Oct. 1, 1946. 5.13. NOEL EI‘AL . 2,408,470‘ HULTIFLAS'H LAMP DEVI-CEv Filed Nov. 1, 1943 . 2" Sheets-Sheet 1 Inventtors. ‘ Edward B. NoeL, Au usrL' W. Sei'tz, Their A't‘torneg. 2,408,470 Patented Oct. 1, 1946 UNITED ‘STATES ' , g ' ‘ ’ PATENT ' OFFICE ‘ 2,408,470 ‘ ‘ ' MULTIFLASH LAMP DEVICE ‘ ’ V v Edward B. Noel, Cleveland Heights, and August ‘ W. Seitz, Euclid, Ohio, assignors to General Electric Company, a corporation of New York. 6 Application November 1, 1943, Serial No. 508,494 6 Claims. (Cl. 240-37) 1 Our invention relates to illuminating appa ratus for photographic purposes and its principal 'object is to provide an apparatus of this kind capable of emitting a number of ?ashes of light in rapid succession to enable aphotographer to take a series of pictures in a short time. Further ' objects and advantages of'the invention will ap pear from the following detailed'description of species thereof and from the appended claims. In the drawings accompanying and forming l3 over vboth of said ?anged wheels l2 and 12’. The wheel l2’ may then be- released to travel away from wheel l2 until its. motion is arrested by the band l3; After the lamps l4 have been ?ashed in sequence, in the manner described in detail hereinafter, the band _I3 is removed from thewheels l2 and 12’ in the same manner and a new band is inserted. The wheel l2, which is shown partially broken away in the‘drawings, has two spaced ?anges. l9 and 20 which are spaced apart a sufficient dis part of this speci?cation, species of my invention tance to accommodate a pair of spaced contacts are shown in which Fig.1 is a side elevational, 2| set into a body 22 of electrically insulating partly sectional view of the apparatus with a material which, as shown in Fig. 2, engages with portion of the casing broken away to show the arrangement of the internal parts; Fig. 2 is a 15 and has a portion or leg extending from the center. portion ‘of the hub 23 of the wheel l2 and outward fragmentary, side-elevational, partly sectional toward the periphery of the ?anges l9 and 20 a view showing the details of the contacts engage distance such that the contacts 2|, which have able with the lamps shown in Fig. 1; Fig. 3 is a semi-circular edges‘, engage a, ‘pairof spaced con similar view of a braking mechanism ‘for one ‘of tacts 24 (see Fig. 1) which are centrally disposed the wheels shown in Fig. ‘l; and Fig. 4 is a side 20 and spaced apart on the band l3 and projectv a elevational view of the apparatus shown in Fig. 1 slight distance beyond the surface of band vl3 'en-‘ showing the mechanism for actuating the various gaging the ?anges l9 and 201 of wheel l2. ' As best shown in ‘Fig. ,2, the wheel 12 is 'mounted'on an Referring to Fig. 1 of the drawings, themulti parts. ' ' ‘ ‘ ‘ ' ?ash lamp device comprises _a casing 10 having: 25 axle 25;on which‘it is free to rotate. The axle 25 vis supported at: each of’ its ends by‘ a bracket a reflector I l, which is preferably parabolic, par 28 which is bolted‘ to the casing ‘Ill at two places tially recessed therein, and‘ a pair of ?anged along the part 21 thereof contiguous with said wheels [2 and I2’ rotatably’mounted‘on casing casing 110.. The-lower parti28 of bracket 26 has l0 and supporting an endless band l3 to which is '30 secured thereto by bolts 29 the contact-free por secured in equally spaced positions av plurality of tion of support 22 so that the latter does not ?ash lamps Ill.v The lamps l4_comprise a light rotate about the hub'23 to which it is engaged transmitting bulb containing a combustible mate by the separable part‘ 30 thereof held in place rial, and a supporter of combustion, such as by bolts 3|.JThe part of bracket 26 parallel to oxygen. The combustible material, when ignited, produces a ?ash of actinic light useful for pho- ‘' 35 part 21 supports the end portion of ‘axle '25 more ‘ remote from casing to. t tographic purposes. The ignition, means com The‘lamp contacts 24, shown in Fig. l'arje con-y prises a tungsten ?lamentconnected across a pair nected. to, .the. current leading-in wires 'of the of current leading-in