Electrical Devices. nIGH TENSION STRAIN INSULATOR.—L. Rteinberger, New York, N. Y. rhis insulator is for general use where currents of high potential are employed, it being especially well adapted for use in wireless telegraphy and telephony. Mr. Steinberger's special purpose is to provide a number of novel constructional fcatures in order to improve the general efficiency of the insulator, and to enable him to make it of an insulating material formed under pressure or molded, or of porcelain, glass or such Hke material, and to employ tension members of a rigid Or of a flexible character, as may 1", desired. ELECTROMAGNETIC V I BRA' 0 I ]OR I.OCAL APPLICATIOX TO TII lErRON.-A. HosenIerg, London, England. This vibrator is for usc for the production and local application to the person, of continuous, rapid, and intense mechanical vibrations: of oscillations suited to the treatment of various maladies which are capable of being temporarily or permanently ameliorated by the application thereto of the mechanical vibratory massage and to the combination with the instrument of nlPans ' hereby a pulsatory elcctlie current may be passed through the body from the point of appIication thereto of the vibratory treatment and simultaneously with the latter. OJ Interest to Farllers. CU'"l'ING IACHINE.-ClaHence Shaw, .Tohns.tonville 1'. 0., Lassen Co., Cal. This invention relates marc particularly to cutters and swathers for cutting grain and the like, and the object is to provide a device for cutting down grain and the like when it is desired to harvest the same. For the purpose mentioned, use is Iade of a vehicle chassiR provided with a cutter framp having a plurality of {lttfl burs tlH'l'o(n and connpci('d with CUTTI1U MACHINE. eccentric means, secured to suitable driving means in engagement with the wheels of the \phiele, to operate the cutter bars, and a swather secured to onp pnd of the frame for dividing the cut and uncut grain and for substantially preventing any grain passing through the cutter bam after the game has been cut down. The engraving shows a plan view of the machine. Of (;eneloal Interest. .OIN'r FOR AHBOrS.-Il. R. DaYls and .. C_ Hayden. P. O. Box 342, Port Ilope, Ontario, Canada. In this case the purpose is to provide joints for arbor sections used in castings which wiII permit the sections to be readily s(parated by striking oue of the ends of tlIP arbor and breaking the wedge member hulding the sections together. Another object is to so construct the sections that they will be held together by n wedge member of com\mstihle 01 fusible material, the rigidity of whieh is lost oy the heat and by contact with the metal, therehy ]lrmitting the sections to ran apart as the casting is removed from the same. BASE ]'OR CARDBOARD FIGURES.-R G. Fraser, Philadclphia, Pa. The invention refers particularly to miniature cardboard figures in the shape of dolls and the like, and the object is to provide a forlll of base for holding the cardboard figure. Wood and metal are ordinarily employed for the purpose; aside from the expense, they lea\e much to be desired in a ppl;ing the base to the figure and the securE' holding of it in place, while the present base permits of employing a figure made from much lighter cardboard tban is really practical with a wooden 01 metallic base. Hard,ale and Tools. COMBINBD LOCK AXl I,AINING DEVTCK-}. Jadros.ta, New York, N. Y. In this instance use is made of a' bolt slidably mounted in the liher' 'end of a receptacle'_ to engage the casing thereof, actuating means mounted on the outer end of the receptacle, and a flexible connection disposed between the actuating means and the bolt so that the holt will releasably engage the casing when the actuating means are operated and the bolt heing nurmally VO"itioned 10 that the receptacle cannot be entirely withdrawn from the casing. LOCK.-RaFFaele Feola, 2 East 120th Street, New York, N. Y. A rear elevation of this lock is reproduced in the illustration, whicl shows the bolts proj(cted in dotted ontline. The lock serve,s the purposes of the ordinary padlock, which, when in pOSition prevents the staples or eye-bolts from being cut or filed. and whieh rpnrlprs difficnIt othf], unauthorized LOCK. methods of opening the lock. ' 'he bolt propel' is operated by key-controllable mechanism of the pin·tumbler type, which permits of a large number of variations in the key-controllable mechanism, and which may have the casing of difficult shapes adapted for use with different kinds of doors or other closures. Household Utilities. SASH CORD GUIDE.