Volume 18 (1869) (430 pages)

O90 Og 4 Og Bh Oa Fn Og Og Oy, OOO, HO, OL, Oe, Hy, D O,%,%, 04° o,%, 0 —mubserlptlon, So Per Annum, Sher > Slngle Copies, 15 Cents. A Journal of Useful Arts, Scicnce, and Mining and Mechanical Progress. BY PDEWILY « Co., Patent Solicitors. San Francisco, Satur pay, Marcu 13, 1869. VOLUME XVIII. Number 12. ~ ‘Table of Contents. Evana’ Corrugaled Ritle—l-{Meenrasicat lw ‘AL Apairalint for Taking Miscritayy — strated, Mint¢ inthe Salmon River; Hlrd's-Eve Views; Steel in Rountry. the St, Louls Bridge, Gil. Buck Agat fard's Tijector and Morlun's Ejeclor, Ele. Secikatiric Misertrany.— dence for Grape Growers; Cuu-e ol the Blue Volor ct the Skv; The Metal GydroKen; Ble, Enaisrgiing MISC¥LLANY.— Caleutuilny Areas, Mex. can liprevement scheme; abn, Tin Mining in Callfornta, The Lenchtug Process, Lahey Curresy From Mt. Diablo to Vallejo, The Blue Lrad at Dutch Flat Sulphate of tuda tn Dyeing, b veteleal Bxperlineuts, Hread Maklug. Belence aud Art gohaad in aban. The Suez Canat, The ProStrengih ant Beonomy of] Jected Mokomoke Ml Walilytraulle Pipe. y cr Works: Et Coutelbutians torour Cabinet WiniscSumsany—Comprising L, slmoula's * Underground) late juteliivenuce trom the tet? various Countics aud dis: tricts In Culitormia, Brittsh Columbia, Idaho, Arizona, Montanu, Nevada, Utah, San Francisco Metal Market. san Francesco Market Kates, Notices to Gurrespondcits, flock Pricca—Bld aml Asked, New Incorporations, Work at the Foundries, Dry Barret Amalganiatlon. While Pluie Items. Railroad Lens. Resources and Devetopmenta New Patents nad Inventions. San Francisco Minlng Share holders’ Directory. Evans’ Corrugated Riffle. In onr issue of October 17th, 1868, notice was made of the invention and patenting of Mr. George R. Evans’ Corrugated Rifle, of which we herewith present an engraving. The object of this very eimple and practical device is to save tbe mercury that leaves the battery, or other amalgamation process, in the same manner ns, and in place of blankets, whose costly and perishable character render them of limited application. As the corrugated riffle of Mr. Evans has been applied ina number of Washoe und California mills, and as the verdict has been invariably favorable, so far as we are aware, a more definite represeutation of it will be of interest to our readers. The pulp from the etamp mill flows into the riffle at E, and outat F, upon another eection eimilar to the one represented in the engraving ; as many of these eections being put together as may be thought best euited to the locality or to the ore. It will be seen that the riffle is a simple trough, the front side of which is left out in the engraving, having a corrugated bottom, and a slit, ns at A, iu every alternate corrugation, the object of which is to let the mercury and conceutrated particles of ore through into the reservoirs below. The latter are little more than reservoirs, as they etand full of water when the apparatue is in operation, retaining all the heayjer particles, while the lighter ones are oyerflown or carried from one into the other, and off. Tbe corrugation eemi-circles in the upper trough are 3 inchee in diameter ; and the dimensions for a trough euitable for @ 20-stamp mill are 2 feet in width and about 30 feet in length. If such a contrivance will, as is claimed, perform the same work as three times that length of blankets, or eveu the same length, it is evideut that the latter must speedily be supereeded. The effect of this semi-cireulor corrugation is that the particles of oreare so tossed, rolled and ground against each other, as to bealternately under the eway of the enrrent, and throwu off successively into a Series of eddies. Au idea of the mauner in which even light particles, like splinters of wood, are revolved in these frothing eddies, can be obtained only by witneesing tbe operation, After rcturning into the eddy five or eix times, depending upon the quantity of water let on, the splinter finally receives an impetus from the current which carries it over into the next corrugation, where the tossing and grinding are repeated, Any other shaped riffle than that of semi-circular corrugatiou, encounters the difliculty of caking, rendering useless the amalgamated copper surface, as well as much of the mechanical advantage of the rites, by filling them up. The following result of a practical teet, ns given by a correspondent of the Herald, we eubjoin : The Superintendent of the Rhode Island