US873242A - Photographic flash-lamp. - Google Patents

Description

Ninn isTnT-s PATENT OFFICE.

JAMES iiiGLis, or TORONTO, orTAiiiomiNAni; r. DuNDiis Toni),einiiiris'iiniToev oiusAiD jiNGiiis, DEcEAsED, AssiGNoR, Bv MEsNE ASSIGNMENTS, To GEORGE ai-MVRENGE, Oi"

' r.GH,Italia ILLINOIS;

Specicatori'o'f Letters Patent.

Pi-IoToGnAPHIc FLASH-LAM?.

eatentea ne. 10,1907.

Application tiled June 24. 19O4., S8Ii81N0 214.001. Renewed October 29.1906.V Serial No. 341.200.

.allfwhom it .may concern: j.

#Be itknownthat I, JAMES ING-Liset the city of .Toronto, vin the countyof-York, in the Province of Qntario, Canada, have invented .certain .new and useful Improvements in Photographic .Flash-Lamps, of which the fol,

lowing is specification. My inventionjzrelates to improvements in photographic flash lamps, and the objectof the inventionisjgjto devise a lamp and hood therefor, will enable a photographer to 'take a flashllightpicture Without allowing vthe smoke from the burned flash-powder to escape into the room and at the saine time to soften the light'from the flash so as to producea soft and artistic negative.

.A further object is to so construct said hood 4that the Walls may yield freely to the conciisa` sion of the explosion, While a portion of the .contained air ispermitted to esca e, as Well as to render the hoodfire-proof sot iat the ignition may be made directly therein without the intervention of other protective featuresy andwithout'danger of igniting the hood all of which is hereinafter more particularly described and definitely point-ed out in the claims.

In the drawings, Figure 1, isa perspective fview of my improved hood, showing novel means'fr suspending the same as Well as v ,ineans for supporting a 'Hash-lamp therein,

.Figl. 2, is a central vertical vsectional view of y tlzjiehood and supporting standard, Fig. 3, is

`fa perspective view of the essential features of Y 3.5.

tachable connection between .the lower por- .tlhefla'sh-lai'np, and Fig. 4, is adet ail of a detion of the hood support and that which connects'with the hood.

. Corresponding letters 'of reference inthe ldifferent figures indicate like parts:

A Referring to the drawings, 1, Figs. 1 and y 2, represents a hood or bag formed Ifioiii can- .vas or other suitableflexible fabric o-r material, said hood being closed upon tbe sides and at the top, but preferably arranged to be normally Open at the bottoni, a draw-string 2, or other suitable means, being provided for closing it. In the instance illustrated,

' said bag is represented as being .rectangular in form although it is obvious that its shape may be varied indefinitely. The front of the bag is by preference made partially or Wholly transparent or translucent. This may be acl' complished either by constructing the same from tracing .cloth o r by making 'it of thinner or lighter material 'than that ofthe other parts, although it is manifest that the entire body may be thevsame throughout. I

vinasmuch as my inventioncontemplates the ignition of the flash-light inaterial'directly vWithin the bag, without the intervention of any supplemental casing'y or special ignition chamber or shield, it is essential that said'bag should be rendered fire-proof. -This may be .accomplished by treating thefabric with sul,-

iid of barium, or other suitable fire-proofing composition. j

, Theobject of having the bag normally open at the bottom is toprovide for the vescape of air therefrom and to permit vthe liberated gases toexpand When the explosion of the flash-light powder occurs it being understood that the flash being iliade upwardly towards-the closed top causes the gas and smoke to ascend, thereby taking the place of a body of air which is eX elled from below.

While it is obvious t iat the bag may be suspended in any `one of various ways, I prefer to provide a light port able support therefor which may be readily folded and transported. 'In the example shown, l'haveprowhich is mounted a sliding ring 4., to -which is jointed ly attached by means lof screws or pins 5, legs 6, lv'vhich. are jointedly connected with a ring 7 upon the lovyer part of the niain vided as a main support, a tube A3, upon standard by means of braces 8. f The ring` in ay be adjusted and secured in any desired positional-nd when moved to the top, the legs are caused to fold conipactly against the standard. Telescopiiig sections 9, 10, .are fitted Within the main tube 3 and vsecured vat any desired height by means of setescrews 11 and 12. f l

lnasniiich' as it is desirable to have the sup'- porting structure very light, "Ix haveconstructedit so that the. tripod may stand (-.en-4 I trally beneath the hood. -I valc-coiiiplish this result by attaching an aini to the top of the ,section 10,fextending it rearii'ar'dly tothe back of the main body of the bag'and rigidly connecting to its rear end a short- Vvertical portion 14 having a reduced part-.15 Whig-h isadapted t-o-enter the lowerend of 'atubular section 1.6. The latter sarranged. toA eX-l tend above the top of the bag, and is provided with a notch 17 in its lower end adapte Y ed to engage a pin 18 to prevent the sectionvv from turning; A vhorizontal arm 19 'is pro-v vided vvith a piiitleQO, which is lfitted to enter -the upper end of the .tube l`, so as to hold said arm rigidly in position. Hooks 21,721. are att-ached't-o the arm 16 and adapted to pass through .the hood and engage hars 22.

