Brinkerhoff v. Aloe

This is a bill to restrain the infringement of letters pat* ent No. 224,991, granted to Alexander W. Brinkerhoff under date of March 2, 1880, for an improvement in “rectal, specula.” The patentee, in his specification, thus describes his invention:

“My speculum is made of metal, and plated in tlie usual manner, to secure a bright interior and smooth surface. In shape it is conical, and has one side slotted through its entire length of chamber. Into such slot is closely fitted a movable slide, having upon its rear end a handle for actuating it. On the side of the tube opposite the slide is…