I claim the process, substantially as herein described, of treating fibrous and other materials for rendering them fire and water proof. 71,893.--COMPOSITION OF MATTER FOR THE MANUFACTURE OF WATER PROOF PAPER AND OTHER ARTICLES.--Robert O. Lowrey, Salem, N.Y. I claim, 1st, The new compound or composition of matter, produced by the treatment of vegetable fiber, substantially as described. 2d, The process herein described of treating vegetable fiber for producing a new compound, substantially as set forth. 71,894.--STREET SWEEPER.--Robert Y. McConnell and Geo. Pringle, Rochester, N.Y. We claim, 1st, The pinions, a, of the counter shaft, s, combined with carrier wheels, W, of street sweepers, by suitable sliding clutches, c, all arranged substantially as shown and described, and for the purpose of equalizing the strength and efficiency of those portions of the machine. 2d, The broom shaft, b, and the counter shaft, s, arranged substantially as shown, being held by means of the adjustable rigid straps, y, for the purposes set forth. 3d, The spring clutches, c, governed by means of the hand lever, D, connecting rod, f, lever, k, and the counter inclined planes, m, all arranged and operating substantially in the manner and for the purposes set forth. 71,895.--UTERINE SUPPORTER.--Frederick Meriwether, Tamola, Miss. I claim the combination, as described, of the spring, E, composed of copper or other soft metal, with the pessary, for the purposes set forth. Also, the combination, substantially as described, of the pelvic spring, the vertically adjustable bar and set screw, the soft metal spring, E, the pessary pillar, F, and the pessary, for the purposes specified. 71,896.--RAILROAD SIGNAL.--Abraham S. Miller (assignor to himself, J.P. James, and Charles Folsom), Zanesfield, Ohio. I claim, 1st, The combination of the trigger, E, and rock shaft, F f, with a railroad signal and suitable intermediate connections, so arranged that the contact of the train with said trigger shall throw the signal into its conspicuous position, substantially as described. 2d, The arrangement of the trigger, E, rock shaft, F f, arm, H, link, I, lever, G, wire, J, eccentric lever, L, catch, M, and shaft, B, signal, A, and weight, B', or its equivalent (P P1 P2 Q), substantially as and for the purpose specified. 3d, The arrangement of the trigger, E', rock shaft, F' f', arm, H', and rod or other suitable connection, N, all arranged and operating substantially as and for the purpose set forth. 4th, The combination, with the disk or signal, A, of the reflecting plate, a substantially as and for the object stated. 71,897.--SPINNING WHEEL.--Henry Miller, Ronald Township, Mich. I claim the arrangement of the adjustable and hinged rods and levers, constructed as herein described, for connecting the rocking treadle with the hinged spindle arm, so that the operator, by the foot, may move the spindle arm out or in at pleasure, as set forth and represented.