US3596581A - Photographic apparatus for firing percussion-ignitable flash lamps - Google Patents

Photographic apparatus for firing percussion-ignitable flash lamps Download PDF

Info

Publication number
US3596581A
US3596581A US766751A US3596581DA US3596581A US 3596581 A US3596581 A US 3596581A US 766751 A US766751 A US 766751A US 3596581D A US3596581D A US 3596581DA US 3596581 A US3596581 A US 3596581A
Authority
US
United States
Prior art keywords
striker
percussion
unit
camera
preenergized
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
US766751A
Other languages
English (en)
Inventor
Joseph V Poweska
Jeffrey R Stoneham
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of US3596581A publication Critical patent/US3596581A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0478—Combinations of photographic apparatus with percussion type flash ignition systems
    • G03B15/0489—Means for ignition by percussion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K5/00—Light sources using charges of combustible material, e.g. illuminating flash devices
    • F21K5/02—Light sources using charges of combustible material, e.g. illuminating flash devices ignited in a non-disrupting container, e.g. photo-flash bulb
    • F21K5/023—Ignition devices in photo flash bulbs
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/041—Separatable flash apparatus; Means for mounting the flash apparatus on the photographic apparatus
    • G03B15/0431—Rotatable mounting means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0478—Combinations of photographic apparatus with percussion type flash ignition systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0478—Combinations of photographic apparatus with percussion type flash ignition systems
    • G03B15/0484—Constructional details of the flash apparatus

