US1513211A - Flash light - Google Patents

Description

Oct. Z8 1924. E. R. BARANY FLASH LIGHT Filed Aug. 14, 1922 Uff,

Patented Oct. 28, 1924.

UNITED STATES 1,513,211 PATENT OFFICE.

EDMUND R. IBARANY, OF BROOKLYN, NEW YORK,.ASSIGNOR TO FRANCO ELECTRIC CORPORATION, A CORPORATION OF NE'W YORK.

FLASH.' LIGHT.

Application filed August 14, 1922- Seria No. 581,596.

To all whom t may concern.'

Be it known that I, Eni-.rune R. BARANY, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings,

city and State of New York, have invented certain new and useful Improvements in Flash Lights, of whichl the following is a specification.

This invention relates to flash lights.

It often happens in the manufacture of electric lamps, such as are commonly employed in flash lights, that the lamp filament is so arranged as to assume a position a little to one side or the other of the longitudinal aXis of the reflector, and as a result of such improper positioning of the filament, even though the lamp may be properly located with respect to the reflector under normal conditions, it is practically impossible to make an adjustment between the lamp and reflector in such a way that a proper focusing may be obtained.

An important object of my invention is to provide in a flash light a means by which a relative adjustment may be so effected between the lamp and the reflector thereof as to insure an intersection of the lamp filament by the longitudinal axis of the reflector.

A further object of the invention is to provide in a `flash light the combination of the above mentioned means with a means for effecting a longitudinal relative adjustment between the lamp and reflector, thereby makr ing possiblel a universal adjustment, or an adjustment between the lamp and reflector in all directions.

Other objects and certain advantages of the invention will become apparent from the following description when taken in connection with the accompanying drawings in which:A y

l Figure 1 is a side elevation of a flash light embodying my invention.

Figure 2 is an enlarged fragmental central longitudinal sectional view through the flash light shown in Figure 1.

In the drawings, wherein for the purpose of illustration is shown what I at present consider the preferred form of my invention, the numeral 5 indicates an elongated casing which may be constructed of fiber, metal, or other suitable material, and is adapted to A receive therein the usual form of cell 6, the

carbon electrode 7 of which is' disposed centrally within the customary zinc container 8 which forms the opposite electrode of the cell. The cell 6 is provided with a cardboard or other insulating sleeve 9 which, as will be readily understood, serves to insulate the cell from the casing 5. It will be understood that while I have shown the source of electrical energy as consisting of a vsingle cell, a plurality of cells may be employed and maintained in end to end relation within the casing 5, in accordance with the usual practice.

The upper end of the casing 5 is provided with an enlarged head 10, which is so constructed as to present a curvilinear surface, the plane of which coincides with that of a sphere of a given dimension inthe particular embodiment of the device shown. The enlarged head 10, at its upper end, is bent inwardly to provide a ledge 11, which is formed with a screw threaded flange 12 adapted to receive therein a screw threaded longitudinally adjustable support 13. This support is, at its upper end, flanged to provide a ledge 14 which serves to limit the adjustment of the support 13 in one direction, and is provided at its o-pposite end with a flange 15. Upon the flange 15 there is mounted an insulating a plurality of ears 17 struck from the support 13 and bent into intimate engagement with the disc, as clearly shown in Figure 2. To the insulating disc 16 there is connected a metallic plate 18 which is struck up at its center to provide an elongated screw threaded sleeve 19 adapted to receive the screw threaded outer contact 20 of the usual form of electric lamp 21,-the filament 22 of which is electrically connected to the outer contact 2O and to the central contact 23 in the usual manner. Adjacent the plate 18 there is arranged an insulating disc or member 24 upon which is imposed a metallic plate 25 with which is associated a conductor plate 26. The conductor plate is struck up intermediate its ends to provide a yieldable or resilient contact arm 27 adapted to electrically engage the carbon electrode 7. This yieldable or resilient tongue not only affords electrical connection between the lamp 21 and the source of electrical energy 6, but also functions as a shock absorber intermediate the lamp and cell to relieve the lamp of any detrimental shock or impact which might otherwise be imparted thereto when inserting thebattery, or in the event the flash light should accidentally yfall upon ,an unyielding lsurface.v i

