GB150912A - Improvements in apparatus for making photographic enlargements, reductions and reproductions - Google Patents

Improvements in apparatus for making photographic enlargements, reductions and reproductions

Info

Publication number
GB150912A
GB150912A GB2596419A GB2596419A GB150912A GB 150912 A GB150912 A GB 150912A GB 2596419 A GB2596419 A GB 2596419A GB 2596419 A GB2596419 A GB 2596419A GB 150912 A GB150912 A GB 150912A
Authority
GB
United Kingdom
Prior art keywords
copying
lamps
transparency
enlarging
slide
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
Application number
GB2596419A
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.)
EMILE PASCAULT
Original Assignee
EMILE PASCAULT
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 EMILE PASCAULT filed Critical EMILE PASCAULT
Priority to GB2596419A priority Critical patent/GB150912A/en
Publication of GB150912A publication Critical patent/GB150912A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

150,912. Pascault, E. Oct. 23, 1919. Enlarging, copying, and reducing.-A vertically-arranged enlarging and reducing apparatus is provided with means whereby a transparency and an opaque original can be copied independently or simultaneously. The lantern box comprises an upper box z<1>, Fig. 1, with a projecting lamp k and a lower box ABCD provided with lamps G and reflectors R. A transparency for copying can be placed either in slides ab or cd. For copying an opaque original and a transparency simultaneously both are placed in the slide a, b and both sets of lamps are used. An additional slide a<1>, b<1> is provided for a ground glass or coloured screens. The different sections of the apparatus slide on uprights 4, 5, 6, 7, Fig. 3, and are clamped by clamping-nuts 2. The upright 7 has an enlarging scale. An additional light-modifying device P mav also be adjustable carried by the uprights, and switches 8, 9, 10 are provided for using either or both sets of lamps.
GB2596419A 1919-10-23 1919-10-23 Improvements in apparatus for making photographic enlargements, reductions and reproductions Expired GB150912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2596419A GB150912A (en) 1919-10-23 1919-10-23 Improvements in apparatus for making photographic enlargements, reductions and reproductions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2596419A GB150912A (en) 1919-10-23 1919-10-23 Improvements in apparatus for making photographic enlargements, reductions and reproductions

Publications (1)

Publication Number Publication Date
GB150912A true GB150912A (en) 1920-09-16

Family

ID=10236161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2596419A Expired GB150912A (en) 1919-10-23 1919-10-23 Improvements in apparatus for making photographic enlargements, reductions and reproductions

Country Status (1)

Country Link
GB (1) GB150912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972931A (en) * 1957-07-18 1961-02-28 Walter J Roob Vignetting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972931A (en) * 1957-07-18 1961-02-28 Walter J Roob Vignetting apparatus

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