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Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
the meeting of several heading-joints in one continued line, which is sometimes the case in floors and doors. Beak′--i-ron. 1. (Sheet-iron Working.) Beak, Beck, Bick-iron, Bickern. An anvil with a long beak adapted to reach the interior surfaces of sheetmetal ware. Beak-irons. a. A tool with a long beak, used for ris called moleskin. Be-casse′. （Nautical.) A large Spanish boat. Beche. （Well-boring.) A tool for grabbing a rod when it has broken in the bore. Beck. A vat or vessel used in a dye-house. A dye-beck contains a dyeing solution; a soap-beck contains soap-suds. See back. Beck′et. （Nautical.) A bracketBeck′et. （Nautical.) A bracket, pocket, loop, or rope to hold spars, ropes, etc., in position, to prevent their swaying about or lying around loose. Bed. 1. (Masonry.) a. The line of the direction of the natural strata of stones in the quarry. b. The horizontal surface of an ashlar or buildingstone worked for building or in position; the re
Knight's Mechanical Encyclopedia (ed. Knight), H. (search)
.Canal. Barrel-filling gage.Canal-lift. Barrel-washer.Canal-lock. Bascule.Canal-lock gate. Basin.Cane. Hydraulic. Batardeau.Cap. Bath.Catch-basin. Bath-heater.Catch-feeder. Bath-tub.Catch-water drain. Bay.Catch-work. Bearing-pile.Cauf. Beck.Centrifugal filter. Beer-cooler.Centrifugal pump. Beer-engine.Cesspipe. Beer-float.Cesspool. Beer-fountain.Chain-pump. Beer-tap.Chain-towing. Bilge-water alarm.Chamber-closet. Bilge-water discharge.Chapelet. Blast-hole.Cheek. Blower. Hydeter of Brix is that legally used in Prussia; to ascertain the specific gravity the constant number, 400, is divided by 400 + the indication for liquids lighter than water, and by 400-the indication for those heavier than water. The formula for Beck's instrument is precisely similar, substituting 170 for 400. Tralle's and Gendar's are used in the United States, the former being adopted by government for ascertaining the duty on distilled spirits. It is graduated from 0°, the indication
Knight's Mechanical Encyclopedia (ed. Knight), I. (search)
l-chamber is illuminated in the ordinary manner. The church-clock of St. Giles, in the Fields, London, was lighted April 23, 1827. For modes of lighting the gas without climbing to the tower or spire, see gas-lighting by electricity. Illuminator. Il-lu′mi-na-tor. A device to throw light upon an object in an optical instrument; such as a lens which condenses light upon an object under observation, or a lamp which throws a pencil of rays upon the micrometer wires in a telescope. Beck's opaque illuminator for high powers consists of a circular disk of thin glass placed at an angle of 45° in the axis of a microscope, receiving rays from a lateral aperture, and directing them downward upon the object. The objective is made its own condenser. The white-cloud illuminator is to transmit a subdued white light, and is sometimes a surface of pounded glass or of plaster of paris. The oblique illuminator is for directing oblique rays upon an object. This is attained by the c
Knight's Mechanical Encyclopedia (ed. Knight), M. (search)
or window-panes. The uses of mica in the mechanic arts are numerous. Among them may be cited. — Windows for stoves and lanterns. Chimneys for lamps. Ground, as a lubricator and as a packing. As a substitute for glass in spectacles, in protecting the eyes in various mechanical operations. As a substitute for glass in silvered reflectors, in places where it will be exposed to heat, as in headlights, etc. (Marshall's patent.) Mixed with varnish as a coating for wall-paper (Beck's patent), and in bronzing statuettes and other plastic articles. As a covering for roofs (Ditto's patent). Mi′cro-cous′tic. （Surgical.) An aural instrument for collecting sounds for the partially deaf. An auricle or speaking-trumpet. The Lord's Prayer (from a Micro-photograph of the original writing on glass, occupying the 1/129654 of a square inch). Mi′cro-graph. An instrument invented by Mr. Webb of London, for executing extremely minute writing and engraving; its
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