Mill, Virginia City, in experimentiug with this improved coucentrator, placedjit at the eud of the line of sluives attached to the mill, thus making it third in the chaiu of apparatus for eaviug the gold and eilver, and obtained good reeults. ‘This mill reduces abont 60 tons of ore per day, in the working of which there is a loss of between 75 aud 100 pounds of qnicksilver. The sluices catch about ten per cent. of this loss months. The owners of the patent are George R. Evans, the inventor, 8S. P. Taylor, Johu White and Charles Cousins. The agent ie S. P. Taylor, 416 Clay street, San Fraucisco. Tin Mining in California. The San Jacinto Tin Mining Company, which was recently organized in this city for the pnrpose of mining for tin at the locality popularly known as the Temescal Tin mines, eome fifty miles east of Los Angeles, have now some thirty men employed in raising ore and opening up the miue, preparatory to still more extensive operations. Avery rich etreak of ore hns been developed, from which nbout thirteen tons have already been delivered in this city. One hundred sacks were received by the last steamer from Los Angeles. The ore, as fast as received, is being crushed, pulverized and concentrated at the Union Foundry. It1s first broken up to nut size EVANS’ from the pans, thus reducing tbe absolute less to from 67% to 40 pounds per day. The first two days’ run was so astonishing in its results that he thought there must have been some unusual Jeak connected with the pans, and therefore at once made a thorough exurination and clean-up, but fonnd nothing wrong. He then made another run of twelve hours with this concentrator nttached, eetting them at an inclination of one iuch to the foot. The resulf was three common water-buckets full of rich sulphurets saturated with globules of quicksilver, while at the bottom of each bucket was a pool of the bright metal. There were at least 25 pounds of qnicksilver in these three bnekets, which of couzse contained a quantity of amalgam. Evans’ riffle may be seen in operation at the Nevada, Ogden and Rhode Island mills, in the vicinity of Virgiuia City.’ It has been ordered for a number of California mills, and also for Lower California. In silver mills it is next in order to the settler, and does away with the necessity for an azitator. In gold mills it forms a very excellent apron,—an importaut part in such amill. It will alsoserve as a concentrator for sulphurets, saving the very lightest sulphuret particles, On the score of durability it is superior to blonkets, in lasting elena five years, while blankets will decay} and become useless in from three to six PATENT CORRUGATED RIFFLE. in a rock-breaker, after which it is reduced toa very exceeding degree of fineness iu one of Hnnt’s Improved Ball Crushers—a machine something similar to those in use for pulverizing quartz on the Mariposa Estate. After being thus pulverized the pulp will he coucentrated by Hunter’e concentrators, The ore as delivered in this city averages from 12 to 15 per cent. of tin, and after being pulverized, is concentrated np to about 70 per cent. In this condition it will be taken to Mosheimer’s Works, at the foot of Powell street, where x suitable furnace has been erected for smelting and refining the same. The present is merely an experimental test for ascertaining the value of the ore, and the thoroughness of the various manipulations throngh which it mnst pass to obtain metallic tin. About twenty tons of ore will be subjected to this test. The principal work now being done at the mine is in the way of its development. Two shafts are being snnk, one to a depth of 100 feet, and the other 150 feet; these shafts will be conuected with a drift 350 feetin length. From developments already made, the managers are confideut that when the shafts and drift are completed, a body of about 125,000 cubic fect of 12 lto 15 per cent. ore will be ‘proven. which will yield about 12,000 tone. Should these auticipations be realized, an extensive plant of worke will be immediately erected at the mine, ond tin mining will be inaugurated in earneet on the Pacific coast. We ehall watch with much intereet, the progress of this preliminary work, and report results as soon a3 reached. Since the above was written we learn that later intelligence has been received from the mine, etating that the vein has already been reached in the drift now in progrese from the bottom of the 100-foot shaft. This developmeut