X-ray diffraction goniometer wherein the specimen is stationary and the source and detector are movable

Claim 1

APPARATUS FOR THE DIFFRACTION OF X-RAYS ON THE HORIZONTAL SURFACE OF SPECIMENS AND FOR TAKING THE DIFFRACTION SPECTRUM THEREOF COMPRISING, A BASE, A STATIONARY SPECIMEN SUPPORT MOUNTED ON SAID BASE, AN X-RAY RADIATION SOURCE, A DETECTOR FOR RECEIVING X-RAYS DIFFRACTED FROM SAID SPECIMEN, A PAIR OF CO-AXIAL MOUNTING MEMBERS CARRIED BY SAID BASE FOR ROTATION WITH RESPECT THERETO ABOUT A HORIZONTAL AXIS, MEANS INTERCONNECTING SAID MOUNTS FOR CONCURRENT ROTATION ABOUT A COMMON AXIS IN OPPOSITE DIRECTIONS AT EQUAL ANGULAR VELOCITES, MEANS CONNECTING THE X-RAY SOURCE TO ONE OF SAID MOUNTING MEMBERS, MEANS CONNECTING THE DETECTOR TO THE OTHER OF SAID MOUNTING MEMBERS, AND MEANS POSITIONED BETWEEN SAID SPECIMEN SUPPORT AND BASE FOR ADJUSTING THE ELEVATION OF SAID SPECIMEN SUPPORT RELATIVE TO THE BASE, WHERE BY THE X-RAYS WILL IMPINGE ON THE SPECIMEN SURFACE AT ALL ANGLES OF ROTATION.