Image Number 3 for United States Patent #4319542.
An apparatus for the preparation of blood smear specimens is constructed to successively discharge glass slides from a stack. A first glass slide is laid horizontally near the point of discharge and a second glass slide is discharged into a slanted position with its lower edge in contact with the leading end of horizontal glass slide. A drop of blood is applied near the leading end of the horizontal glass slide behind the position of contact of the glass slide in the slanted position and the horizontal glass slide is advanced to smear the blood onto the horizontal slide using the slanted glass slide as a coater. The slanted glass slide is then allowed to fall into the horizontal position and another glass slide is discharged from the stack into the slanted position, whereafter the process is repeated.