In order thatthe several elements assocr ated with the "insulating disc `lmay he held in their proper relative positions, l provide a plurality of rivets 28 which are passed through the contact plate 26, the metallic plate 25, the metallic plate 18, and the insulating disc 16. It will be noted that rela-- tively `large openings 29 are provided in themetallic platelfor the reception of the rivets'28, and jthat the rivets 2,8 are conse" quently maintained out of Contact with the plate `18, thus avoiding short circuiting betweenthe jcontact plate 26 andthe metallic plate18, as'will be .readily appreciated.

',Upon the enlarged .head 10 therel is arranged ajmovable shield 2,9, the lower end of which is screw threaded, Vas shown, and adapted ,to receive thereupon Va cooperative screw threaded locking band 30. This loching band is adapted `to normally retain the shield 29 in yagiven position upon the head 10, but maybe loosenedto permit a desired adjustment of the shield upon the head. vlt may be' remarked that, when the screw threaded locking band30 is run down upon the lower screw Ythreaded end of the shield 2,9, an impinging effect' upon the head 10 is produced by the eoaction therewith ofthe shield and locking band, which impingment is suflicient to'efl'ectively lock 4.the shield in a desiredposition upon the 'head under all conditions.

VThe shield 2,9 terminates at its upper or outer end in an elongated screw threaded ange or sleeve 31, adapted Vto receive the screw threaded extension 32 of a jlens ring 3 3. This lens ring is adapted to retain in position the usual form of lens 34 which is seated"upon a longitudinally usta'ble reflector 3.5, having a Acentral opening 36 through which the lamp 21 projects. The

y lens 35 is retained in a given position, with respect to the lens ring L33, `by means of a screw threaded band 37, arranged within the extension 32, and having screw threaded engagement therewith, This screwthrejaded ,band 37 is provided atits upper end with ay flange 38 adapted to'receive `thereupon a similar flange 3,9, carried by the reflector 35, andupon which isl seated the lens 34.

' Iln ,the particular form of my invention shown' the drawings, the current passes from'the carbon electrode ,7,l through ythe tongue'27,the'metallic plate 25, ,the central Contact 23,' ,the lamp filament 22, the outer contact L20, rthe screw threaded sleeve 19, and the'irietalli'c plate 18, Awhich is adapted to be electrically connected tothe `zinc electrode any' suitableconductor'leading to a s witclf'l() og the type usually employed to control the Vow'iof electric current `'from the f 'aber enough eetlamp.

lVith the device embodying my invention, it is apparent that tlie'reflector may be adjusted longitudinally of its axis with re spectrto the lamp21 in orderto obtain a proper focusing by so rotating the lens ring 33 as to move :the reflector inwardly or outwardly with respect to the head 10 as the case may require. This longitudinal adjustment is desirable, particularly in flash lights known as the spot light type, in which the curvature of the reflector v35 is such that by properly adjusting the same with respect to 'the `lamp, the light rays emitted thereby may be reflected in substantially parallel relations and concentrated upon a relatively small area. lf, in making such an adjustment/in the usual form of spot light flash lights, the filament'22 is so arranged Vwithinthe lamp 21 as to assume a position a little tojone side or the other of the longitudinal vaxis ofl the reflector, it is' practically impossible to obtain a proper focusingbut with the device embodying my invention it is possible to so adjust the reflector 35, with respect to the lamp 21, that the filament 4thereof may be intersected at yits centerby the longitudinal axis of the reflector, and consequently an accurate focusing may ,be obtained even though the lamp lfilament `is not properly positioned withint'he lamp. To adjust lthe reflector 35, with respect ,to the .lamp 2,1, so that the longitudinal axis ogf the reflector may properly intersectjthe lamp lilament 22, it is'necessary only to `unscrewY the clampf ing ring 30 to such an extent as' to permit the shield 29 to ,be adjusted upon the head 10. properly adjusting fthe shield l2,9, the longitudinal axis of the reflector 35 may be made to intersect 'or coincide with the center of the lamp filament 22,.after which an accurate focusing may ,be obtained Vby adjusting the reflector 35, either outwardly or inwardly, ythrough theinstrumentality of the lens ring ,33, as vhereinbefore mentioned.

