Volume 08 (1864) (474 pages)

The Mining wn Scientific Press, 13 eatent Ofice Department. Recent American Patents. (Under the above head we shall gtve a weekly tet of all such pats ents fasued, as may bo of nny apeetal titerest ; partleularly to forntons, All patents, of wlintever nature, lasued to residents of the Pacific Const will be ineluded In the ist} The following nre some of the most Importnnt Inventions and lm: provements for which Letters Fateut have been reecutly {ssucd from the United States Patent Office :— LATE CALIFORNIA DCVENTIONS, Fire-Proor Paint. —G. W. Powell, of Chinese Canmip, Gal, hay xccnred Letters Patent for a Compound for maklug Ftro Prouf Paint. Iuerovep Amatcamator.— This inyention copelats of an hiprovement In that classof Amalgaimatora In while: the Anely putvertzed ure ts Intlinately mixed with the mereury by tho uction of a rotary muller a sultable pan. The inventlon conslsts tn Impnrting to the mniters, which are uttached to the urmaextendlug from a eommon ecntral arbor, a evmpound rotary, ora sun and planet motian, by the action of a central statiouary-toothed rim on plitons scented tofke ales of the muliers In such a manner thnt by the raph! rotary motion of each muller around Its Individual axtsy, that portlon of the ore which muy be exposed to the actlon of sald muller, ls bronght Into Lntlmate contnet with the mereury, aud by the common rutary motion of the several mullers arotnd the central arbors, the cntlre contents of the pan are suceesalyoly und repeated]y exposed to the action of each muller, The Invention contalps a sct screw on ono skle and a hinge on the oppoalte slde of the pan, by which Its Inclinutlon can be adjusted at pleasure. Thomas Mansbrow, of Sacramento, Cul, ls ike Inventor, Bons Laxcr.—An improved bomb lance, having the perfornted Are pruof, or non-combustible dlaphrugm, and a wooden or combustible fuse plug placed within it, and arranged and combined with the fuse und the guard ‘chamber thercof, substantlally as described lo the erplleadon: Oliver Allen, of San Fran. elxeo, Cal., Inventor. Macmixe ror Grrxpinc ORES anD AMAUGAMATInc THK Mxetars.—The objcet of this Inventlon Ig to obtain a device by which gold and silyer ore, redneed to a pulp In a stamp mill, Tiny be further reduced, and the metal It contains thouroughly amalsamated. We are unable, witbout drawlugs, io give any IntelHglbie description of this Invention. John 0. Randall, Canon Clty, Colorado Terrltory:, ts the Inventor. MISCELLANEOUS PATEERTS, Loor Cnrck ror Srwine Macnixgs.— The object of thla Invention fs to obtain a loop cheek which will answer equally well for ail kinds of work, and which ean be applied, at small expense, to any machine now In nse. It consists In a check composed of a finoth of steel, or other metal, attached to the bobbin ring, tu such positlon that Its polnt Is almost directly In Ine with the needle’s motion, and arranged In such a manner as to allow the loop to pass off na backward dircetion. J. B. Seer, of Chicago, is tbe inventor. Newsparer Fi.e.— This invention consists in making one or both of the rods largest tn the middle, and fapering gradually tewnrd oue or both ends, so that when they are clasped toxether at the ends, they aet as springs on the paper between them. J. I. Atrooler, Providenee, Is the Inventor. Travevinc Invarip Cuarr, an improvement on fimilar conveniences. The ebair may he readily placed at any inellnation or extenston destred. The chalr may he entlrely propelled and gnided by un urrangement of driving wheels. Charles L. Bander, Cleveland, Ohio. An Invatip Bepsteap is enumerated among patents issued for week ending Oct. 27. A decided Improvement Is elaiined for thls Inventlon over any heretofore made, In auxiliary head and foot boards, the mode of making and applying the sacking, and operating the bedstead, generally, and In the partleolar comhination{fof the tippIng hooks, thelr mechanical equiyalents. Moses Jolinson, Colebrook, N. TE. é Snirt Boson.—J. A. Pease, of New York city, clalms the Invention of a shirt bosom, of water proof cnamel, which may he ensily kept in place by springs, ete. An inventlon disastrous to the business of a large number of the “celestlal” reskleuts of this and other California eitics. Water Wueet.