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Collection: Books and Periodicals > Mining & Scientific Press

Volume 39 (1879) (446 pages)

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proved: Jun TWerenres op MALLEABEE fi ps ab EDD oy COMPOSTION LOWEST Rum SS DIE! Now Re ES SHORTEY bout One-tal ~h Tt Stage Li 8 YOLLOTS NCIS0 Honky, fie tockton’ Fea Becta + d Sstarday, com A, arriving t sy, Tussin with train st MILTtc > SAN FRANCIMOs)) & Ed, Hats omen winlAARBOURNE & gomery St, 62. NICS'FH ZANCISCO, C3) sgust st, NDUSTAY eal UIT yp represted Jrumentl (i ON AND OE yoy, RAE ME . qporical Ol ape, wl a Aplasul part ot! spoald pny 8 7 posT st 1, Preside! . COLYER 8 a prion! — come? ple TMY 135-3 36 EXPOSURES INN ID Ye"’e"e* «e e. Mining, Popular Science and General News. BX DEWEY & cO., Publisheres. An Ilustra ted durnal of ~ SAN FRANCISCO, SATURDAY, AUGUST 2, 1879. VOLUME XxXXIX Wumber 5, An Ingenious Automatic Ventilator. We illustrato herewith an ingeniously devisr and curious automatic ventilstor, recently po ented through the Mixing Any Scientir Press Patent Agency by Frank J, Crouch, Eugene City, Oregon. Mr. Crouch is a you man of great ingenuity, and has invented number of useful appliances of different kin¢ This ventilator is his latest device. It is tended as an attacliment to windows, transon, ete., by means of which the opening or cl: ing of the window or transom is automaticay accomplished, in accordance with the temper ture of the room. The sash or transom is hinged or swiveled> the frame, so ag to swing in a circle on a cent] axis, and thus be opened or closed, This sht or axis is continued through the window frac on one side. On its outer end is a pinien, whh nnites with a small spur wheel, as shown. On the lower part of the frame is secureda pipe-cylinder or chamber, on top of which ia thin metallic plate. Ou top of this plate is aother of the same size and shape, the two plas being secured together at their edges, and e apace between them being filled with sulphic ether, turpentine, alcohol or similar sensite substance, The tube or cylinder opens into e chamber formed by these two plates throih the lower plate, and also contains the ethenr other substance. To the top plate of the dk is secured an arm, the upper end of whiclis fastened to a crank on the spur wheel.! Now, when the liquid in the cylinder ed . ° hetween the plates or disks expands, the ples are expanded as they admit of a sensible sprg apart at the centers. As they are expandedr forced apart by the expanding substance, ie arm attached to the upper plate operates 1e¢ erank and gear wheel, thus rotatiug the pion on the shaft or trunnion carrying the saslor. transom, and the sash or transom is thus swag open, As tho liquid cools, th reverse is 1e case, and the sash is closed. The plates and cylinders are made prefers y of glass, as it absorbs heat readily, and nonof the chemicals used will corrode it. No danrous effects are preduced shonld leakage ocr. The plate and cylinder are placed inside 1e the room so as to be affected only by the tnperature inside. When the room is heated 1e resultant expansion of the plates acting one gearing will open the transom, and as the licid cools, the plates come together, and close ie transom, thus regulating the size of the opemg through the transom or window in proportic to the temperature of the air. This durable id self-acting ventilator is adapted to hotels, ieaters, Sele and private dwellings, where od ventilation ie desirable. On one side of he window frame may be attached a gong, sorranged that in case of fire or when there is ny unusual heat, the movement of the sash ill ring the bell to attract attention. Exonizine Woop.—W. E. D. desire to know ‘‘the details of making the so-cied ebonized wood for furniture and cabinet wk. What kinds of woods can be used and how he finish is put on,” 1. The wood may be ced black by copperas and nutgalls, or hy japan ng with two coats of black japan, after which irnish or polish, or use size and lamphlack, p yious to laying on japan. 2, Collect lamp! ck from a lamp or candle on a piece of slate, can ordinary China dinner plate. Scrape ofihe deposit, mix with French polish and appl to the object in the ordinary way. Any kix of wood can be used. Derarturr.—We notice the departui of Mr. Henry Woodcroft Hammond from Virnia City for England. Mr. Hammond has for nny years had large transactione in the wire»pe It is a sorrowful but ackuowledged fact that when an important enterprise of any kind is inaugurated aud begins to establish itself upon a paying basis, the bright auticipations of the originators are sat dowu upon by tho ubiquitous tax collector. There is neither rhyme nor reason in any iudirect crushing or sinotheriug of any business to satisfy the ever increasing and never ending demands of tsxes, The goese that lays the golden egg is killed to satisfy the rapacity of tax requirements. It seems sometiines that we need more tea thrown overbeard by caricature Indians in order to stop the inequality of
our burdens. Our remarks are, to a certain extent, applicable to the assessmeuts npen the quicksilver production of California, Five counties in this State contain quicksilver mines, and, with their productiou for the psst three years, are as follows: Napa county, Redingten mine, 25,494 flasks, assessed value j yj Quicksilver Production of California, . immense capital may be sunk in mining property, and yot would be valued ata high figure, too high to be compatihle with justice perhaps, and, in the case of our quicksilver mines, very far from the constitutional spirit of equal taxation. Our quicksilver mines deserve to be fostered, since their past has proved to be of so much importance to our general mining intereats. Footprints of Inventors. If we could drop out of mind the mechanical world of the present and have the world of 100 years ago revealed to us, a vast and comparatively trackless plain would represent the industrial condition of the time. The only footprints visible are the shadowy ones of the geniuses of the day, searching for the connecting link between mind and matter. Coping with the material difficulties and laying aside all personal considerations, these footprints in the sand beeome more distinct