Mr. John M. Ludwig, of Edenburg, Va., has patented an An improved stock car has recently been patented by Mr. are provir!ed with arrow-shaped heads, whose interlocking improvement in the cla^s of middlings purifiers in whieh John L. Copp, of Rochester, N. H. The object of this the middlings are… … fers. Its construction is such that and have provided for the conve- PECK'S CAR COUPLING. should any of the cars leave the nient insertion and removal of the track they immediately become un- comb, for supporting comb of any coupled and leave the rest of the train. The advantages of any size…