—tThis invention consists in a novel manner of applying the water to the wheel, whereby the: the water ls made to strike cach and every bueket In a solid, unbro Ken sheet or column over the entlro cireumferenee of the wheel and to act with nearly equai foree whether the gate be wholly or parilally open. The Mining and Scientific Press Patent Agency. OFFICE, 57, GOVERNMENT HOUSE, SAN FRANCISCO, Information About Obtaining Patents, The Patent Law Amendment Act, of March 4th 1862, and Mareh 3d 1863, now in force, introduces several lmportant changes In our Patent System. The general practice of the Patent Offiec, however, In regard tothe exainination and issue of Letters Patent for new lnventlons, remains nearly the same as beretofore. The amendment of 3d March, 1863, provides, In seetlon 3, that every patent shall be dated as of a day not later than six months after the tlnie at which it was passed and allowed, and nottee ihereof sent to the applleant or his agent, Andit the final fee for such patent be Not pald within the said six months, the patent shall be witheld, and the invention thereln described shall become publie property as against the applicant therefor: Provided, Thut in all eases where pateuts have becn allowed previous to the passage of this act, the sald six mouths shall be reekoned from the date of such passage. The first question, therefore, that presents Itself to the Inventor, who desires to procure a patent, 1s: Can Lobtaina patent? AposItive answer to thts qnestton is ouly to be had by presenting a formal application for patent to the Government, embracing a petition, spec. ifenilon, model, duplicate, drawings, and tho payment of the pre . scribed official fees. Astdo (roi these steps, all thre liirente entor can do ls, to enbinit hls plans to persous experienced In the bualucss of udtatnlug patents, gnd poltelt thelr opinton and adviec. I¢ the parties consulted are honorable wert, the inventor umy safety condde hts {dens to thein, xnd they will hiferin bias whether or not lits tnvention Iz probably patentable. Those wire have made lnvonttens and desire to consul with us respocting the sume, are cordially livited ta da so, We shall be huppy to see thein In person at our olfive, or to adyise them by inall, or through the Mining anp Sec1aatinic Farsy, Inatl casesthey may expeet from us an honest oplulon, For these consnitatlons, opinion und wiviec, we make no charge. A pen-and-Ink sketeh, nnd descrip" tlon of the Invertlon should be sent, together with astamptorreiurn OSS, Welte plaln ; do not nse penell or pale Ink ; be briet. ber that alt Itted to our enre, and all consul. fjatlons, ure kept by 18 seeret, and strietly contidentlal. Preliminary Examinations. Tn some cases tt may be adylsuble as a mensure of prudence to orderapreliminury exnmtnation. Thts consists of n special seareh, wade at the U. S, Patent Ofice, Washilngten, throagh the medium of our associate la that elty, fo useertaln whether among all the patents and models there stored, any Invention ean be found whieh 1s simlTur tn eharucter to that of the HL On the letlon of this special search we send a written report to the purty concerned, with sultable adviec. Our charge for this servlee, eluding the report, ls ten dollars. This seareh, though It Invelves the oxpense Just named, wlth usualiy prove satisfactory. If yhe same deviee hus been beture patented, the time and expense of constructing models, preparing dociments, ete., will in most eases be saved ; If the Invention has been tn part patented, the applleant will be cnabla to mod” Ify hls elaima and expectations aceurdligly. Many other obylous advantages attending the Preliminary Exalnation ; although the strictest searel docx not always enable the applicant to know posltively whether a patent ean be had. Applleations for patents are often rejected beeause ihe Examining officer finds a deser{ption of the alleged Invention in some foreign pubiieation ; ; Or some other persou has bean prevlonsly rejected on au analagons device ;* or some other Invention for a similar purpose, but partially resenibics the applicant’: In its constructlon; or the Government makes an unjust or nneommon deelsion. Aguinst none of these contingencies does the Prellminary Examination provide ; it will, however, generally Inform fhe applleant whether un Improvement slintlar io hls and used for the same purpose has ever been patented or not In thla country. Persons desiring ihe Prelimlnury examination are requesied to renilt tho fee ($10), aud furnish us wiih a skeich and description of the Invention. Caveats, A Caveat Is a confidentlal communication made to the Patent Oltice, and Is therefore filed within Its secret arehives. The privllege secured under a caveat is, that It entities the caveaior io recelve notlec, for a perlod of one ycar, of any applicailon for a patent subsequently Med, aud which Is adjudged to be novel, and is Ukvly to interfere with the Invenilon deseribed In jhe caveat, and the caveator Is then required to compleie his appileation for a patent within three months from the date of sald notlee. Caveat papers slonld be very carefully prepared. Our tee for the servlee varies from $10 to $20. The Government fee under the new law is reduced to ten dollars ; and this snm docs not apply, as lierctofore, as part of the feo on presenting an application for a patent. Taventors will oftimies find 1t very Important to take advantage of the caveat system—tbe expense under the law being comparatively small. To enable us to prepare eavcat paper, we only requiro a sketch and