being located on the inside surface of the basin, it will be apparent that it may be on the outside or beads may be provided on both the outside and inside surfaces. The exact location of the bead or beads or their shape is immaterial so long as the edge of the opening is reinforced.
  • the knockout portion is thin and may be entirely removed, leaving a clean and reinforced opening. Its removal does not require the use of special tools of any kind and may be effected Without danger ofbreaking or injuring the basin in any way.
  • a reflector basin for luminaires comprising, an inverted bowl-shaped member for mounting beneath a light source and having a bottom portion of plastic material, said bottom portion having a relatively small integral section of reduced thickness over a predetermined area at the center thereof which may be readily removed by breaking out to provide an opening in the bottom of the basin through which the pull-chain or cord of a socket for supporting the light source may extend or left intact to provide a closed bottom portion when it' is desired to control the light source by a wall switch, and a thicker section 'of narrow width surrounding the section of reduced thickness and integral therewith to reinforce the edge of the opening thus formed.
  • a reflector basin 'for use with pendant luminaires comprising, a one-piece inverted bowlshaped member. formed of plastic material for mounting beneath a light source which may be operated by means of a pull chain, said bowlshaped member having a bottom portion with a relatively small circular reinforced section at the center thereof integral with the bottom portion and surrounding a portion whichis of reduced thickness and integral therewith to provide a knockout portion which may be readily removed by breaking out to provide an opening through which the pull chain may extend to a point beneath the basin or left in place to provide a closed bottom portion.

Description

Jan. 1943- R. H. CUNNINGHAM 2,307,574
REFLECTOR BASIN FOR LUMINAIRES Filed July 12, 1940- wnmzssss; INVENTOR ATTOR Y I Patented Jan. 5, 1943 UNITED STATES PATENT OFFICE 2,307,574 REFLECTOR. BASIN FOR LUNHNAIRES Roy HaCunningham, Fairfield, Conn., assignor, by mesne assignments, to The Bryant Electric Company, a corporation of Connecticut Application July 12, 1940, Serial No. 345,042
2 Claims. (Cl. 240-100 My invention relates, generally, to lighting fixtures or luminaires, and more particularly, to reflector basins or shades which may be used therewith to provide indirect or semi-indirect lighting.
Heretofore, it has been the usual practice to provide two types of basins or bowls for use with lamps controlled by a wall switch or a pull chain socket. In the former instance, the basin may be supported beneath the lampin the usual manner and does not interfere in any way with the turning on and off of the lamp, but in the latter instance, the pull chain and drop cord are to be contended with as they hang directly downward from the lamp socket or holder. If the basin is of small diameter, the pull chain and cord may hang on the outside of the basin and function to operate the switch in the socket without seriously interfering with the basin. However, ifthe basin has a diameter of eight inches or larger, which is usually the case, it is not practical to have the pull chain hang on the outside thereof as the downward pull on the cord exerts a sidewise force on the basin, causing it to swing and be displaced from its normal position, which also interferes to a certain extent with the proper operation of the socket switch. In other words, it makes it more difficult to turn the light on and off.
Accordingly, it has been the custom to provide basins with and without a suitable bottom opening to accommodate the pull chain if such is used. Basins having bottom openings were not satisfactory for use with lamps controlled by wall switches for the reason that the bottom opening, if not closed by means of a separate plug, is unattractive and gives a definite light spot beneath it.
Therefore, it is the object of my invention, generally stated, to provide a reflector basin or bowl of a universal type which may be used with lamps controlled either by a wall switch or pull chain, whichis of simple and durable construction and which may be economically manufactured and installed.
A more specific object Of my invention is to provide a reflector basin which has an easily removable knockout portion in the bottom part thereof which may be removed at will to provide a bottom opening to receive a pull chain and drop cord.
A further object of my invention is to provide a plastic reflector basin provided in the bottom portion thereof with a reinforced section of reduced thickness, which may be readily removed to provide a bottom opening in the basin.
Another object of my invention is to provide a reflector basin having its bottom portion so constructed that a small section thereof may be broken out to provide a bottom opening through which the pull chain or drop cord of the lamp socket or holder may extend.
These and other objects of my invention will become more apparent from the following detailed description when considered in conjunction with the drawing, wherein:
Figure 1 is a side elevational view, partly in section, of a reflector basin embodying the principal features of the invention; and
, Fig. 2 is a bottom view of the basin.
Referring to the drawing, the reflector basin it may be constructed in the shape or form as shown, or in any other suitable shape. I As shown, it is in the form of an inverted bowl of generally conical shape which is open at the top and closed at the bottom. In the form illustrated, the basin has side walls I I and a cone-shaped bottom portion l2 having an apex l3. 7
The basin may be constructed of any suitable material. However, it is preferred to use a plastic material and mold it in the desired shape to provide a one-piece or integral structure. The side walls II and bottom portion l2, regardless of whether or not they are integrally related, may be of any desired shape or thickness in cross-section. As shown, the bottom portion It has a uniform cross-section except as will be described hereinafter.
In order to provide a basin which may be readily adapted for use with a lamp or other light source, which may be controlled either by means of a wall switch or a pull chain socket, the basin representing the invention may be so constructed that a bottom opening may be readily when desired.
This result may be accomplished by forming the bottom portion l2 of the basin in such manner as to provide a small section I4 of reduced thickness. This section is preferably formed at the apex l3 of the cone-shaped bottom portion l2, or at any other suitable position and constitutes a readily removable knockout portion.
By means of this construction, the basin may be used in its original form as made with the knockout portion l4 intact, which gives the basin the desired appearance with an, entirely closed bottom portion. When a bottom opening is desired for an original installation, or when the installation is to be changed, the knockout portion I4 may be removed by simply breaking it out to provide a bottom opening to receive the pull chain or cord attached thereto.
In order to reinforce the edge of the opening which may be formed by removal of the knockout portion [4, it is preferable to provide a rein forcing bead l 5 around the opening on the inside of the basin. The bead I5 may be molded integrally with the bottom of the basin and is preferably rounded and of appreciable thickness to provide an adequate amount of reinforcement to the opening when the knockout portion I4 is removed.
The bead l5 not only functions as a reinforcing medium for the opening after removal of the knockout portion H but also strengthens the bottom of the basin at this point to such extent that the knockout portion [4 may be readily removed without danger of breaking or otherwise damaging the basin.
The use of a rounded bead 15 also provides a better opening for the pull chain as sharp edges are eliminated so that the chain slides smoothly over the rounded edges of the opening and there is little or no tendency for it to catch when pulled to operate the socket switch.
While the reinforcing bead I5 is illustrated as being located on the inside surface of the basin, it will be apparent that it may be on the outside or beads may be provided on both the outside and inside surfaces. The exact location of the bead or beads or their shape is immaterial so long as the edge of the opening is reinforced.
The knockout portion is thin and may be entirely removed, leaving a clean and reinforced opening. Its removal does not require the use of special tools of any kind and may be effected Without danger ofbreaking or injuring the basin in any way.
The advantages of a construction of this kind are that only one type of. basin need be made up and stocked for selling purposes and the purchaser may use it for eith'er of two kinds of installation. The use of an integral knock-out portion makes it unnecessary to resort to special plugs or fittings to close the bottom opening of the basin when such opening is not desired.
It may be stated, in conclusion, that, while the illustrated example constitutes a practical embodiment of my invention, I do not wish to limit myself strictly to the exact details herein illustrated, since modifications of the same may be made without departing from the spirit of the invention, as defined in the appended claims.
I claim as my invention:
1. A reflector basin for luminaires comprising, an inverted bowl-shaped member for mounting beneath a light source and having a bottom portion of plastic material, said bottom portion having a relatively small integral section of reduced thickness over a predetermined area at the center thereof which may be readily removed by breaking out to provide an opening in the bottom of the basin through which the pull-chain or cord of a socket for supporting the light source may extend or left intact to provide a closed bottom portion when it' is desired to control the light source by a wall switch, and a thicker section 'of narrow width surrounding the section of reduced thickness and integral therewith to reinforce the edge of the opening thus formed.
2. A reflector basin 'for use with pendant luminaires comprising, a one-piece inverted bowlshaped member. formed of plastic material for mounting beneath a light source which may be operated by means of a pull chain, said bowlshaped member having a bottom portion with a relatively small circular reinforced section at the center thereof integral with the bottom portion and surrounding a portion whichis of reduced thickness and integral therewith to provide a knockout portion which may be readily removed by breaking out to provide an opening through which the pull chain may extend to a point beneath the basin or left in place to provide a closed bottom portion.
ROY H. CUNNINGHAM.
US345042A 1940-07-12 1940-07-12 Reflector basin for luminaires Expired - Lifetime US2307574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US345042A US2307574A (en) 1940-07-12 1940-07-12 Reflector basin for luminaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US345042A US2307574A (en) 1940-07-12 1940-07-12 Reflector basin for luminaires

