US1448353A

US1448353A - Flash light

Info

Publication number: US1448353A
Application number: US523841A
Authority: US
Inventors: Edmund R Barany
Original assignee: FRANCO ELECTRIC CORP
Current assignee: FRANCO ELECTRIC Corp
Priority date: 1921-12-21
Filing date: 1921-12-21
Publication date: 1923-03-13
Anticipated expiration: 1940-03-13

Description

Mar. 13, 1923.

E. R. BARANY.

FLASH LIGHT.

FILED DEC.21. 1921.

atented NI TED STATES 1'1:

EDMUND R. BARANY, OF BROOKLYN, NEW YORK, ASSIGNOR TO FRANCO ELECTRIC CORPORATION, A CORPORATION OF NEW YORK.

FLASH LIGHT.

Application filed December 21, 1921. Serial No. 523,841.

T all whom it may concern: an inwardly projecting flange 18 adapted to Be it known that I, EDMUND R. BARANY, a engage a lens hereinafter more particularly citizen of the United States, and resident of described. the borough of Brooklyn, county of Kings, To the inner surface of the casing 10 at 5 city and State of New York, have invented one end thereof there are secured a plucertain new and useful Improvements in rality of conductor strips 19 corresponding Flash Lights, of which the following is a in number to the number of lamps employed. ifi ation, These conductor strips are bent outwardly This invention relates to flashlights and at their outer ends through openings 20 10 has for an important object the provision formed in the casing 10 and engage the of a means by which the rays of light emitusual central contact of the lamps21. The

ted by the several lamps are focused upon or lamps 21 as shown are supported by the reconverged at some distant point beyond the flectors 22 and are maintained in screw center of curvature of the several reflectors threaded engagement with the reduced or 15 which are employed. Screw threaded portions of the reflectors as A further object of the invention is to proshown at 23. The reflectors 22 which are so vide a novel means of supporting a pludisposed that their axes converge toward rality or group of reflectors in such a way a common point as illustrated in Figure 3, that the beams of light reflected thereby are are carried by a reflector plate 24 from which 20 concentrated upon a relatively small area. hey may be stamped or to which they may Other objects of the invention will become be independently secured as by soldering or apparent from the following description the like. i The reflector plate 24 as shown taken in connection with the drawings in in Figure 2 is slightly concaved and is adaptwhich; ed to receive thereupon a lens 25 which en- 25 Figure 1 is a plan View of a flashlight gages the reflector plate 24 at the periphery embodying my invention. thereof and is maintained in firm engage- Figure 2 is a fragmentary longitudinal ment therewith by means of the lens ring sectional view taken on line 2-2 of Fig- 17 It will be noted that the reflector plate ure 1. 24 is spaced an appreciable distance from 30 Figure 3 is a diagrammatic view illusthe lens ring 17 at its periphery to prevent trating the circuits for the various lamps short circuiting of the current as will be and the manner in which the light rays are more fully appreciated when considering the focused upon a given point or area. wiring diagrams shown in Figure 3. By Figure 4 is a sectional view taken on line reason of the fact that the reduced portions 35 44 of Figure 2. 23 of the reflectors 22 extend only a slight In the drawing the numeral 10 indicates a distance into the openings 20 within which casing in the form of an elongated cylindrithey snugly fit, it is apparent that the recal tube, preferably constructed of fibre or flector plate 24 will assume a central posiother suitable insulating material within tion with respect to the outer end of the re- 40 which is arranged a battery 11 comprising a flector head 15 when the central contacts of plurality of cells 12, each of which employs the lamps 21 engage the outer ends of the the usual form of zinc container 13 and carconductor strips 19. In assembling the debon electrode 14. vice the reflector plate 24 and reflectors 22 Upon one end of the casing 10 there is are forced to assume given positions. these 45 mounted a reflector head 15 which at its positions being maintained by reason of the outer end is screw threaded as shown at 16 peripheral engagement of the reflector plate and adapted to receive thereupon the usual 24 with the lens 25 which is retained firmly form of lens ring 17, which is provided with seated with the lens ring 17.

