US1088695A - Photographic apparatus. - Google Patents

Description

E. GOLDBNSKY & P. H. BARTLETT. PHOTOGBAPHIO APPARATUS. APPLICATION mum me. 11, 1912.

Patented Mar. 3, 1914,

- mvsurons 33 BY @wrw www M UNITED STA ES PATENT OFFICE.

Ems GOLDENSKY arm PERCY H. BARTLETT, or PHILAD LPHIA, rnNNsYLvama.

PHOTOGBAPHIC APPARATUS.

1,088,695, I Specification of Letters Patent. Patented Mar, 3 1914 1 Application filed August 17, 1912. Serial No. 715,557.

To all whom it may concern: to the core 27 of a solenoid whose winding Be it known-that we, Enms GOLDENBKY is 28. Normally the contact lever 23 is in and PERCY H. BARTLETT, citizens of the contact with the terminal 29 connected with United States, residing in Philadel hia, the neutral conductor 19. The movable con- 60 5 county of Philadelphia, andState of enntact lever 23 is adapted to engage, as later sylvania, have invented new and useful Imexplained, with contact terminal 30 in elecprovements, in Photographic A paratus, of trical communication with the conductor which the followings a speci cation. 20. The winding 28 of-the solenoid has .Our invention relates to photo raphic apone of its terminals connected,for exam- 65 paratus and a system particular y adapte ple, to the conductor 18 while its other ter- ,to studio photo aph whereby the phominal connects by conductor 31 *with a tographer is in epen ent of dayli ht and switch, described later,whose other terminal depends upon artificial lighting of is subconnects by conductor 32 with-the conductor jects, 19. B represents a bulb such as commonly 70 Our invention resides in a system inused foractuating the shutter of a camera, such shutter being here indicated at S, tube volving sources of light whereby the sub I ject to be photographed is first lighted by "33 extending from the bulb to the shutter, as well understood in the hotogra hic art.

relatively low intensity sources and during the period of exposure of the sensitive plate The operation is as f0 lows: hen the 15 go or film these same sources emit. light of subject is in osition, the switch 22 isclosed, greatly increased intensity. Andin this whereupon t e lam s L" are subjected to connection our invention resides in means the voltage existing etween the conductors for simultaneously operating the camera 18and 19, for example '110 volts. These shutter and .increasing the yoltage imlamps then glow at their normal brilliancy o 25 pressed upon the lamp terminals. and the sub ect becomes accustomed to this lightbefore exposure is made. Upon pressin the 'bulbB the shutter S is opened, as

Our invention resides in the features vv'el understood in the art, an s1mul hereinafter described and claimed.

For an illustration of'some of the forms taneousl'y the conductors 31 and 32 are 5 our invention may take reference is to be had to the accompanying drawings, in brought into electrical communication with which: 1 each other, by mechanism such as later de- Figure 1 is a diagrammatic view illusscribed, whereupon current will flow from trating a system for increasing the voltage conductor 18, through the solenoid winding impressed upon the electric. lamps at the 28, conductor 31, conductor 32, to the conno ductor 19, thus energizing the solenoid and causin its core 27 to be attracted toward the le t, moving the lever 23 in opposition to spring 25 into engagement with contact 30, whereupon the lamps L will be subject- 95 ed to voltage higher than their normal voltage, as for example 220 volts, this being, for example, the difference of potential between the conductors 18 and 20, and these lamps then glow at extremely high intensity 100 and illuminate the subject su ciently for short exposures. This increase in intensity of the lights coming from the lamps L,due to the fact that the lamps were previously glowing, does not startle the subject nor 106 35 time exposure is made. 'Fig. 2 is a diagrammatic view illustrati a modified system for the same purpose. igl. 3 is a longitudinal sectional view throug a bulb and contacting or switch a paratus. Fig.4 is a 40 longitudinal sectiona view through a modified form of switching and shutter actuatinggpparatus. I i