wires. Such lamps are dis. lamps 14 and consist'of wirespassing through and closed in the Fulton and Foote application Serial to the base '35" ofv the clamps M which I No. 461,578, ?led October 10,1942, and assigned; .40 “secured base is permanently secured to the light trans to The the wheel assigneeI2"of'this is mounted application. for rotation on an mitting lamp bulbs 36. The wires pierce the band I3, which consists of ?exible, electrically'insulat axle secured-to an arm l5 which arm is pivotally ingmaterial, such as heavy paper or an organic mounted at IS on the casing I0 so as to bemov able in a circular are about the pivot -l 6. ‘A' spring 5 45 plastic, and are bent over so as to clamp the band I3 to the lamp bases 35.; Thus, therlanips I4 ' I1 is secured to the casing l0 and the arm [5 are secured to the band 13 andthe wires consti and tends to move wheel l2’ away from'wheel tute spaced'contactsv 24 for engagement with the I2 so as to keep the band l3 under tension when spaced contacts 2 lrprojecting from‘ the insulating i the latter is engaged with the wheels l2 and 12'. The .band l3 carryingthe lamps I4 is inserted in £50 1 One of the contacts‘ 2| is connected by wire the apparatus by. removing the panel or cover body22; ' ' ' ' ' ' l8 (shown partially broken away in the drawings) of the casing l0, forcing the wheel l2’ toward the = 31 ‘to. one terminalof a source of electrical energy constituted by a batteryIof-‘cells in the battery wheel l2 against the tension exerted by the spring ll a su?icient distance to permit placing the band .bythe support 39>‘bolt’ed to the casing Ill. The case'38' supported between therwheels l2 and I2.’ ‘2,408,470 3 . other contact 2! is connected to the other ter minal of the source by the wire 40 shown in two parts in the drawings. It will be understood that the part of the wire 53 not shown in the drawings passes out of the casing I0 for connection to the terminals of a switch the operation of which 4 arm 44. The arm 44 is disposed between the casing It and the battery support 38 and moves freely between these members. The movement of the arm 44 and therewith the re?ector I I is controlled by the disc 49 having the projection to which supports wheel 5i. As the is controlled by an apparatus for synchronizing disc is rotated in the manner described below, the opening of the shutter of the camera with the the Wheel El travels along the arm 1M to permit ?ashing of the lamp it in the re?ector II. Such or force the latter to move. The disc at is jour synchronizing apparatus is well known, consti l0 naled to the axle 25 which is slightly ?attened, tutes no part of this invention and, hence, has as shown at 52, where it engages disc :29. Thus, not been illustrated in the drawings. _ I I by rotating axle 25, the projection 53 may be ro The re?ector II has a circular opening at its tated and thusthe re?ector II moved into the vertex which opening is large‘ enoughafor- ‘the two positions shown in Fig. l. The axle 25 is bulbs 3% of the lamps i4 toipass therethr-oug'h prolonged so ‘as to terminate outside of the cas~ into and out of the re?ector‘when-the latter is" ing it! and provided with a crank at its externally moved from the position shown in full lines in; l q protruding portion for rotating it. The disc 49 the drawings to that shown in dot-dash lines, thus may be rotated from the positionshown, in and back again. When the re?ector is in the posi which it is held by the force exerted by spring tion shown in full lines, the focal point thereof is 20 48 holding the pin 53 on the disc 49 against the within the’ bulb of the lamp It so that the light stop 54 secured to bracket part 28 between wheel emitted when the lamp is ignited .in the manner ?ange J20 and bracket part 27, to a position in described above is directed by. the re?ector. .II which‘pin 55 on disc 49 vrests against the stop‘ toward the objectto be photographed. . 