Definitions

  • the flashlamps each include a striker element releasably retained in a preenergized position and mounted for selective release at individual access sites on the unit.
  • the apparatus is adapted to cooperate with such units through the access sites to effect selective release of individual striker elements in synchronization with picture-taking operations.
  • FIG. 1 A first figure.
  • FIG-6 ATTORNEYS Pmminm am 3.596.581
  • the present invention relates to flash photography' and more particularly to apparatus using percussion-activatable flash units having preenergized striking elements.
  • percussion-ignitable photoflash lamps have. recently been developed for use with photographic apparatus.
  • Such percussion-ignitable photoflash units employ lamps having an envelope containing a combustible material such as shredded zirconium foil and a combustion-supporting gas such as oxygen, sealed in the envelope at' a pressure of several atmospheres.
  • a percussion-activatable ignition tube is provided at the bottom end of such lamps, with the top'of the ignition tube opening into the lamp envelope and the bottom end of the tube closed and extending outside the envelope to a location suitable for percussion striking.
  • the ignition tube contains an anvil rod coated with percussion-ignitable material such as a mixture of zirconium and fulminate; and, upon striking the tube the material is activated and ignites the combustibles in the envelope through the open end of the ignition 7 tube.
  • the present invention provides an improved photographic apparatus which can be used to actuate ignition of flash units including percussion-ignitable flashlamps and having preener- 1 gized strikers that can be positively contacted and dislodged from a stationary retaining protrusion on the unit base.
  • This A further important object of the present invention is to I feature of the present invention eliminates the necessity for a releasing latch member in the unit and thereby permits a simplified construction and reduces the likelihood of accidental firings.
  • Another feature of the present invention provides an improved photographic flash apparatus in which an actuating mechanism cooperates directly with a preenergized torsional striker of a detachably mounted percussion-ignitable flash unit to effect striker release thus enabling the application of torsional forces to effect percussive firing.
  • Still another object of the present invention is to provide apparatus for use with contact-actuating preenergized striker elements of a percussion-ignitable photoflash unit.
  • bination employing pr energized. percussion-ignitable, photoflash units.
  • FIG. I is a perspective view, with portions removed for illustration, of one embodiment of multilamp flash unit mounted on photographic apparatus in accordance with the present invention
  • FIG. la is a partial section of the flash unit in FIG. I, as indicated, showing a manner of mounting the preenergized striker elements of that unit;
  • FIG. 1b is a partial section similar to FIG. la but showing an alternative manner of mounting the preenergized striker elements in that unit;
  • FIG. 2 is a perspective view of a multilamp flash unit with portions removed for illustration and showing another embodiment for use with the present invention
  • FIG. 3 is a perspective view of a multilamp flash unit with portions removed for illustration and showing yet another embodiment for use with the present invention
  • FIG. 4 is an enlarged top view of the flash unit shown in FIG. 1 having parts omitted for purpose of illustration;
  • FIG. 4a shows the unstressed configuration of the springs shown in FIG. 5;
  • FIG. 5 is a sectional view taken along the lines 5-5 in FIG. 4;
  • FIG. 6 is a fragmentary view of a portion of the unit shown in FIG. 5 but showing the striker element in its released position;
  • FIG. 7 is a perspective view of a camera showing one embodiment of actuating structure of the present invention, portions of the camera housing being removed and parts omitted for purpose of illustration; 7
  • FIG. 8 is a perspective view of the actuating elements shown in FIG. 7 when in a cocked position.
  • FIGS. 8a and 8b disclose a modification of the retaining element of the flash unit and actuating member of the apparatus of the present invention
  • FIG. 9 is a top sectional view of a portion of the camera shown in FIG. 7 showing the socket-rotating mechanism of the camera.
  • FIG. 1 a multilamp flash unit I constructed in accordance with one embodiment for use with the present invention is shown detachably mounted on a photographic apparatus 2, in this instance a camera.
  • a photographic apparatus 2 in this instance a camera.
  • the present description will be directed to particular elements of such cameras which form a part of or cooperate more directly with the present invention, elements not specifically shown or described herein being understood to be selectable from those known in the art.
  • each of flash unit embodimentsl, II and III include a plurality of percussionignitable flash lamps 3 which are mounted with their individual reflectors 4 around the central axis of a base 5 to form an assemblage which is generally cubic in configuration.
  • the base 5 suitably can be formed of molded plastic.
  • each of the flash units shown in FIGS. l3 have a downwardly extending hollow post 6 adapted to be mounted in a socket on the camera 2 in a known manner.
  • the upright walls 7 of the unit are transparent and a top 8 is provided to complete the package enclosure.
