US938945A - Flash-light. - Google Patents

Description

J. ANDERSON.

FLASH LIGHT.

APPLICATION FILED FEB. 8, 1909.

Patented Nov. 2, 1909.

J. ANDERSON.

.FLASH LIGHT.

APPLICATION FILED FEB. 8,'1909. A

Patented NW2 1909.

2 SHEETS-SHEET 2.

sTATEsrATENT omucn, f

JOHANNES ANDERSON,A v'on cH'IoAGd-ILLINOIS, AssIGNoR OF ONE-THIRD To EATON s. PATTERSON AND ONE-THIRD To CHARLES A. SWEET, BOTH OF cHIoAGO, ILLINoIs.-

FLASH-LIGHT.

' Specincation of Letters-Patent.

'Patnted Nov. 2, 1909.

. Apiica't'ionaiea February s, 1909.- sriai No. ganso.

TOaZZ whomfit may cmvcem:v i i Be it known thatl, JOHANNES ANDERSON, a citizen of' the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new 'and' useful- ,Improvements in 'F1ash-Lights,'of whichthe following is a specification, reference being had to the'drawlngs forming a part thereof.

" operating a Hash-light for' photographic purposes vtected v. degrees of pressure of the pneumatic device for operating them.'

.The purpose' of this invention is'to pro-l vide an improved `device for producing and in which vthe fulminate sha1 be 'profrom premature ignition, and also in which there shall be provision for connection with the shutter of the camera to coordinate the action of the shutter with the flash-light.

It conslsts in the elements and features of 4.construction and their combinations shown and described as indicated in the claims.

'- Inv the drawings:-Figu`re 1 is :5J-partly sectionalv side elevation of a device embody-I ingl this invention, section being made Ythrough the operating parts having movement. Fig. 2 is a similar view of 'a modificationadapted for electric 1gn1t1on.

In Fig. 1 of the "drawin s there is represented a shelf or pan, A, or the'fulminate that is to be ignited for producing the iashlight, a shield,`B, erected at one side of the pan,'A,`a lamp, C,lwhich maybe understood to bethe' customary simple alcohol lamp situated lso that its flame, represented at- C1, may by proper jet be directed toward the fulminate, and being for 4that reason opposite an ignition aperture, 1b, inthe shield, B. D is ai small reservoir foraninlammable liquid, such as gasolene, having ajet'nozzle, D1, projecting toward `the flame, C1,'1n'such direction that a jet from said noz'zle will drive said flame .in the direction of, and yifsuiciently forcible, through, the ignition which the shutter, E,Qmust movev from its Alowest position in order .to register 'its aperture, b, for igniting 4the fulminate. The primary feature ofthe invention conshutter so ais to insure its be` openedvbe' fore thei nition ocurs, and 1n to adapt tie device'to be adjuste for producing this result when operated'in connection with camera shutters requiring varying .the devices being so constructed that the 'can be Vdriven back comprise a cylinder, G, mounted `ixedly in 'end of the oyllnder, andhavingtheshutter,

articular' H, is long enoug V 1n; 1, which the .ignition V.etect'ed by atiame projectedby a jet against the fulminate, the invention A' comprlses, 1n combination with the particular elements of the structure above .de-

scribed, a shutter, E, for closing the ignition aperture, Z), -and means for operating such shutter, adapted to be actuated by the saine air impulse which may be produced from a f bulb, F, for rojecting .the gasolene jet from thenozz e, D, against the flame, C1, first eliect ot the impulsefisto open they'. shutter, the production of the jet following immediately, and the shutter. closing imme-l diately upon the cessation of the impulse, so that'the ignition is. instantly lfollowed by 70 the Vclosing of the shutter before any. flame i through theignition aperture.A 1 f The devices for the purpose indicated v relation to the pan, A, and shield, B, having: aying in it a piston, H, from which. a stem,

