Journal and Patent Literature. ATEST ST SPECIIWJATIONB inns bc obtnined by post by rcniittinn ns follows :-B?iglinh.--Bd: cncli t o tho Coinptrollcr of tlic Pntent OMce, W. Templo Prnnks, ICsq., Soutlinrnpton Buildings, Chnnccry Lnne, utiilcd Skles.-le onch to t~i o Sccretnry of t~i o Society %rcnd.-l Ir. 25 ' c. onch to' Bclln ct Cic Geminri.-l iiinrli oncli (\Gitli Snll piirt.iciil&) to Xniserlicli Pntontnmt, llerlin, Gorznnny. Lohon W.C. 50 lliic des iirnncs Boiirgoois, Pnrh (Yo.).

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... PLANT ; MACHINERY. PnTxx.*rs. 'J'ii~*Altt~ring friinlrs, d , covcretl with siiitnblc filter cloth, nrc iigidly fisctI cit~icr singly or in gronps to rntIinI nrl11s, c, projccting froni II. ry!+iting hollow shaft so tliut tlic Altering frtiiiies urc tlieniscl\~cs rntlially disposed. ~\ s tlic slinft rotiites, the frnnics cntcr tho trougli, u, plnccd bclow, nntl into wliicli tlic liqiiid to bc filtcrecl is fed, in nn nliiioet liorizoiitnl porition, pnss tliroug1i tho liqiiid iiiitl e~ncrgo nlso in it liorirontnl position. During 1110 timu fliiit tlic frnnics iirc ininiertied tlioir interiors nrc coniicctctl tliroiigli tho Iiollow slinft to IL vuciiiini piniip \rliicli drnws of1 tho filtcrcd liquitl. A s tlic frmics riso out of tlic liquid, tlic V~~U I I I I I I I is nutoinuticiilly cut 011 and n.lit!ii they itre verticully over ii trougli, q, plnccd jufit iihovc tho nsis, conipressed air is tiupplictl tliroiigli iinotliar chniiiicl i n tlic slinft niid blo\vs the cnlics 011, hing u~sistcd by n strmni of w t c r dircctctl ngninst tlie faces of tho plates froIll t,ho Iiudointccl p i p , ?).-I\'. TI. c'. Solitla froirh liqrtids ; ilfaclrirre /vr colicclirry --. 1-1. i'wlicr, Assignor to lmlmvcd i'nper Jlncliiiicry Co., xnslllin, X.11. U.S. i'nt. 074,!)89, Nov. s, 11)IO. 'hk: iiiistnrc of fiolitls iind liquids is Ictl into n tlruin, tl~c alicll of wliicli is ~nntlo of nintcrinl pcrrions to liqiiitls but iiiipcrvioiis to solitla ~i n d wliicli is rotntctl 1iorizi)ritnlly i n n troiigli. Il'lio solitls nre curried Ioiintl Iiy the ~l i e l l of the tlriiiii 11s it is rotntctl iind dropped into n cciitriilly iliaposed troiigli provided wit11 ii scro\v conveying woriii cintl liitiintccl just u b o w tho inis of the t l r i i n i ; tlicy nrt! tliscliiirgctl ,from the end of tho troiigli by the ticrc~v. Scvcriil suporposcetl t r(iiig11s iintl drii ins iirc ooniliinctl rilltl \\died in scricu. Il'lic liqiiitl is difihirgd frolll tl1c criltre or ~~1 1 otitcr trO~~gh.--w, 11. (4. v U 1 X U r E ( I J d gOW?S 2Oilll l k~l l i h f l d /UdlCll U d J d ( ( J / c [ J S ; App~iru/i(s /or corrliicliriy 01 -, Lnnos. I?. lJritclinril, Ilitytoli, h D I S I I~ plnto hiving its w i w s sitlo dowtt\viil,tl* is iiiiiticrsctl jirsL bclluiv t Iio siirfuco of tho liqiiitl ill ccioll srgiiiciit or clenicnt of the iippurntiia u i t l tlie gns \v]~iali .I&rig. l'nt. 25,21)9, Sov. 3, I!)OD. s dcli\~crcd lielow tlic cciitrc of the pliite is conipollccl to iilic n tortiitmi 1 1~1 1 1 towiirtls tlic pcriplicry by nri nrrnngc-Niiciit of spiral nntl zig-zng biinlcs prt~jding from tho intlcr sitlc.-I\'. :I-I. C!. 1. Crosslu~', I\liincl~cstc~~, iititl J. i\tl;i1ifi~Jli, S t~c l i l i~r t . LOIO. J S I I~. l'lit. :HiVO, Pub. 13, TJIX cliiiin js for irii iniprovctl 1iiiiiip, opcriitctl by ospIo~ioi~, of tliu typo tleljcribctl in I Iiinipliroy's 1hg. i'irt. 20,73(i of 100ti. J L consists of nii esplosioti clin~nbci* provitlctl wit11 illlet iind oiitlot viilvcs nnd nil exploding tlcv~cc, coniicotctl by a short pipe or iiiiiiii with 1111 nir-rcssol nncl by ii long p i p or ~niiiii*witli tho tloliwry poiiit ; il ia ulso coniicctcd by n vulvo with ii supply of tho isiitor to be pni1)cd. b'i'liu proportioiis of tho ehiinibcrs and ~i i i i i i i~ iiro so iidjiistctl t]~irt four cycletl ocour in tho osplosioii chumlur, tho tilinrt muin und tliu air ~otisol, for two in tliu long dulivury Vol. SXIX., KO. 2.1.) CL I~A . -F U~I J ; GAS; JSJNERAL'OSLS & \VAXES. ! niniii. On nn cqlotiioii tnking plncc, tlic w t e r is drivcu I [[,i.