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Collection: Books and Periodicals > Mining & Scientific Press

Volume 17 (1868) (428 pages)

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a®@a@,@, @, ©, @, Oy Subscription, 85 Per Annum, Single Copiesx, 15 Cents. A Journal of Useful Arts, Science, and Mining and Mechanical Progress. BY DEWEY & CO., Prtont Solicitors. San FRancisco, SATURDAY, AuGusT I, VOLUME XVII. Wumiber 5. Table of Contents. Beggs’ Ous Regulator—T!"e, is eg Patent Baw Tevth —ilts. Mall's Petent Kaife—la. The Institute Pavition. The Appleton Buck. making Estoblishment. Catatel and Labor. Carbolle Acid, Fire and Water. Making Mortar. Alartins In Sen Francisco. African Geograpty 30 HundMamctiasicaL . Miaceutany.— Tho Steem Engine to be fuareded, Heavy Machine vuls, Now ic of Operathig Stlde Vuivea Rome sTIFtoO MisceLLany.— Source of Light ln Flame; (aaes trom Volcanoes; Oold Bearing Rocks ; Phosphoreacent Ithotographs ; Experlment with Hydrogen. MINING SUsMAhY—Comprising late Inlelligence irom the various couutles and districts In Cniltornia, Colorado, Oacotah, Idnho, Mon. tina, Nevada, Oregon, New Mexleo, San Francisco Market Rates. Stock Pricea—Bid and Asked. San Francisco Mining Shareholders’ Directory. San Francisco Weekly Stock Clreular. The American Saw Company. The manufactory of this company is located at Trenton, N. J., with their principal business office at No. 2 Jacob strect, N, ¥. ‘he saws made by thiscompany have been in uso about threo years, working in every kind of timber and in every climate. They mannfacture two kinds of cireular saws, ono with movable teetb, and the other with an improved solid tooth. The peculiarity of tbis latter method of constrncting saws, will he readily understood by examining the accompanying figure. red Years Ago Electro-Magnetian, Copper on the Rhine. Sulur Heat as @ Motor. Motion of the Eye. Tho Stcom Plow at the Fair. Cox's Cement Mechlne. Colorado Grea. Mining Profits. Notices to Correspondents. New Patents and Lnventions. The perforations or half circular holes are on 2 line with the wear of the saw, and form the base of each tooth as the saw is gradnEMERECh’S PATENT ally reduced in size. Many advantages ore claimed for tbis mode of constructing saw teeth, No gummiug is required; threefourtbs tho expense of filing, and consequently of tbo cost of files is saved; the saw is less liahle to he hroken, as hreaks invariahly start from hetween tbe teeth, and from a sbarp corner mado by the file. Should a orack commence it can only hreak through the bar between the holes or apertures, and gonofurther. ‘Tho bars betwecn the holes are soffer than tho cutting part of the saw tooth, aro very tough and filo easily, so that the corners of tbe file are uot worn out as fastasin filing ordinary saws, while at the same timo the cutting part of the tooth is of superior temper. The bars can then be either cut out with a cold ecbisel, or by filing through tbem at each end of the bar with o taper file; the har will drop out and leave 2 perfect tooth again. Cross-cut and other saws, as well as circular saws, are made with this style of teeth. It is claimed tbat wherever tbese saws have been put into use, they have given the fullest satisfaction. Tbe construction and adjustment of the movable teeth saws, may be readily understood by referring to tbe company’s advertisement. All of these yarious saws can bo seen at the office of the company, 606 Front street, in this city. In addition to their saws, this company also manufacture a patent adjustable swage, for spreading, sharpening and shaping the teeth of saws. Theacecompanying illustratiou, Fig. 2, represeuts the mode of construction and operation of this instrument; 1, 1, sbow tbe adjustable or movable lips; 2, the screw to bold them firmly in position; 3, the sliding-pin contaiuing the V-shaped die; 4, the slot or groove to admit of the swage being used on @ fine tooth saw; 5, shows the body of the swage, and 6 the wrench. The movable lips are so constructed as to form tbe teetb of saws into the most perfectshape, leaving them widest at the extreme points, and on tbe under side. The tool appears to be a most perfectly devised instrument for the purpose intended. Both this instrument and tbe
