Photo projection drawing board

Claim 1

Apparatus for displaying an aerial photograph from a projector having a zoom lens to a working surface comprising: a table for adjustably supporting said working surface; a transparent panel located in said working surface; a reflecting means located beneath said working surface and supported for pivotal movement by said table adjacent an edge thereof, said reflecting means including a reflecting surface located on an outer side of a support to reflect the image from said projector directly to said transparent panel without refraction thereof; an actuating mechanism connected to said reflecting means beneath said transparent panel for locating said reflecting means in a selective angular position relative to the plane of said working surface, said actuating mechanism including operating means easily accessible from the edge of the table to which said reflecting means is attached; a carriage adapted for movably supporting said projector relative to said working surface, said carriage including a chassis longitudinally spaced from said working surface and supported for movement in a direction generally toward said working surface, first power actuated drive means for displacing said chassis in said direction, first platform means supported on an upper surface of said chassis for movement in a generally lateral direction relative to said first direction, second power actuated drive means for selectively displacing said first platform means relative to said chassis, an uprightly extending post having a lower end connected to said first platform means, a sleeve supported for reciprocal vertical movement on said post, third power actuated drive means for selectively raising and lowering said sleeve relative to said post, second platform means pivotably connected to said sleeve, fourth power actuated drive means for selectively pivoting said second platform means, turntable means having an upper surface for supporting said projector and rotatably supported by said second platform means, and fifth power actuated drive means for selectively rotating said turntable means; a projector mounted on said upper surface of said turntable means with the optical axis of said projector and zoom lens thereof generally directed to said reflecting surface for reflecting an image projected by said projector unto said transparent panel remote control operating means situated on said working surface for selectively operating said first, second, third, fourth and fifth power actuated drive means and said zoom lens whereby said aerial photograph can be rectified in each of said longitudinal and said lateral directions.