4th, The combination of the concentric or annular chamber, F, and pipes, b, with the cup furnace or heat retort, H, when the latter is constructed as described, and shown upon the drawings, and occupies the relation to the former herein set forth, for the purpose set forth.
5th, The pipe, d, in combination with one of the pipes, b, for the purpose of affording a light for illuminating purposes, as herein described.
71,884.--SHAFT COUPLING.--John Keesey, Chester, Pa.
I claim the combination of the box, hub, or shell, B, reverse wedge-shaped blocks, C C', and bolts, D D', with their nuts, E E', or the equivalents of these devices, arranged for operation together, substantially as and for the purposes herein set forth.
71,885.--CLAMP SCREW.--Charles L Kingsley (assignor to Charles Parker), Meriden, Conn.
I claim the nut, E, formed with the seats, F, and the lever, G, formed with the trunnions, I, so as to be combined and operate in the manner and for the purpose described.
71,886.--MACHINE FOR BENDING WOOD.--Joseph Klahr, Bernville, assignor to himself, W.R. Weand, C.H. Zink, and James J. Wagenhorst, Philadelphia, Pa.
I claim, 1st, The formers, F F', with their arms, p p', levers, k k', and catches, q, or their equivalents, in combination with the clamps, G, the whole being constructed and operating substantially as and for the purpose described.
2d, The combination of the above, the weighted levers, D D', and the links, l.
3d, The adjustable plates, B B', with their shoulders, c, operating in combination with the formers, and their projections, q, substantially as and for the purpose described.