MECHANICS' EXCURSION.—On Saturday, the Sod inst,, the machinists, engineers, and operatives, numbering about 500, in the employ of Messrs. Danforth, Cooke & Co., Locomotive and Cotton Machinery Manufacturers, of Paterson, N. J,. visited Jersey City, by railroad, on a pleasure excursion. They made a most favorable impression upon all who saw them, by the respectability of their appearance. The works of Messrs. Danforth, Cooke & Co., are very extensive, and the firm has long been distinguished for its manufacture of good cotton machinery. Last year the manufacture of locomotives was commenced, and since that time a number of engines have been built, and foe occasion of the excursion was the completion of a new first-class locomotive, named Governor Williamson. The mechanics, along with them some of the employers, arrived in Jersey City a little after 12 M, I and formed a line of process- in with music i playing and banners flying, through several of the streets, anil afterwards sat down to a fine repast in one of the hotels, where they had a pleasant and happy time of it lot a lew hours. A good understanding between employers and their mejiis a beaaiifc to both l'-r. Danfoith j gave an appropriate sentiment at the dinner, which is worth some circulation, it was— " Good workmanship and goot wages." PARKER'S WATER WHEEL.—We have received a communication from 0. H. P. Parker, brother of the inventoi of the wheel known by the name of " Parker's Water Wheel," in answer to the article of J. B. Conger, which was published on page 235, this volume, Scientific American. In that article it is stated that Fourneyron, ir Vance, gave the inlet water to a wheel a whirling motion, before Mr. Parker. This is denied in the letter we have received, and other statements in the said article of Mr. Congsr are stated to have done injustice to Parker's claims. Having received a great number of communications on the Parker Water Wheel we have determined to publish none of them, as they are mostly of a controversial character. Mr. Parker has done much to itnpiove reaction water wheels; in fact, we believe that our i country is more indebted to him than any other man for the high perfection which has been attained in America, in ie,iff urn hydraulic motors. He should have with an ample ruward, but like loo many other worthy inventors,did not. ASSOCIATION FOK THE ADVANCEMENT OP SCIENCE.—On Thursday, the aSti; i.l., two weeks from Thursday next. fo. American Association tor the Advancetnens of Science, will commence its annual sesui.;. at Cleveland, Ohio. This valuable society has had no meeting since the annual se:tm lit W at Albany in 1851, the session of l$-'2 having been putoffin consequence of the prevalence of cholera along various travelling routes h JjiFerent parts of the country, and the apprehensions entertained respecting the epidemic. During its brief existence, this Society has attained considerable importance in the eyes of the general public. The meeting of the present year will be the first held west of the Alle-ghenies, and will, it is said, be attended by many professors and others from that region. The members will no doubt be hospitably entertained by the people of Cleveland, a place celebrated for its beauty, hospitality, and enterprize. List of Patent Claims Issued from the United States Patent Office por, fn& YHEK EKDiua JULY 5,1853 INSTRUMENT FOK CORRECTING LATBBAL JJSVIA- Yro.vs or n E SPINE—By Alaason Abbe, of Boston, Mass ; I claim the instrument, ag made, of a combination uf the crutch, the hip plates, the plates, the wedges and screws thereof, the breast or body band, and its pads, and straps or oth.