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.)
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.)
Construccion de Aparatos Mecanicos SA
Original Assignee
Construccion de Aparatos Mecanicos SA
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 Construccion de Aparatos Mecanicos SAfiledCriticalConstruccion de Aparatos Mecanicos SA
Priority to ES0220436ApriorityCriticalpatent/ES220436A3/en
Publication of ES220436A3publicationCriticalpatent/ES220436A3/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
Improvements in the photo enlargers, characterized in that they essentially include an increase in the normal ventilation of the interior of the lantern by an additional series of holes arranged on the edge of the mouth or base of the upper part of the lantern, covered, for the lighting effects, by the coupling of the edges of the lower part, an automatism in the approach for any chosen distance between the lantern and the table by means of an axial sliding of the lens holder achieved by the intervention of a lever actuated by a stop provided in the deformable parallelogram that supports and joins the flashlight with the vertical support column, a tilting by levers compensated for the entire set of the flashlight to support it or separate it from the negative-holder plate and by the arrangement of the flat convex condensing lens, directly supported on the film negative. (Machine-translation by Google Translate, not legally binding)
ES0220436A1955-02-261955-02-26Some improvements in the photography extenders (Machine-translation by Google Translate, not legally binding)
ExpiredES220436A3
(en)
Transmission projector in an illuminated room and on a screen behind the operator's back (Machine-translation by Google Translate, not legally binding)