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
Inventor
Herbert William Victor Wilson
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.)
Individual
Original Assignee
Individual
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 IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of GB189707350ApublicationCriticalpatent/GB189707350A/en
7350. Wilson, H. W. V. March 22. Dark slides.-Relates to a catch or fastening for the shutter of a dark slide, to prevent double exposures. A sliding plate D, Fig. 1, is guided by two pins E, E fixed on the frame of the dark slide. This sliding plate is pulled to the left by a spiral spring G when the shutter B with the pin K is pulled out. When the shutter is again pushed in, the pin K passes over and is locked by the projection J<1> on the plate D.
GB189707350D1897-03-221897-03-22Improvements in Photographic Dark Slides.
ExpiredGB189707350A
(en)