e erring' to Fig. 1, the wires'18, 19 and 20' represent the conductors of a three wire system, the conductor 19 being known as the neutral wire or conductor. The lamps L, preferably tungsten tantalum, or other metallic filament incandescent lamps, or other incandescent lamps which will stand repeated subjection to voltage much cause other conditions found disadvantahigher than normal voltage, have terminals geous as when making flash light exposures, connected to the conductor 21, adapted to as by flash powder. As soon aspressure communicate through switch 22, with the upon the bulb B is released. the shutter movable contact lever 23, pivoted at 24, and closes and the solenoid 28 is deenergized and no normally held in the position shown by the the spring 25 restores the lever 23 to engagespring 25, and connected by pivot link 26 ment with conductor 29, whereupon the lamps L are again subjectedto normal voltby the system illustrated in Fig. 2. Here the lamps are connected, the other terminals of the remaining lamps being connected to the conductor 18. The contact 41 is connected with conductor 40, and the contact 42 is connected through conductor 43 with conductor 18. The movable contact members 44 and 45 are insulated from each other by member 46 carrying the contacts 44 and 45 ing them at 47. A

core 27 of the solenoid. The lamps L in this case may be 55 volt lamps, pairs of which are connected in series with each other between conductors 18 and 40, the difi'erent pairs being connected in parallel with each other between these conductors l8 and 40.

The operation is as follows: hen the .subject is in position, the switch 22 is closed, whereupon current will flow tential between conductor 18 and 19 being, for example, 110 volts. The lamps L burn therefore at their normal intensities because each lamp is then subjected to its normal potential difierence, for example, 55 volts. When the bulb B is pressed, the shutter S is actuated and the conductors 3'1 and 32 brought into electrical communication with each other, as described in connection with The solenoid 28 is now energized it attracts its core 27 toward the left swinging the members 44 and 45 in a counter clockwise direction upon their pivot 47, causing contact 44 to leave contacts and 39 and to engage contacts 34 and 37 contact engaging contacts 41 and 42. Now current flows from conductor 18 through the upper set of lamps through conductor 38 to contact 37, through member 44 to contact 34, to conductor 19 with the result that the upper set of lamps is subjected to 110 volts,

or twice their normal voltage. Simultaneously however current flows from conductor 18 through conductor 43, Contact 42, member 45, contact 41, conductor 40, through the lower set of lamps L to conductor 38, contact 37, contact 44, contact 34, to conductor 19, thus subjecting this set of lamps to double voltage also. In consequence all the lamps low with extreme intensity. And when t 1e exposure is terminated by release the spring 25 restores the members 45 to the positions shown in Fig. 2 where the lamps glow at their normal intensities.

As an illustration of one form of means for to which Movable longitucating with the hollow member 48 the tube 49 is attached. dinally of and around the tube 49 is the tube 50 having the opening 51 communicating with the tube 33 extending to the shutter. Registering with the opening 51 is the elongated opening 52 in the wall of the tube 49, longitudinal and rotary adjustmeutof the tube 50 upon the tube 49 maintains these openings 51 and 52 in register, but changes the position of the tube 51 longitudinally of Within the tube 49 is secured the member 53 having apertures 54 and carrying the screw 55 to which is connected a spring 56 whose other end is connected to the piston or plunger 57 to which is secured a stem 58, preferably of insulating material, carrying the bridging contact 59 adapted to bridge the contacts 60 and 61 supported on the insulating member 62 fixed within the tube 00 The conductors 31 and 32 contact y causing the ensitioned that contact 59 has engaged or almost engaged contacts 60 and 61 before it uncovers the port or opening 52 to allow air to pass through the tube 33 to shutter.