1, extends u ward, emerging atl the upper E, secured to itat its upper end. A spring, J, coiled around the stem, H1, within .the cylind'eni'eacting against the piston head, H, holds it normally at the lower end of thecylinder, and yieldingly resists its .up-stroke. "i

The shutter, E, at normal position at whichv it isA held when the iston is at the lower end of the cylinder, c osesthe ignition aper'- ture, b, but has an aperture, E1, which rega isters with said aperture, b, when the shutter is thrills/thy the piston to the upper limit of travel of the latter. The lower end of the,

cylinder, G, terminates in a connection,-G 15:.

for the tube, K, of the customary oompres-y sion bulb, F, for compressin the air v`to drive the piston up in the cy inder. Ata.

distance from the lower end of the cylinder,

G, approximately equal to the distance aperture, E1, with .the ignitionl post,f1oo Z2, the cylinder, G, has a lateral port, g, connectedgby a4 tube,-L, with the gasot lene reservoir, D" andthe piston head,

h to cover this port g, when it is at thebottom of the cylinder.` From .thisconstruction it results that the first effect-'of an impulse` produced by the bulb, F, is to'lift the shutter. to the point of registration; and instantly upon' that point ies `being; reached, the air pressure operates l11o through the port, g, and duct, L, through the gasolene reservoir to force the gasolene vapor jet. from thev nozzle, D1, against, the flame, C1, driving the latter through l the now uncovered jet aperture, b. The single air impulse produced by the operator compressing -the bulb, F, of course gives the piston a continuous vmovement to the limit to which it can be driven by such impulse, or to which it isl permitted-to move bythe construction; and in'this single movement,A at the first stage the shutter is open; at an immediately'suc'ceding and very short stage the gasolene jet-is produced, and immediv-ately thereafter the limit of movement being reached, the operator'. having released the bulb immediately upon having pressed it i v guickly, the piston-fis retracted by the spring,4

andthe shutter-descends, closing the port; andfpressure on the gasolene-reservoir hav-- ving beenonlyinstantaneous, thev jet was produced only" long enough to drive thefla'me' .through-the open port, b, against the 'f ulmi-` nate. Into the upper cap, G1, of the cylin- 25v der there is. screwed the tension'sleeye, G2, Whose vlower end' within the cylinder bears upon a-cap, J1, -which s'eats the upper end of' sprite J, said tension sleeve 'being deof'r'egulatethe tensionof said spring' 'screwed down more 'or less through G1. Thisis important in order that the cap,

the ai'r pressure necessary to operate A the particular camershlitter in connection with l struction' is shown, theiffulminate ,whichr thefdev-ice is -to be employed. may be reduced jinthebulb,Y l", before the piston, I,` can f be forced up '.'fa'r enough` tofunco'ver theI "ort," g,"and.thereby operate the igniter.

`v i e connection, H3 to they bulb-Q F, hasV a side branch, h", forconnection by aftube, M to `the camera Shu vter (o illustrated),

which mayybeljunders'tood' to be equipped withthe customary means for'l operatin it 4byfair f impulse. When thus connecte it' Will'be observed that the rst portion ofthe ,impulse vfrom'the bulb, F, when compressed bythe operator, will operate through the branch, h3, andz duct, M, 'to open the camera shutter, fthe ceilingoffthe ignition port, b, 'andfthe 'pro uction of the )et and consequentf ignition' of the fulminate following in the order stated, sothat the shutter will be open When-the" produced with-v out'jseparate'attention the, operator. When l,the ignition is to be produced by an electric current'the device may loe-modified as shown in Fig.` 2, so that the ,piston stem, H1,;i ns tead'of operating the shutter, consti-` tutes'or carries an electrode in the igniting circuit, which-is' thrust against; the other electrode,'closi'ng'the circult nbyr thegstroke of the piston, which, in 'the origina-l; operates the shutter.` .In` Fig.l 2, thir bein'grepresented as Sup or mgthe- 1 postsPP, of acarbon lament, p, a circuitil but f one pole offthe battery cell, S, a Wire, N1, extendingrmmtheptherpble of the-batter to anele'c'trod'eQ R'jan i "Wire, N2, exten ing-from lthe 'other second electrode, T, which is preferably' a spring mounted in.. osition to. be forced against the electrode, v fby :the: up-stroke of thev piston stem, H1.