deseription of ihe luvention ; no model being neecssary. Expense of Applying for a Patent, Rejections, eto. Under ihe uew law, tho Government fee, on fillng an applicailon for a patent, ls fittcen dollars ; and if the patent is allowed, iwenty dollars additlonal is required. If rejected, the first fee of fifteen dollars is all thai is demanded. Engllss, French, Austrian, Prussian, Spanish, and inventors of every nationallty, may now obtain pat. ents in the United States upon the same terms as our own eltlzcns. The only discrimination niide 1s agalnst subjects of governments that diserimInate against the Inhabttants of the United States, To the foregoing official fees must be added the Atiorney's fees for preparing the various documents and drawings. Onur charge for preparing a ense, presenting it te the Goverment, and attending to all business connected with it, until a deelslon is given, Is from $20 to $10. If the patent is granted no further agency expenses ensues.— If the application is rejected we ennse a thorough Investigatian to be made into the reasons presented to the Commissioner for refusing the patent. In making this exaintnatlon, we have excess to nil the drawings, models, books and specifications elted in referenee, and we report the result as carly a4 possible to onr elient. For thls servieo we make no charge. If the rejection proves to be an unjust one—whieh sometimes happens—It can generally be reversed, and the patent ohtained by contesting the ease. For this prosecution we charge a fee proportionate to the extra labor involved, payable only on the Ixsno of the patent; but our demand will be reasonable and satisfactory to our ellents, and will be arranged beforehand by speclal agreement. The system adopted: by us works well, gives general satisfaction and presents to all applicants, rich or poor, an equal opportunity ot haying thelr patent cases prepared, conducted and prosceuted in the best manner, by experlenced attorney's, upon the most moderate terms. Inventors who have rejceted eases, prepared either by them selves, or fur then by other agents, and desire to ascertaln their prospects of suecess by further efforts, are invited to avail themselves of our unequalled faelitties in scenring favorable results. We have heen sueeessful In securing Leticrs Patent In many enses of such a matter. ¢ Our terms for sneh cases are very moderate. Models, Remittances, atc. The laws requires that the Inveutor shall, In all cases, furnish a model, which must not exceed twelve Inches in any of its dimentlons; itsiould be neatly made, of hard wood or metal, or both, varnished or painted ; the name of the iny entor should be engraved or painted on it conspicuously. When the Invention consists of an improvement on some known Machine, a full working model of the whole will not be neeessary It should be sufflelentlyperfect, however, to show, with elearness, the nature and operation of the invention. Aa soon as the model 13 ready, It should be earefully boxed and shipped by express or oiherwise, to our address, namely: DEWEY & Co., Mlulng and Seicntifie Press, rooms 56 and 57, Goverument House, corner of Sansome and Washiuyton Streets, San Francisco, Cal. Prepay expenses and send express receipt to us by mail. Simultaneously with the model, the Inventor should send us the firat installment of the Goyermmeut fee, fifteen dollars, The Bae? may be forwianted either by express tt the me or by mall.— Theo safest wuy to remit ls by dratt on San Franetsco, payable to our order. Always send a letter with the model, aad also the rentiittanee Statlng the name and uddress of the sender. A full description shonld alse be sent with the model, embodying all the Ideas of the luventor respecting the Improvement. Ou the recelpt of the model und Government fce, the ease bs duly exlstered upon our bouks, and the application preeecded wlth ag fast as powlble, When the documents are ready we send them to the Inventor by mall, tor hl examinatlon, siguiture and aflidavit, with u inter of instruction, ete. Our fee for preparing tho ease ts then due, nnd will be called for, The case will then be presented to tho Patent Office, and ns soon as the puteni ly ordered to be Issued, the applleant will be notified to remit the last installment of the Government fee, namely, twenty dollars. Inventors who do bustness with us will be nottfled of the siate of thelr application 1 the Putent Otec, when tt is possible for us to do su. We do uot require the persunal attendance of the Inventor, unleas it ls one of great complication ; the business cau be well doue by correspondeuce. Wher the invention consists of a new articlo of manufacture, or anew coniposition, samples of the separate Ingredients, suM@elent to iuke the experlinent, aud also of the mnuufactured article lisel€ Must be furnished. The average thae required to procnre a patent, when the ease ta eondueted at our agency, ls