US3612849A - Multilamp flash unit - Google Patents

Multilamp flash unit Download PDF

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Publication number
US3612849A
US3612849A US765930A US3612849DA US3612849A US 3612849 A US3612849 A US 3612849A US 765930 A US765930 A US 765930A US 3612849D A US3612849D A US 3612849DA US 3612849 A US3612849 A US 3612849A
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US
United States
Prior art keywords
socket
flash unit
unit
post
webs
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
US765930A
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English (en)
Inventor
David Beach
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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Filing date
Publication date
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
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Publication of US3612849A publication Critical patent/US3612849A/en
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    • 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
    • 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

Definitions

  • ABSTRACT A multilamp unit of flashlamps of the type which are percussion-firable by striking an ignition tube of individual lamps.
  • the unit includes a novel base which is adapted to be received in appropriate structure on photographic apparatus and which will rigidly support the ignition tubes of the flash unit for percussion yet maintains a large striking zone in which ng tube.
  • the present invention relates to flash photography and more particularly to disposable multilamp photoflash units for use with a camera or other photographic apparatus adapted to support operably and ignite such units.
  • a second problem presented with respect to the percussiontirable flash units is that the base of the unit should be supported rigidly as described above yet accessible for the primer tubes of the unit to receive a striking blow from a firing mechanism.
  • This problem is amplified by the consideration that a base and cooperating socket should desirably provide a large zone of access to enable percussion by various different striking mechanisms that might be advantageously utilized in different photographic apparatus using the flashlamp unit.
  • the present invention is addressed to the problems pointed out above and provides means for removably mounting a percussion-firable, multilamp, photoflash unit on a photographic apparatus in a manner such that the primer tubes of the unit are held rigidly with respect to the apparatus yet disposed for percussion striking with a large striking zone.
  • Another object of the present invention is to provide a flash unit with an improved base for supporting the nnitrigid with respect to a photographic apparatus yet capable of easy attachment and removal.
  • Another object of the present invention is to provide a flash unit with a base' for rigidly supporting a percussion-tirable flashlamp and for allowing a large field of access for firing percusslon.
  • Still another object of the present invention is to provide a percussion-firable, multilamp, photoflash unit having an inexpensive and readily fabricated base structure for supporting the unit in photographic apparatus for use.”
  • FIG. I is a perspective view of a photographic apparatus and flash unit of the type with which the present invention can be used.
  • FIG. 2 is a perspective view of a flash unit showing one embodiment of the present invention
  • FIG. 2a is a similar view of a socket adapted tobe mounted on apparatus such as in FIG. I and receive the flash unit shown in FIG. 2;
  • FIG. 2b is an enlarged view of a portion of one of the lamps in the flash unit in FIG. 2;
  • FIG. 3 is a bottom view of the flash unit shown in FIG. 2;
  • FIG. 4 is a sectional view of the base of the flash unit shown in FIG. 2 when mounted in the socket shown in FIG. 2a, the section being taken along the line 4-4 indicated in FIG. 1;
  • FIG. 5 is a side view of the base and socket shown in FIG. 4, but taken along the line 5-5 shown in FIG. I;
  • FIG. 6 is a perspective view of another socket adapted to receive a flash unit with the embodiment of the present invention shown in FIG. 2;
  • FIG. 7 is a side view similar to FIG. 5 but showing the flash unit of FIG. 2 inserted in the socket shown in FIG. 6;
  • FIG. 8 is a cross-sectional view of the flash unit of FIG. 2 inserted in the socket of FIG. 6, the section being taken along the line 88 in FIG. 7;
  • FIG. 9 is a perspective view of a flash unit showing another embodiment of the present invention.
  • FIG. 9a is a perspective view of a socket which is adapted to cooperate with the flash unit shown in FIG. 9;
  • FIG. 10 is a cross-sectional view of the flash unit base shown in FIG. 9 inserted in the socket shown in FIG. 9a;
  • FIG. 11 is a perspective view of another socket adapted to cooperate with the flash unit shown in FIG. 9;
  • FIG. 12 is a cross-sectional view similar to FIG. 10, but of the socket in FIG. 11 with the flash unit shown in FIG. 9;
  • FIG. 13 is a perspective view of yet another socket with which the embodiment shown in FIG. 9 can cooperate.
  • FIG. 14 is a cross section of the socket in FIG. 13 with the unit of FIG. 9 inserted therein.
  • a flash unit 10 of the type with which the present invention can be advantageously used is shown schematically, mounted for indexing rotation in a known manner on a photographic apparatus 20, in this instance a still camera.
  • a photographic apparatus 20 in this instance a still camera.
  • the present invention can be used similarly with other photographic apparatus such as camera flash-adapters and auxiliary flash units.
  • the flash unit 10 comprises individual lamps 12 with hollow ignition tubes 11. Each tube I1 is closed at the bottom and opens at the top into the lamp envelop 15.