56 and back again by turning the crank on axle There?ector ‘H is moved from ,the position 25 in the proper direction. shown. in full lines to that shownin dot-dash lines After the re?ector vhas been moved out of the in Fig. 1 to insert theband I3 between wheels path of movement of the lamps, by the mecha 12 and i2’ and to permit the movement of, the nism described above, the lamps are moved on band 133 with its attached lamps M after one the wheels I2 and i2’ to bring an unflashed lamp lamp has been ?ashed and the next lamp in the into position to be ?ashed. This is accomplished series. is to be moved into position to be ?ashed. asfollows: the mechanism for movingthe lamps Thus, the re?ector is moved, by the mechanism is synchronized with the above-described mech described hereinafter, out of the path of move anism for moving the re?ector I i and comprises ment of the lamps I4 beforethelatter are moved, by the mechanism also described hereinafter, to 35 an arm ‘55 rotatable on the axle 25', carrying a lamp engaging pawl 51 at its outer end portion bring the next lamp I4 of the series to be ?ashed and two ?ngers 58 and 5Q engageable with‘ the into the position where itscontacts 24 engage with stop 54 to limit the rotational movement of the the contacts 2| and the re?ector I! may be re arm 56. Arm 56 is disposed betweenf?ange ‘29 turned to the position shown in .full lines in Fig. 1 without hitting the lamps It on its return move 40 and disc 49. The pawl 51 is pivoted on the arm 56 in a direction parallel to the length of arm 56’ and is provided with a conventional spring . A brake for holding the lamps I4 stationary and stop tending to hold the pawl '57 ‘normal to while the re?ector II is being moved .andbetween the arm 55. Thus, in the position shown in Figs. periods of movement of the lamps“ is shown 1 and 4 the pawl '5‘! engages'w‘ith the ‘base of a in Fig. 3 of the drawings. .The brake comprises . lamp id to urge ‘the latter, when arm 58 is moved a .resilient brake-shoe 32 which is held against in the direction of the arrow, into positionto the inner surface of the ?ange I9 of the wheel !2 .by holder 33. The holder 33 is disposed be be ?ashed.‘ On the return movement of arm 55 the pawl 5'! will ?rststrike the next lamp has ' tween ?ange I9 and bracket 26, engages with the will then ‘turn on its pivot to pass by said lamp axle 25 and is secured against rotationto the base and will then snap back to its original lamp bracket 25 by the pin 35, . -- . ' . ' > engaging position normal to armb?‘when the The mechanism for moving the‘ re?ector H lampfhas'been passed. ‘ v I with respect to the lamp support comprised of the wheels I2 and I2’ and out‘of the path of move The rotational movements of arm 58 is con? trolled by the pin 66 thereon projecting the ment of the lamps I4- about the wheels I2 and I2’ is illustrated in Fig. 4 of the drawings. The direction of the disc 49 and engaginr1r with the mechanism for .moving the lamps through arcuate slot (H in the disc 159.» As is readily ap the position normally occupied by the re?ector parent from Fig. 4, the disc '45} may be rotated II is also shown in this ?gure. Referring to an appreciable angular distance in the direction Fig. 4, the re?ector II is movably supported by ofthe arrow before the pin iii! engages with and the slotted member iii to which it is rigidly se E2 of slot 6| to move the arm Stand therewith cured by welding, for example. .The slotted the lamp engaging paw-1 51. Thesefparts are so member AI is supported by the wheel 42 mounted related that as the disc 49 is turned by the crank on axle 43 fastened to the casing H! and a bush in the direction of the arrow, the re?ector ii ing (not shown) secured to the portion of axle 65 is first moved from the position in which it en 25 adjacent the, bracket leg 21. The member closes a lamp It to the position .,(shown in dot 2i and therewith re?ector H is thus movable on dash lines in Fig. l) where it is out of the path its supportsin the direction of the longitudinal of-travel of the lamps I4. With there?ector Ii axis of the re?ector. An'arm 44‘ engages mem in this position, the pin 89' on the pawl support ber éI through the slot 45 therein engaging 70 ing arm'ES engages the end 62 of slot Bi and as wheel’ 