tiiree montis. We frequently get them through In less time ; butt In oflier eases, owlny to delay ou the part of ofielals, the period ly suinctiines extended to four or five months, and even more. We make o special polut to forward our cases as rapldly as possibile. Retarn of Models. Under the new law, If the applleants ease has been rejecied he ts entitled to withdraw hls model froin the Puient Onicc. This Inw appiles to alt past rejeeied cases, and If parties wish io obtaln their models through us, they can do so at a small expense Application for Patents, Designs, Trads-Marks, Labells, eto, Under the new law patents may be taken out for any new form of any article, also for tools, patterns, castings, machinc-framecs, stoveplutes, borders, tringes, all new designs for printing, weaving or stamping upon silks, ealleoes, carpets, oll-cloih, prints, paper-hangings, and other articles. Trade-marks, labels, envelopes, boxes and bottles tor goods, niay also be patented ; likewise ail works of art, Inelndlug prints, paintings, busts, statues, bas-rellef, or compositions In alto, or basso rcelievo, new dies, wnpressions, ornaincnts to be placed upon any artlele of manufucture, architectural work, ete. Our facilities for ihe prompt preparation and securing of paicute are of the most extensive character and our charges ara very moderate. Patent Office Fees, and How Payable. Nearly all the fees payable to the Patent Office are posltlvely required by law to be paid in advance. For the sake of uniformity and convenlence, ihe remalning fees will be required to be paid In the same manner; that Is to say, before tbe labor is performed tor which they are to be reecived In payment. The following is the tariff of fees established by law: On every applleation for a design, for 3 years and six montbs $10 00 On every applicaiion for a design, for seven years. 5 00 On every application for a design, for fourteen year: On every eaveat. On every Saulonaian fora putent. On issuing each original patent. On fling a disclalmer On cvery applicatton for a re-tssuc On every additionn! patent granted on a re-issue On every application for un extension. On the grant of every extension. On appeal to tho Commissioner from Examiners-. “Atte chicf. On every appeal to the Judges of Circuit Court, D. C. . Infringements, The manufxeiure, sale, or use of a putented article, without con. sent of the owner of the patent, is an intringenient, and subjects tho intringer, by injunction from the Court, to an arrest of or prohibition from the employment of hls machinery, shop, works, factory and men in production of the artiele. In addition to injnnetion the infrtnger Is Mable to be mulehed in treble the amount of damages awarded hy the jury. The maker, the workinan, the scller, and the purehaser, If a user, are all linblo either collectively, or Individually, {lavIng access to all the patents, models, public records, drawings ‘and olher documents periaining to the Patent Office, we. are prepared to make ec: ons and give oplni upon alt infringe. ment questions, advise as to the seope and ground covered by pat. ents, and dircet with vigor any legal proceedings therewlth con: nected. Our charge will be moderate, and proportionate to the labor Involved. Appeals. I rejceted and other eases, the new law provides for an appeal fron. the Examiner-In-chief to the Commisstoner In person, ‘on tho payment of a fee of twenty dollars. <A further appeal may be taken froin the deetslon of the C. i to the U. S. Court, of the Distrlet of Columbia. These appeats are heard by any of the Judges before whom the applleant cicets to bring the ense. NoJury. All the papors, models, ete., are sent by the Commissioner to the Judge, who then reviews tite case, and elther sustalns or reverses the ComMhissloner’s decislon, The party taking the appeal pays an additional fee of tweniy-fve dollars. The Judge appolutsa day of hearing. The applicant ean appear in person or by counsel to state his ease and file awritten argument. Five days are allowed the opponent to pnt In an answer, and a similar perlod to the appelant for a closing reply. Many important cases are brought before the Judges on appeal, and the dceisions of the Commissioner are not unfrequently reversed, We havo bad snecesstul experienee In econdueting these appeals, and our services aro rendered on moderate terns. DEWEY & CO., Agents, Mining and Selentifie Press Office, Government House, corner Sansome and Washington strects, San Franclsco. Patent Clainis.—We will furnish, on appleatlon, the elnim of any invention thut has been patented within the last fourteen years. The namo of ihe patentee, date of patent, when known, and two dollars for copying, should be sent. Back Naumbers.—We have a limited number of past volumes of the Press ou hand, whicii will be sold, neatly bound, at reasonable rutes. A portion of the back numbers of the paper can be had by the single copy.

