I claim the sliding holder, B. and adjustable rail, C, in combination with the grinding wheel, D, constructed and arranged to operate as herein described, for the purpose specified. 72.084.--AUTOMATIC REGISTER.--J.T. Buckley, Ottawa, Ill. administrator of the estate of Stephen Rigler, deceased. I claim 1st, Operating a register slide so as to regulate the temperature of apartments, by means of a column of mercury within a tube, which is arranged within the register itself and acts upon said slide through the means substantially as described. 2d, The combination of an index hand, B, with a register arranged and operated by a column of mercury within a tube, which is arranged within the register itself, substantially as described. 3d, The combination with a circular turning register slide, B, of mercury pipe, G', piston rod, g1, cross head, g, toothed lever, F, spur wheel, d, and shaft, b, arranged, constructed and operating substantially as described. 72,085.--SHOVEL PLOW, CULTIVATOR, ETC.--P.A. Ross, Harveys, Pa. I claim 1st, The combination of the notched rack, E, and removable pin, F, with the pivoted or rocking cross-bar, C, and slotted standard, B, substantially as herein shown and described and for the purpose set forth. 2d, Connecting the forward ends of the handles, D, to the beam, A, by means of the hook or eye-bolt, G, and pivoted bar or plate, H, when used in connection with the pivoted or rocking cross bar, C, and pin, F, substantially as herein shown and described and for the purpose set forth. 72,086.--FENCE POST.--Robert Ramsey, New Wilmington, Pa. I claim the fence-post, P P' P", having dove-tail gains at its lower end, in combination with the parallel slits, A A', and the keys, e e e e, substantially in the manner and for the purpose set forth. 72,087.--CHURN.--J.A. Rowley, Vanceburg, Ky. I claim the arrangement substantially as described of the driving wheel, C, shafts, c c', spring, D, notched bracket, E e. and friction pulley, F G, for the purpose of imparting a rotary motion to the dasher shaft, f, in the manner herein described and set forth. 72,088.--STEAM TRAP.--David Saunders, Brooklyn, N.Y. assignor to Jos. Nason & Co., New York city. I claim 1st, The arrangement of the central part, C, of the cover and main cover, B, substantially as herein set forth. 2d, The arrangement of the stop-joint between the floating part and the fixed part of the apparatus, whereby to avoid the clogging by accumulations of dirt as specified. 3d, The arrangement of the tubes E and H, the tube, H, being mounted upon the floating part, substantially as herein specified. 72,089.--DOOR SPRING.--Rudolph Schrader, Indianapolis, Ind.