Camera construction

Claim 1

A TWIN LENS REFLEX CAMERA COMPRISING A PICTURE TAKING LENS AND A FINDER LENS SPACED VERTICALLY FROM EACH OTHER, EACH OF SAID LENSES HAVING A FOCUSING LENS MOUNT ROTATABLE TO FOCUS ITS RESPECTIVE LENS, A SHUTTER AND DIAPHRAGM UNIT IN OPTICAL ALINEMENT WITH SAID PICTURE TAKING LENS, A SHUTTER SETTING RING ROTATABLE ON SAID UNIT, A FRONT WALL SUPPORTING SAID UNIT AND LENS MOUNTS AND LENSES, A COVER DETACHABLY MOUNTED ON SAID FRONT WALL AND HAVING A PORTION SPACED FORWARDLY FROM SAID FRONT WALL TO ENCLOSE SAID UNIT AND SAID LENS MOUNTS, MEANS OPERATIVELY COUPLING THE TWO LENS MOUNTS TO EACH OTHER TO TURN TOGETHER, A FIRST SHAFT AND A SECOND SHAFT EACH SUPPORTED FROM SAID FRONT WALL FOR ROTATION ABOUT RESPECTIVE AXES SUBSTANTIALLY PARALLEL TO THE OPTICAL AXIS OF SAID PICTURE TAKING LENS, AN OPERATIVE CONNECTION BETWEEN SAID FIRST SHAFT AND ONE OF SAID FOCUSING LENS MOUNTS SO THAT ROTATION OF SAID FIRST SHAFT WILL ROTATE BOTH OF SAID FOCUSING LENS MOUNTS TO FOCUS BOTH OF SAID LENSES SIMULTANEOUSLY, AN OPERATIVE CONNECTION BETWEEN SAID SECOND SHAFT AND SAID SETTING RING ON SAID UNIT SO THAT ROTATION OF SAID SECOND SHAFT WILL ADJUST THE POSITION OF SAID SETTING RING, A FIRST MANUALLY ROTATABLE SETTING KNOB AND A SECOND MANUALLY ROTATABLE SETTING KNOB EACH MOUNTED ON SAID COVER AND LOCATED RESPECTIVELY IN AXIAL ALINEMENT WITH SAID FIRST AND SECOND SHAFTS, AND MEANS FORMING AN AXIALLY DETACHABLE DRIVING CONNECTION BETWEEN EACH OF SAID SETTING KNOBS AND ITS RESPECTIVE SHAFT WHEN SAID COVER IS IN NORMAL OPERATIVE POSITION ON SAID FRONT WALL, SAID DRIVING CONNECTION BEING SO FORMED THAT WHEN SAID COVER IS DETACHED AND MOVED FORWARDLY AWAY FROM SAID FRONT WALL, SAID DRIVING CONNECTIONS WILL SEPARATE AND SAID KNOBS WILL COME AWAY WITH SAID COVER AND SAID SHAFTS WILL REMAIN WITH SAID FRONT WALL.