65' secured to member 4!. The arm 44 is the turning movement of disc‘li'fi continues, the pivoted on the casing M. at 4'! and is urged to pawl 5‘! is moved to bring the next lamp it in swing ‘in the direction of the re?ector VII by the series in line with the axis of the re?ector H spring 48, one end of which is fastened to casing and» into engagement with the contacts 2|. In It and the otherend of which presses. against 75 this position the pin 55 on the disc 49 and the ment. . . . . , ~ 2,408,470 thereof, and-means supporting said lamp support" ?nger 59 of arm _56erests against the 'stop 54. means, said. re?ector‘ and said actuating means Incidentally, these elements are preferably ‘in this position- when the band ‘I3 carrying the lamps I4 is inserted in the device. In this oper~' ation ii'one lamp ‘l4 'isiplaced in the position where its contacts 24. engage contacts 2| and its longitudinal axis is in the re?ector axis, the band 13 and the equally spaced lamps l4 thereon will injuxtaposition‘.‘ ~i - . . f I 1 . w > 2; A- multiple‘ ?ash lamp device comprising lamp’ support means arranged to support alamp carrier comprising alstrip carrying a plurality of ?ash lamps, Iaconcave re?ector movably sup ported adjacentsaidlamp support means and of su?icient depth to normally ‘surroundand' enclose be properly indexedin the device. one‘. of said lamps,~actuating means engageable After-the lamp to be ?ashed has been moved 16 with the; reflector ‘and a lampion said strip ‘so ‘as into the proper position for ?ashing, the disc 49 to synchronize advancement of said lamp carry is turned by the crank in the opposite direction ing strip on said lamp support means to move to that indicated by the arrow. The re?ector II successive lamps ?rst ‘into and then, after being is thus moved back to its lamp enclosing posi ?ashed, out of said re?ector together with dis tion and the pawl 51 to its position engaging the 15 placement of the re?ector out of the path of next lamp in the series to be ?ashed. The de movement of the lamps during each advancement vice is then ready to emit a ?ash of light when thereof, and means supporting said lamp sup the switch on the synchronizing apparatus is port means, said re?ector and said actuating closed. - . ' in juxtaposition. i A light transmitting member 64, illustrated in 20 means 3. A multiple ?ash lamp device comprising Figs. 1 and 4, may be secured by bolts 65, for lamp support means having spaced wheels to example, to the front of re?ector H so as to in ?uence the emitted light. The member may be a ?lter for screening-out or absorbing part of the radiant energy emitted by a ?ashed lamp. ' Mounting the lamps l4 on a ?exible band or endless strip I3 is advantageous not only for use support a lamp carrier comprising a strip carry ing a plurality of ?ash lamps, a concave re?ector 25 movably supported adjacent said lamp support means and of sumcient depth to normally sur round and enclose one of said lamps, actuating means engageable with the lamp carrier and the in the above apparatus in which a plurality of re?ector to synchronize advancement of said lamp lamps can be inserted and removed simultane carrying strip on said lamp support means to 30 ously to eliminate delay in taking a series of pho move successive lamps ?rst into and then, after I tographs, but is also useful in the manufactur being ?ashed, out of said re?ector together with ing and packaging of the lamps. Thus, a group displacement of the re?ector out of the path of of bases 35 for the lamps l4 may be secured by movement of the lamps during each advancement the current leading-in wires 24 in series relation thereof, and means supporting said lamp support to the strip l3 before the bulbs 36 are mounted 35 means, said re?ector and said actuating means on the bases 35. The bulbs 36 are then mounted on the bases 35 and the other steps in the manu in juxtaposition. 