We noticed last week that L. A. Gouch, architect, Harlem, now of Yonkers, New York, had 'designed to construct double cast-iron partition walls for dwellings, the advantages of which we distinctly pointed out. In the notice of the same, however, there is one error, which d emands correction. The thickness of the plates was stated to be one sixteenth of an inch in thickness, it should have read one-sixth of an inch. Mr. Gouch has taken measures to secure a patent, and will make his plates one-fourth of an inch thick, thereby rendering them, when double very strong tor partition walls. The members of the Montreal Mechanics' Institute, with their wives and children, are ! going to visit Portland, Me. List of Patent Claims Issued rroaa the United States Patent Office FOR THE WEEK ENDING AUG. 23, 1853, PROCESSES FOR PURIFYING ALCOHOL—By Luther Atwood, of Boston, Mass.: I claim the use of the manganates and permanganates existing as soluble compounds, however obtained, for purifying alcohol so as to adapt it to nice purposes. GENERATING STEAM—By J: P. Moinier P. H. Boutigny, of Paris, Prance. Patented ia Prance, Jan. 18, 1853 : We claim, in generators for generating steam at high temperatures from water introduced into the generator when in a highly heated state, injecting or introducing water from the top or near the top of the generator, when this mode of feeding qr introducing the water ia combined with the series of perforated metallic diaphragms described, arranged one above another in the generator, so as to subdivide the water, and at the same time increase the evaporatidgaurfaoe of the generator, as described, the wateE being gradually heated, and subdivided in its passage through the apertures or meshes of the diaphragms before it comes in contact with the more highly heated surface of the generator, as described. SOAP CUTTING MACHINES—By J. B. Buff, of New York City : I claim making the wire knives, arranged snd set with weighta capable ofyielding, so that they will form a loop in passing through the soap, and consequehtly cut it smooth and straight in combination with the feeding slatted bed, or any other equivalent device for feeding and forcing the soap up to the said yielding wire knives, the whole being as described. [See notice of this invention on page 204, thia volume Sci. Am.] OSCILLATING STEAM ENGINES—By M. J. Gardner, of York, Pa.: I claim the mode of iotroducing the steam, the circular steam tubes, the circular steam chest, and packing boxes, as described. I do not, however, .confine myself to the precise position or dimensions of the various parts described, but to use such positions and dimensions substantially the same, as may be best adapted to produce the desired effect. SEED PLANTERS—By Peter Horn, of Hagerstown, Md.: I claim the spring, in combination with the projection and armor lever, for the purpose of opening and closing the recess through which the seed passes, as set forth-Second; I claim the arm or lever, in combination with the lever and fulcrum, for the purpose of raising or lowering the drill tubes and operating the springs, as described. HAY RAKES—By F.B.Parker, of Qaeeosville.Ind.: I claim the spring catches projecting d0miya Irom the front ends of the hand bars, and provided with sloping lip", which, bearing upon the fronttines. assist in holding the rake to its place until relieved by the withdrawal of the main stop, aa described. ARRANGEMENT OF CUHTERS FOR TURNING—By Milton Roberts, of South Levant, Me,: I claim arranging straight edged and grooved cutters on a frame moving parallel to the axis of the lathe, when said cutters are placed in pairsobliijuelyto thepiece to be turned, each set forming salient angles with each other in the frame, by which arrangement each get acta by a gradual drawing cut upon the piece, the grooved tools following to finish tha work. [An engraving of this machine may be found on page 108, this volume Sci. Am.] G-BATE BARS—By Samuel Vansyckel, of Little York, N, J.: I claim forming a hook or catch upon the under side of the grate bars, and passing through or over said hooks, or catches a holding bar to prevent twisting or warping, as described. BUTTEB WORKERS—By Lettie A. Smith, of Pine-ville, Pa : I claim, first, the combination of the cooling drawer or ice box, with it butter tray, as described. Second, I do not claim, in general, the device of the working lever in combination with a butter tray or table, but I claim forming such working lever with acute angles at the sides of its working face so that it may serve the double purpose of breaking or pressing the butter and turning it over. [See notice of this invention on page 284, Vol. 7] RAILROAD CAR SEATS—By Wm. M. Warren, of Watertown. Ct : I claim the wanner in which the foot boards are constructed and arranged, viz , the foot-boards being attached by joints to slides, said slides having racks on their upper surfaces, and working on beds connected by hinges, the under sides of the slides being provided with spars or elicits, which catch into the racks, and retain the foot-board, when pressed upon by the feet; the beds being retained underneath the seat, when the footboards are not in use by means of the catches, or by any other convenient mode. [See notice of this invention on page 108, this volume Sci. Am. Mr. Warren has two patents on car seats] BORING CANNON—By L. A. B. Walbach, deceased, late of the U.S. A.: I claim the method described of boring cannon or the barrels of other ordnance or fire-arms, by perforating the same with an annu-la,r hole, which leaves a central core, in combination with a second operation for detaching and removing the core, as specified, whereby the amount of material to bereduced to chips, the time and labor of boring, and the wear of tools, are greatly diminished, aad the accuracy of the work increased. 1 also claim the transverse cutter or the equivalent thereof, for grooving or cutting off the h/,se of the core, as specified. I also claim toe method described of ascertaining the quality of the gun, by taking out a core of sufficient diameter and length, from the axis or center of the bore to be tested mechanically or otherwise. COUNTERPANES—By Zaohariah Allen, of Providence, R. I.: I claim the ribbed counterpane described, as a new manufacture, it being so made that he thickness and twist of the cords forming the ribs on thesame, by their tendency to untwist, will 1 give to the said ribs a wavy or undulating surface, as set forth. PADLOCK—By Henr-y Ritchie (assignor to S. 0. Thompson, G. W. Westerfield Henry Ritchie), of Newark, N, J.: 1 claim the combination of the bolt, guard, and the double toothed tumbler, one tooth of said tumbler fitting in the shackle, and the other tooth fitting in the notch at the back of the bolt, the bolt, guara, and tumbler, operating as setforth. [This is a very simple and good improvement.) GUTTING AND BEVELLING PRINTERS RULES—By Snow Magoun, of Newton, Mass, (assignor to E. N. Moore C. H. Crosby, of Boston, Mass.) : I claim the machine described, for cutting and bevelling printers' rules, constructed with a sliding tool carriage, which carries the cutting tool forward and back across the rules, as set forth. DIVING BELLS—By Jonathan Foreman, of Boston, Mass, (administrator of E. W. Foreman, deceased, late of New Rochelle, N. Y., and assignor to Henry W. Sears, of New York City : What I claim as the invention of the said Foreman is the combination of the reservoir of compressed air at the surface, in connection with the diving chamberor bell, and the arrangement of the movable block or pulley, as described, whereby the chamber or bell may be moved and directed at the will of the operator within, as set forth. 1 MACHINES FOR SEPARATING STKATV FROM GRAIN —ByB. S.Snyder, of Charlestown, Va. Additional Improvement; original patent dated June 13 1848 : Having set forth, in addition to the original specification, the utility of my additional improvements, I claim the peculiar construction of the rotary apparatus, formed of concavo, convex aprons or shields combined with the curved prongs, the said rotary apparatus used in combination with the threshing cylinder, as zet forth. I also claim setting the spout at about an angle of 45 degrees with the horizon, and adding the escape piece, to prevent the grain from flj ing about. DESIGNS. STOVE—By S. H. Sailor, (assignor to J. G. Abbott Archilus Lawrence), of Philadelphia, Pa. NOTS—Five of the patents in the above list were secured through the Scientific American Patent Agency.