Having lthus described my invention, `I claim:

1. A flashV light comprising a casing adapted to receive a source of electricalvv energy and having a head associatedtherewith, an electric lamp adapted to `be placed in circuit with said source of electrical 'en- Grey, a reflector assofiated'wth Said lama a Ashield carried by said zhead and supporting said reflectonsaid shield being adapted to beso adjusted upon said head asto change the position of the longitudinal axis `of said reflector with resp/cotto the axis of said lamp, and a locking ring carried by `said shield and adapted ,to so cooperatewithsaid head asto lock said shield ina given position thereupon. y y

2.'A `flash light comprising a casing adapted to receive a fsource lof electrical energy se@ llens a heed esseciated therewith, an electric lamp adapted to be placed in circuit with said source of' electrical energy, a reflector associated with said lamp, a shield carried by said head and supporting said reflector, said shield being adapted to be so adjusted upon said head as to change the position of the longitudinal axis of said reflector with respect to the axis of said lamp, and means for effecting a longitudinal adjustment of said reflector with respect to said lamp.

3. A flash light comprising a receptacle adapted to receive a source of' electrical energy, a head carried by said receptacle, said head having a curvilinear surface, a lamp support detachably connected to said head, a lamp associated with said support, a reflector for reflecting the light rays emitted by said lamp, a longitudinally adjustable screw threaded support for said reflector, said support being adapted to be so moved as to effect a longitudinal adjustment of said reflector with respect to said lamp, and a shield having screw threaded engagement with said screw threaded support, said shield being mounted upon said head and adapted to be so moved thereupon as to change the position of the longitudinal axis of said reflector with respect to said lamp.

4. A flash light comprising a receptacle adapted to receive a source of electrical energy, a head carried by said receptacle, said head having a curvilinear surface, a lamp support detachably connected to said head, a lamp associated with said support, a reflector for reflecting the light rays emitted by said lamp, a longitudinally adjustable screw threaded support for said reflector, said support being adapted to be so moved as to effect a longitudinal adjustment of' said reflector with respect to said lamp, a shield having screw threaded engagement with said screw `threaded support, said shield being mounted upon said head and adapted to be so moved thereupon as to change the position of' the longitudinal aXis of said reflector with respect to said lamp, and a screw threaded band adapted to retain said reflector within said screw threaded support.

5. A flash light comprising a receptacle adapted to receive a source of electrical en.- ergy, a head carried by said receptacle, said head having a curvilinear surface, a lamp support detachably connected to said head, a lamp associated with said support, a reflector for reflecting the light rays emitted by said lamp, a longitudinally adjustable screw threaded support for said reflector, said support being adapted to be so moved as to effect a longitudinal adjustment of said reflector with respect to said lamp, a curvilinear shield having screw threaded engagement with said screw threaded support, said shield being fitted upon said head and adapted to be so movedV thereupon as to change the position of the longitudinal axis of said reflector with respect to said lamp, and means for locking said shield in a given position upon said head whereby said reflector is maintained in a given adjusted position with respect to said lamp.

6. A flash light comprising a receptacle adapted to receive a source of electrical en ergy, a head carried by said receptacle, said head having a curvilinear surface, a lamp support detachably connected to said head, a lamp associated with said support, a reflector for reflecting the light rays emitted by said lamp, a longitudinally adjustable screw threaded support for said reflector, said support being adapted to be so moved as to effect a longitudinal adjustment of said reflector with respect to said lamp, a curvilinear shield having screw threaded engagement with said screw threaded support, said shield being fitted upon said head and adapted to be so moved thereupon as to change the position of the longitudinal axis of said reflector with respect to said lamp, a screw threaded band adapted to retain said reflector within said screw thread ed support, and means for locking said shield in a given position upon said head whereby said reflector is maintained in a given adjusted position with respect to said lamp.

In testimony whereof, I have afliXed my signature to this specification.

EDMUND R. BARANY.

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