  • the flashlamp 3 of the units I, and III are similar'to the type disclosed in U.S. Pat. application Ser. No. 765,930, entitled Multilamp'Flash Unit, flled Oct. 8, 1968, in the name of David E. Beach in that the units are provided with a hollow igunder stress so that'the spring is in nition tube 9 which opens on its top into the flashlamp envelope.
  • These tubes can contain an anvil rod coated with a primer charge such as a composition of zirconium and fulminate like the ignition tubes in the above-mentioned Beach application, or can contain other percussive-activatable charges such as are known in the art.
  • the ignition tubes 9, in these units need not extend outside the container because of the novel preenergized striking device provided in accordance with the present invention.
  • the particular flash unit embodiment l for use with the present invention will be described in more detail. It can be seen that the strikers 10 of this embodiment are in the form of a unitary spring member.
  • the flash unit I utilizes two of the spring elements 10 so that with two striker portions 12 on each spring 10, each of the four flash lamps 3 is provided with an individual striker element 12.
  • the spring members 10 are mounted with the inverted U-shaped portions thereof in diagonally opposite comers of the unit and extending generally normally upward from the base 5.
  • the U-shaped members can be supported with respect to the unit by a hollow sleeve 13 as shown in FIGS. 1 and 1a or, alternatively, clamped rigidly at their top to the unit by web 13' as shown in FIG. lb, in a manner which substantially prevents transmission of torsional stress between the legs of the U member I l.
  • each spring 10 The striking portions 12 of each spring 10 are generally perpendicular to the upright portions 11 so as to extend generally parallel with respect to the interior of base 5.
  • the spring 10 is formed so that the striker portions 12, in their unstressed condition, are generally parallel and formed as extensions of the upright portion, bent'90.
  • the unstressed configuration of a spring 10 can be seen in FIG. 40; however, the construction of the springs unstressed configuration can vary in accordance with characteristics of the material used and the energy desired for percussion.
  • the bottom ends of ignition tubes 9 can be embedded in the base to obtain rigid support and a backup ring 50 can be molded in the base to further support the tubes during percussion.
  • the base 5 is provided with upwardly extendingposts or stops 14 which provide means for dislodgeably restraining the free ends of striker portions 12 a condition which is herein termed preenergized.
  • the force urging the strikers 12 towards ignition tubes 9 include a large torsional restoring force resulting from the twisting of the upright portion 11.
  • the torsional forces acting to restore the strikers are derived from both legs of the upright portion 12.
  • the top of striker is clamped by web 13 as shown in FIG. lb
  • the torsional restoring force for any one striker is derived substantially from only one leg of the upright portions 11 of springs 10.
  • the base 5 also includes four openings 15 to the exterior of the flash unit I.
  • the openings 15 are in the illustrated embodiment located intermediate the posts and mounted upright portions 11 of the spring 10 and beneath the striker portions 12 when in their preenergized positions shown in FIGS. 1 and 5.
  • the free ends of striker portions 12 can be formed to extend beyond posts 14 and under free ends the preenergized springs 12.
  • FIGS. 4-6 it can be seen that when an actuating member such as 72 is moved upwardly from the exterior of the flash unit l through one of the access sites defined by openings 15, the striker portion 12 associated with that opening will be moved upward to a position in which is no longer restrained by stop 14 and is free to be moved by the restoring forces of spring 10 into percussion contact with the ignition tube 9 located in its firing path.
  • an actuating member such as 72 is moved upwardly from the exterior of the flash unit l through one of the access sites defined by openings 15
  • the striker portion 12 associated with that opening will be moved upward to a position in which is no longer restrained by stop 14 and is free to be moved by the restoring forces of spring 10 into percussion contact with the ignition tube 9 located in its firing path.
  • the posts 14 can be slightly ramped over the pins or that the striker portions 12 .can be weakly secured to the posts as by embedding the wire ends partially in the posts 14 or base 5.
  • the spring 10 can be formed so that the mounted striker portions 12 have a slight downward bias against the base 5 to further prevent accidental firings.
  • the wire strikers 20 are formed as cantilever'springs with fixed ends 21 embedded in the base 5 and free ends 22 dislodgeably restrained by posts 23.
  • a plurality of openings 24 provide access for an actuating member to dislodge the strikers 20 from posts 23 inthe manner described with respect to FIG. 1.
  • each striker portion 32 is provided with an individual inverted U-shaped member; and the four inverted-U members of the unit III are mounted in the center of the flash unit by a sleeve 33.
  • the sleeve 33 can be secured to the top of the flash unit III.
  • restraining posts 34 and access openings 35 are provided so that actuation of ignition tubes 9 can be effected in the same'manner described elements be protected by structure of the unit in such a' fashion that accidental firing is not likely.
  • the present invention can be utilized with flash units having any number of flashlamps in that a corresponding number of contact-dislodgeable, preenergized striker elements can be provided for any number of flashlamps in the unit.
