FR2389919A1 - - Google Patents

Info

Publication number
FR2389919A1
FR2389919A1 FR7812394A FR7812394A FR2389919A1 FR 2389919 A1 FR2389919 A1 FR 2389919A1 FR 7812394 A FR7812394 A FR 7812394A FR 7812394 A FR7812394 A FR 7812394A FR 2389919 A1 FR2389919 A1 FR 2389919A1
Authority
FR
France
Prior art keywords
column
fixed
slide
spring
photographic
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.)
Withdrawn
Application number
FR7812394A
Other languages
French (fr)
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.)
POLSKIE ZAKLADY OPTYCZNE
Original Assignee
POLSKIE ZAKLADY OPTYCZNE
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 POLSKIE ZAKLADY OPTYCZNE filed Critical POLSKIE ZAKLADY OPTYCZNE
Publication of FR2389919A1 publication Critical patent/FR2389919A1/fr
Withdrawn legal-status Critical Current

Links

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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/56—Mounting enlarger head on column ; Mounting reproduction camera on column

Abstract

Mécanisme d'allègement d'une tête d'agrandissement photographique dont la course de coulissement le long de la colonne de l'agrandisseur est considérable. Le mécanisme comprend un long ressort de tension 1 suspendu par dessus un galet 2. Sur la colonne 5 est fixé, d'une manière coulissante, un coulisseau 6. L'une des extrémités du ressort est fixée à la colonne 5 au moyen d'un crabot 7, tandis que l'autre extrémité est fixée au coulisseau 6. Accessoire pour matériel photographique.Lightening mechanism of a photographic enlarging head whose sliding stroke along the column of the enlarger is considerable. The mechanism comprises a long tension spring 1 suspended over a roller 2. On the column 5 is fixed, in a sliding manner, a slide 6. One end of the spring is fixed to the column 5 by means of a dog clutch 7, while the other end is fixed to the slide 6. Accessory for photographic equipment.

FR7812394A 1977-05-03 1978-04-26 Withdrawn FR2389919A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL1977197832A PL102055B1 (en) 1977-05-03 1977-05-03 COUNTERBALANCE MECHANISM FOR PHOTOGRAPHIC ENLARGER HEADS

Publications (1)

Publication Number Publication Date
FR2389919A1 true FR2389919A1 (en) 1978-12-01

Family

ID=19982284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812394A Withdrawn FR2389919A1 (en) 1977-05-03 1978-04-26

Country Status (6)

Country Link
CS (1) CS205119B2 (en)
DE (2) DE7813291U1 (en)
FR (1) FR2389919A1 (en)
GB (1) GB1586652A (en)
IT (1) IT1095717B (en)
PL (1) PL102055B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH411505A (en) * 1963-09-12 1966-04-15 Zeiss Jena Veb Carl Arrangement for weight compensation, especially with precision mechanical optical devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH411505A (en) * 1963-09-12 1966-04-15 Zeiss Jena Veb Carl Arrangement for weight compensation, especially with precision mechanical optical devices

Also Published As

Publication number Publication date
IT7822924A0 (en) 1978-05-02
DE7813291U1 (en) 1979-10-18
PL197832A1 (en) 1978-03-13
GB1586652A (en) 1981-03-25
IT1095717B (en) 1985-08-17
CS205119B2 (en) 1981-04-30
PL102055B1 (en) 1979-02-28
DE2819171A1 (en) 1978-11-09

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Legal Events

Date Code Title Description
ST Notification of lapse