US1478282A - Flash light - Google Patents
Flash light Download PDFInfo
- Publication number
- US1478282A US1478282A US571435A US57143522A US1478282A US 1478282 A US1478282 A US 1478282A US 571435 A US571435 A US 571435A US 57143522 A US57143522 A US 57143522A US 1478282 A US1478282 A US 1478282A
- Authority
- US
- United States
- Prior art keywords
- lens
- bulb
- light
- cap
- bracket
- 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
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Classifications
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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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
Definitions
- My invention relates to improvements in flashlights, searchlights, spotlights and similar devices, in which the cap is adapted to change the distance of the lens from a source of light constructed to throw the rays in a certain direction in order to focus the light effectively at different distances from the light; and the objects of my improvement are: first, to construct a spring bracket "and socket for holding the'light bulb; second, to eliminate the use of the ordinary reflector such as is commonly used in flashlights; third, to use a reflector bulb silvered or otherwise coated to throw practically all the rays forward through an angular space; fourth, to use a short focal length lens; fifth, to provide brackets for holding spare bulbs; and sixth, to construct a device by means of which the light therefrom may be effectively focused at diflerent distances from the end of the device by changing the relative location of the lens and the source of light.
- FIG. 1 is a side elevation of my flashli ht- Figure 2 is a transverse section on lines 2-2 of Figure 1;
- Figure 3 is a section on lines 3 -3 of Figure 2;
- Figure f is a diagrammatic illustration of my improved flashlight using a concentrating reflector bulb and a short focal length lens with the lens in the advanced position;
- Figure 5 is a diagrammatic illustration of my improved flashlight with the lens in the conventional dispersing position.
- My invention is embodied in a device consisting of the ordinary cylindrical case 1, having a rear end closure 2, conventional spring 3, switch 4, and batteries 5.
- a cap 6 is mounted to slidingl rotate on the case.
- I use a spring bracket 7 for holding the bulb, the bracket being attached to the case by means of rivets, screws or similar attaching means 8.
- the ends of the brackets are bent at right angles and form points 9 which serve as means to guide the cap forward and backward by running in the threads 10 punched in the cap.
- the bulb 11 is silvered or otherwise coated in the required proportion to throw all the rays through the lens. My expedient of silvering or coating the bulb renders unnecessary the usual reflector.
- I use a short focal length lens 12.
- the form of lens illustrated is a double convex lens although I may use other forms of a'short focal length lens such as a plano convex lens.
- I provide two spring clamps '14 located in the cap end.
- a flashlight means for holding an electric light bulb, said means consisting of a bracket, the ends of said bracket acting as a guide for a cap on said flashlight.
- a flashlight means for focusing the light thereof, comprising a flashlight case, a cap mounted to travel thereon, a bulb bracket attached to said case, parts of said bracket acting as guiding means to control the travel of said cap, a lens in said cap,
- means of focusing the E5 light thereof, comprising a flashlight case
- a cap rotatably mounted on said case and adapted to move forward and backward thereon, a resilient bulb bracket attached 'to said case, said cap having grooves thereon, w the ends of said bracket extending through said case and acting as guiding means for the grooves in said cap, a lens in said cap, said lens having a short focal length, and an electric light bulb adapted to be attached to said bracket, said bulb being coated on enough of its surface to cause the rays of light from the bulb to pass through said lens.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
Description
Dec. 118 i923. 31,47,282
R. L. HUNTER FLASH LIGHT Filed June 28. 1922 Raeri Lol fwmfien Fatented Dec. 18, I923.
unite stars ROBERT L. HUNTER, OF NORFOLK, VIRGINIA.
FLASH LIGHT.
Application filed June 28, 1922. Serial No. 571,435.
To all whom it may concern:
Be it known that I, ROBERT L. HUNTER, a citizen of the United States of America, residing at Norfolk, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in Flash Lights, of which the following is a specification.
My invention relates to improvements in flashlights, searchlights, spotlights and similar devices, in which the cap is adapted to change the distance of the lens from a source of light constructed to throw the rays in a certain direction in order to focus the light effectively at different distances from the light; and the objects of my improvement are: first, to construct a spring bracket "and socket for holding the'light bulb; second, to eliminate the use of the ordinary reflector such as is commonly used in flashlights; third, to use a reflector bulb silvered or otherwise coated to throw practically all the rays forward through an angular space; fourth, to use a short focal length lens; fifth, to provide brackets for holding spare bulbs; and sixth, to construct a device by means of which the light therefrom may be effectively focused at diflerent distances from the end of the device by changing the relative location of the lens and the source of light.
