US3587423A - Device for automatically cleaning electrical contact surfaces in photographic apparatus - Google Patents

Device for automatically cleaning electrical contact surfaces in photographic apparatus Download PDF

Info

Publication number
US3587423A
US3587423A US753104A US75310468A US3587423A US 3587423 A US3587423 A US 3587423A US 753104 A US753104 A US 753104A US 75310468 A US75310468 A US 75310468A US 3587423 A US3587423 A US 3587423A
Authority
US
United States
Prior art keywords
cell
contacts
socket
actuating member
flashbulb
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
US753104A
Other languages
English (en)
Inventor
Horst Simon
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 US3587423A publication Critical patent/US3587423A/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
    • G03B15/0442—Constructional details of the flash apparatus; Arrangement of lamps, reflectors, or the like
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/561—Support related camera accessories

Definitions

  • ABSTRACT In photographic apparatus such as a still picture or moving picture camera, a device for automatically cleaning the connected surfaces of an installed electrical cell and mating circuit contacts utilizes an actuating member that extends into the cell holder for engagement with either the cell itself or one of the mating contacts and which is movable to effect relative movement between the cell and at least one of the contacts in response to the positioning of an associated member, such as a flashbulb, flashcube, or film magazine, in operative relation to the apparatus, or in response to the performance of some other function that is a prerequisite to the proper operation of such apparatus.
  • an associated member such as a flashbulb, flashcube, or film magazine
  • the present invention comprises, therefore, in combination with photographic apparatus having means for receiving an electrical cell including a pair of electrical contacts for connecting a received cell to an electrical circuit in the apparatus, a simple, inexpensive, and practical device for automatically cleaning the connecting surfaces of a received cell and at least one mating circuit contact in order to maintain an effective electrical connection therebetween.
  • the device includes an actuating member mounted on the apparatus and extending into the cell-receiving means for engagement with either the received cell or one of the circuit contacts, the actuating member being movable to effect relative movement between the cell and at least one of the contacts in response to movement of an associated member that is positionable on the apparatus as a prerequisite to proper operation of the apparatus.
  • the apparatus is a still picture camera that includes a socket for receiving a flashbulb, the associated member is a flashbulb insertable in the socket, the actuating member extends from the socket into the cell-receiving means to engage a received cell, and the actuating member is movable to move the cell relative to the mating circuit contacts in response to insertion of the flashbulb in the socket.
  • the second illustrated embodiment is similar to the first embodiment except that the flashbulb socket is replaced by a flashcube socket and the flashbulb is replaced by a flashcube.
  • the apparatus is a motion picture camera that includes a chamber for receiving a film magazine, the associated member is a film magazine insertable in the chamber, the actuating member extends from the chamber into the cell-receiving means to engage one of the circuit contacts, and the actuating member is movable to move the engaged contact relative to a received cell in response to insertion of the magazine in the chamber.
  • FIG. 1 is a fragmentary perspective view, with portions broken away for clarity of illustration, of one embodiment of the present invention, showing a cell. holder, a flashbulb socket, and a flashbulb not yet fully inserted in the socket;
  • FIG. 2 is a fragmentary perspective view, with portions broken away for clarity of illustration, of a second embodiment of the present invention, showing, in part of a camera housing, a cell holder and a flashcube socket, along with a flashcube not yet fully inserted in the socket; and
  • FIG. 3 is a perspective view, with portions broken away for clarity of illustration, of a motion picture camera, showing two cell holders, a chamber for receiving a film magazine, and a film magazine fully inserted in the chamber.
  • FIG. 1 of the drawings comprises, for a still picture camera, a cell receiving means such as cell holder 10 and a socket 11 for receiving a flashbulb 12 having a base portion 13 insertable in the socket. Included in socket 11 are two electrical contacts 11a and 11b engageable by base portion 13 to connect flashbulb' 12 to an associated electrical circuit (not shown). Extending from socket 11 into cell holder 10 is an actuating member such as pin 14 which is engageable with a cell 15 received in cell holder 10 between electrical contacts 16 and 17.
  • actuating member such as pin 14 which is engageable with a cell 15 received in cell holder 10 between electrical contacts 16 and 17.
  • Cell 15 is provided with electrical contact surfaces 15a and 15b at its opposite ends, surface 15a engaging contact 16 and surface 15b engaging contact 17 when cell 15 is inserted in cell holder 10 to connect cell 15 to the associated electrical circuit.
  • Urging cell 15 toward socket 11 is a biasing means such as resilient spring member 18.
  • spring member 18 urges cell 15 upward, as viewed in FIG. 1, to a first (upper) position between contacts 16 and 17.
  • base portion 13 actuates pin 14, and hence cell 15, in a downward direction, as viewed in FIG. 1, in opposition to the upward-biasing influence of spring member 18, to move cell 15 to a second (lower) position between contacts l6 and 17.
  • FIG. 2 of the drawings is similar to that illustrated in FIG. I, the differences being that the still picture camera housing H in FIG. 2 comprises a socket 11' for receiving a flashcube 12 having a base portion 13' insertable in socket 11 to actuate pin 14'.
  • the still picture camera housing H in FIG. 2 comprises a socket 11' for receiving a flashcube 12 having a base portion 13' insertable in socket 11 to actuate pin 14'.