`22 t'or the purpose of suspending` said hood in an expanded position.. 'I prefer to provide arecess' for the recepn plate 27 having an opening therein provided tion of the standard and horizontal arm by extending the lower and rear, portion of l0 the bag inwardly as shotvn, and in connection therewith, in ordertoproperlydistend the,

bag, I secure therein a horizontal cross-bar 23, to the middle of which is attached al ringv 24, adapted to be connected with the'part lai by means of a hook 5.l v

2 y An elongated opening 26 isformed inn-the back of the hood in whichis secured a frame- "itha hinged covering ilap`28. A tray. or flash ,pan 29 formed from sheet-metal `is adapt-ed to fit vv ithin the opening 26, said tray being'provided with a rear flangega to close said opening.' A bracket -30 is rigidliv at'- tachei'l to the rear of thetray'l and is provided withaclip. 31 for securing the tra-y to the bar .16. Said bracketis'.preferablvU-shaped as shown and is arranged to support a lamp resusual air bulb 36 upon the end.

ervoir SZjhaving burner'33 immediately above 'and in the depressed :portion ofthe bracket. An ignition tube 34 is extended through the front portion of the bracket with its forward open end in the tray. An opening in the rear portion of the bracket is con-- nected'ivith a flexible tube, 35,'having the l,The operation of said device is as follows: T he hood' being suspended -as shown, the

lamp is lighted, the flash-light powder placed in the tralv and the latter secured in position in the opening 26. The. pressure of the bulb causes the ila-ine to be blown through the igvinting tube, thereby` igniting the po\\'iler.

.opening in the bach thereof, 'thetrav of the flash-lamp secured to saidv standard and e.\;- tending through said opening, and an open ,hottomprovi'ded with means foi; collapsing thesame, siibsltantialliv as described.

, @mln a flashlightapparat-us, the combina in vi nvention 1 a flash-lamp, the combination with` tion of a bag made of llexible ina-tcriah'a portion of said bag at least being translucent,

means for supporting said bag with a portion thereof collapsed so as to permit the bag to expand under internal pressure, means for supporting a'flash light charge within said bag, and meansfor i-gniting said charge.

3, In a flash light apparatus, the combination of a bag composed wholly of a flexible material, a portion of said bag at least being translucent; means for supporting said bagin a partially expanded Aconditions()v as to- 'p'ermit it to .expand further under internal pressure, means forsupportinga ila-sh light charge within said bag, and means for igniting said charge.

4. In a Hash lightvappara'tu's, the combination of a bag composed wholly of a flexible '.ire. proot1 fabric a portion of which at leastis translucent, of means for supporting said bag in a partially expanded condition so as to permit it to extpand `further under internal pressure, means or supporting a ila-sh light charge within said bag, and means for igniting said-charge. y l

5. In a flashlight apparatus, a bag coinposed 'Wholly of a flexible fire-proof material, a. portion of the bag at least being translucent, means-for looselvsupportingsaid bag in an expanded condition which permits the bag to expand further under internal pressure, means .for supporting a flash light charge Within said bag, and means for ignit ing said char e.

6. In a ilas light apparatus, the combination with a barxr o pen at one 'end and composed of a flexible tire-proof material. a portion of vvhicli at least is translucent, of means for yieldinglv supporting said bag in an expanded condition so as to permitit to expand further under .internal ressurc, tho mouth ofthe bag being'atl the `ottoni, of means for supporting a 'charge of tlash light material ,within saidv bag, means for'igniting said charge, and. means the. bag. T. In a ilash light apparatus, the eoinbination with a collapsible fire prooiz receptacle a portion of which at .least is translucent. means for supporting said receptacle in an expanded condition which permits it to expand further under linternal pressure, means for supportinga flash light eliargeu'ithin said receptacle.' and means l'oi' igniting said charge.

for closing the mouth ol JAMES lNGLlS.

` fitnesses:

I. I. HOLMES, M.. MCLAREN.

Images