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
GB11744/24A
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.)
APPARATEBAU FREIBURG GmbH
Original Assignee
APPARATEBAU FREIBURG GmbH
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 APPARATEBAU FREIBURG GmbHfiledCriticalAPPARATEBAU FREIBURG GmbH
Publication of GB223165ApublicationCriticalpatent/GB223165A/en
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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Projection Apparatus
(AREA)
Abstract
223,165. Apparatebau Freiburg Ges. March 14, 1924, [Convention date]. Viewing-apparatus for small pictures.-Apparatus for viewing kinematograph films without projection, comprises rollers c, d over which the film is drawn past an illuminated aperture l. The spindle of the roller c is connected by worm gearing e, f, g to a rotary slot shutter b. Illumination is effected by a lamp i with a reflector h carried in the box m, and the film may be viewed through a prism or inclined mirror n and a large lens o. The film is held against the roller c by a lever arm s operated by a lever t from the button r, against the action of a coiled spring on the pivot of the lever s. The window l is glazed with ground glass k.