- 17, 1946- ~ H. G. HILLARD ET AL 2,412,684 LIGHT PRODUCING 13E-VICE Filed April 9, 1945 \\ \ mm.tà. \.| l1, . MQ 4 NewwwwmyÉsaw, Rm Rm|IY ATTORNEYS v a 2,412,684 Patented Dec. 17, -1946 f i UNITED STATES PATENT orrlclaà i 2,412,684 LIGHT-PRODUCING DEVICE Harry G. Hìllard and Clinton J. Jaeger, Sr., Bayonne, N. J. Application April 9, 1945, Serial No. 587,410 , 5 Claims. (o1. verr-28) 1 2 >'Our invention relates generally to light-produc ing mechanisms, and in particular it relates to port or handle member Ill, of any suitable size and shape as to permit its attachment to a camera (not shown) on which support I0 we mount a Y-bracket I2 having a pair of outwardly diverging arms I4, I6, terminating in a pair of avdevice for producing light of such intensity as to permit the taking of photographs thereby. Artiflcially-produced light for the taking of photographs is and has been well known for years and has been produced, for example, by the ignition of a powder of magnesium filings mixed with potassium chlorate, electric flood lights, electric flash bulbs, etc. These methods and apparatuses, while producing light of suf ficient intensity to permit the taking of photo graphs thereby, are accompanied by explosions, upstanding parallel arms I8, 29. ' Between arms I8, 20 and near the bottom thereof, we dispose , a cross-bar 22 in which we dispose a plurality of pyrophoric elements 24, 24. A number oi ver tically extending openings 26, 26 are formed as by coring, boring or otherwise, through bar 22, the bottom margins of which openings 26, 25 are threaded to receive a threaded plug 2S. After the pyrophoric elements 24, 24, flint or otherwise, are inserted in each of openings 25, 2E, a nor smoke or the like, are awkward and cumbersomev to use and are rather expensive in operation. It is the main object, of our invention, therefore, to mally expanding spring` 32 is positioned under each element 24 and the plug 28 threaded into each opening, this arrangement normally and resiliently urging the pyrophoric elements 24, 24 graphs thereby which is simple to construct and operate, is composed of inexpensive parts, and 20 upwardly. Bar 22 is fixed between bracket arms I8, 20 against any rotation. long lasting in use. . Another object of our invention is the pro Above bar 22, and parallel therewith, we dis provide an apparatus for producing light of suf ficient intensity to permit the taking of photo pose a hollow cylindrical roller 40, the surface of which is scored or otherwise roughened. We vision of a device for producing light of sufficient intensity to permit the taking of photographs provide an elongated rod 42 which passes through aligned openings in arms I8, 20 and through aligned openings in the reduced ends of roller 40, to maintain said roller 4B in slightly spaced, parallel relation above the'pyrophoric element thereby which comprises means for urging a plurality of pyrophoric elements against a Scored surface in combination with means for causing relative movement between the scored member and thepyrophoric elements. A further object of our invention is the pro 30 containing bar 22, and we provide means to cause rotation of the roller with respect to the fixed vision of a device for producing light of sufficient intensity to permit the taking of photographs pyrophoric elements, as desired. These means comprise a large coiledV spring 44 which is dis thereby which comprises a member containing posed withinroller 40 and surrounds rod 42, one a number of pyrophoric elements, means to spring end 44a of which spring 44 is secured to rod 42 urge these elements into engagements with a to rotate therewith, and the other end 44h of scored member, means to rotate the scored mem which spring 44 is secured to roller 4I! at the op ber against the pyrophoric elements, and means to posite end thereof. Rod 42 is provided with a tension the scored member for rotation. projecting portion or extension 56 beyond arm 2li, Other and further objectives of my invention will in part be pointed out hereinbelow in con 40 and has a key or handle 50, by actuation of which key or handle rod 42 may be rotated in a coun nection with the following description of an illus terclockwise direction