-.hmes 1. O'Reilly, Hayden, Ariz. By the old construction and I1wthod of attachment, it is necessary to bore two holes one-eighth of an inch deep in the window jamb and then three more completely through the frame, and finally to chisel out tl triple bore to form a mortise adapted to receive the puIlp), frame. In carrying out the present invention it is required to bore only one hole and through the jamb, and then to insert thclPin a hollow cylindcr having, interiorly, a small sash-cord pulley, and on the projecting 8nd of the cylinder the frame containing the 1 sual sash-cord pulley is hung de-tachably. the engagement being effected hy a sliding joint. lhe engraving is a vErticaI section of window frame or joint, with the attachment applied thereto. Machines and llechanical Devices. AUTOMATIC PIIOTOGIL\PIIIC PRINTING MAClI"E.-GeoHge W. Ferguson, 314 Boone-ville Street, Springfield, Mo. 'he present device is an improvement over that disclosed in the prior patent No. 957,665 granted to Mr_ Ferguson. The aim of the prpRInt invention is to pl'oYidp de vi cps for timing the exposure. These include novel means for switching on and off the circuits, and for controlling the samp. A further object is to provide a remov- able lamp holder which may be quickly removed from the device so as to replace the lamps in case they become hroken, and as quickly replaced, the replacement of the holder serving to again bring the lamps into circuit. The illustration herewith represents the main box. the end being removed for the sake of cjearness. Note.—Copies of any of these patents will be furnished by the Scientific American for ten cents each. Please state the Lame of the patentee, title of the invention, and date of this paper. It's Hard Work Like This That Makes Perfect I Every The very life of a gold pen lies in its TEMPER, in the small space between the point and the little heart-shaped opening. There it is that the necessity for experience comes in, coupled with keen judgment, in the skilful tempering of ! this most vital part of the Gold Pens in Waterman's Ideals. The difference between a Waterman's Ideal and the other I kinds of pens, is just the difference between ordinary, I unthinking, machine work and the rare combination of I active brain, experience, judgment and skilful hand. I Every pen that bears the name “ Waterman's Ideal” has I passed through the hands of a master workman. Every I pen, therefore, with this famous name is the product of I scientific knowledge and skilled labor. I There is a volume of reasons for pen superiority. I ASK YOUR DEAE CATALOGUE ON REQUEST L. E. Waterman CO., 173 Broadway, New York I Alcohol 1550-The Cost of Manufacturing Denatur-ized Alcohol in Germany and German Its Manufacture MC oentshulo-Gdsenoefr aDl eFnr aantkurHiz.a Mtiaosnona. re discussed by 1596-The Use, Cost and Efficiency of Alco- Its Denaturization ehxopllaainse da b yF Hue. lD fi eodreriGc has s. mEannygicnleeasr adrieagraabml y accompany the teJ. The article considers the fuel Fj W I • • I f T value a nd physical pr operties of alcoh ol. an d gives Its Industrial Use details of thealcoh ol engine, w h e rever t h ey m ay be different from those of a gasoline or crude oil motor. 1581-The Production of Industrial Alcohol and its Use in Explosive Motors are treated at length. valuable statistics being given of the cost of manufacturing alcohol from farm products and using it in engines. 1599- French Methods of Denaturization. A good article. 1603, 1604 and 1605-The most complete treatise Triii *1*1 on the Modern Manufacture of Alcohol, Valuable articles in the explaining thoroughly the chemical principles which underlie the process without too many wearisome ^rientiiic A merican technical phra ses. and describing and illustrating a II le ^ •** ''**-'' l^tl'« the appa ratus req uired in an alcoho l plant. T h e Sc ,-.-./ / article is by L. Baudry de Saunier. the well-known kDUf)f)LCTTlent French a uth ority. 1607. 1608 and 1609-A Digest of the Rules JTT Send for our 1910 and Regulation* th derwhich the U. S. Internal V 11 SuDDlement catalog Kevenue will permit me. manufacture and denatur- ^41 r p j j izalon of lx free alcohoL JJ tree to any address ,-,».” «<•* a < i »t * »i f J 1634 and 1635-A comparison of the Use of Alco- hol and Gasoline in Farm Engines by Prof. Charles E. Lucke and S. M. Woodward. 