The several cells 12 comprising the battery 11 are inserted in the chsing 10 by removing the usual screw threaded cap 26 diagrammatically illustrated in Figure 3 which is provided with the conventional thrust spring 27 and when so inserted the carbon electrode 14:: of the uppermost cell shown in Figure 3 electrically engages a more or less resilient contact strip 28 which is bent substantially at a right angle and secured to the casing 10, the conductor strip being again bent and passed through an opening 29 formed in the casing in order that the same may electrically engage one of the reflectors 22 as clearly shown in Figure 2.

l have illustrated only diagrammatically the switch 30rfor controlling the circuits through the several conductors 81 leading to the conductor strips 19 which are electrically connected with the lamps 21, inasmuch as the device embodying my invention is not restricted to any specific design in this connection. It may be well to mention however, that the switch 30, having a plurality of circuit closer arms 32 which correspond in number to the number of conductors 31, may be actuated to place either one or more of the lamps 21 in circuit with the battery 11 through the reflectors 22, reflector plate 24, conductor 28, one or allof the conductors 31 and the conductor 33 which is connected at one end to the switch 30 and at its opposite end to the zinc electrode of the'lowermost cell 12 in the usual manner. It will be readily appreciated that, by reason of the angular disposition of the reflectors 22 and the provision which is made for maintaining a plurality of lamps in circuit at the same time, I am enabled to concentrate the light rays from the plurality of lamps upon a given area and thus intensify the illumination at the point of concentration. But on the other hand, should it be desired to direct the light upon a point other than that at which the axes of the various reflectors converge, the flashlight as a whole may be so handled as to project the light rays from a single lamp upon the desired point or area.

A device embodying my invention above described may employ a plurality of reflectors arranged to concentrate the light rays emitted by their respective lamps at any desired point remote thereto, the point of concentration being dependent of course, upon the angular relation of the reflector axes with respect to the longitudinal axis of the casing 10. For example, should it be desired to concentrate the light upon a given point relatively close to the lamps the reflectors may be setat a greater angle with respect to the axis of the casing than is required if the point of concentration is to be located at a point more remote to the lamps. Inasmuch as certain requirements will determine the location at which the light rays raaeeea of the reflectors 22 and in this connection it I may be pointed out that the point of light concentration illustrated in Figure 3 is represented primarily to illustrate somewhat exaggeratedly the fact that the light rays converge forwardly upon an area remote to the lamps.

Having thus described my invention, ll claim:

1. A flashlight comprising a casing adapted to receive therein a battery, a plurality of lamps grouped about the axis of said casing, reflectors associated with said lamps for reflecting the light rays thereof, and a reflector rigidly connected plate supporting said reflectors for supporting and retaining them in such positions that their axes intersect at a point on the axis of said casing an appreciable distance beyond the end thereof.

2. A flashlight comprising a casing, a reflector head, a reflector plate associated with said head, means for retaining said plate centrally disposed with respect to the axis of said casing and head, a group .of independent reflectors rigidly attached to said plate, the axes of said reflectors being disposed at a relatively small angle with respect to the axis of said casing, and a plurality of lamps so associated with said reflectors that the light rays emitted thereby are concentrated upon a given area relatively remote to said head.

3. A flashlight comprising a casing. a reflector head, a slightly concaved reflector plate associated with said head, means for retaining said plate centrally disposed with respect to said casing and head, a group of independent divergingly disposed reflectors rigidly attached to said plate, the axes of said reflectors being disposed at a relatively small angle with respect to the axis of said casing and plate, and a plurality of lamps so associated with said reflectors that the light rays emitted thereby are convergingly directed to and concentrated upon a given area relatively remote to said head.

a. A flashlight comprising a casing, a reflector head, a removable reflector plate associated with said head, means for supporting said plate in a centrally disposed relation to the axis of said casing and head, means for retaining said plate centrally disposed with respect to the axes of said casing and head, a group of divergingly disposed reflectors rigidly attached to the said plate, the axes of said reflectors being disposed at a relatively small angle with respect to the axis of said casing, and a plurality of lamps so associated with said reflectors that the light rays emitted thereby are centered upon a given area relatively remote to said head.

5;. A flashlight comprising a casing, reflector head, a slightly ooncaved plate associated with said head but insuplurality of lamps so associated with said related therefrom, a group of divergingly disflectors that the light rays emitted thereby posed reflectors carried by said plate, said are centered upon a given area relatively l0 reflectors being formed integral with said remote to said head. I

5 plate and having their axes disposed at a In testimony whereof. I have atlixed my relatively small angle with respect to the signature to this specification. axis of said casing, head and plate, and a EDMUND R. BARANY.