  • FIGS. 7-9 one embodiment of photographic apparatus which, according to the present invention, is provided for selectively moving into dislodging contact with preenergized striker elements in a flash unit such as that in FIGS. 1-5, will be described.
  • the camera 40 comprises an exterior housing 41 and an interior frame 42 on which various operating elements of the camera are mounted.
  • a socket 43 of a known type adapted to detachably receive and support a flashunit with a base 5 such as is shown in FIG. 5, is provided in an opening on the top of housing 41.
  • the camera 40 has a film advance wheel 45 with an operating lever 46, the wheel 46 being connected to a film drive shaft 47 which successively advances photographic film inserted in the camera in a known manner.
  • the wheel 45 also has a lug 48 formed on its periphery, the purpose of which will be subsequently described.
  • a shutter release lever 50 is slidably mounted on pins 51 for movement in a vertical direction and is urged upwardly by shutter release spring 52.
  • the shutter release lever includes an operating top 55 and has extending horizontally therefrom a retaining arm 53 which terminates in a shutter release latch 54.
  • a shutter driver 60 is mounted in the camera on suitable means (not shown) for rotation on pin 61 in operative association with the shutter release latch 54 and the camera shutter (not shown).
  • the shutter driver is biased by shutter drive spring 62 for rotation in a counterclockwise direction as viewed from the top in FIG. 7 and includes a cocking arm 63, shutter-actuating arm 64 and retaining arm 65 which will be further described hereafter.
  • An actuating plunger 70 is slidably mounted in a bore in the frame 42 of the camera and urged upwardly by an actuating spring 71 so that, when released from its cocked position, an actuating pin 72 on the upper end of plunger 70 will pass through an actuating opening 73 in the camera top.
  • the actuating opening 73 and plunger 70 are aligned with respect to socket 43 so that the access opening 14 associated with a forwardly facing lamp 3 of a percussion-ignitable unit such as disclosed in FIG. 1, will be aligned with these elements when in the socket 43.
  • the actuating plunger 70 has a cocking pin 76 and a retaining notch 75 formed on the bottom end thereof at a location for cocked engagement by retaining arm 65 of shutter driver 60.
  • a cocking slider 80 is mounted for horizontal movement in the camera by means not shown and has an opening 81 engaged by lug 48 of film advance wheel 45.
  • the slider 80 includes a shutter driver cocking arm 82 and a ramped end 83 adapted to contact cocking pin 76 and move plunger 70 downwardly against spring 71.
  • FIG. 7 the parts of the camera are shown during a picture-taking operation with shutter release lever 50 partially depressed; whereas in FIG. 8 the parts are shown in a cocked position after film wind and ready for a picture-taking operation.
  • FIGS. 7 and 8 it can be seen that when the camera is in the ready condition shown in FIG. 8 and shutter release lever 50 is depressed, the shutter release latch 54 releases shutter driver 60 so that arm 64 can move counterclockwise to actuate the camera shutter (not shown) in a known manner.
  • This movement of the released shutter driver 60 also causes retaining arm 65 to release actuating plunger 70 so that the actuating pin 72 is moved upwardly through the actuating opening 73 and into the aligned access opening 14 of an inserted flash unit I.
  • This action releases the individual spring 12 which is associated with the forwardly facing flashlamp 3 and provides photoflash in synchronization with the camera shutter.
  • the film advance wheel 45 is rotated counterclockwise causing slider 80 to move right to the position indicated by the dotted lines in FIG. 8.
  • Rightward movement of the slider 80 causes ramped end 83 of the slider to contact pin 76 and move the actuator plunger 70 downward.
  • the shutter driver cocking arm 82 engages and moves the shutter driver clockwise against spring 62 and over shutter release latch 54 to its cocked position.
  • the final stages of clockwise rotation of the shutter driver 60 causes its retaining arm 65 to move into notch 75 of the lowered plunger 70 thereby retaining the plunger in the cocked position.
  • the rotating arm has a claw 8 formed on its forward end that is adapted to engage ears 91 which are formed on the lower portion of socket 43.
  • the slider first cocks plunger 70 thereby withdrawing the pin 72 from an inserted flash unit and moves rotating arm into contact with an ear 91 on socket 43 as indicated by the dotted position a in FIG. 9. Further movement of the slider to dotted position 6 effects rotation of the socket 43 with the pin 72 out of an interfering position.
  • the socket is indexed and held in the advanced position by engagement with a spring-loaded detent 92 in notches 93 of the socket 43.
  • the actuating plunger of the present invention can be provided with a beveled or ramped actuating surface which contacts and cooperates with the striker element to move the striker back slightly in a direction further stressing the spring.
  • Such structure is useful in order to clear the striker of overlying retaining structure which can be provided on the restraining posts for safety, such as for example, the ramped surface described above.
  • Such a modified plunger 70 with a ramped surface 72a cooperable with a striker element S and restraining lug L of a flash unit can be seen in FIGS. 8a and 8b.
  • an actuating member movable in a first direction and from a first position to a second position to engage and dislodge the preenergized striker from the abutment;

