would tend to strike the chest of the wearer in a manner which would limit the amount a wearer could bend his head forward any limitations in movement caused by the shield would tend to discourage its use thereby minimizing its advantage in offering secure protection from spattered liquids generally the rear surface of the shield is displaced from the nose and mouth of a wearer the nose portion of the shield is generally far larger than is required for an average sized nose thus the mouth chin portion of the shield is displaced at least an inch or more from the mouth of a wearer allowing easy breathing since the flared margins of the shield do not fit against the face or head thereby allowing a ready air flow to the face of a wearer fogging or misting of the spectacles supporting the shield does not occur because of the air flow space the shield as depicted in fig1 has a unique 34 wide l 34 configuration the lower portion of the shield is not a continuation of the same plane which contains the spectacle socket portion of the shield the upper portion of the trailing edge and the lower portion of the trailing edge encompass an angle 34 alpha 34 which angle is generally from about 135 u00b0 to about 165 u00b0 so long as the upper trailing edge is parallel to a plane passing vertically through the spectacle sockets then angle 34 alpha 34 is an appropriate way to determine the angulation of the bottom portion of the shield from the upper portion if the trailing edges upper and lower portions are formed as an arc of a circle or an edge approximating the arc of.