perforated tooth arrangementare the inventions of Mr. James EK. Emerson, Superintendent of tho company’s works at Trenton. occa -<) Tse Missourr Tin Mives.—It appears that tbo reported tin mines of Missouri are still attracting considerable attention. Tbe St. Louis Dispatch' of o recent date, says ADJUSTABLE SWAGE. that Phelps, Dodge & Co. of New York, baye recently paid $50,000 for 1,200 acres of land, supposed to ho valuablo for tin. A St. Louis company has lately expended $7,500 iu sinking sbafts ond putting up machinery upontbeir property. A correspondent of the Dispatch expresses the opinion that the United States will soon be able to export tin from the mines of Missouri. Beggs’ Gas Regulator. The want of something to regulate tbe pressure of gas in service pipes, to tbe proper standard for securing a bright and steady ligbt, with an ecouomical use of the gas, bas long been felt and acknowledged. Gas, when burning under too high a pressure, is forced so rapidly through the burner into tho atmosphere, that sufficient time is not giveu forit to properly mix with the SaaS oxygen of the air, until at least a large portion of it has passed heyond the influence of the heat derivable from the hlaze, by which it should he ignited; tbat portion consequeutly passes away unburned, and is of course wasted. But under a proper pressure the gas is all consumed, and the intensity of the ligbt greatly increased. When the gas is first turned on the proper degree of pressure may readily be obtained. But if turned on early in the evening, the numerous additional burners subsequently lighted and fed from the same street main, so reduces tho pressure as to cause an imperfect light; again, if the quantity of gas is increased hy turning off a portion of the hurners, the pressure will be so great that much of tho gas will pass away unconsumed. Tbus tbese changes take place from bour to hour, as the number of lights in any given neighborhood are increased or dimiuisbed. You must tberefore either be constantly regulating your gas, or your lights will he defective and unsatisfactory. which shall be sufticiently sensitive, and at the same time have sufficiont power to do. this regulating work for you. Mr. Eugene} BEGGS’ PATENT GAS REGULATOR. Beggs, of this city, after considerable study and experiment, has finally sneceeded in devisiug an apparatus which seems to aceomplish this purpose most perfectly. This appiratus is connected to the meter, and acts as a perfect governor or regulator to the flow of the gas, and consequently to the pressure with which it enters the hurners. When a single hurner, of many that may bo lighted, is turned off, or an additional one turned on, it is quite surprising to witness how quickly this sensitive and automatic device adjnsts itm self to the de¥ creased or increased demand for the illuminnating medium. No human hand could more quickly or accurately adjust the subtle fiuid to its accidental disturhance, We give herewitb asectional view of thisregulator, showing its connection with the outlet pipe of the meter, and exhihiting tbe interior arrangement of the device. By referring to the engraving, arepresents the meter, and A the case of the regulator, B isthe diaphragm, which in this apparatus is made of 2 flexible metallic substance, instead of oiled silk, leather, ete., which allows the gas to escape through its pores, By the use of metal all leakage is avoided, while the requisite delicaoy of movement is at the same time seoured. The diaphragm B has the post C passing through its center and attached to the end of the lever D. This lever is conneoted with the lever G by @ link as shown, and the valve J is attacbed to the long arm of the lever G, so tbat hy tbe intervention of tbe series of levers, a very slight motion of the diaphragm very sensibly affects the valve, The lever G has at the opposite end from the valve, a counterpoise H, and the lever D carries the adjustable weight /, which is operated hy a rod #’ passing through a stuffing-hox on tbe side of the case. By means of this rod the weight # can he moved along the lever D to any point, and when once adjusted to any desired numher Now the ouly practical way to temedy. of burners needs no further attention. A tbis evil is to procure some arrangement) curved lever Jis attacbed to a standard heneath tbe lever G, and has its short arm attached to the lever bya link. The opposite end of the curved lever passes over the top of the lever G, and carries a weight