1636 and 1637-The Manufacture, Denaturing and the Technical and Chemical U tilization of Alcohol is ably discussed by M. Klar and F. H. Meyer. both experts in the chemistry and distillation of alcohoL Illustrations of stills and plants accompany the text. 1611 and 1612-The Sources of Industrial Alcohol. that is the Farm Products from which alcohol is distilled. are enumerated by Dr. H. W. Wiley, and their relative alcohol content compared. 1627 and 1628 -The Distillation and Rectification of Alcohol is the title of a splendid article by the late Max Maercker. the greatest Order from your newsdealer authority on Alcohol. Diagrams of the various , , ,.. , type. of stills in common use are used as illustrations. or from the publishers 1613-The Uses of Industrial Alcohol in the - - — -, A rts and in th e Home are discussed. Munn&Company, Inc. Any single ruirnper of the Sappofnt will be sent f r I 361 Broadway, New York iaSB^ISo^ above lIted :16 SCIENTIFIC AMERICAN September \, I P II IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY South Kensington. LOIdon, S. W. Including: as integral parts: THE ROYAL COLLEGE OF SCIENCE, THE ROYAL SCHOOL OF MINES THE CITY AND GUILDS ( ENGINEERING ) COLLEGE. VisitorHIS MAJESTY THE KING. Chairman- The Most Hon. The Marquess of Crewe, K. G. C ourses of instruction and opp ortunities for Advanced Stu dy a - f) Research are prod ded in the f ollo wing branches of : ,-jtnlt, viz:"- Royal College oF Science. Mathematics and Mechanics Professor Perry, F. R. S. Physics--Professor Callendar, F. R. S. Professor The Hon. R. J. Strutt. F. R. s. Chemistry (including Chemical Technology) - Professor Sir Edward Thorpe, F. R. S. Botany—Professor Falmer, F. R. S. Plant Physiology and Pathology-Professor Blackman. 'fhnology of Woods and Fb res- Pro fess o r GROOM. Zoology -Professor Sedgwick, F. R. S. Geology-Professor Watts. F. R. S. Royal School oF Mines. Mining -Professor Cox Metallurgy- Professor CarlylB Oity and Guilds (Engineering) College. Civil and Mechanical Engineering - Professor Dalby Electrical Engineering—Professor MatheH, F. R. S. Prospectus with all particulars sent free on application to the Secretary; and copies of the College Calendar may be seen on application at the office of this paper. Two-Year Practical Course in Industrial Chemistry Complete equipment for thorough practical training in all branches of Industrial and Technical Chemistry. The course is strengthened by the study of Mechanics. Electricity, Drawing and Shop Work. Fully equipped factory plants in TANNING, MANUFACTURE OF PAINT, SOAP AND CHEMICALS, DYEING AND BLEACHING New courses in Tanning and Leather Chemistry. Low tuition. Write for catalog. (Dept. S) Brooklyn, N. Y. Pratt Institute j u /uded J85f. AffLiated with, University of Chtcago. WAYLAND ACADEMY In the healLhful hill country of Southern “Viscollsin, near brge lake, 150 miles from Chicago. A tho r ough co-educ:iio U l school with iuriividual durmitorks. Prepares for all colleges or b f 1iutss. '20-acre campus. 5 m o de rn Lu,ldlllgS. GymnSEiUlIl, athletic field with half mHt tnwk. L:;ee endowment makes totae expense foJ ro::, board, tuition, athletits, etc., tly #»J. Special courses ill piano, YOlsl music, Yiolin ; (Iocution, steuography. One teacher for . very ten students. Our :1U lS to f?t the educatIOn to the studfnt. 8e1[(1 for cnt:tlo: today. JJrincJpul KDXV18 P. 15KOWN, Benver HnRl, Wis., 1Iox UK Sensitive Laboratory Balance By N. MONROE HOPKINS.-This “ built-up laboratory balance will weigh up to one pound and will turn with a quarter of a postage stamp_ The balance can be made by any amateur skilled in the use of tools, and it will work as well as a $125 halance. The article is accompanied by detailed working drawings showing various stages of the work. This article is contained in Scientific American Supplement, No. 1184. Price 10 cents. For sale by Munn&Co., Inc., 361 Broadway, New York City, or any bookseller or newsdealer_ YOUR INVENTION Mad e and. Mark e te d WE are looking for a reliable household, fa,m, automobile, or novelty article which WIll meet a steady demand. If you m ave such an artlCle It WIll pay you well to get into immediate touch with us. Manufacturing at minimum cost coupled with effective selling me SI hods make our proposition exceptional I y desirable. EIther contract or generous royalties for the right man. We must have full details in your first letter. ROYAL METAL MFG. CO.