  • the flash unit When used with such photographic apparatus the flash unit is inserted in a camera socket with the ignition tubes 11 extending to a location opposite a suitable percussion-firing mechanism 21 located adjacent thereto.
  • the firing mechanism can be cocked by movement of a film-advancing lever 22, and released by a shutter release lever 23.
  • the flash unit is rotated and indexed in a known manner about an axis of rotation to present successive unused lamps in alignment with the camera picture-taking axis.
  • FIGS. 25 one specific embodiment of the present invention is shown in conjunction with a novel cooperating socket 30, which socket and the sockets 30', 60, 70 and 80 form a part of the subject matter of my copending U.S. Pat. application Ser. No. 765,931, entitled Socket for Multilamp Flash Unit.
  • an integrally molded base 40 forms a bottom wall 41 of flash unit with the ignition tubes 11 of the individual percussion-firable lamps 12 extending through openings in wall 41 which are formed in base 40 and spaced around the axis of rotation 24 of the flash unit.
  • An open-ended retaining post 43 is comprised of four walls 430 which extend from the central portion of bottom wall 42 in the manner shown in FIGS. 2 and 3 and define a retaining cavity 43b. It will be appreciated that although the disclosed configuration of retaining post is advantageously used in conjunction with other structure hereinafter disclosed, the structure can take otherforms, such as, for example, cylindrical.
  • the base 40 also comprises a plurality of webs 44 extending generally radially outwardly from post 43 towards the ignition tubes 11.
  • the web 44 comprises a narrowed section 45 and an enlarged end portion 46.
  • FIG. 2 it can be seen that only a lower section of the enlarged end portion 46 extends beneath ignition tubes 11 and that the tubes 11 are attached at their bottom ends to portions 46 so that the main body of the tube is spaced outwardly from the remaining portion of webs 44 and retaining post 43 in a location disposed for striking.
  • the walls 43a of retaining post 43 also define retention openings 47 located between each pair of adjacent webs 44.
  • socket 30 is an integral structure comprising a lower portion 31 adapted to be mounted for rotation on an axis 24 in a photographic apparatus, a stabilizing stud 32 extending upwardly from the lower portion on axis 24, a plurality of retaining fingers 33 spaced around the stabilizing stud 32 and a plurality of upright protective and bearing members 34 located radially outwardly from the protective members and spaced so as to define a plurality of open ended slots 36 that are adapted to receive and rigidly support the webs 44 of an inserted flash unit 10.
  • the embodiment of socket 30 shown in FIG. 2a includes a cover flange 37 extending around the socket top and having openings adapted to receive the webs 44 of the flash unit 10.
  • FIG. 4 shows the manner in which the post 43 of the flash unit 40 cooperates with the stabilizing stud 32 of the socket 30. It also can be seen how the openings 47 formed in the walls 43a of post 43 are engaged by ramped retaining fingers 33 of socket 30 and how a portion of the walls defining the openings 47 include a cooperating inclined surface for this purpose.
  • FIG. 5 it can be seen that the upright members 34 of socket 30 and a plurality of socket extensions 38 cooperate with the webs 44 of base 40 to rigidly support the ignition tubes 11 of the flash unit 10.
  • FIGS. 6, 7 and 8 a modification of my novel socket 30' is shown in cooperation with the flash unit having a base 40 such as described above. It will be noted that in this socket embodiment additional bearing surfaces are provided for the enlarged tube-supporting portions 46 of webs 44 by the cups 39 formed on extensions 38'.
  • FIGS. 9, l0, l2 and 14 show another embodiment of the present invention and the manner in which it can be used in cooperation with other socket structure.
  • a flash unit 10' is provided with a different base 50 from that shown in FIG. 2.
  • the base 50 of this embodiment includes a bottom wall 51 with openings 52 and a post 53 defined by members 53a such as in FIG. 2.
  • webs 54 extend from post 53 into attachment with tubes 11 along their entire height from wall 51.
  • the webs 54 of this embodiment are of thickness less than the diameter of ignition tubes II. This construction affords a stable support for the pins while still maintaining a large striking zone for ignition.
  • FIGS. l0, l2 and 14 It can be seen in FIGS. l0, l2 and 14 that the base 50 of unit 10 disclosed in FIG. 9 can cooperate with various embodiments of my novel socket disclosed for illustration in FIGS. 9, l1 and 13.
  • the unit 10' is retained by engagement of fingers in openings 57 of post 53 and the webs 54 are supported in slots 66 by upright protective and bearing members 64.
  • the unit 10' is supported within post 53 by stud 72 of socket 70 with webs 54 supported within slots by bearing members 74.
  • the unit 10' is supported within post 53 by stud 82 of socket 80 shown in FIG. 13 and by cups 89 formed on the end of extensions 88 of that socket. It can be seen that in this embodiment the openings 57 are utilized by fingers 83 of the socket.
  • a photoflash unit of the type having a plurality of percussion-firable lamps and individual lamp reflectors arranged around a central axis and having a bottom wall through which the primer tube of each lamp extends, the improvement comprising:
  • retaining post defining a longitudinal central cavity adapted to receive a stabilizing stud, and a plurality of retaining depressions extending from the outer periphery of said post toward said central cavity, each of said depressions being spaced around the outer periphery of said post between an adjacent pair of said webs.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Golf Clubs (AREA)
US765930A 1968-10-08 1968-10-08 Multilamp flash unit Expired - Lifetime US3612849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76593068A 1968-10-08 1968-10-08

