US1599113A - Flash light - Google Patents

Description

Sept. 7 1926.

W. W. CARGILL El' AL FLASH LIGHT Filed April 2s, 1924 abatterys y The primaryy WL'LIM W. CARGIIQILBAND JOHN ennv'ns,

' FRENCH This invention ,I relates PATENT orner. g

FLASH LIGHT;

Application'mearlprn 2a, leeg. isvfiaifNa-voa'ias.

patati-1y' 1 t v{lash-lights of the.typeemploying a tubular casing. and ya cells: confined dry cell lor a. plnralityjo d ry withinvthelv casing,r aiordin'g ect-iis? .to 'provide a'v l ple,v cheap, and yvery effective constrnction whichffwill.serveto properlyl confine the dry cells and the lamp obviate `'danger :ot injury to bulb.: vAstill further Objectis to provide a construction having; provision` lor preventing the cellsffrom` causing inlury to the lamp, saidjconstruction being offnonlshort--circuitingrcharacter` u f y n e., The; invention is illustrated in its preijerred embodiment in the accompanying drawing, in which- Y Figure. l1 .r

epresentsiai longitudinal4V sec? Vtionalv view of the'improved flash-lighteim bodying our invention.;- VIVtary sectional l view ofI the casing Fig.` 2,' ajrfragmenatthe upper portion and'llg. 3, a brokenlongitudinal sectional view illustrating a modifi-- cation.

Referring to nFigs.' liv-land. 2H, kA represents atubular casingwhich preierablyis Mcom posed of insulating: -mounted in `one ing alamp bulbl'B. in the casing;

ring: confined fpermost cell;

the electric circu1t..`f

The' casing end 'of'V the casing and carry- C, dry cells contained l), a spacing and anchoring inthe. casingfabove the npand E, `a 'switch controlling 1A `may be composedf'of hard fibre or otherff suitable material.1A lIt is equipped at its ferrulel np'on ed a` threaded retainer-ring irontl end' with a. threaded which is removably mountto secure the lens itin-position.V Thelens 3 serves, in turn, to secure position.

'The sp'acingering sulatlngy material.

paste board r the reiiector in l) preferably isvo'l 4ining.

j In electrical .contact with-.the reflector,

his al conductor-strip 4 which `Inayjconsist of aistripof brass, for example.

terminal of the lamp* is in 'electrical contact with the reiiector 1B and through said reflector fwith the strip;` 4c.:

One end of theQstrip ii makes Contact Withthe central contact 5 ofthe uppermost-ce l. n y f A second conductor-strip 6 extends within the ringll) and makes contact with theV central contact o the vlamp bulb.

material; B, a reiiector Y extends snugly through a'islotor` .tra-l. contact of' the:I lamp .lustrationugivem 2 which serves j and to prevent possibilityV oi vthe members 4P It may comprise a heavy The outer conductor-strip 7` in electricalwith the Zinc cupV ofthevlower'V- Theu switch E 'is provided with third connectionV most@ cell.

a movable ymember `8 which is adapted to complete the circuit by` forming a con` shoused in a countersink 1l, so vthat the rivet does not make contact `with the ferrnle 1 yTheferruleV 1 terminates Vflush with thuezupper end of the shell A, and thev re*- flectorilange is narrow enoughk to prevent anydanger of contact between it and the retainerring 2. Thus, the metal which composes the terruley 1 energized.

l The strip 6 is of langularit'ormi. It has an' arm 6 which extendsy yalong the inner wall of the casing` andhas anarm 6b "which tionplfwinwthe spacing`ringr9. The arm 6' serves as acontact which ,engages the cen- 'biilb. In" the 1le Y an` ms'lation disk yl'is shown cemented .te thefunderside of the end portion of the arm 6b.' Ordinarily, this piecevof .insulation is not required because ofy the air y gap betweenA the terminals lib The insulationV disk may be'nsed and rbbeing forced together. n

The lower end of '.the strip 6a is turned outwardly and .passed through a slot or perforation la in the wall ofA the casing, and the extremity of the strip isbentvupwardly to. formA a contact as indicated at 6c. In the' illnstrationqgiven, the strip is shown securedto the casing wall by means offa rivet f 14,. lwhichfmay-be omitted if desired. ln practice, spacing-ringD isforce'd into the tube under siiflicient` pressure tof'insure av tight fit,v and the ringv is'anchored in its proper. position by Athe stripsflly and '6, which aresecured to the'casing y At its rear end, the casing is fitted with n and` the retainer- .ring .2- is not al1ve, or

p'erfora- L a threaded ferrule 15, upon which is screwed a removable cap 16. A conical spring 17 is interposed between the bottom of the Zinc cup of the lower cell and the end wall of the cup 1G. The lower end of the strip 7 preferably is extended out of the lower end of the tube A and then bent upwardly and interposed between the ferrule and the wall of the casing, as indicated at 7a. The strip 7 thus is in electrical connection with the cap 16. If desired, the strip 7 may be secured to the casing wall by a rivet 18 which may serve also to secure the ferrule 15 in position. At its upper end the strip 7 is connected by a rivet 19 with the housing 20 of the switch E. Thus, it will be understood that by moving the sliding contact member 8 of the switch, the gap between the conductor-strip 6 and the conductor-strip 7 may be closed.

