eVS FSDSBAI. SBfOalEB. �Babcock V. JuDD and anotli&i'. �iCireuit Court, D. Gonneeticut. Pebruary 23, 1880.) �Patent — New Combination op Old Inghedckkts — Substitution of New Ingredient — GiLt. v. Wells, 21 Wali. 1. — The substitution of a new ingredient in a patented combination of old ingredients does not constitute an infringement. �Bill in Equity for alleged infringement of lettera patent. �Charles E. Gross, for plaintif. �Charles E. Mitchell, for defendants. �Shipman, J. This is a bill in equity founded upon the alleged infringement of letters patent for an improved win- dow-spring catch, or sash-holder, whioh were issued to Frank- lin Babcock on September 29, 1868. The plaintilïs are the owners of the patent. �The patented devioe consista of a cylindrical shell or socket, having a screw eut upon its outer periphery, into which Boeket is inserted, through an opening in the outer end, a sliding' boit. The boit consista of a slender stem within the socket, and a sliding shoulder and thumb flange, which are exterior to the socket. Around the stem is a spiral spring, acting between the bottom of the socket and the sliding choulder. The stem passes through a whole in the bottom of the socket, and is riveted at the end so as to limit outward movement. The hole acts as a necessary bearing for the stem, whioh is of small diameter as compared with the shell. �By means of the thumb flange the sliding boit is pressed back against the spring. The whole is adaptedtobe screwed into the jamb of a window-frame, so that the thumb latch shall extend outward in front of the sash, and the angle of the boit shall be so placed that it can enter into notclies in the side of the sash to hold the window, and can be released by pressing back the boit by means of the thumb flange. �The invention consisted merely in the combination of the different elements, ail of which were old. The same form of boit was manufactured many years ago in New Britain. The claim is for "the combination of the screw socket A, sliding ��� �
