US1255344A - Lighting apparatus for motion-picture machines. - Google Patents

Lighting apparatus for motion-picture machines. Download PDF

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Publication number
US1255344A
US1255344A US77941913A US1913779419A US1255344A US 1255344 A US1255344 A US 1255344A US 77941913 A US77941913 A US 77941913A US 1913779419 A US1913779419 A US 1913779419A US 1255344 A US1255344 A US 1255344A
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motion
condensers
lighting apparatus
picture machines
light
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US77941913A
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Michael Segel
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses

Definitions

  • This invention relates to an improvement in lighting apparatus for motion picture machines particularly.
  • My invention appertains more particularly to arc lights used to cast motion pictures upon a screen Vand has for an object an improved condenser.
  • @ne of the chief objects of my invention is to provide a plurality of condenscrs which can be moved in position between the arc light and motion picture device.
  • Figure 1 is a sectional side elevation of an entire lighting system embodying my improvement in condensers.
  • Fig. 2 is a front View showing the condensers in position with the one reserve condenser carried in readiness to be slid into position as soon as the one in use has become injured.
  • the numeral l indicates the usual shutter which is located between the condensers 2 and 3, which are as usual made of glass.
  • each pair of condensers is carried in an independent frame which frames are slidable in a support 6.
  • the object of providing a plurality of sets of condensers is to enable the operator to immediately slide in a new set of condcnsers should those in use break.
  • a casing having a guideway and a frame carrying a plurality of sets of condensers mounted on said casing and adapted for movement in said guidewa'y to position, successive sets of condensers in front of the light course.
  • a projecting apparatus having a source of light, a guideway, a plurality of sets of condensers mounted in said guideway near said light source, and adapted to be moved in and out of focal axis of the light source, whereby the sets of condensers in front of the arc can be removed by moving the successive sets in front of the light t0 source'.
  • tomen et thm patent may 'be obtained for ave cents each, by addressing the commissioner et Patente, ashington, JD..

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

IVI. SEGEL.
LIGHTING APPARATUS FOR MOTION PICTURE MACHINES.
APPLICATION man 1uLY11.1913.4
Patented. Feb. 5, 1918.
MICHAEL SEGEL, OF NEW YORK, N. Y.
LIGHTING APPYARATUS FOB MOTION-PICTURE MACHINES.
Specication of Letters Patent.'
patented nen. a, iai...
Application iled .Tilly 17, 1913. Serial No. 779,419.
T all whom it may concern B e it known that I, MICHAEL SEGEL, a citizen of the United States, residing at New York county, city and State of New York, have invented certain new and useful Improvements in Lighting Apparatus for Motion-Picture Machines, of which the followf ing is a clear, Jfull, and exact description.
This invention relates to an improvement in lighting apparatus for motion picture machines particularly. My invention appertains more particularly to arc lights used to cast motion pictures upon a screen Vand has for an object an improved condenser.
@ne of the chief objects of my invention is to provide a plurality of condenscrs which can be moved in position between the arc light and motion picture device.
Figure 1 is a sectional side elevation of an entire lighting system embodying my improvement in condensers.
Fig. 2 is a front View showing the condensers in position with the one reserve condenser carried in readiness to be slid into position as soon as the one in use has become injured.
In the drawings the numeral l indicates the usual shutter which is located between the condensers 2 and 3, which are as usual made of glass.
As c an be seen in Fig. 1 the condensers are carried in a frame 4 and 5, that is to say, each pair of condensers is carried in an independent frame which frames are slidable in a support 6.
The object of providing a plurality of sets of condensers is to enable the operator to immediately slide in a new set of condcnsers should those in use break.
I claim as my invention: tu
1. In a projecting apparatus having a plurality of sets of condensers'mounted in a. casing movable in a guideway whereby when one condenser is moved into the line oi light, the other condenser is moved out ofthe line tu of light.
2. In a projecting apparatus, a casing having a guideway and a frame carrying a plurality of sets of condensers mounted on said casing and adapted for movement in said guidewa'y to position, successive sets of condensers in front of the light course.
3. In a projecting apparatus having a source of light, a guideway, a plurality of sets of condensers mounted in said guideway near said light source, and adapted to be moved in and out of focal axis of the light source, whereby the sets of condensers in front of the arc can be removed by moving the successive sets in front of the light t0 source'. v
Signed at New York city, New York, this 12th day of July 1913.
Witnesses:
HARRIS B. loTHKownz, H. MEBELMENTS.
tomen et thm patent may 'be obtained for ave cents each, by addressing the commissioner et Patente, ashington, JD..
US77941913A 1913-07-17 1913-07-17 Lighting apparatus for motion-picture machines. Expired - Lifetime US1255344A (en)

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US77941913A US1255344A (en) 1913-07-17 1913-07-17 Lighting apparatus for motion-picture machines.

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US77941913A US1255344A (en) 1913-07-17 1913-07-17 Lighting apparatus for motion-picture machines.

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US1255344A true US1255344A (en) 1918-02-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773417A (en) * 1953-08-06 1956-12-11 Zeiss Ikon Ag Motion picture projector housing and light condensing means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773417A (en) * 1953-08-06 1956-12-11 Zeiss Ikon Ag Motion picture projector housing and light condensing means

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