GB494266A - Improvements in or relating to photographic developing tanks - Google Patents

Improvements in or relating to photographic developing tanks

Info

Publication number
GB494266A
GB494266A GB1179337A GB1179337A GB494266A GB 494266 A GB494266 A GB 494266A GB 1179337 A GB1179337 A GB 1179337A GB 1179337 A GB1179337 A GB 1179337A GB 494266 A GB494266 A GB 494266A
Authority
GB
United Kingdom
Prior art keywords
watch
photographic developing
thermometer
relating
visible
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
GB1179337A
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.)
ALBERT GOODHART
LEO A LEIGH
PERCY WOOTTON HARRIS
Original Assignee
ALBERT GOODHART
LEO A LEIGH
PERCY WOOTTON HARRIS
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 ALBERT GOODHART, LEO A LEIGH, PERCY WOOTTON HARRIS filed Critical ALBERT GOODHART
Priority to GB1179337A priority Critical patent/GB494266A/en
Publication of GB494266A publication Critical patent/GB494266A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/007—Processing control, e.g. test strip, timing devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Abstract

494,266. Watches combined with thermometers and photographic developing tanks. HARRIS, P. W., GOODHART, A., and LEIGH, L. A. April 24, 1937, No. 11793. [Class 139] [Also in Group XX] A combination instrument for use with a photographic developing tank comprises a tubular stirrer 10 arranged to rotate a reel 22 by means of a connecting pin-and-slot 20, 21, the head 14 of the stirrer carrying a watch 13, and the part 15 a thermometer 17. The thermometer scale may be visible in an opening 18 or may be coiled around the watch to be visible from the same position as the watch. Alternatively, the thermometer may comprise a bimetallic strip. A pre-set time indicator may be arranged adjacent to the watch to indicate the time at which development will be complete.
GB1179337A 1937-04-24 1937-04-24 Improvements in or relating to photographic developing tanks Expired GB494266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1179337A GB494266A (en) 1937-04-24 1937-04-24 Improvements in or relating to photographic developing tanks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1179337A GB494266A (en) 1937-04-24 1937-04-24 Improvements in or relating to photographic developing tanks

Publications (1)

Publication Number Publication Date
GB494266A true GB494266A (en) 1938-10-24

Family

ID=9992803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1179337A Expired GB494266A (en) 1937-04-24 1937-04-24 Improvements in or relating to photographic developing tanks

Country Status (1)

Country Link
GB (1) GB494266A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771015A (en) * 1954-02-19 1956-11-20 William J Hall Film developing device
US2837919A (en) * 1954-04-28 1958-06-10 John L Chaney Darkroom thermometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771015A (en) * 1954-02-19 1956-11-20 William J Hall Film developing device
US2837919A (en) * 1954-04-28 1958-06-10 John L Chaney Darkroom thermometer

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