US944749A - Safety shutter device for moving-picture apparatus. - Google Patents

Safety shutter device for moving-picture apparatus. Download PDF

Info

Publication number
US944749A
US944749A US50589209A US1909505892A US944749A US 944749 A US944749 A US 944749A US 50589209 A US50589209 A US 50589209A US 1909505892 A US1909505892 A US 1909505892A US 944749 A US944749 A US 944749A
Authority
US
United States
Prior art keywords
light
film
moving
shutter
rays
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US50589209A
Inventor
Charles M Stanley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US50589209A priority Critical patent/US944749A/en
Application granted granted Critical
Publication of US944749A publication Critical patent/US944749A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/18Fire preventing or extinguishing

Definitions

  • Safety Shutter Devices for ignition of the inflammable films consisting in passing over and in contact with the film at the area exposed to the light and accompanying heat. rays, a current of air, to modify and reduce the effects of heat upon the. film.
  • My present invention is supplemental to said former invention and. is intended to meet certain conditions or exigencies of use, and protect the film, where for any reason the protecting air current may fail to operate.
  • an opaque shutter adapted to be interposed in and across the path of the light and heat rays to the film, whenever the protecting air current ceases to operate, and to be withdrawn from said pathv Whenever the current becomes again operative.
  • the invention thus supplements my former one referred to, and completes the protection intended, by making it impossible to use or continue 'the use of the light for its intended purpose when the protecting air current is for any reason stopped, or so reduced in force as to be insufficient to hold up-the shutter.
  • the mechanism is so constructed that, whatever the position of the parts both in use and disuse, the film is effectually screened from the light 'andheat of the lamp by the interposed shutter.
  • Figure 1 is a general side elevation of a common form of moving-picture apparatus employing a continuous film, equipped with my safety devices hereinafter described; and Fig. 2 is a detail (enlarged) of the pivscription.
  • Fig. 3 IS a Slmllfll" etail, showing the pivotedshutter thrown back when out of use, in position to still cover the path of rays passing outward from the lamp.
  • Av designates the lamp chamber, a the lens frame, 0 the hellowsextension of the light channel, and a a further extension of the light chan nel in the form of a somewhat funnel-shaped mouth-piece. All these parts, together with their supporting parts and adjusting devices, ete, constitute the light-projecting apparatus as usually constructed and used.
  • I employ a tan or blower S which may be driven by an electric motor 0, and connected by an air-delivery tube 01 to a delivery nozzle d T he tube is preferably connected to the nozzle by a swivel pipe-joint d located upon the stand S between the light mouth-piece a and the film stand B in such relation to the film at its point of crossing the path of the light rays as to discharge upward upon the face of the film.
  • the air-discharge nozzle d is secured a'rectangular frame 6 at such an angle as that when the parts are in operative position, the frame a rests upright against the contiguous face of the lightopenin of the stand B.
  • a short auxiliary nozzle (Z) is provided, leading vertically upward out of the nozzle (l to direct a small current of air directly upward against the flap 6 when in the horizontal position shown, and maintain it in such pos1tion;the flap being con,- structed of light-weight material or suitably counterbalanced to facilitate this result.
  • the flap or shutter 0 will at once drop to a vertical position across the path of light and etfectually screen and protect the film.
  • the function of the swivel oint d is to permit the nozzle d to be swung back, when out of use (as when the film is being changed), to the position indicated in dotted lines in Fig. 1, and in full lines in Fig.
  • an opaque shutter secured in proximity to the ath of light and arranged to automatical y cross the same and intercept the light rays when the means to prevent overheating of the film, cease to operate, but remain out of the path of the light rays when said means are operating.
  • an air nozzle and a pivoted shutter mediately attached thereto said nozzle adjustable to hold the screen across the opening of the film-feeding apparatus, or across the opening of the light projecting apparatus as desired.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)