These and other objects are attained by the mechanism illustrated in the accompanying drawings in which:
t Figure 1 is a side elevation of my flashli ht- Figure 2 is a transverse section on lines 2-2 of Figure 1;
Figure 3 is a section on lines 3 -3 of Figure 2;
Figure f is a diagrammatic illustration of my improved flashlight using a concentrating reflector bulb and a short focal length lens with the lens in the advanced position; and
Figure 5 is a diagrammatic illustration of my improved flashlight with the lens in the conventional dispersing position.
My invention is embodied in a device consisting of the ordinary cylindrical case 1, having a rear end closure 2, conventional spring 3, switch 4, and batteries 5. A cap 6 is mounted to slidingl rotate on the case. Instead of the usual re ector with socket, I use a spring bracket 7 for holding the bulb, the bracket being attached to the case by means of rivets, screws or similar attaching means 8. The ends of the brackets are bent at right angles and form points 9 which serve as means to guide the cap forward and backward by running in the threads 10 punched in the cap. The bulb 11 is silvered or otherwise coated in the required proportion to throw all the rays through the lens. My expedient of silvering or coating the bulb renders unnecessary the usual reflector. In carrying out my invention I use a short focal length lens 12. The form of lens illustrated is a double convex lens although I may use other forms of a'short focal length lens such as a plano convex lens.
As areceptacle for securely holding extra bulbs, I provide two spring clamps '14 located in the cap end.
The principle of my invention and the means of operating it will be apparent from the foregoing description. When the user of a flashlight made according to my invention desires to focus the rays of light or desires an intense light at a distance from the end of a flashlight, he places the lens at a suitable distance away from the bulb to secure the right focus simply by turning the cap. The lens is restored to its normal position, of course, by turning it in the direction opposite to the direction it turned to increase the distance of the lens from the light.
In Figure 4, due to the coating or silvering applied to the bulb, practically all the rays pass through the short focal length lens. The direction of the rays when the lens is in normal position is shown diagrammatically in Figure 5. I
I do not wish to be understood as limit ing myself to the precise structure and arrangement of the parts, but claim the right to all changes within the scope of my invention.
Having now fully described my invention, what I claim as new and desire to secure by Letters-Patent is:
1. In a flashlight, means for holding an electric light bulb, said means consisting of a bracket, the ends of said bracket acting as a guide for a cap on said flashlight.
2. In a flashlight, means for focusing the light thereof, comprising a flashlight case, a cap mounted to travel thereon, a bulb bracket attached to said case, parts of said bracket acting as guiding means to control the travel of said cap, a lens in said cap,
and an electric light bulb inserted in said bulb bracket, a part of said bulb being coated whereby the rays of light are thrown forward through an angular space.
3. In a flashlight, means of focusing the E5 light thereof, comprising a flashlight case,
a cap rotatably mounted on said case and adapted to move forward and backward thereon, a resilient bulb bracket attached 'to said case, said cap having grooves thereon, w the ends of said bracket extending through said case and acting as guiding means for the grooves in said cap, a lens in said cap, said lens having a short focal length, and an electric light bulb adapted to be attached to said bracket, said bulb being coated on enough of its surface to cause the rays of light from the bulb to pass through said lens.
In testimony whereof I affix my signature.
ROBERT L. HUNTER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571435A US1478282A (en) | 1922-06-28 | 1922-06-28 | Flash light |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571435A US1478282A (en) | 1922-06-28 | 1922-06-28 | Flash light |
Publications (1)
Publication Number | Publication Date |
---|---|
US1478282A true US1478282A (en) | 1923-12-18 |
Family
ID=24283691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US571435A Expired - Lifetime US1478282A (en) | 1922-06-28 | 1922-06-28 | Flash light |