renders the continuance of rich orein depth an ascertained fact. 2) me oe Work at the Foundries. Not as much work, in the way of mining machinery, isin hand ot the foundries at present, as might be expected from the renewed interest that is generally taken in mining since the development of eo many additional ricb mines at White Pine. A eingle 20-stamp quartz mill at the Union Foundry, for the Stanford Brotkers at White Pine, is the only order of the kind that we have heard of ; though a number of other mills are on the tapis, A great number of old Washoe mills are being transported eastward. Atthe the Funron Founpry there is in hand a sawmill for Crossman & Co., Red Bluffs; a flouring mill for Coghill, Harrison Fogus, or the ‘Reno Mill Co.” at Reno, which is to have two run of stone a steam engiue, 12x24, for o sawmill at Fisk’s mill, Sonoma Co., ordered by F. Helmke. At the Rrspon Inon Worss, there is doing a great deal of steamship work, besides a propeller double engine for the Dry Dock Co., 22-inch cylinder and two feet stroke ; another of the same size and kind for a tug for Capt. Kentfield; two boilers for the steamer Brisk, belonging to A. A. Cohen, for Oakland’ Ferry Co.; a steamer engine, 24x94, for another party; two engines, 22x5, for a side-wheel steamer for Capt. Tyler ; new shafts for the steamer New World, of the valley railroad route; and repairs are being made on the eteamere Senator, Antelope, China, Idaho, Princess, Constitution, the propeller California, etc. Mr. Moore, of the Risdon Works, has gone to England for the purpose of acquiring all that is new in the iron working art, and the company, having purchased thirty acres of gronud on the Potrero, near the Rolling Mill, are about to erect new works of n capacity and with facilities that will be suited to the times. Mr. Cummings isthe acting snperintendent, in the place of Mr. Moore. Anizona.—Charles Gentile, the photographer, has issued the prospectus of an illustrated work on Arizona ; its Secnery, Climate, Geology, Natural Productions, Inhabitants, Present Condition, and Prospects in the Future. os Tae Union Pacific Railroad was eompleted on the 20th to within seven miles of the motith of Weber Cation, which is virtnally pol Balh Hake, ae

O90 Og 4 Og Bh Oa Fn Og Og Oy, OOO, HO, OL, Oe, Hy, D O,%,%, 04° o,%, 0 —mubserlptlon, So Per Annum, Sher > Slngle Copies, 15 Cents. A Journal of Useful Arts, Scicnce, and Mining and Mechanical Progress. BY PDEWILY « Co., Patent Solicitors. San Francisco, Satur pay, Marcu 13, 1869. VOLUME XVIII. Number 12. ~ ‘Table of Contents. Evana’ Corrugaled Ritle—l-{Meenrasicat lw ‘AL Apairalint for Taking Miscritayy — strated, Mint¢ inthe Salmon River; Hlrd's-Eve Views; Steel in Rountry. the St, Louls Bridge, Gil. Buck Agat fard's Tijector and Morlun's Ejeclor, Ele. Secikatiric Misertrany.— dence for Grape Growers; Cuu-e ol the Blue Volor ct the Skv; The Metal GydroKen; Ble, Enaisrgiing MISC¥LLANY.— Caleutuilny Areas, Mex. can liprevement scheme; abn, Tin Mining in Callfornta, The Lenchtug Process, Lahey Curresy From Mt. Diablo to Vallejo, The Blue Lrad at Dutch Flat Sulphate of tuda tn Dyeing, b veteleal Bxperlineuts, Hread Maklug. Belence aud Art gohaad in aban. The Suez Canat, The ProStrengih ant Beonomy of] Jected Mokomoke Ml Walilytraulle Pipe. y cr Works: Et Coutelbutians torour Cabinet WiniscSumsany—Comprising L, slmoula's * Underground) late juteliivenuce trom the tet? various Countics aud dis: tricts In Culitormia, Brittsh Columbia, Idaho, Arizona, Montanu, Nevada, Utah, San Francisco Metal Market. san Francesco Market Kates, Notices to Gurrespondcits, flock Pricca—Bld aml Asked, New Incorporations, Work at the Foundries, Dry Barret Amalganiatlon. While Pluie Items. Railroad Lens. Resources and Devetopmenta New Patents nad Inventions. San Francisco Minlng Share holders’ Directory. Evans’ Corrugated Riffle. In onr issue of October 17th, 1868, notice was made of the invention and patenting of Mr. George R. Evans’ Corrugated Rifle, of which we herewith present an engraving. The object of this very eimple and practical device is to save tbe mercury that leaves the battery, or other amalgamation process, in the same manner ns, and in place of blankets, whose costly and perishable character render them of limited application. As the corrugated riffle of Mr. Evans has been applied ina number of Washoe und California mills, and as the verdict has been invariably favorable, so far as we are aware, a