  • Other elements in the embodiment of FIG. 2 are identical to those shown in FIG. 1
  • FIG. 2 Operation of the device illustrated in FIG. 2 is likewise the same as that of the device shown in FIG. 1, the associated member in FIG. 2 being a flashcube instead of a flashbulb as in FIG. 1.
  • FIG. 3 of the drawings comprises a motion-picture camera C having a cell-receiving means such as cell holder 30 for receiving a cell 33 between mating resilient contacts 31 and 32 and also a cell-receiving means such as cell holder 40 for receiving one or more cells 43' between mating resilient contacts 41 and 42.
  • Contacts 31 and 32 serve to connect cell 33 to one associated electrical circuit, such as an exposure-control circuit in the camera, while contacts 41 and 42 serve to connect cells 43 to another associated electrical circuit, such as a camera-drive-motor circuit.
  • a chamber 50 for receiving a film magazine 51 having surfaces 52 and 53 which face cell holders 30 and 40, respectively, when the film magazine has been in serted in chamber 50 as shown.
  • a resilient actuating member 34 Extending from chamber 50 into cell holder 30 for engagement with contact 31 is a resilient actuating member 34, and similarly extending from chamber 50 into cell holder 30 for engagement with contact 32 is a resilient actuating member 35.
  • resilient actuating members 44 and 45 extend from chamber 50 into cell holder 40 for engagement with contacts 41 and 42, respectively.
  • Actuating members 34, 35, 44, and 45 as are contacts 31, 32, 41, and 42, are made of a resilient material to provide a biasing influence urging the return of the actuating members as well as the contacts to their respective original positions upon the removal of film magazine 51 from chamber 50.
  • the primary object of this invention has been fully met in that, by the positioning of an associated member, such as flashbulb l2, flashcube 12, or film magazine 51, in operative relation to photographic apparatus, as a prerequisite to operating such apparatus, relative-movement between a received cell and mating circuit contacts is ensured, thereby providing a systematized, automatic cleaning of the connected surfaces to maintain an optimum electrical connection therebetween.
  • an associated member such as flashbulb l2, flashcube 12, or film magazine 51
  • the invention is intended to embrace any relative movement between a received cell and a mating circuit contact, for the purpose of cleaning the connected surfaces, that is effected automatically by the positioning of such a member or the performance of some other operation or function which may be necessary before the apparatus can be properly used.
  • a photographic apparatus having means for receiving an electrical cell including a pair of electrical contacts for connecting a received cell to an electrical circuit in the apparatus, the apparatus being operatable with an associated member positionable thereon preparatory to operating the apparatus, the improvement comprising a device for automatically cleaning mating surfaces of a received cell and at least one of said contacts to maintain an effective electrical connection between said surfaces, the device including a movable actuating member mounted on the apparatus and extending into the cell receiving means for engagement with one of said received cell and said contacts, the actuating member having means responsive to positioning of the associated member on the apparatus for moving the actuating member to effect relative movement between said cell and one of said contacts, wherein said actuating member and the one of said received cell and said contacts engaged thereby are movable in one direction in response to movement of said associated member to a predetermined position, and wherein said device includes biasing means for urging said actuating member and the engaged one of said cell and said contacts in the opposite direction in response to movement of said associated member from said predetermined position.
  • each of said actuating member and said one of said received cell and said contacts engaged thereby is movable in said one direction from a first position to a second position in response to movement of said associated member to said predetermined position, and wherein said biasing means urges each of said actuating member and said engaged one of said cell and said contacts in said opposite direction from said second position to said first position in response to movement of said associated member from said predetennined position.
  • a photographic apparatus having a socket for receiving a flashbulb, means for receiving an electric cell, an electric circuit, and a pair of electrical contacts for connecting a received cell to the electrical circuit; the improvement comprising an actuating member movably mounted on the apparatus and extending from the socket into the cell receiving means for engagement with one of said received cell and said contacts; and means responsive to positioning of the flashbulb in the socket for moving said actuating member to effect relative movement between the cell and at least one of said contacts.
  • a photographic apparatus having a socket for receiving a flashcube, means for receiving an electric cell, an electric circuit, and a pair of electrical contacts for connecting a received cell to the electrical circuit; the improvement comprising an actuating member movably mounted on the apparatus and extending from the socket into the cell receiving means for engagement with one of said received cell and said contacts; and means responsive to positioning of the flashcube in the socket for moving said actuating member to effect relative movement between the cell and at least one of said contacts.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Studio Devices (AREA)
  • Stroboscope Apparatuses (AREA)
US753104A 1967-12-08 1968-08-16 Device for automatically cleaning electrical contact surfaces in photographic apparatus Expired - Lifetime US3587423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK59653U DE1992850U (de) 1967-12-08 1967-12-08 Vorrichtung zur selbsttaetigen reinigung der batteriekontakte in photographischen und kinematographischen kameras sowie blitzgeraeten.