to build up tension in spring trative embodiment thereof, while still other ob jects will be obvious therefrom. In the drawing annexed hereto and forming a 44. part hereof, arm 2l), which pin is adapted to be engaged by a ratcheted 'disc 60 slidably disposed on shaft extension 55. A collar 54 is iixed on shaft 56 and between this collar 54 and disc 5D a coil Figure 1 is a side elevational view, partly broken away to show details of internal construction, and partly in section, of one form of device con structed according to and embodying our inven tion; spring 58 is provided which normally urges disc 60 into engagement with pin 52. Extension 56 , is square or otherwise shaped in cross section to Fig. 2 is a side elevational View of a detail showing the roller locking mechanism in a difier permit disc B0 to slide laterally therealong and to prevent said disc 60 from rotating thereabout. ent position from that illustratedin Fig. 1; Fig. 3 is a vertical section on the line 3-3 of Fig. 2; and Fig. 4 is a vertical section on the line 4-4 of Fig. 1. Referring to the drawing, in the several views of . A pin 52 is provided projecting outwardly fr0-m Teeth 62, 62 on disc 60 are so biased as to permit ‘ 55 rod 42, 56 to -be turned counterclockwisely while preventing same from turning in a `clockwise di- - rection. We also provide means to lock roller 4D against ` which similar parts will be designated by similar rotation while tension is being built up in coil reference numerals, our device comprises a sup 60 spring 44 by rotation of rod 42, 56, these means 2,412,684 3 4 comprising an angulated lever 86 pivoted at 82 to a stud 84 projecting 'outwardly from arm I4. of pyrophoric elements disposed therewithìn and having means to resilîently urge said elements against the rotatable member.V whereby upon ro A spring 85 isA provided, trappedY between lever arm 36 and' Y-arm I3 normally` urging lever arm tation of thev latter agsloower;y of sparks will be 86 outwardly and the " other lever' arm 88 in produced from between'the two members con wardly. A spider 9U is provided, linked to the 1 end of lever arm 88, said spider 90 having aA plu- Y centrated in a straight path. rality of finger pieces 92, 92 projectingir’iward-lyf therefrom and through suitableïopeninggßß., S3; in Y-arni I8, finger pieces 92, 92"normally`reac á ing towards roller /äû under the urging of spring. prising a,~ supporting bracket having a, pair of "2. A device of the character described com spacedarms, apairof axially aligned and spaced ,. apart straight 'members disposed between the spaced arms, one of the members being ñxed and 85, one of ñngers 92 being engag'edïlbyl a` pin\94¿ the» other/being rotatable, one of the members havingV a plurality of pyrophoric elements dis posed therewithin and having means to resilîently projecting outwardly and laterally from` roller 40 (see Fig. l). A string, wire or the like, asv 96, may bel secured tothe free end of leverarmA 85, urge said elements against the other of said mem~ and led vdownto a point _ adjacent handley or bers.'v means_lto tension the rotatablemember for rotation, andr‘means to hold' the rotatablel mem ber against rotation during thetensioningyand mountn‘lûr, and secured to'trig'ger 98: As shaft or’îro'd 42 ’is rotated,- end Hoof `Vspring lll‘lV is car ried’arouiidwith it, ‘the other end_wg'beingneld by the locking of ro-ller 453. '~With the parts in theppsition shown in Fig. l, 20 means'. to _release the holding means togpermfit the rotatable'member to rotate andl strike" a shower- ofy sparks from thev pyrophoricv elements,> said» andiv roller 'lilY lockedV against rotation, counter shower falling on one side of the device in the» direction of rotation and concentrated'~ in» a clockwise rotation offkey~ orvhandle 541,1` causes ro tationfof shaft 4Z and tensioning of spring 44. straight path. When trigger S8ïis pressedinwardlytowards han Y 3_3 A device of the character described'com-~ prising a support bracket having a pair of straightv di’ef lo, operating' lever stand-spidersa the roher will be releasedïand the parts willlaîssume the positions shown in Fig. ß2, ñngers 92,j 9‘2; being axially- aligned and'spaced-apart membersifdis retracted