US837084A - Apparatus for illuminating photographic studios with electric incandescent lamps. - Google Patents

Description

No. 837,084. PATENTED NOV. 27, 1906. P. G. VON DER LIPPB.

APPARATUS FOR ILLUMINATING PHOTOGRAPHIG STUDIOS WITH ELECTRIC} INGANDESOENT LAMPS.

APPLICATION FILED JAN. 9, 1905.

illuminating photogr a v UNITED STATES PATENT OFFICE.

PHILIP? GEORG' von DER tires; or VIENNA AUSTRIA HUNGARY. APPARATUS FOR ILLUMINATING PHOTOGRAPHIC STUDIOS WITH ELECTRIC INCANDESCENT LAMPs.

Specification of Letters Patent.

Patented Nome-7, 1906 Application filed January 9,1966. Serial No. 295.241.

Incandescent Lamps; and I do hereby devclare the following to. be a full, clear, and exact description'of the invention, such aswill enable others skilled the art to which it ap pertains to make and'use the same.

This. invention relates to a paratus for aphic studios with elec' tric incandescence m ma be suitably distri uted over the object to e photographed by using a more or less considerablenumb-er of lamps, "which can bev varied in position and distrlbutionoverthe section, and a horizontal section 0 carrier which may be substituted for one of "studio in any desired arrangement.

In the accompanying drawings, Figure Us a plan of the illuminating ap aratus. Fig. 2 is a side elevation of one mo e of suspending the top lights. Fig. 3 shows an under side lan. and a section of one of the top-light amps. Figs. 4, 5, and 6 are respectively a front elevation, a side elevation, 1partly in a lampthe separate lamps.

The incandescence. lamps 1 are provided with reflectors 2, ofwhich one may contain several lamps. Those lamps which may serve astop lights are arranged in known manner on naked wires, so that they can be shifted The wires are stretched in insulating-tubes 3, having a longitudinal slot or beside rods carried in frames 4. The latter are suspended by a s stem of pulleys and counterweights 5, so t at they can be raised and lowered and will remain in any position from beams 6, which have rollers 7 to travel on beams 8, also provided with rollers to travel on beams 9. This travel of the beams 6 and 8 may be effected by hand with aid of ropes or in any other suitable manner.

' It is obvious that as each separate lamp can be shifted along the-tubes 3, while each series of lamps hanging from the tubes can be raised and lowered and moved in a horizontal plane in two directions at right angles to each other, the light can be brought tothat position which is best for illuminating the object.

In order that the light-rays may be better concentrated on the object according to the distribution of the lamps, each reflector 2 has s, whereby the light.

' a slot ektending'from' its summit along a -merldian and is rotatable on the lamp-carrier both around its geometrical axis and around atransverse axisxat right angles to the planeof the slot 10. Through these slots the lamp-' wires extend'into the tubes .3. By turning .the reflector first around its transverse axis until the lamp-wires are at the summitend of the .slot and then around its geometrical axis the positionof the plane of the slot andthe transverse axis of the reflector can be va- 'ri'ed as desired, and by subsequently turning the reflector on its transverse axis its geometrical axis may be brought into any desired positionthat is to .say, the cone of light from the lamp may be directed as required.

Instead of hanging the separate lamps 1 on the'conducting-vvires they may be suspended ,2

in lamp-carriers 16, which can-carry several lamps, one above the other, as shown in Figs. 4, 5, and 6. a

The carrier 16 advantageously consists of two parallel and side-by-side slotted tubes 11, of insulating material, in each of which a corrugated spring copper strip 12 is inserted in such a manner that the crests of the corrugations bear against the back 'wall of the tube.

The naked hooked ends 15 of the lampwires are inserted into the slots in the tubes 11 so that each end lies between the res ective copper strip 12 and the back wall 0 the tube 11, where it is securely held owing to the elasticity" of the corrugated strip in good conducting-contact. with the latter. The

large vertical surfaces, such as pictures or the like.

- Besides lamps 1 arranged as described other lamps may be movably arranged in the studio to supplement the light shed upon the ob'ect by the lam s 1.

- lhe lamps use may be electric incandescenoe lamps, whose light is made more chemio ally active by increasing the potential at the I lamp-terminals considerably above its normal value. This'allows the distribution of the light to be regulated by placing the normally burning lamps without necessitating work with a too glaring light and the increase.

of the light to be effected by raising the pomeans for shifting such frames indpend ently of each other vertically and horizontally and means for supporting electric glowlamps on such conducting-Wires for electrically connecting them with such wires and for shifting them along such wires,'substantially as and for the purpose described.

2. In an ap aratus for illuminating pho-' 'tographic stu ios the combination of a plurality of frames carrying conducting-wires, means for shifting-{such frames independently of each other vertically and horizon-.v

tally, vertical carriers for electric glow-lam s, means for shifting such glow-lam s along 51c said vertical carriers, and means or supporting such carriers on. such conducting-Wires,v

and supporting wires 0 'lam s in suchreflector, the said slot extendand shifting them along such wires, substantially as and for the pur ose described.

3. In an ap aratus or illuminating pho tographic stu ios the combination of a plu-q rality of frames carrying conducting-wires 7 means for shifting such frames independently of each other vertically'and horizontally, meansgfoi' supporting electric gloW- .lam'ps on such conducting-wires for electrically connecting them with such wires and for I electrically connecting them with such wires shifting them along such wires, reflectors adapted to receive one :or moreof the said electric glow-lamps, a slot in each of such reflectors through which fpass current-supply ing rom the summit of such reflector along a meridian of the same substantially as and for the purposedescribed;

the glow lamp or,

In testimony whereof afiix my signature in presence of two witnesses. v y

' PHILIPP GEORG v.1). LIPPE:

Witnesses:

ARTHUR BAUMANN, ALVESTO S. Hoeun

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