72,100.--MACHINE FOR SHARPENING SAWS.--J.B.Smith, Milwaukee, Wis. I claim cutter, B, gauge, E, and adjustable cone-mandrel, D, in combination, substantially as and for the purpose described. 72,101.--RAISING OILS AND BURNING-FLUIDS BY PNEUMATIC PRESSURE.--John Henry Smith, Allegheny city, Pa. I claim raising, by pneumatic pressure, oils or burning-fluids from an oil or fluid compartment of a ship or other vessel, and mixing with said oil and fluid the gas generated therefrom, as herein described and set forth. Also, the combination and arrangement of the pipes, A B C f and f', when used in connection with the oil or fluid compartment, R, of a ship or other vessel, the whole being constructed, arranged, and operating substantially in the manner hereon described and set forth. Also, in connection with the above, ejecting fine jets of water into the flame, caused by the burning of the oil or fluid and other matter mixed therewith, as herein described and set forth. 72,102.--SHIP FOR TRANSPORTING PETROLEUM.--John H. Smith, Allegheny city, Pa. I claim, providing the hulls of ships and other vessels with a compartment for oils and burning fluids, said compartment being protected with water, and furnished with supply and discharge pipes, substantially as herein described and for the purpose set forth. 72,103.--DEVICE FOR SHEARING AND CLIPPING WOOL.--R.T.Smith and J.K.Priest, Nashua, N.H. I claim, 1st, The revolving spring cutter or cutters, O, in connection with a cutter-plate. 2d, The open cutter-plate, P. 3d, The shield, N, in connection with the cylinder, C, covering shaft, M, and extending into groove, g, substantially in the manner and for the purpose herein described. 72,104.--CORN PLOUGH.--John Snyder, Williamsfield, Ohio. I claim the combination of the tongue, H, strap, L, and upright, K, with the forward end of the central beam, A, substantially as herein shown and described, and for the purpose set forth. 72,105.--BOOT-HEEL POLISHER.--V.K.Spear, Lynn, Mass. I claim, 1st, The reciprocating polisher, moving in the line of an arc of a circle, by means of mechanism substantially as herein described, and having an elastic bearing, as and for the purpose set forth. 2d, In combination with a reciprocating polisher, substantially as described, I claim the pivoted sliding frame to support the boot or shoe constructed, arranged, and operating substantially as set forth. 72,106.--MEANS FOR PROPELLING VESSELS.--Robt.R. Spedden and Daniel F. Stafford, Astoria, Oregon. We claim, 1st, The combination of the rack-frame, K, racks, I and J, and ratchet wheel, H, with each other and with a shaft, D, for the purpose of applying power to said shaft, substantially as herein shown and described.