the stroken the pistori-,j'obvously may be igniting device. T1'1e 'te11 s ionsleeve,' G2, per? 4as in that of Fig.' 1, ofvtensionin'g the sprin bulb 'era shutter. 4SLI claimgyflo 1?'1. A-filash-ligh't device comprising a ful- "minate support; a shield having an lgnition aperture;`- av` shutter for controlling. said fand means by which the piston is heldnorigniterf "eratin'g device, and a branch duct badi ereto trom said cylinder at a point lpressure device by the piston at normal povcovered-in its shutter-operating stroke. .Y

l Ininate support; a shield havinganignitin aperture; a 'shutter for controlling suc aperture.; a shutter-o erating device comcylinder for oplerating the piston, th'econnectien from t e Vair pressure device"to the mediate the piston vand the air-pressure dean igniter; an-lgnlter-operatlng dev1ce,'an a duct leadin thereto fromthe cylinderlat a point in the atter'where vit is cut' effin the ered by the piston in its operatingstroke.

ort forthefulminate; an igniter for4 prising 'a cylinder an between the pressure device and the Vpiston f the spring,

wire, N, extending from 'one binding post to I.

b tlingpost, P, -tor yaformsl in this co'nstru `2tion'the saine function mally ,jat shutter`-elding x position; an air,- .j pressure device` for operating the piston; an

in jthef.atteryvhere'it is cut oil'. from .the airulrninate'; an igniter-oeratingdevice coni-1 A a piston therein; an air pressure device for operating the' isf4 ton; a branch leading from the 'air con uit Theparticular lmode 'i of connectin up the circuit be closed-.by

modified. yveryv vWidelyv Without departing fromthe,invention asA applied to an electric*v accordingjto the camera shutter withlwh'ic 'the device isopera'ted to cause Ait to resist the movementfgof the piston.A and delayjtheI vignitiori'nntil"the pressure produced in the F, is IVsuiiicient' for operatingthe camaperturefa shutter! operatingv device conf s1sting .o f. a cylinder-,and a piston thereln,

sition, and' is passed byv the piston and un-4 2. A l'flash-light device comprising a fulpf yprising'na cylinder an a piston thereinan`dan air-pressure device connected with the 3. A flash-light device comprislng a.4 sup` i L cfor connection with a camera shuttera` l spring resistmg the movementof the` piston, 1@gandineansforadjusting at will the tension ess, o45

A 4, A flash-'light device comprising a` support for the fulminate; a shield having an ignition aperture; a shutter for controlling such aperture; a flame jet device for ignitl ing ythe fulminate through said aperture; a device for controlling said shutter consisting of a'fcylinder and a piston thereinand a spring for holding the piston normally at .shutter-closing position; an air pressure device for operating the piston; a .branch duct leading to the ame jet device from the cylinder'at a pointin the latter where itis cut off from the air ressure device by the piston' at normal posltion and is passed by .ing the fulminate through said aperture; a

device for controlling said shutter consisting of a cylinder-and a piston therein, and a spring for holding the piston normally at shutter-closing position; an air-pressure device for operating the piston; a branch duct leading to the flame jet device from the cylinder at a point in the latter lwhere it is cut olf from the air pressuredevice by the piston at normal position and is passed by the piston and uncovered in itsshutter-operat-l ing stroke, the connection from the air' pressure device to the cylinder having a' branch leading 0H between the piston and a camera'shutter', and means the piston-controlling spring.` In ltestimony whereof, I have hereunto set my hand, in theflpresence of two witnesses,

'at Chicago, Illinois, this I5th day of Feb- CHAs'. A. SWEET.

lthe .air-pressure device for connection with for tenslonmg

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