more definite represeutation of it will be of interest to our readers. The pulp from the etamp mill flows into the riffle at E, and outat F, upon another eection eimilar to the one represented in the engraving ; as many of these eections being put together as may be thought best euited to the locality or to the ore. It will be seen that the riffle is a simple trough, the front side of which is left out in the engraving, having a corrugated bottom, and a slit, ns at A, iu every alternate corrugation, the object of which is to let the mercury and conceutrated particles of ore through into the reservoirs below. The latter are little more than reservoirs, as they etand full of water when the apparatue is in operation, retaining all the heayjer particles, while the lighter ones are oyerflown or carried from one into the other, and off. Tbe corrugation eemi-circles in the upper trough are 3 inchee in diameter ; and the dimensions for a trough euitable for @ 20-stamp mill are 2 feet in width and about 30 feet in length. If such a contrivance will, as is claimed, perform the same work as three times that length of blankets, or eveu the same length, it is evideut that the latter must speedily be supereeded. The effect of this semi-cireulor corrugation is that the particles of oreare so tossed, rolled and ground against each other, as to bealternately under the eway of the enrrent, and throwu off successively into a Series of eddies. Au idea of the mauner in which even light particles, like splinters of wood, are revolved in these frothing eddies, can be obtained only by witneesing tbe operation, After rcturning into the eddy five or eix times, depending upon the quantity of water let on, the splinter finally receives an impetus from the current which carries it over into the next corrugation, where the tossing and grinding are repeated, Any other shaped riffle than that of semi-circular corrugatiou, encounters the difliculty of caking, rendering useless the amalgamated copper surface, as well as much of the mechanical advantage of the rites, by filling them up. The following result of a practical teet, ns given by a correspondent of the Herald, we eubjoin : The Superintendent of the Rhode Island Mill, Virginia City, in experimentiug with this improved coucentrator, placedjit at the eud of the line of sluives attached to the mill, thus making it third in the chaiu of apparatus for eaviug the gold and eilver, and obtained good reeults. ‘This mill reduces abont 60 tons of ore per day, in the working of which there is a loss of between 75 aud 100 pounds of qnicksilver. The sluices catch about ten per cent. of this loss months. The owners of the patent are George R. Evans, the inventor, 8S. P. Taylor, Johu White and Charles Cousins. The agent ie S. P. Taylor, 416 Clay street, San Fraucisco. Tin Mining in California. The San Jacinto Tin Mining Company, which was recently organized in this city for the pnrpose of mining for tin at the locality popularly known as the Temescal

Tin mines, eome fifty miles east of Los Angeles, have now some thirty men employed in raising ore and opening up the miue, preparatory to still more extensive operations. Avery rich etreak of ore hns been developed, from which nbout thirteen tons have already been delivered in this city. One hundred sacks were received by the last steamer from Los Angeles. The ore, as fast as received, is being crushed, pulverized and concentrated at the Union Foundry. It1s first broken up to nut size EVANS’ from the pans, thus reducing tbe absolute less to from 67% to 40 pounds per day. The first two days’ run was so astonishing in its results that he thought there must have been some unusual Jeak connected with the pans, and therefore at once made a thorough exurination and clean-up, but fonnd nothing wrong. He then made another run of twelve hours with this concentrator nttached, eetting them at an inclination of one iuch to the foot. The resulf was three common water-buckets full of rich sulphurets saturated with globules of quicksilver, while at the bottom of each bucket was a pool of the bright metal. There were at least 25 pounds of qnicksilver in these three bnekets, which of couzse contained a quantity of amalgam. Evans’ riffle may be seen in operation at the Nevada, Ogden and Rhode Island mills, in the vicinity of Virgiuia City.’ It has been ordered for a number of California mills, and also for Lower California. In silver mills it is next in order to the settler, and does away with the necessity for an azitator.. In gold mills it forms a very excellent apron,—an importaut part in such amill. It will alsoserve as a concentrator for sulphurets, saving the very lightest sulphuret particles, On the score of durability it is superior to blonkets, in lasting elena five years, while blankets will decay} and become useless in from three to six PATENT CORRUGATED RIFFLE. in a rock-breaker, after which it is reduced toa very exceeding degree of fineness iu one of Hnnt’s Improved Ball Crushers—a machine something similar to those in use for pulverizing quartz on the Mariposa Estate. After being thus pulverized the pulp will he coucentrated by Hunter’e concentrators, The ore as delivered in this city averages from 12 to 15 per cent. of tin, and after being pulverized, is concentrated np to about 70 per cent. In this condition it will be taken to Mosheimer’s Works, at the foot of Powell street, where x suitable furnace has been erected for smelting and refining the same. The present is merely an experimental test for ascertaining the value of the ore, and the thoroughness of the various manipulations throngh which it mnst pass to obtain metallic tin. About twenty tons of ore will be subjected to this test. The principal work now being done at the mine is in the way of its development. Two shafts are being snnk, one to a depth of 100 feet, and the other 150 feet; these shafts will be conuected with a drift 350 feetin length. From developments already made, the managers are confideut that when the shafts and drift are completed, a body of about 125,000 cubic fect of 12 lto 15 per cent. ore will be ‘proven. which will yield about 12,000 tone. Should these auticipations be realized, an extensive plant of worke will be immediately erected at the mine, ond tin mining will be inaugurated in earneet on the Pacific coast. We ehall watch with much intereet, the progress of this preliminary work, and report results as soon a3 reached. Since the above was written we learn that later intelligence has been received from the mine, etating that the vein has already been reached in the drift now in progrese from the bottom of the 100-foot shaft. This developmeut renders the continuance of rich orein depth an ascertained fact. 2) me oe Work at the Foundries. Not as much work, in the way of mining machinery, isin hand ot the foundries at present, as might be expected from the renewed interest that is generally taken in mining since the development of eo many additional ricb mines at White Pine. A eingle 20-stamp quartz mill at the Union Foundry, for the Stanford Brotkers at White Pine, is the only order of the kind that we have heard of ; though a number of other mills are on the tapis, A great number of old Washoe mills are being transported eastward. Atthe the Funron Founpry there is in hand a sawmill for Crossman & Co., Red Bluffs; a flouring mill for Coghill, Harrison Fogus, or the ‘Reno Mill Co.” at Reno, which is to have two run of stone a steam engiue, 12x24, for o sawmill at Fisk’s mill, Sonoma Co., ordered by F. Helmke. At the Rrspon Inon Worss, there is doing a great deal of steamship work, besides a propeller double engine for the Dry Dock Co., 22-inch cylinder and two feet stroke ; another of the same size and kind for a tug for Capt. Kentfield; two boilers for the steamer Brisk, belonging to A. A. Cohen, for Oakland’ Ferry Co.; a steamer engine, 24x94, for another party; two engines, 22x5, for a side-wheel steamer for Capt. Tyler ; new shafts for the steamer New World, of the valley railroad route; and repairs are being made on the eteamere Senator, Antelope, China, Idaho, Princess, Constitution, the propeller California, etc. Mr. Moore, of the Risdon Works, has gone to England for the purpose of acquiring all that is new in the iron working art, and the company, having purchased thirty acres of gronud on the Potrero, near the Rolling Mill, are about to erect new works of n capacity and with facilities that will be suited to the times. Mr. Cummings isthe acting snperintendent, in the place of Mr. Moore. Anizona.—Charles Gentile, the photographer, has issued the prospectus of an illustrated work on Arizona ; its Secnery, Climate, Geology, Natural Productions, Inhabitants, Present Condition, and Prospects in the Future. os Tae Union Pacific Railroad was eompleted on the 20th to within seven miles of the motith of Weber Cation, which is virtnally pol Balh Hake, ae