Description

APPLICATION FILED JULYS,1909.
Patented Dec. 28, 1909.
.INVENTOR.
Wald
ink
UNITED srnrns PATENT OFFlCE.
CHARLES M. STANLEY, or HAMILTON, oHIo.
SAFETY SHUTTER DEVICE FOR MOVING-PICTURE APPARATUS.
i Specification of Letters .Iatent.
Patented Dec. 28, 1909.
ppl'leation filed July 3, 1909. Serial No. 505,892.
To all whom it may concern:
Be it known that LQHARLES M. STANLEY, a citizen of the United States, residing at Hamilton, in the county of Butler and State ofOhio, have invented new and useful lmprovementsin. Safety Shutter Devices for ignition of the inflammable films, consisting in passing over and in contact with the film at the area exposed to the light and accompanying heat. rays, a current of air, to modify and reduce the effects of heat upon the. film.
My present invention is supplemental to said former invention and. is intended to meet certain conditions or exigencies of use, and protect the film, where for any reason the protecting air current may fail to operate.
To this end it consists in the provision and use of an opaque shutter, adapted to be interposed in and across the path of the light and heat rays to the film, whenever the protecting air current ceases to operate, and to be withdrawn from said pathv Whenever the current becomes again operative. The invention thus supplements my former one referred to, and completes the protection intended, by making it impossible to use or continue 'the use of the light for its intended purpose when the protecting air current is for any reason stopped, or so reduced in force as to be insufficient to hold up-the shutter. The mechanism is so constructed that, whatever the position of the parts both in use and disuse, the film is effectually screened from the light 'andheat of the lamp by the interposed shutter.
Mechanism embodying and illustrating my invention is shown in the drawings accompanying and forming part of this specification, in which drawings:
Figure 1 is a general side elevation of a common form of moving-picture apparatus employing a continuous film, equipped with my safety devices hereinafter described; and Fig. 2 is a detail (enlarged) of the pivscription.
oted shutter or screen, showing more clearly its relation to the air-nozzle and the aircurrent passin from the same; and Fig. 3 IS a Slmllfll" etail, showing the pivotedshutter thrown back when out of use, in position to still cover the path of rays passing outward from the lamp.
Referring now to the drawings, Av designates the lamp chamber, a the lens frame, 0 the hellowsextension of the light channel, and a a further extension of the light chan nel in the form of a somewhat funnel-shaped mouth-piece. All these parts, together with their supporting parts and adjusting devices, ete, constitute the light-projecting apparatus as usually constructed and used.
'13 designates the supporting stand for the feed-mechanism or: the film stri) Fwhich mechanism is not shown, excepting to indicate the relative positions of the feed rolls 5)" 52 5 6 lenscjfinder 5 and storage reels if, 5 ,the whole constituting, the apparatus generally employed, in connection with. the
. light chamherA and its adjuncts, in projecting theconcentrated rays of light from a source of light within the chamber A. through the channels indicated, and the final cylinder (7 to a screen {not shown) on which.- the photographs upon the film F are thrown and exhibit-ed. All these are mounted on a stand S, form no partof my present invention, and require no further illustration or dein connection with these, I employ a tan or blower S which may be driven by an electric motor 0, and connected by an air-delivery tube 01 to a delivery nozzle d T he tube is preferably connected to the nozzle by a swivel pipe-joint d located upon the stand S between the light mouth-piece a and the film stand B in such relation to the film at its point of crossing the path of the light rays as to discharge upward upon the face of the film.
To the outer endor" the air-discharge nozzle d is secured a'rectangular frame 6 at such an angle as that when the parts are in operative position, the frame a rests upright against the contiguous face of the lightopenin of the stand B. To the upper part above the path of the light rays when the apparatus is in use,'as shown in Fig. 1. To secure this result, a short auxiliary nozzle (Z is provided, leading vertically upward out of the nozzle (l to direct a small current of air directly upward against the flap 6 when in the horizontal position shown, and maintain it in such pos1tion;the flap being con,- structed of light-weight material or suitably counterbalanced to facilitate this result. As will bereadily inferred, should the air current cease to flow, or become too weak, the flap or shutter 0 will at once drop to a vertical position across the path of light and etfectually screen and protect the film.
By way of further precaution against forgetfulness of the operator, and to insure a proper disposition of the screen in operating the picture mechanism, it may now be explained that the function of the swivel oint d is to permit the nozzle d to be swung back, when out of use (as when the film is being changed), to the position indicated in dotted lines in Fig. 1, and in full lines in Fig. 3, against the rear face of the bellowsextension a the mouth piece a being swung aside on its pivoted holding arm a for this purpose.- The frame 6 in this position of the parts leans against the face of the bellows extension, and the .flap or shutter e -hangs down across the light'opening, thus rendering it impossible to work the apparatus until the arts are properly re-adjusted as already indicated- I claim as my invention and desire to secure by Letters Patent of the United States:
1. The combination, with light-projecting apparatus of the character indicated, of
means to prevent over-heating of the film, and an opaque shutter secured in proximity to the ath of light and arranged to automatical y cross the same and intercept the light rays when the means to prevent overheating of the film, cease to operate, but remain out of the path of the light rays when said means are operating.
2. In combination with picture apparatus ofthe character indicated, means for projecting a current of air in contact with the film interposed between the source of light and heat rays and the film, and across the area exposed to light and heat rays, and an opaque shutter adapted, when the air current is operating, to be held out of the path of said rays, but upon cessation or diminution of the air current to drop into a position across the path of said rays.
' 3'. In combination with picture apparatus of the character indicated, means for producing an air current, an adjustable delivery nozzle attached thereto, and a pivoted shutter mediately connected to said nozzle and adapted to hang normally across the path of the light, but be held out of the path of light by the air current when the latter is in operation.
4. In combination with picture apparatus of. the character indicated, an air nozzle and a pivoted shutter mediately attached thereto, said nozzle adjustable to hold the screen across the opening of the film-feeding apparatus, or across the opening of the light projecting apparatus as desired.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
CHARLES M. STANLEY. Witnesses LEWIS M. HOSEA, 'WALT R A. KNIGHT.
US50589209A 1909-07-03 1909-07-03 Safety shutter device for moving-picture apparatus. Expired - Lifetime US944749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US50589209A US944749A (en) 1909-07-03 1909-07-03 Safety shutter device for moving-picture apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50589209A US944749A (en) 1909-07-03 1909-07-03 Safety shutter device for moving-picture apparatus.