Publications (1)

Publication Number Publication Date
US3612849A true US3612849A (en) 1971-10-12

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Application Number Title Priority Date Filing Date
US765930A Expired - Lifetime US3612849A (en) 1968-10-08 1968-10-08 Multilamp flash unit

Country Status (8)

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US (1) US3612849A (tr)
BE (1) BE739952A (tr)
BR (1) BR6913060D0 (tr)
DE (2) DE1950201A1 (tr)
FR (1) FR2020159A1 (tr)
GB (1) GB1265705A (tr)
NL (1) NL6915166A (tr)
ZA (1) ZA697088B (tr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5871346A (en) * 1997-01-24 1999-02-16 Eastman Kodak Company Flashlamp array venting structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930315A (en) * 1931-06-23 1933-10-10 Gen Electric Flash lamp
US2091601A (en) * 1934-03-26 1937-08-31 Philips Nv Flash lamp
US3096025A (en) * 1959-12-23 1963-07-02 Rollei Werke Franke Heidecke Photographic flash apparatus
US3407717A (en) * 1965-07-12 1968-10-29 Eastman Kodak Co One-piece moldable camera socket for detachably holding a multilamp photoflash package
US3459933A (en) * 1965-11-30 1969-08-05 Philips Corp Flash lamp holder for use with a camera
US3517182A (en) * 1968-02-07 1970-06-23 Sylvania Electric Prod Photoflash lamp unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930315A (en) * 1931-06-23 1933-10-10 Gen Electric Flash lamp
US2091601A (en) * 1934-03-26 1937-08-31 Philips Nv Flash lamp
US3096025A (en) * 1959-12-23 1963-07-02 Rollei Werke Franke Heidecke Photographic flash apparatus
US3407717A (en) * 1965-07-12 1968-10-29 Eastman Kodak Co One-piece moldable camera socket for detachably holding a multilamp photoflash package
US3459933A (en) * 1965-11-30 1969-08-05 Philips Corp Flash lamp holder for use with a camera
US3517182A (en) * 1968-02-07 1970-06-23 Sylvania Electric Prod Photoflash lamp unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5871346A (en) * 1997-01-24 1999-02-16 Eastman Kodak Company Flashlamp array venting structure

Also Published As

Publication number Publication date
BE739952A (tr) 1970-04-08
GB1265705A (tr) 1972-03-08
FR2020159A1 (tr) 1970-07-10
DE1950201A1 (de) 1970-08-06
BR6913060D0 (pt) 1973-01-02
ZA697088B (en) 1971-05-27
NL6915166A (tr) 1970-04-10
DE6938782U (de) 1970-10-01

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