The Mining wn Scientific Press, 13 eatent Ofice Department. Recent American Patents. (Under the above head we shall gtve a weekly tet of all such pats ents fasued, as may bo of nny apeetal titerest ; partleularly to forntons, All patents, of wlintever nature, lasued to residents of the Pacific Const will be ineluded In the ist} The following nre some of the most Importnnt Inventions and lm: provements for which Letters Fateut have been reecutly {ssucd from the United States Patent Office :— LATE CALIFORNIA DCVENTIONS, Fire-Proor Paint. —G. W. Powell, of Chinese Canmip, Gal, hay xccnred Letters Patent for a Compound for maklug Ftro Prouf Paint. Iuerovep Amatcamator.— This inyention copelats of an hiprovement In that classof Amalgaimatora In while: the Anely putvertzed ure ts Intlinately mixed with the mereury by tho uction of a rotary muller a sultable pan. The inventlon conslsts tn Impnrting to the mniters, which are uttached to the urmaextendlug from a eommon ecntral arbor, a evmpound rotary, ora sun and planet motian, by the action of a central statiouary-toothed rim on plitons scented tofke ales of the muliers In such a manner thnt by the raph! rotary motion of each muller around Its Individual axtsy, that portlon of the ore which muy be exposed to the actlon of sald muller, ls bronght Into Lntlmate contnet with the mereury, aud by the common rutary motion of the several mullers arotnd the central arbors, the cntlre contents of the pan are suceesalyoly und repeated]y exposed to the action of each muller, The Invention contalps a sct screw on ono skle and a hinge on the oppoalte slde of the pan, by which Its Inclinutlon can be adjusted at pleasure. Thomas Mansbrow, of Sacramento, Cul, ls ike Inventor, Bons Laxcr.—An improved bomb lance, having the perfornted Are pruof, or non-combustible dlaphrugm, and a wooden or combustible fuse plug placed within it, and arranged and combined with the fuse und the guard ‘chamber thercof, substantlally as described lo the erplleadon: Oliver Allen, of San Fran. elxeo, Cal., Inventor. Macmixe ror Grrxpinc ORES anD AMAUGAMATInc THK Mxetars.—The objcet of this Inventlon Ig to obtain a device by which gold and silyer ore, redneed to a pulp In a stamp mill, Tiny be further reduced, and the metal It contains thouroughly amalsamated. We are unable, witbout drawlugs, io give any IntelHglbie description of this Invention. John 0. Randall, Canon Clty, Colorado Terrltory:, ts the Inventor. MISCELLANEOUS PATEERTS, Loor Cnrck ror Srwine Macnixgs.— The object of thla Invention fs to obtain a loop cheek which will answer equally well for ail kinds of work, and which ean be applied, at small expense, to any machine now In nse. It consists In a check composed of a finoth of steel, or other metal, attached to the bobbin ring, tu such positlon that Its polnt Is almost directly In Ine with the needle’s motion, and arranged In such a manner as to allow the loop to pass off na backward dircetion. J. B. Seer, of Chicago, is tbe inventor. Newsparer Fi.e.— This invention consists in making one or both of the rods largest tn the middle, and fapering gradually tewnrd oue or both ends, so that when they are clasped toxether at the ends, they aet as springs on the paper between them. J. I. Atrooler, Providenee, Is the Inventor. Travevinc Invarip Cuarr, an improvement on fimilar conveniences. The ebair may he readily placed at any inellnation or extenston destred. The chalr may he entlrely propelled and gnided by un urrangement of driving wheels. Charles L. Bander, Cleveland, Ohio. An Invatip Bepsteap is enumerated among patents issued for week ending Oct. 27. A decided Improvement Is elaiined for thls Inventlon over any heretofore made, In auxiliary head and foot boards, the mode of making and applying the sacking, and operating the bedstead, generally, and In the partleolar comhination{fof the tippIng hooks, thelr mechanical equiyalents. Moses Jolinson, Colebrook, N. TE. é Snirt Boson.—J. A. Pease, of New York city, clalms the Invention of a shirt bosom, of water proof cnamel, which may he ensily kept in place by springs, ete. An inventlon disastrous to the business of a large number of the “celestlal” reskleuts of this and other California eitics. Water Wueet.