as time approaches the CROUCH'’S AUTOMATIC VENTILATOR. per flask $15.89; Lake county, Sulphur Banks, 30,849 flasks, assessed value per Hask $10.08; Lake county, Great Western, 14,266 flasks, as. sessed value each $9.84; Sonoma county, Oakland, 4,687 flasks, assessed value per flask $7.11; Fresno county, New Idria, 17,846 flasks, assessed value per flask $10.74; Santa Clara county, Guadalupe, 18,952 flasks, assessed value per flask $13.36; Santa Clara county, New Almaden, 56,488 flasks, assessed value per flask $17.66. It would not he true to say that the stoppage of work on some of these mines is due wholly to the tax upon an enhanced valuation. But it is one of the reasons, Quicksilver has commercial value capable of being definitely ascertained, yet, in the valuation put upon the flasks, there are differences amounting to $10.55. New Almaden having an assessed value per flask of $10.55 more than the Oakland of Sonoma county. The New Aimaden has its entire property assessed upon a valuation of $997,645, while all the other mines combined are valued at ouly $1,334,894, and besides assessed per flask at $17.66, The total production of all of the nine g, . preseut, until they become the footholde of progress, the,beaten track which has led modern inventors to the apotheosie of mechanical ingenuity. The world would have existed without the inventor, a weakly, eickly world, Hamlet, with the part of Hamlet omitted. The elements of nature held in abeyance, awaiting the inventor’s wand, would have rusted in oblivion, if poverty, toil and persecution had driven the inventive genius of mau fom the field. The element of light latent in a multitude of substances came forth obedient to the command of an inventor, and found a foothold towarde progress in the lucifer match. The means of creating light called forth the inventor who could find a use for the application of that element, and illuminating facilities have developed into the brilliancy of the sun through the medium of that fearful power, electricity, And this is only a emall portion of the inventive progress of man, Through all of the various gradations of progress, from the faint footsteps of the early inventor to the steady, heavy tread of the inodern inventor, each one has established a foothold for the progressive discoveriee of him who came next in the order of tine, until it Mineral Exhibit at the Mechanics’ Fair. That the mineral products of this coast should be as fully represented as possible at the approaching exposition of the Mechanics’ Inatitute is a proposition too obviously true to require argument. Of all our material prodncts none moro deserve to find a place in a grand display of this kind than these, none others being so generally interesting or thoroughly typical of our natural resonrees. Whatis being done officially to meet this necessity we are not fully advised. Dr. J. I. Bleasdale, who has for some time past been engaged in making a collection of minerals on this coast, will, we understand, place the same on exhibition at the Fair, This gentleman’s collection, which is quite large and considerably varied, contains some specimens unique and rare, and will, so far as it goes, constitute an attractive feature in this line. This is a matter, however, that shonld not be left solely to private hands to be looked after, but should receive attention from the management itself, There is in this city the material for making a creditahle display in this department if only Proper measures are taken for obtaining and preparing it for the use of the Institute, The Geological Society of this State has been working quietly for several years gathering ores, fossils and metals of every description. They have now on hand an immense quantity of these mineral treasures, boxed up and stored in a fire-proof building for safety. For the purpose designated the entire fruit of their labors would be placed at the disposal of the Institute, the Society being assured, of course, that they would be properly cared for and ssfely returned. These specimens to fit them for exhihition would require to be laheled and placed in cases, a work that could be safely committed to none but professional hands. To command the services of a proper person for this duty a suitable compensation would have to be paid; and here is where we suspect a trouble would come in, defeating the end here suggested. The management of these and similar expositions have been in the habit of getting this sort of service performed gratuitously, and looking for its continuance may be therein disappointed, for the self-sacrificing spirit of even the most enterprising becomes after a time exhausted. But thie shonld not suffice to keep this valuable collection shut out from the public eye, Its presence would no doubt increase the receipts of the Institute heyond the coet of eecuring it. In addition to this collection of the State Geological Society, or, in its absence, the splendid collection of Henry G, Hanks, might ata amall outlay be secured for the uses of the Fair, This collection ie very valnable and extensive, having been selected witb care, and filling 40 large show cases. The Institute could hardly do less than procure this, engaging the owner ‘to look after it while being displayed, and also give his attention, if need be, to other minerals on exhibition. In our minerale repose the sources of our peculiar wealth, and to have them omitted or madequately represented in a display of this kind, would evince a want of appreciation of their importance as well as a lack of State pride. We require these mineral products to be presented for inspection on these public occasions not somuch as curiosities as for their economic and commercial values. Many of them are becoming important in our manufactures and useful arts and should therefore be studied and made widely known. In a large and utilitarian sense iron may be more valuable than gold, and a paving-stone of more importance than a diamond, Bros for supplying the U. S, mints with eilver bullion were opened on the 24th inst., 600,000 onnces were offered. San Francisco hids were declined, heing iu excess of market rates. The largest proportion of silver coinage during the month of August will be done at the Philadelphia