Country Status (1)
Country | Link |
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US (1) | US1478282A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2517295A (en) * | 1947-07-30 | 1950-08-01 | Esher Raymond Robert | Plumb bob having vertical light-ray projector |
US3040993A (en) * | 1960-04-29 | 1962-06-26 | Edward J Schultz | Lighting fixture |
US20040190299A1 (en) * | 2003-03-25 | 2004-09-30 | Chapman/Leonard Studio Equipment | Flashlight |
US20050088843A1 (en) * | 2003-03-25 | 2005-04-28 | Chapman Leonard T. | Flashlight |
US20050099805A1 (en) * | 2003-03-25 | 2005-05-12 | Chapman/Leonard Enterprises, Inc. | Flashlight |
US20050174782A1 (en) * | 2003-03-25 | 2005-08-11 | Chapman Leonard T. | Flashlight |
US20060203476A1 (en) * | 2003-03-25 | 2006-09-14 | Chapman Leonard T | Flashlight |
US20080068833A1 (en) * | 2006-09-15 | 2008-03-20 | Wen-Chin Shiau | Focus-adjustable LED flashlight |
US20090268440A1 (en) * | 2005-06-20 | 2009-10-29 | Cooper Crouse-Hinds Gmbh | Portable lighting device |
US20110080725A1 (en) * | 2009-10-02 | 2011-04-07 | Coast Cutlery Company | Focusing lens system |
US20110080736A1 (en) * | 2009-10-02 | 2011-04-07 | Coast Cutlery Company | Focusing lens system |
US20130010470A1 (en) * | 2011-07-06 | 2013-01-10 | Min Byeong Guk | Lighting device |
US20140049967A1 (en) * | 2011-04-13 | 2014-02-20 | Nanqing ZHOU | Light beam adjusting structure for light emitting diode (led) lamp |
US20140092591A1 (en) * | 2012-09-29 | 2014-04-03 | Jiangsu Sun & Moon Lighting Co.,Ltd. | Patio light |
US9739440B1 (en) * | 2017-01-24 | 2017-08-22 | Feniex Industries, Inc. | Vehicle illumination apparatus having adjustable modular optical units |
-
1922
- 1922-06-28 US US571435A patent/US1478282A/en not_active Expired - Lifetime
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2517295A (en) * | 1947-07-30 | 1950-08-01 | Esher Raymond Robert | Plumb bob having vertical light-ray projector |
US3040993A (en) * | 1960-04-29 | 1962-06-26 | Edward J Schultz | Lighting fixture |
US7083299B2 (en) * | 2003-03-25 | 2006-08-01 | Chapman/Leonard Enterprises, Inc. | Flashlight having convex-concave lens |
US20050088843A1 (en) * | 2003-03-25 | 2005-04-28 | Chapman Leonard T. | Flashlight |
US20050099805A1 (en) * | 2003-03-25 | 2005-05-12 | Chapman/Leonard Enterprises, Inc. | Flashlight |
US20050174782A1 (en) * | 2003-03-25 | 2005-08-11 | Chapman Leonard T. | Flashlight |
US20060203476A1 (en) * | 2003-03-25 | 2006-09-14 | Chapman Leonard T | Flashlight |
US7147343B2 (en) | 2003-03-25 | 2006-12-12 | Chapman/Leonard Studio Equipment | Flashlight |
US7152995B2 (en) | 2003-03-25 | 2006-12-26 | Chapman/Leonard Enterprises, Inc. | Flashlight |
US7396141B2 (en) | 2003-03-25 | 2008-07-08 | Chapman/Leonard Enterprises, Inc. | LED push rod flashlight |
US20040190299A1 (en) * | 2003-03-25 | 2004-09-30 | Chapman/Leonard Studio Equipment | Flashlight |
US20090268440A1 (en) * | 2005-06-20 | 2009-10-29 | Cooper Crouse-Hinds Gmbh | Portable lighting device |
US8162503B2 (en) * | 2005-06-20 | 2012-04-24 | Cooper Crouse-Hinds Gmbh | Portable lighting device |
US7461945B2 (en) * | 2006-09-15 | 2008-12-09 | Wen-Chin Shiau | Focus-adjustable LED flashlight |
US20080068833A1 (en) * | 2006-09-15 | 2008-03-20 | Wen-Chin Shiau | Focus-adjustable LED flashlight |
US20110080725A1 (en) * | 2009-10-02 | 2011-04-07 | Coast Cutlery Company | Focusing lens system |
US20110080736A1 (en) * | 2009-10-02 | 2011-04-07 | Coast Cutlery Company | Focusing lens system |
US8152327B2 (en) | 2009-10-02 | 2012-04-10 | Coast Cutlery Company | Focusing lens system |
US8371710B2 (en) | 2009-10-02 | 2013-02-12 | Coast Cutlery Company | Focusing lens system |
US20140049967A1 (en) * | 2011-04-13 | 2014-02-20 | Nanqing ZHOU | Light beam adjusting structure for light emitting diode (led) lamp |
US20130010470A1 (en) * | 2011-07-06 | 2013-01-10 | Min Byeong Guk | Lighting device |
US9234645B2 (en) * | 2011-07-06 | 2016-01-12 | Lg Innotek Co., Ltd. | Lighting device having adjustable reflector |
US9696007B2 (en) | 2011-07-06 | 2017-07-04 | Lg Innotek Co., Ltd | Lighting device with selectively controlled concentric light emitting modules |
US20140092591A1 (en) * | 2012-09-29 | 2014-04-03 | Jiangsu Sun & Moon Lighting Co.,Ltd. | Patio light |
US9739440B1 (en) * | 2017-01-24 | 2017-08-22 | Feniex Industries, Inc. | Vehicle illumination apparatus having adjustable modular optical units |
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