—tThis invention consists in a novel manner of applying the water to the wheel, whereby the: the water ls made to strike cach and every bueket In a solid, unbro Ken sheet or column over the entlro cireumferenee of the wheel and to act with nearly equai foree whether the gate be wholly or parilally open. The Mining and Scientific Press Patent Agency. OFFICE, 57, GOVERNMENT HOUSE, SAN FRANCISCO, Information About Obtaining Patents, The Patent Law Amendment Act, of March 4th 1862, and Mareh 3d 1863, now in force, introduces several lmportant changes In our Patent System. The general practice of the Patent Offiec, however, In regard tothe exainination and issue of Letters Patent for new lnventlons, remains nearly the same as beretofore. The amendment of 3d March, 1863, provides, In seetlon 3, that every patent shall be dated as of a day not later than six months after the tlnie at which it was passed and allowed, and nottee ihereof sent to the applleant or his agent, Andit the final fee for such patent be Not pald within the said six months, the patent shall be witheld, and the invention thereln described shall become publie property as against the applicant therefor: Provided, Thut in all eases where pateuts have becn allowed previous to the passage of this act, the sald six mouths shall be reekoned from the date of such passage. The first question, therefore, that presents Itself to the Inventor, who desires to procure a patent, 1s: Can Lobtaina patent? AposItive answer to thts qnestton is ouly to be had by presenting a formal application for patent to the Government, embracing a petition, spec. ifenilon, model, duplicate, drawings, and tho payment of the pre . scribed official fees. Astdo (roi these steps, all thre liirente entor can do ls, to enbinit hls plans to persous experienced In the bualucss of udtatnlug patents, gnd poltelt thelr opinton and adviec. I¢ the parties consulted are honorable wert, the inventor umy safety condde hts {dens to thein, xnd they will hiferin bias whether or not lits tnvention Iz probably patentable. Those wire have made lnvonttens and desire to consul with us respocting the sume, are cordially livited ta da so, We shall be huppy to see thein In person at our olfive, or to adyise them by inall, or through the Mining anp Sec1aatinic Farsy, Inatl casesthey may expeet from us an honest oplulon, For these consnitatlons, opinion und wiviec, we make no charge. A pen-and-Ink sketeh, nnd descrip" tlon of the Invertlon should be sent, together with astamptorreiurn OSS, Welte plaln ; do not nse penell or pale Ink ; be briet. ber that alt Itted to our enre, and all consul. fjatlons, ure kept by 18 seeret, and strietly contidentlal. Preliminary Examinations. Tn some cases tt may be adylsuble as a mensure of prudence to orderapreliminury exnmtnation. Thts consists of n special seareh, wade at the U. S, Patent Ofice, Washilngten, throagh the medium of our associate la that elty, fo useertaln whether among all the patents and models there stored, any Invention ean be found whieh 1s simlTur tn eharucter to that of the HL On the letlon of this special search we send a written report to the purty concerned, with sultable adviec. Our charge for this servlee, eluding the report, ls ten dollars. This seareh, though It Invelves the oxpense Just named, wlth usualiy prove satisfactory. If yhe same deviee hus been beture patented, the time and expense of constructing models, preparing dociments, ete., will in most eases be saved ; If the Invention has been tn part patented, the applleant will be cnabla to mod” Ify hls elaima and expectations aceurdligly. Many other obylous advantages attending the Preliminary Exalnation ; although the strictest searel docx not always enable the applicant to know posltively whether a patent ean be had. Applleations for patents are often rejected beeause ihe Examining officer finds a deser{ption of the alleged Invention in some foreign pubiieation ; ; Or some other persou has bean prevlonsly rejected on au analagons device ;* or some other Invention for a similar purpose, but partially resenibics the applicant’: In its constructlon; or the Government makes an unjust or nneommon deelsion. Aguinst none of these contingencies does the Prellminary Examination provide ; it will, however, generally Inform fhe applleant whether un Improvement slintlar io hls and used for the same purpose has ever been patented or not In thla country. Persons desiring ihe Prelimlnury examination are requesied to renilt tho fee ($10), aud furnish us wiih a skeich and description of the Invention. Caveats, A Caveat Is a confidentlal communication made to the Patent Oltice, and Is therefore filed within Its secret arehives. The privllege secured under a caveat is, that It entities the caveaior io recelve notlec, for a perlod of one ycar, of any applicailon for a patent subsequently Med, aud which Is adjudged to be novel, and is Ukvly to interfere with the Invenilon deseribed In jhe caveat, and the caveator Is then required to compleie his appileation for a patent within three months from the date of sald notlee. Caveat papers slonld be very carefully prepared. Our tee for the servlee varies from $10 to $20. The Government fee under the new law is reduced to ten dollars ; and this snm docs not apply, as lierctofore, as part of the feo on presenting an application for a patent. Taventors will oftimies find 1t very Important to take advantage of the caveat system—tbe expense under the law being comparatively small. To enable us to prepare eavcat paper, we only requiro a sketch and deseription of