d by the friction of the hands of women. The final decorations in paint or gilding are in the commoner class of work laid on by stenciling, but in that of the finest quality the artist's brush or pencil is used, with inlaying of mother-of-pearl. Parabolic illuminators and reflectors Par-a-bol′ic Il-lu′mi-na′tor. A reflector placed over an object beneath a microscope. Its shape is that of a halfparaboloid, the object being in the focus. The interior is silvered. Fig. 3545 shows Beck's illuminator with Couch's adaptor, a b; this is jointed to admit of free vertical movement, and its lower branch is sleeved so that it may be turned by the thumb-screw c to focus the reflector on the object. It is intended especially to illuminate opaque objects. d is a parabolic reflector. Par-a-bol′ic Reflect′or. A cone of glass (d, Fig. 3545) with a paraboloidal depression which concentrates the illuminating. rays upon an object placed in the focus. A small disk mounted on
Knight's Mechanical Encyclopedia (ed. Knight), R. (search)
ced in their foci in parallel straight lines to a great distance, and for converging the heat rays from a distant object, as the sun, to a focus, and also, in connection with eye-glasses, in the reflecting-telescope, which is itself often simply denominated a reflector. See re-Flecting-telescope; catoptric light; mirror; burning-glass. The reflectors used with microscopes are various, according to the exigencies of the position, shortness of the focus, etc. Under illuminator are cited Beck's, whitecloud, side-reflector, parabolic reflector, Lieberkuhn, etc., — all forms of reflectors adapted to microscopes. Paraboloidal reflectors were employed in the lighthouses at Bidstone and Hoylake, at the entrance of the Mersey, as early as 1763. These were of wood lined with mirror glass; smaller ones of tin were also employed. At present, lighthouse reflectors are made of copper heavily plated with silver. The proper curve is imparted by beating with mallets and hammers of various
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
bbsJune 18, 1867. 74,328FalesFeb. 11, 1868. (Reissue.)3,247FalesDec 29, 1868. 108,827Rayer et al.Nov. 1, 1870. 152,618Dinsmore et al.June 30, 1874. 154,827BeckSept. 8, 1874. 160,512DinsmoreMar. 9, 1875. 1. （e.) Loop-Taker operated by Needle. No.Name.Date. 12,923RobertsonMay 22, 1855. 18,285Jenks et al.Sept. 29, 18Sept. 17, 1872. 138,399HeffleyApr. 29, 1873. 143,092NullSept. 23, 1873. 150,003DeweyApr. 21, 1874. 155,885NullOct. 13, 1874. 155,886NullOct. 13, 1874. 159,884BeckFeb. 16, 1875. 13. Regulating Speed. 13,661SingerOct. 9, 1855. 44,909ZuckermanNov. 1, 1864. 51,012BuchananNov. 21, 1865. 14. Running Stitch. 2,982BeanMar. 4, ed in a hopper, and automatically take their place in line in an inclined feedingchute, which leads them to the clinching mechanism. See patents — No. 35,666.BeckJune 24, 1862. No. 36,877.DeForestNov. 4, 1862. No. 37,124.BairdDec. 9, 1862. No. 37,992.WilmotMar. 24, 1863. No. 50,728.OlmsteadOct. 31, 1865. No. 54,939.Neum
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
atura Locorum, is a species of physical geography, and contains considerations on the dependence of temperature concurrently on latitude and elevation, and on the effect of different angles of incidence of the sun's rays in heating the ground. Beck's Thermograph. Thermometers. A. Santorio. B. Boyle. In the department of the distribution of temperature and meteorology, attention was already directed, at the end of the fifteenth and beginning of the sixteenth centuries, to the decrease ofead of mercury. Statical thermometer; a kind of air-thermometer arranged to open and close a window or ventilator by the expansion and contraction of its contained air. See thermostat. For Rutherford's instrument, see thermetograph. For Beck's instrument, see Thermograph. In Phillips's maximum thermometer, about 1/2 inch of mercury at the end of the column is separated from the rest by a minute particle of air. This index is pushed along the tube as the mercury expands, and remain
Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
to be used. Besides the purpose of separating materials of different finenesses, screens are used in hat-forming machines and brandusters (Fig. 2431); also as fire and window screens and guards, kiln-floors, panels of fences, meat-safes, dish-covers, bed-bottoms, lamp-covers, as in the safety-lamp. See also patents:— No.Name and Date. 5,005.Jenkins, March 6, 1847 (crimping). 25,578.Nutting, Sept. 27, 1859. 49,556.Zerns, August 8, 1865 (crimping). 92,949.Fisk, July 27, 1869. 108,553.Beck, Oct. 25, 1870. 117,272.Goodhue, July 25, 1871. 118,283.Seitzinger, Aug 22, 1871. 120,150.Gardner et al., Oct. 24, 1871. 121,111.Kohn, Nov. 21, 1871. 124,286.Peters, Mar. 5, 1872. 126,081.Parker, April 23, 1872. 127,227.Edge, May 28, 1872. (weaving wire-tubes). 128,438.Turnbull, June 25, 1872. 131,885.Le Ren, Oct. 1, 1872. 132,528.Farley, Oct. 29, 1872. 133,886.Peters, Dec. 10, 1872. 138,491.Field, May 6, 1873. 139,077.Parker, May 20, 1873. 140,160.Peters, June 24, 1873. Se