AIn the modilication shown in Fig. 3, A represents the casing. The construction is similar to the construction previously described, except that the reflector and attendant parts fare made larger. In this case, a conductor-strip 4c is employed which corresponds with the conductor-strip 4 previously described. Here, the strip 4c is so positioned that its upper end will serve as a spring contact which engages the reflector B2 near the base portion of the reflector.

The spacing-ring D serves as a bumper block interposed between the lamp and the uppermost cell, the lower edge of the ring affording a shoulder against which the upper end of the cell butts. The strips 4 and 6 serve to anchor the ring, and, in turn, the spring arms 4b and 61 are supported on the ring. By this construction, the contact arms 41 and (ib are of sufficient length to gain a desired resiliency and to insure contact between said arms and the central contact of the lamp bulb on the one hand and the central contact of the upper cell on the other hand.

The foregoing detailed description has been given for clearness of understanding, and no unnecessary limitations should be understood therefrom.

l-Vhat we regard as new, and desire to secure by Letters Patent, is:

1. A Hash-light comprising a casing, a reflector mounted in one end of the casing, a lamp-bulb mounted in said reflector, a battery between the lamp-bulb and the opposite end of the casing, a hollow spacing-ring above the battery, a conductor-strip in electrical contact with said reflector and having a contact portion extending within the space encircled by said ring and engaging the central contact of the battery, a second conductor-strip extending through the space within said ring and having a contact portion engaging the central terminal of said lamp-bulb, a third conductor strip in electrical connection with a zinc cup of the battery, and a switch adapted to make electrical connection between said second-men cylindrical spacing-ring within said casing 'having perforations through which said inturned arms extend, a battery located below said spacing-ring and having a central contact engaging said first-mentioned inturned arm, the central contact of the lamp-bulb engaging said second-mentioned inturned rm, a third conductor-strip in electrical connection with the lower portion ofthe battery and having its upper end spaced with relation to the lower end of said second-mentioned conductor-strip, and a switch mounted on the side of the casing and adapted to close the connection between said secondmentioned conductor-strip and said thirdmentioned conductor-strip.

3. A flash-light comprising a casing of insulating material, a ferrule mounted on one end of said casing, a lens retaining-ring mounted on said ferrule, a reiiector insulatingly mounted in the casing with respect to said ferrule and lens retaining-ring, a lens surmounting said reflector, a lamp-bulb mounted in said reflector, a conductor-strip in electrical contact with said reflector and insulatingly mounted with respect to said ferrule and said lens retaining-ring, a spacing-ring within said casing having a perforation through which said conductor-strip extends, a-battery within said casing whose uppermost cell engages said ring and whose central contact engages said strip, a second conductor-strip having an arm engaging the central contact of the lamp-bulb and extending through a perforation in said spacing ring and having a downturned arm extending to a switch, a third conductor-strip in electrical contact with the lowermost cup of the battery and having its upper end spaced with relation to the lower end of said second-mentioned conductor-strip, and a switch mounted on the side of the casing and adapted to close the gap between said second-mentioned conductor-strip and said third-mentioned conductor-strip.

4. A flash-light comprising a casing of insulating material, a cap on one end of said casing, dry cells in said casing, a sprinpinterposed between the lower cell and sait cap, a conductor-strip electrically connected with said cap and extending upwardly along the inner side of the casinor a spacing-ring n n l having its lower edge engaging the uppermost cell, a reector insulating'ly mounted in said casing above said spacing-ring, a conductor strip riveted tovsad casing and Yin electrical contact with said reflector, said conductor-strip having an inturned arm eX- tending through a perforation in said vring and engaging the central Contact of the uppermost cell, a lamp-bulb mounted in said reflector, a conductor-strip having an in- 10 turned arm extending'through a perforation kin said ring and engagingtlie central con# tact ofV the lamp-bullo, said last-mentioned strip having a depending portion extending along the inner side of the casing and having its lower end secured to the casing, and a switch interposed between said first-inentioned and last-mentioned rcontact strips.k

WILLAM W. "CARGILL,

` JOHN GRAVES.

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