ihe luvention ; no model being neecssary. Expense of Applying for a Patent, Rejections, eto. Under ihe uew law, tho Government fee, on fillng an applicailon for a patent, ls fittcen dollars ; and if the patent is allowed, iwenty dollars additlonal is required. If rejected, the first fee of fifteen dollars is all thai is demanded. Engllss, French, Austrian, Prussian, Spanish, and inventors of every nationallty, may now obtain pat. ents in the United States upon the same terms as our own eltlzcns. The only discrimination niide 1s agalnst subjects of governments that diserimInate against the Inhabttants of the United States, To the foregoing official fees must be added the Atiorney's fees for preparing the various documents and drawings. Onur charge for

preparing a ense, presenting it te the Goverment, and attending to all business connected with it, until a deelslon is given, Is from $20 to $10. If the patent is granted no further agency expenses ensues.— If the application is rejected we ennse a thorough Investigatian to be made into the reasons presented to the Commissioner for refusing the patent. In making this exaintnatlon, we have excess to nil the drawings, models, books and specifications elted in referenee, and we report the result as carly a4 possible to onr elient. For thls servieo we make no charge. If the rejection proves to be an unjust one—whieh sometimes happens—It can generally be reversed, and the patent ohtained by contesting the ease. For this prosecution we charge a fee proportionate to the extra labor involved, payable only on the Ixsno of the patent; but our demand will be reasonable and satisfactory to our ellents, and will be arranged beforehand by speclal agreement. The system adopted: by us works well, gives general satisfaction and presents to all applicants, rich or poor, an equal opportunity ot haying thelr patent cases prepared, conducted and prosceuted in the best manner, by experlenced attorney's, upon the most moderate terms. Inventors who have rejceted eases, prepared either by them selves, or fur then by other agents, and desire to ascertaln their prospects of suecess by further efforts, are invited to avail themselves of our unequalled faelitties in scenring favorable results. We have heen sueeessful In securing Leticrs Patent In many enses of such a matter. ¢ Our terms for sneh cases are very moderate. Models, Remittances, atc. The laws requires that the Inveutor shall, In all cases, furnish a model, which must not exceed twelve Inches in any of its dimentlons; itsiould be neatly made, of hard wood or metal, or both, varnished or painted ; the name of the iny entor should be engraved or painted on it conspicuously. When the Invention consists of an improvement on some known Machine, a full working model of the whole will not be neeessary It should be sufflelentlyperfect, however, to show, with elearness, the nature and operation of the invention. Aa soon as the model 13 ready, It should be earefully boxed and shipped by express or oiherwise, to our address, namely: DEWEY & Co., Mlulng and Seicntifie Press, rooms 56 and 57, Goverument House, corner of Sansome and Washiuyton Streets, San Francisco, Cal. Prepay expenses and send express receipt to us by mail. Simultaneously with the model, the Inventor should send us the firat installment of the Goyermmeut fee, fifteen dollars, The Bae? may be forwianted either by express tt the me or by mall.— Theo safest wuy to remit ls by dratt on San Franetsco, payable to our order. Always send a letter with the model, aad also the rentiittanee Statlng the name and uddress of the sender. A full description shonld alse be sent with the model, embodying all the Ideas of the luventor respecting the Improvement. Ou the recelpt of the model und Government fce, the ease bs duly exlstered upon our bouks, and the application preeecded wlth ag fast as powlble, When the documents are ready we send them to the Inventor by mall, tor hl examinatlon, siguiture and aflidavit, with u inter of instruction, ete. Our fee for preparing tho ease ts then due, nnd will be called for, The case will then be presented to tho Patent Office, and ns soon as the puteni ly ordered to be Issued, the applleant will be notified to remit the last installment of the Government fee, namely, twenty dollars. Inventors who do bustness with us will be nottfled of the siate of thelr application 1 the Putent Otec, when tt is possible for us to do su. We do uot require the persunal attendance of the Inventor, unleas it ls one of great complication ; the business cau be well doue by correspondeuce. Wher the invention consists of a new articlo of manufacture, or anew coniposition, samples of the separate Ingredients, suM@elent to iuke the experlinent, aud also of the mnuufactured article lisel€ Must be furnished. The average thae required to procnre a patent, when the ease ta eondueted at our agency, ls tiiree montis. We