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Stroboscope Apparatuses (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Accessories Of Cameras (AREA)
US766751A 1968-10-11 1968-10-11 Photographic apparatus for firing percussion-ignitable flash lamps Expired - Lifetime US3596581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76675168A 1968-10-11 1968-10-11

Publications (1)

Publication Number Publication Date
US3596581A true US3596581A (en) 1971-08-03

Family

ID=25077422

Family Applications (1)

Application Number Title Priority Date Filing Date
US766751A Expired - Lifetime US3596581A (en) 1968-10-11 1968-10-11 Photographic apparatus for firing percussion-ignitable flash lamps

Country Status (6)

Country Link
US (1) US3596581A (de)
DE (2) DE6939550U (de)
FR (1) FR2023315A1 (de)
GB (1) GB1257845A (de)
NL (1) NL166551C (de)
ZA (1) ZA697121B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737643A (en) * 1970-08-05 1973-06-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Multiflash device, particularly flashcube, with mechanical striking mechanism
US3769501A (en) * 1973-01-02 1973-10-30 Gte Sylvania Inc Selective actuating mechanism for percussive photoflash lamp array
US3783260A (en) * 1972-06-06 1974-01-01 Gte Sylvania Inc Selective actuating mechanism for percussive photoflash lamp array

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US744540A (en) * 1903-03-04 1903-11-17 John H Hammer Flash-light attachment for cameras.
US952394A (en) * 1909-02-06 1910-03-15 Harry A Whitfield Flash-light.
US970358A (en) * 1910-03-07 1910-09-13 David C Shoberg Flash-light apparatus.
US1814299A (en) * 1929-10-03 1931-07-14 Burke & James Inc Flash lamp
US1853172A (en) * 1930-10-21 1932-04-12 Neuwirth Herman Flash gun
US2006171A (en) * 1932-02-25 1935-06-25 Kalhaus Ernst Lighting apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US744540A (en) * 1903-03-04 1903-11-17 John H Hammer Flash-light attachment for cameras.
US952394A (en) * 1909-02-06 1910-03-15 Harry A Whitfield Flash-light.
US970358A (en) * 1910-03-07 1910-09-13 David C Shoberg Flash-light apparatus.
US1814299A (en) * 1929-10-03 1931-07-14 Burke & James Inc Flash lamp
US1853172A (en) * 1930-10-21 1932-04-12 Neuwirth Herman Flash gun
US2006171A (en) * 1932-02-25 1935-06-25 Kalhaus Ernst Lighting apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737643A (en) * 1970-08-05 1973-06-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Multiflash device, particularly flashcube, with mechanical striking mechanism
US3783260A (en) * 1972-06-06 1974-01-01 Gte Sylvania Inc Selective actuating mechanism for percussive photoflash lamp array
US3769501A (en) * 1973-01-02 1973-10-30 Gte Sylvania Inc Selective actuating mechanism for percussive photoflash lamp array

Also Published As

Publication number Publication date
ZA697121B (en) 1971-06-30
GB1257845A (de) 1971-12-22
DE6939550U (de) 1970-10-22
DE1951255A1 (de) 1970-08-06
DE1951255C3 (de) 1974-03-14
NL6915276A (de) 1970-04-14
NL166551C (nl) 1981-08-17
DE1951255B2 (de) 1973-08-09
FR2023315A1 (de) 1970-08-21
NL166551B (nl) 1981-03-16

Similar Documents

Publication Publication Date Title
US3576155A (en) Photographic apparatus for use with flash units having individual striker elements
US3576156A (en) Mechanism for actuating ignition of percussion-ignitable flash lamps
US3319548A (en) Multilamp flash photography
US3596581A (en) Photographic apparatus for firing percussion-ignitable flash lamps
US3537367A (en) Photographic apparatus for arming percussion-ignitable flash units
US3727040A (en) Percussive photoflash lamp array
US3753390A (en) Percussive photoflash lamp array with selective actuating mechanism
US3735111A (en) Selective actuating mechanism for percussive photoflash lamp array
US3614413A (en) Percussion activatable flash units having individual striker elements
US3630129A (en) Camera mechanism for actuating mechanically fireable flash
US3672813A (en) Adapter for igniting electrically ignitable flashlamps
US3550514A (en) Adapter for igniting electrically ignitable flash lamps
US3537805A (en) Z-shape striker spring for percussionignitable,multilamp flash units
US3866033A (en) Photoflash assembly with serially advancing percussive lamps
US3661063A (en) Mechanism for sensing the condition of a percussive flash device and for effecting synchronous percussive flash exposures
US3687033A (en) Mechanism for operating a camera shutter and a mechanically operable flash device in synchronism
US3597604A (en) Photographic flashlamp unit
US4096549A (en) Multilamp photoflash assembly
US3584794A (en) Firing mechanism for percussively ignitable flash units
US3780283A (en) Percussion-ignitable flash unit having contact-actuable pre-energized strikers and photographic apparatus using such units
US3646864A (en) Flashlamp-sensing and percussive-firing mechanism for photographic apparatus
US3544250A (en) Firing mechanism for percussion-ignitable flash lamps
US3584555A (en) Firing and shutter synchronization for use with percussive photoflash system
US3552287A (en) Photoflash lamp firing mechanism
US3584554A (en) Apparatus for actuating firing of percussion-ignitable flaslamps and operating mechanism therefor