-FUEL, ; GAS ; MINERAL OILS.. AND nloiig tlic two innins but the velocity in tlic short innin is 1 yrcntcr ntid the air in the air-vessel is coinliccsscd niicl 1447 . ___ . ~ . ~ ____________ WAXES. wnter Eontiiiiics to inore oui,wnrds nntI clrnivs nftcr it tlic wntcr from tlic explosion chn~nbcr, causing n fresh charge !if *ns to enter t h~O l l g h the inlet. vnlic. A t f.lic xnnic tiino it tfrnys.in n fresih siippIy i i f wnter tliroiigli.t\ic wntcr inlet, vnl\~c. Aftor ic ccrtnin time the oirtwiirrl niotion of tllc wntcr in the long innin is brougl~t to n stnndntill by the Iirntl ngtiinst it and it returns, closing tlic wntcr inlet vnlrc nntl coniprcssing the clinrgc of gns in thc csplorion rhniiilicr riwly for tlic nest explosion.-\\'. 11. C. SuJrErrous pro'lucts Iltlvc rcccntl\. been put upon tlw ' iiiirrkct ns siiliititutcs for ~i c t r o~~i i n spirit (petrol) for motor cnrs, nntl nrc Inrgcly iiscd, cspecinlly in l'nris, , owing to their lower price tliie to tliffcrciiccs in tlic ocfroi i duties. 'J'hcy consist of niixturcs in rnrying proportioii~ ( i f benzene with petrolcunr spirit or of piire bc~rsunc. TIw , xi'. gr. of tlicsc inisturw (0.750 to 0.7ti0) nlfords nn iiidicn-, Lion of the prcscncc of bcnreiic (sp. gr. 0.880). According ' to Giroir tlio types of pctrolcuin spirit siipplietl to motorists liiirc trpprosiinntcly t.110 follo\ving chnrnctcrist~ics :-Disliiling iipptrrutus : I'erlictrl -for the didillutioti o/ tar, oil, clc. R. Bnrlcn. Gcr. l'nt. 228,207, r\pril 17, . 1009. 14.19. Val. SSIS., NO. 24.1 CL IIB.--DESTRUGTIVE ,DISTILLATION ; HEATING ; LIGHTING. IIB.-DESTRUCTIVE DISTILLATION ; HEATING ; LIGHTING. PATESTS. Incr~~ccIc~eit~g bodirip /or u.vc in incuntIescetrt JIUN ii!,h/itiy ; dluiiiifucfare of -. JI. ron Unrnh, 13crlin. Eng. Pnt. 30,148, Dee. 24, 1909. As incanclcsccnt matcrinl is prepared by mising suit,nblc librcs, which hnvc been inipregnntctl witli " lighting snlts," with organic or inorgnnic snlta of thorium, cerium, erbium, zirconium, tliallinni, or their doublc SRltS, or n mixtnrc of thesc snlts with nn organic bindinw snbstnnce, the materinl )icing given tlic desiretl form, 9riec1, nnd snbjcctcd to sufficient lient to destroy the organic substnncc. Colloids niny bo iisctl ns tlie binding snbstnnce with tlic nddition of siignr, glycerin, water, ctc., nnd irhilc in tlic plnstic stntc the mntcrinl mny be forced through fine lioles to obtnin i.hrcntls of 2 mm. clinmcter. If magnesium snlts arc nddcd to the mixtilrc the orgnnic binding snhstancc niny be tlisprnscd with.-H. 1-1. Filunieirlu /or w e i s itee/nllic f i l u~i i c n t yloeu.luicipY ; P r o c w /or cleectrbonisiny -. \\'olfrnni Lnmpcn Altt.-Ccs., Angnbnrg, Cerinnny. Eng. Pnt.. 14,l 16, Junc 10, 1910. .\Iwrii.\sE n t u few inillimctrcs 1)reHsiire is ndinittctl to the I)db containing tlio filament. An electric current is then pnssctl nnd the filnment rnisctl to incnndescence, WIICII the cnrbon in the Iilimcnt conibines with tlic mctlinnc forming n gnsroiis componntl riclicr in cnrbon which is romorrtl :I t c / i~r~c~~y~~t t i i~l i~r e~ c i d uci/krc~p!~riiciiiloiies ; l'rocexs for Bnrbenftibr. Corm. l?. lhycr rind Co. Addition to Crr. ;\STIIIIA~~PIII~IIIIISBS nnd aiitlirnjiyriiiiidotics nrc obtninerl lip (.lie nction of ninino?in on a-niiiirioniitlirnq~~inoncs 01 their tlcrirntivcs, the nnnno groiip of wliicli is ml)st.itiitrtl by ncitlic gronps, thns :-p r e p m n g -.