frequently get them through In less time ; butt In oflier eases, owlny to delay ou the part of ofielals, the period ly suinctiines extended to four or five months, and even more. We make o special polut to forward our cases as rapldly as possibile. Retarn of Models. Under the new law, If the applleants ease has been rejecied he ts entitled to withdraw hls model froin the Puient Onicc. This Inw appiles to alt past rejeeied cases, and If parties wish io obtaln their models through us, they can do so at a small expense Application for Patents, Designs, Trads-Marks, Labells, eto, Under the new law patents may be taken out for any new form of any article, also for tools, patterns, castings, machinc-framecs, stoveplutes, borders, tringes, all new designs for printing, weaving or stamping upon silks, ealleoes, carpets, oll-cloih, prints, paper-hangings, and other articles. Trade-marks, labels, envelopes, boxes and bottles tor goods, niay also be patented ; likewise ail works of art, Inelndlug prints, paintings, busts, statues, bas-rellef, or compositions In alto, or basso rcelievo, new dies, wnpressions, ornaincnts to be placed upon any artlele of manufucture, architectural work, ete. Our facilities for ihe prompt preparation and securing of paicute are of the most extensive character and our charges ara very moderate. Patent Office Fees, and How Payable. Nearly all the fees payable to the Patent Office are posltlvely required by law to be paid in advance. For the sake of uniformity and convenlence, ihe remalning fees will be required to be paid In the same manner; that Is to say, before tbe labor is performed tor which they are to be reecived In payment. The following is the tariff of fees established by law: On every applleation for a design, for 3 years and six montbs $10 00 On every applicaiion for a design, for seven years. 5 00 On every application for a design, for fourteen year: On every eaveat. On every Saulonaian fora putent. On issuing each original patent. On fling a disclalmer On cvery applicatton for a re-tssuc On every additionn! patent granted on a re-issue On every application for un extension.. On the grant of every extension.. On appeal to tho Commissioner from Examiners-. “Atte chicf. On every appeal to the Judges of Circuit Court, D. C. . Infringements, The manufxeiure, sale, or use of a putented article, without con. sent of the owner of the patent, is an intringenient, and subjects tho intringer, by injunction from the Court, to an arrest of or prohibition from the employment of hls machinery, shop, works, factory and men in production of the artiele. In addition to injnnetion the infrtnger Is Mable to be mulehed in treble the amount of damages awarded hy the jury. The maker, the workinan, the scller, and the purehaser, If a user, are all linblo either collectively, or Individually, {lavIng access to all the patents, models, public records, drawings ‘and olher documents periaining to the Patent Office, we. are prepared to make ec: ons and give oplni upon alt infringe. ment questions, advise as to the seope and ground covered by pat. ents, and dircet with vigor any legal proceedings therewlth con: nected. Our charge will be moderate, and proportionate to the labor Involved. Appeals. I rejceted and other eases, the new law provides for an appeal fron. the Examiner-In-chief to the Commisstoner In person, ‘on tho payment of a fee of twenty dollars. <A further appeal may be taken froin the deetslon of the C. i to the U. S. Court, of the Distrlet of Columbia. These appeats are heard by any of the Judges before whom the applleant cicets to bring the ense. NoJury. All the papors, models, ete., are sent by the Commissioner to the Judge, who then reviews tite case, and elther sustalns or reverses the ComMhissloner’s decislon, The party taking the appeal pays an additional fee of tweniy-fve dollars. The Judge appolutsa day of hearing. The applicant ean appear in person or by counsel to state his ease and file awritten argument. Five days are allowed the opponent to pnt In an answer, and a similar perlod to the appelant for a closing reply. Many important cases are brought before the Judges on appeal, and the dceisions of the Commissioner are not unfrequently reversed, We havo bad snecesstul experienee In econdueting these appeals, and our services aro rendered on moderate terns. DEWEY & CO., Agents, Mining and Selentifie Press Office, Government House, corner Sansome and Washington strects, San Franclsco. Patent Clainis.—We will furnish, on appleatlon, the elnim of any invention thut has been patented within the last fourteen years. The namo of ihe patentee, date of patent, when known, and two dollars for copying, should be sent. Back Naumbers.—We have a limited number of past volumes of the Press ou hand, whicii will be sold, neatly bound, at reasonable rutes. A portion of the back numbers of the paper can be had by the single copy.