and drawn out of engagement Vwith pin bersv being ñxed against rotation and;V the other posed between thebracket‘arms, one of the‘mem Sli;- permitting roller ¿lilïto be rotatednbyytheefX- :J comprising a rotatable cylinder, the iixed mem-f~ pànsionlrotation of spring'áßl,l and >striking sparks berg-having a: plurality of _pyrophoric elements dis-» from theV engagement of ?pyrophoric elements` 2li; posed therewithin and having means to kresilientlyî 24,» against ‘the scored-‘surfacejof roller 4Q, pro» urge said elementsl against the cylinder; means ducing the necessary amount of light.A comprising in part _a ,rotatableA shaft 'to vtension "suitable, conventionalL reflector may-be pro the Ycylinder for rotation, means to hjold_the, cyl-1_ vided (not shown) , to cause the light so generated f to'bedirectedl in> any' direction desired,- andthe number of ïpy'ropho-ric elements> must be such as inder against rotationA during7 the- tensioning. meansto release the holding meansto permitro tation of the_cylinder,- and means to lhold'the shaft against _rotation during rotation of the cyl? inder, and means to release theA holding means: to -permit the rotatablel member, to' rotate and strike a shower of sparks from the pyrophoric to" provide lightv of? suihciéntjin'tensity to permit thè taking orp‘hotograpns.' 'Itwiii-bejunderstooo thatfthe action ofthe camera shutter maybe evasilìâÍ synchronized-with the lightproduction,> for thedurationïofï the light is 'easily controllable by means 'of-'trigger 98, 'an'djit ispossibleV with my dévice to fcor'itinue- the light at peak intensity dur ing thè opening aridfclosin'g ofthe shutter, there elements, said shower falling on one side of the" device in the direction of rotation andfconcen-v tratedin» a straight path. 4.» Adevice ofthe4 character described for cre by »avoiding the necessity for `:precise syncl‘i-'ro'niza-` non of the'eamera shutter with the «split Ygezond atingY a shower of sparks concentrated" in a;-` straight path comprisinga-support bracket have peaktintensity of light producedasby magnesium filings, flashïbulbs, etc.Y »As a matter »of fact, with m-y device it-isïpossibleto avoidgany‘operative in-g a-Qpai-r -of spaced arms, a iirst 'pin on one arm:l 50 connection whatsoever tothe camera shutter;`V The lightïfcan. be created by disengagement. dipinti fromñng'erfpieces 92, 92«and prolongedlmtilafter., theî camerashutter `is actuated,” when! the Nrota tion „of„roller. 1lltlfniay' be ' stopped. and ¿the ilight production. ended.« ` f " ' ’ ' projecting outwardly therefrom,r a,- second~pin om the other armprojecting outwardlytherefrorm a-straight rodv disposed between uthe arms anda; cylinder disposed between ther arms in axially) alignedand spaced relation-to the rod, a plurality OfpyrOphOric'eIements disposed within the-rodi andi- means .f to» resilîently >urge- thea elementst against the cylinder, means >to mount the cylinder: Our device is composed of easily manufactured.` parts, and its assembly Lcalls. forno .special skill or bracket arms and' extending-beyondone thereof; experience.. means on the extension to engage the second pin-- rJ'Jhe. pyrophoric elements . may ,. be- 60 ' usedtime andtime againltheir replacementbee ing -easily ,_ and l :cheaply accomplished) , and. the.. dßyicewill be,.,very„inexpensive to opera-te.H Havinginow,„described _our invention, what Y.we claiIri-„anddesíre to secureby Letters .Patentisil vl Aßdevice pf, the ,characterdescribed comprisel . iris „ai pair or straight ,elOneïatecl,A axially _alignem and; .Slightly , spaced apart 111er11~-l0e1ss,A-` meansato. Support Saîdmembersìn said relation,` «meer the. members .beine ,ñXad .and the; other thereofbeing rotatable-,f the ñXed member'-havineeagplurality; as aforesaid compr-isinga- shaft journalledinthee. permitting rotation ofthe vextension and. ‘ofthe shaftim one. direction, and means on the cylinder engaging-.the first .ofsaid pins to prevent rotation» ofithe cylinder. 5. A device as in claim 4, in which the means tohold the’cylinder comprise,4 in part, a plurality o-flingers extending throughthe bracket arm,.onez of which lingers is engageable by the ñrst referred:y topin. HARRY G. HILLARD.; CLINTON` J .i JAEGER, SRA.