Publications (1)

Publication Number Publication Date
US944749A true US944749A (en) 1909-12-28

Family

ID=3013171

Family Applications (1)

Application Number Title Priority Date Filing Date
US50589209A Expired - Lifetime US944749A (en) 1909-07-03 1909-07-03 Safety shutter device for moving-picture apparatus.

Country Status (1)

Country Link
US (1) US944749A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441313A (en) * 1946-03-09 1948-05-11 Mitchell Camera Corp Heat screen control for motion picture projectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441313A (en) * 1946-03-09 1948-05-11 Mitchell Camera Corp Heat screen control for motion picture projectors

Similar Documents

Publication Publication Date Title
US944749A (en) Safety shutter device for moving-picture apparatus.
JP2018200490A5 (en)
US2369248A (en) Reading and projection apparatus
US1479630A (en) Cooling motion-picture projectors and films
US1281970A (en) Motion-picture machine.
US1101414A (en) Spot-light attachment.
US1937379A (en) High intensity multiple arc projection lamp machine
US2461140A (en) Double shutter heat protection for motion-picture projectors
US2350761A (en) Safety shutter for projectors
US785205A (en) Flame-shield for kinetoscopes.
US864418A (en) Projection apparatus.
US1225636A (en) Motion-picture machine.
US1341492A (en) Electric machine
US1684304A (en) Cooling and fire-prevention apparatus for motion-picture projectors
US1507360A (en) Refrigerating means for cinematographic apparatus
US947256A (en) Reflector for moving-picture machines.
US2328616A (en) Projecting device
US1753647A (en) Framing-light mechanism
US652156A (en) Gas photographing apparatus.
US1031879A (en) Picture-machine.
US1096284A (en) Optical instrument.
USRE12853E (en) Safety
US1229908A (en) Projecting apparatus.
US863035A (en) Device for maintaining instruments in adjusted positions.
US1126902A (en) Safety apparatus for moving-picture machines.