In Fig. 4 a cylinder 63 communicates through actuate the apertures 64 with the tube 33 extending to the shutter. The plunger 57 is ating said second switch and said camera 60 moved in this cylinder 63 by pressure upon shutter. Y .the head 64 upon the rod 65 to which the 4. The'combination with a plurality of inplunger 57 is attached, finger grips 66 being candescent lamps havin filaments capable provided upon the cylinder 63 so that the of withstanding repeate sub ection to voltevice may be actuated by one hand. The ages higher than normal, of a'icamera shut- 65 motion of the plunger 57 is opposed by the ter, switching means for subjecting said spring 67. Surroundin the rod 65 .is the incandescent amps to voltagehigher than contact 68 adapted to ridge the contacts normal, and meansf-or" simultaneously actu- 60 and 61 supported by and insulated from ating said shutter and said switching means.

the cylinder 63, the contacts 31 and 32, as 5. The combination h a plurality of in- 70 before, connectin with the contact 60 an candescent electric lamps, of a camera shut 61 res ectively. hen the head 641s pressed tor, a three wire system of electric current towar the right the plunger forces airaheadsupply, said, lam s normally connected to of it through tube 33 to actuate the shutter.- c nductors of sai three w re system wh'ere- And ont t, 68 c g g ont t 60 d" 61 by said lamps are energized at predeter- 75 to close the circuit of the solenoid, the plunmined voltage, means for transferring said lamps whereby said lamps are energized at ger 57 and rod 65 continuing their movehigher voltageof said three wire system, and

ment, if necessary after the engagement of means for simultaneously actuating said shutter and said transferring means. 80

these contacts, t rough the member 68 When the pressure'upon the head 64 is released the spring 67 retracts the lunger and 6. The combination w th an l t i fi ll in 69 i d b th .65 engages lamp, of a camera shutter, a three wire sys th member 63 d carries it awayfrcm tem of electric current supply, said lamp contacts 60 and 61,' causing denergization o a y nne ted to two conductors of I saidthree wire s stem, switching means for 85 transferring sai lamp to another pair of of the solenoid.

conductors of said three wire system, and

While Figs. 3 and 4 give examples of means for simultaneously operating the means for simultaneously actuating said shutter and said switching means.

shutter and closing the solenoid circuit, it is to be understood that w-e'are not limited .to y

7. The combination with an electric lamp, 90 of a camera shutter, a switch for transferthese constructions, except where it is specifically stated in the claims; and it is to be understood that the contacting mechanism g 581d p from a Source of w r o age to a source of higher voltage, electromagnetic means for actuating said switch, a

I may be situated at the shutter and moved by the shutter mechanism itself when actuated second switch controlling said electro-mag- 96 netic means, and a bulb for simultaneously either by bulb or any other means.

'What 'we claim is: 1. The combination with an incandescent a fl g Sold Sh tter and said second swi c 8. The combination with a three wire syselectric lamp, of a camera shutter, means for energizing said lamp at predetermined volttem of current supply, of a plurality of elec- 100 trio lamps normally connected between conductors of said system deliverin current age, switching meansfor causing energization .of said lam at higher voltage, and means for simu taneously actuating sai at low voltage, switching means or transferring said lamps to conductors of said s stem delivering current at higher voltage, 1 e ectro-magnetic means for operating said shutter and said switching means. 7 2. The combination with'apluralit of inswitchin means, a camera shutter, and means or simultaneously operating said candescent electric lam s, ofmeans or supshutter and said electro-magnetic means.

plying cur-rent at .di erent voltages, said amps normally energimd at. a lower voltage a camera shutter, and means for siultaneously actuating said shutter and subjecting said lampsto higher voltage.

- 3. The combination with'a plurality of incandescent lamps, of 'a camera shutter,means for energizing said lamps at predetermined volts e, a switch for-causing energization of said amps at higher volta e, electro-magnetic means controlling sai switch, a sec- 7 ond switch controlling said electro-magnetic means, and means for simultaneously actuaffixed our signatures in the presence of the two subscribing witnesses.

ELIAS GOLDENS'KY. PERCY H. BARTLETT.

Witnesses:

ELEANOR T. MCCALL, BEATRICE WHITNEY.

In testimony whereof we have hereunto

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