-r contrivances for onOn'mr- tj.'ft whole instrument to the thigh and body, the vrhoii- being applied together and made to operate &? specified. CLAVICLE Aajus'rwss—By A. ?.I. Day, of B.mning-ton, Vt.: I cla-iai th*j ams of the yoke, hollo A''d PS described, ia combination with the straps and al-tached and opevatuig- as described, by meanM wbich the "proraion proeasa of the scaimla 13 com-pres&el, and the arm held in position, for uniting a fracture of the clavicle, as spasiliGd. CRADLE AHJ TJBTE-A TETE—liy *;eo. H. Hazle-wood, of Boitoo. Mass.: I claim constructing the two ides of the bed frame of the cradle, that portions of each may be turned around and arranged parallel to one siDoihe?' and ac.roas the bed frame so as to convert such bed frame inio a tete-a-tete seat or chair, as spoeiGec!. CANSTON ANI O'CKBR i'laii-AKiis—By C. W. Lancaster, of Ne7 Bond street, Bng. Patented in England Jaa. 10, 1851: I claim, n'rat, the method of boring; the banal of a gnu or other fire-arm, so that a croas section thereof would be in the form either of an ellipse or of a series Oicurvu. by the mechanism as described, or it3 substantial equivalent, as set forth, whereby the injurious sution of the angular groova in ordinary rifles, in obviated, wbiia all its advantages are retained. Secondly, I claim tlie construction of the boring-tool for giving to the bore a form of which the ero:* section is not a true circle, that is to say, I claim tV; combination of the cutter bar with the boring tu'e, ths said bar passing through se-M tuba eecfcutneallf. fcfee axes of both beiag parallel, whoruby the ellipti-eat or other shaped bore, is given as described ; aiso the bsr and its inclined plane in combination with ths cutter for regulating the depth of the cut, as i described; also cbe expanding collar, the inclined f or bevelled space, on the boring tube, with the other pjrts in connection therewith, as described, for the purpoie of guiding the boring-tool when boring out aa irregularly formed cylinder, as described. Third, I claim the curved mil, or other like fixture for giving the proper niotiou to the barrel of the gun during the boring operation, by which, thfl spiral or twist is given, a-j described. Fourth, I claim tho cap for supporting the boring tube just *,*. tbe moment the cutter h about to clear the muzzle, a*j mi* forth. PROPELLING VESSELS—By I. L. Mitchell, of Bir-keahead, JOo Patented in England Nov. 2-5,1848 : I claim constructing the blade or blades of the same ttpoa the principle gr in the form of the " bomma-reng": as describes. TaosSBS—By John North, of Middletowa,Conn : I claim as my improvement in trusses and support ers, the mode set forth of adjusting the pressure of the pad, tbat is to say. by the employment of the right and left sorew, a;id the adjusting nut in coni- nation with the pad lever in the manner set forth. LASTEBNS—By W. Porter & E. A. Tuttle, of Wil-liamsburgh, N Y : We claimthe small rods extending from the lower part or cup of the lantern to the top or cap, and uniting them both together by a catch, thereby securing the globe between them in the manner get forth. PADDLES FOB VESSELS—By Amzi C. Semple, of Cincinnati, Ohio : I claim the use of vulcanized in-dia rubber or other similarly elastic substance which will produce the intended effect iu the construction erf floats of paddle wheels for the purpose described. Caow KILLEBS— liy N. J. Tilghmau, of Salisbury, MD-: I claim the combination of the dart, helical spring sliding rest, or head, attached to the triggers and the dog, with the hollow in which it is placed. IMPROVEMENT IH BRtJSHES~By J. Cross, of New London, Ohio : 1 claim a brush consisting of a divided catt to hold tho handle and bristles, constructed and arranged a.s described, in combipation with a wedge forced among the enda of the bristles within the caw aod tightened from time to time, .so as to squeeze and hold them., by screwing the two parts of tht) case together, as specIUed. KE-ISSUi:. PsOCES oF l:'l,oi:aisu—V'7 O. 1'.-Bounell, of l'e-ouroFeh, Mich. Patented iig'inally Aug 14, 1849 : I el aim the process of grinding theoflj! of grain, immediately after it has passed from the bolts, contemporaneous with the first flouring, and by the continuous operation of the machinery adapted to said proii'JiS. as set forth, for the purpose of increasing the quamity and improving the quality of the su-pariine, or other flour. DESIGN. AV/U'FLK l*AKi.u—By Nathl. Waterman, of Bos Via. Mass.