Collection: Books and Periodicals > Mining & Scientific Press

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Title: Volume 38 (1879) Collection Type: Books and Periodicals Collection Name: Mining & Scientific Press Published: 1879 # of Pages: 440 Download PDF: User Login Required Download OCR Text: User Login Required

Date Scanned: 2024-08-29 22:46:00 OCR Software Version #: tesseract 5.4.1 First Created: 2025-03-17 03:31:13 Last Updated: 2025-03-17 03:31:13

Original Held At: Searls Historical Library Location: 161 Nevada City Hwy, Nevada City, CA 95959

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June 28, 1879.] MINING AND SCIENTIFIC PRESS. 423 Mining Machinery Depot, PAREE & LACYW, No. 417 Market Street, San Francisco. NO. 7 IMPROVED AIR COMPRESSOR. SPECIAL ADVANTACES. Absolute cortainty in the action of the valves at any speed, Verfect delivery of the air at any speed or pressuro. The heating of the air entirely provented at any preesmie. ‘Takes less water to cool the air than any other Compressor, Power applied to the best advantage, Access obtainable to all the valves hy removing air chest covers, Hntire absence of springs or friction to open or shut the valves. No valve stems to break and drop inside-of cylinders, Have no back or front heads to bresk. ‘he only Machine that makes a perfect diagram, Na expensive foundations required, Absolute ecouomy in first vost and after working, Disr.acEMEN'ts in air cylinder perfect. Showiuy less leakago and friction than our competitors ani a snperior economy of about 20 per cent. ° Small Sizes made in Sections not to Exceed 300 lbs, With Adjustable Cut-off Poppet Valve Engine, and Forced Iron Crank Shafts. Tin Sra Tucdsy and Minatia! Wick Shy.) HYDRAULIC GRAVEL ELEVATORS, GIOVANNINI & CO., gravel mines that have no dump. = 417 and 419 Mission Street. SAN FRANCISCO. Sluices gravel and The attention of ow customers and especially of those interested in water up bill on an Water Works, Gas Works or Mines is respectinlly called to our very im-. angle of 45°, and portant iniprovenmient in the construction of Stop Valves (or Gates). They will run any kind of differ from all others in that the inner faces are perfectly parallel, there2 fore when the Gate or Valve isto he opcned, at the first movement, of the gravel that will run ei " ‘Ce: : fing . g i I Sie T Wi ‘This Gate has proved very efficient in Pipes of all sizes, and underany . rocks as easy as fine dirt, and will raise as much material as the wate 'y pressnreand from its double form and perfect joint formation is especially on 6 inches grade to 12 feet. i : = : : re pails tay ose fi laree Eineseor apnien sucnmy aud vase and) om i No hedrock cuts, tunnels or drains required. Machine a sufficient drain itself, and the avoidance of any wedge shape cannot jain at any poiut (see cnt). . o he aK fy ibe if A 1 Ay airacticnimancceec nn various ual ‘ aA He (or cu) Hpyene equal in sinned irae process of mining the same as any ome y He 1e hve G a oh Pp tion of all working parts, ease of access for repairs, and durability. * Cali ‘ 0, end for descriptive circular to pe Hate recently eee oe Hee on pie penne ane Shop places in California and Orego' p with all the latest improv ols and Machinery, thus grea increasing onr facilities for rapidly executing orders fur all sizes of Stop Valves (or J OSEL . J A “EL =) ' IN TD Y A Gates) from three-inch to four feet in diameter, or any size, to order. We 7 guarantee them to give better satisfaction, cost less money, aad last gp omegy than guy other Vive Ib Ue. an ordersin Brass Work for Breweries, . No, 51 Fremont Street, Office of the Hydraulic Gravel Elevating Mining Co., S. F. Distilleries, Plambers, Gas and Mining Apparatus, Ship Work, Soda Ap7 paratns, Steain Fittings, Meters, Gauges and Indicators. Alsuvin Muchine Pattern and Model Making, and Clock Work. Gear cut to order. Brass Castings of all kinds. We are confident of our ability, and all orders en. oS: . : feted bo ns will be executed with nan eee and dispatch. In CONSEQUENCE of spurious anettations of Liem Diomtwtetie” SS aeetecror)! §6=©= LRA AND PERRINS’ SAUCE, which are calculated to deceive the Public, Lea and Perrins SAVE YOUR GOLD! have adopted A NEW LABEL, bearing ther Signature, = = 2 Fy g a a 5 thus, Highly Important to Miners and Quartz Mill Men! Lez 0Gings . ay SILVER PLATED AMALGAMATING PLATES. which 7s placed on every bottle of WORCESTERSHIRE The best process yet discovered for saving fine or float gold. Extensively used with great SAUCE, and without which none rs Lenuine. success in gravel and placer mining in various parts of the Pacific Coast. Over tive huudred Ash for LEA & PERRINS' Sauce, and see Name on Wrapper, Label, Bottle and Stopper. orders bave been filled, and the demand is constantly increasing, A large number of these Plates Whalesale and for Export by the Proprietors, Worcester ; Crosse and Blackwell, London, were sent to Snake River mines, Idaho, last year, aud agreat many orders are being filled for &e., 6.3 and by Grocers and Oilmen throu~hout the Worle. them this season. Circulars containing full instructions for working these Plates sent with cach : order. Old Mining Plates. bought or taken in exchange for new Silver Plated Plates, and full To be obtained of CROSS & CO. San Francisco. value allowed. Gold extracted from old Plates at a moderate cost by a new and ecouoniical process, Old Plates (which ofton contain a surplus of gold above the cost of plating) cau be re-plated. SANDERSON j ee the most ete facilities on the Pacific Coast, orders can be filled very promptly . p » HUTCHINGS. D. M. DUNNE, J. 2 and satisfaction guaranteed. WW aa Mining Men and the public generally are cautioned against unprincipled and irrePH CIN Ts OFT, OR, >) eponsible parties traveling through the country, endeavoring to secure orders for very HUTCHIN GS & CO. A inferior qualities of Silver Plated Mining Plates. SAN FRANCISCO GOLD, SILVER, NICKEL AND COPPER PLATING worKS, . OIL and COMMISSION MERCHANTS, Manufacturers and Dealersin Sperm, Whale, Lard, Machinery and Illuminating Oils, 6I7 FRONT STREET, SAN FRANCISCO. Nos. 653 and 655 Mission Street, San Francisco, Cal. EDWARD G. DENNISTON, : = B = oo = = PROPRIETOR.