4. A multiple ?ash lamp device comprising facture of the lamps performed. After the lamps lamp support means having wheels arranged for I4 have been completed, the multi?ash unit com relative displacements and for supporting a lamp prising a plurality of lamps secured to the strip 40 carrier comprising an endless strip carrying a 13 may be packaged for shipment without han plurality of ?ash lamps, a concave re?ector mov dling individual lamps; ably supported adjacent said lamp support means The lamps disclosed in the application Serial and of su?icient depth to normally surround and No. 461,578 referred to above comprise a com enclose one of said lamps, actuating means en pact body supported in the lamp bulb, which body 45 gageable with the lamp carrier and the re?ector constitutes the sole source of light. Flash lamps to synchronize advancement of said lamp carry comprising loosely arranged combustible mate ing strip on said lamp support means to move rial, which occupies substantially the entire space successive lamps ?rst into and then, after being ?ashed, out of said re?ector together with dis provided with suitable bases having wires which 50 placement of the re?ector out of the path of may be passed through the strip l3. Lamps com movement of the lamps during each advancement prising such material are ‘commercially available thereof, and means supporting said lamp support within the lamp bulb may also be used when and a species thereof is disclosed in U. S. Patent means, said reflector and said actuating means 55 in juxtaposition.‘ Pipkin. 5. A multiple ?ash lamp device comprising The multi?ash lamp unit is claimed in appli- , lamp support means arranged to support a lamp 2,306,563, issued December 29, 1942, to Marvin cation Serial No. 508,495, ?led November 1, 1943, by Edward B. Noel, one of the inventors named herein. carrier comprising a strip carrying a plurality Letters Patent of the United States is: enclose one of said lamps, contacts of an electric ignition circuit for the lamps arranged to en gage the contacts of a lamp enclosed by said What we claim as new and desire to secure by 1. A multiple ?ash lamp device comprising lamp support means arranged to support a lamp carrier comprising a strip carrying a plurality of ?ash lamps, a concave re?ector movably sup ported adjacent said lamp support means and of su?icient depth to normally surround and en-' of ?ash lamps, a concave re?ector movably sup ported adjacent said lamp support means and of suf?cient depth to normally surround and re?ector, actuating means engageable with the lamp carrier and the re?ector to synchronize ad vancement of said lamp carrying strip on said lamp support means to move successive lamps ?rst into and then, after» being ?ashed, out of gageable with the lamp carrier and re?ector so as said re?ector together with displacement of the to synchronize advancement of said lamp carry 70 re?ector out of the path of movement of the ing strip on said lamp support, means to move lamps during each advancement thereof, and successive lamps ?rst into and‘then, after being means supporting said lamp support means, said ?ashed, out of said re?ector together with dis re?ector, said contacts and said actuating means placement of the re?ector out of the path of in juxtaposition. ‘ 75 movement of the lamps during each advancement close one of said lamps, actuating means en 2,408,470 7, 6. A multiple ?ash lamp device comprising lamp support means arranged to support a lamp 8 lamp support ,means to move, successive lamps ?rst into and then, after being ?ashed, out of carrier comprising a strip carrying a plurality said re?ector together with displacement of the of ?ash lamps, a concave re?ector movably sup re?ector out of the path of movement of the ported adjacent said lamp support means and of 5 lamps during each advancement thereof, and su?icient depth to normally surround and en means supporting said lamp support means, said close one of said lamps, a light ?lter disposed reflector, and said actuating means in juxtapoa over and substantially closing the mouth of said sition. ~ ‘ re?ector, actuating means engageable with the lamp carrier and the reflector to synchronous 10 advancement of said lamp carrying strip on said EDWARD B. NOEL. AUGUST W. SEITZ.