Publications (1)

Publication Number Publication Date
US2307574A true US2307574A (en) 1943-01-05

Family

ID=23353216

Family Applications (1)

Application Number Title Priority Date Filing Date
US345042A Expired - Lifetime US2307574A (en) 1940-07-12 1940-07-12 Reflector basin for luminaires

Country Status (1)

Country Link
US (1) US2307574A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901596A (en) * 1956-11-01 1959-08-25 Sears Roebuck & Co Lamp
US4123793A (en) * 1976-10-20 1978-10-31 Lucas Industries Limited Lamp reflectors
US4124883A (en) * 1976-10-20 1978-11-07 Lucas Industries Limited Lamp reflectors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901596A (en) * 1956-11-01 1959-08-25 Sears Roebuck & Co Lamp
US4123793A (en) * 1976-10-20 1978-10-31 Lucas Industries Limited Lamp reflectors
US4124883A (en) * 1976-10-20 1978-11-07 Lucas Industries Limited Lamp reflectors

Similar Documents

Publication Publication Date Title
US3055015A (en) Releasable hinge assembly
US3913773A (en) Ceiling box for electrical outlets
US2321640A (en) Outlet box cover and fixture support
US2580056A (en) Electrically lighted wall switch plate
US5353746A (en) Aquarium with light fixture isolated from tank
US2227655A (en) Ceiling or wall recessed lighting fixture construction
US4590345A (en) Light switch adapter for toddlers
US2307574A (en) Reflector basin for luminaires
US2336599A (en) Lighting fixture
US2239343A (en) Illumination unit
US2167458A (en) Combination electric lamp
KR200153937Y1 (en) Device for raising aquarium fish and receptacle assembly for the said device
US2301238A (en) Fluorescent lighting fixture
US2349924A (en) Electrical fixture
US3166253A (en) Lighting fixtures
US3253139A (en) Luminaire
US2172523A (en) Lighting fixture
US1735068A (en) Electric-lighting fixture
US1478870A (en) Souri
US3334221A (en) Ornamental lighting fixture
US1587330A (en) Stud fastening
US1670453A (en) Attachment for electric-light switches
KR100921141B1 (en) An apparatus for supporting pendant light
US2243483A (en) Light attachment for electric razors
US2512948A (en) Light fixture