Publications (1)

Publication Number Publication Date
US3587423A true US3587423A (en) 1971-06-28

Family

ID=7229253

Family Applications (1)

Application Number Title Priority Date Filing Date
US753104A Expired - Lifetime US3587423A (en) 1967-12-08 1968-08-16 Device for automatically cleaning electrical contact surfaces in photographic apparatus

Country Status (4)

Country Link
US (1) US3587423A (es)
DE (1) DE1992850U (es)
FR (1) FR1594151A (es)
GB (1) GB1252450A (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869188A (en) * 1972-03-29 1975-03-04 Ian Y Morrison Meter mounting box
US4008356A (en) * 1974-11-01 1977-02-15 Fuji Photo Optical Co., Ltd. Cell retaining casing for photographic cameras
US5019465A (en) * 1989-03-06 1991-05-28 Dynabook Technologies Corporation Locking arrangement for a battery pack

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869188A (en) * 1972-03-29 1975-03-04 Ian Y Morrison Meter mounting box
US4008356A (en) * 1974-11-01 1977-02-15 Fuji Photo Optical Co., Ltd. Cell retaining casing for photographic cameras
US5019465A (en) * 1989-03-06 1991-05-28 Dynabook Technologies Corporation Locking arrangement for a battery pack

Also Published As

Publication number Publication date
FR1594151A (es) 1970-06-01
DE1992850U (de) 1968-08-29
GB1252450A (es) 1971-11-03

Similar Documents

Publication Publication Date Title
US3896467A (en) Compact photographic camera
US3587423A (en) Device for automatically cleaning electrical contact surfaces in photographic apparatus
US4025933A (en) Multiple adapter plug for instamatic-type cameras
US3561339A (en) Photographic apparatus
US8019214B2 (en) Camera accessory coupling apparatus
GB1413420A (en) Cameras
US2421396A (en) Electrically controlled camera
US3008398A (en) Camera focusing device
US3552283A (en) Ground plane indicia means
US3782812A (en) Cartridge positioning apparatus
US3463069A (en) Photographic camera for daylight and flash operation
US3359877A (en) Photographic film holder
US2388240A (en) Photographic device
US3682076A (en) Support member for preventing inverted insertion of a film cassette
GB1048486A (en) Photographic cameras and electronic flash guns
US3779145A (en) Film movement preventing means for cameras
US3684370A (en) Enlarging device for direct-vision three-dimensional pictures
US3651745A (en) Flash device for cinematographic camera
US3672276A (en) Film container
US2835176A (en) Carrying case for photographic apparatus
US3765313A (en) View finder
US1863891A (en) Photographic camera support
US3883884A (en) Photographic camera having an accessories mounting shoe
US3811758A (en) Cartridge-loaded motion picture projector
US3160083A (en) Adapter kit for cameras