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Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
late, and shielding the paper from the adjoining lines. This series of addresses forms a mechanical record on which changes may be made as they become necessary. This patent was reissued January 30, 1866, and was extended to the year 1872. Campbell, January 20, 1863. The addresses are set up in parallel columns, and are secured in a common chase. The machine is supported over the chase by end-pieces, and is automatically advanced after each depression of the platen. Resting upon ways whng held above the form, the platen is depressed by a treadle and the impression obtained. On releasing the treadle the spring raises the platen, and the pawl turns the cylinder one tooth, bringing the next name in series beneath the platen. Campbell, January 17, 1860, patented a machine for printing addresses on the margins of newspapers, simultaneously with the printing of the newspapers, by means of cells or boxes, containing the addresses set up in type and conveyed to the form by means
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
de. After the sheet is punctured, it is laid on so that the points pass through the same holes. Perfecting-presses sometimes use points to perforate the printed sheets, and the point-holes serve as guides for feeding to a folding-machine. Campbell's single-cylinder book-press is provided with electric points, and the electric circuit must be completed by bringing the perforations over the needles before the feeding can go on. 17. (Harness.) A short strap stitched to a wide one for tho strata; these, like two wedges, overlap to form a single stratum of uniform thickness throughout. There is one inking apparatus on each side of the cylinder. As many as fourteen distributing and inking rollers may be used with this press. Campbell press. A large number of small job-presses have been built by American mechanics, and are capable of doing excellent work at very high speed. Among these may be mentioned the Gordon, Globe, Liberty, Universal, Cincinnati, and others, adapte
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
posed mee yt I am resolved never to ride up, again in a coach. How the knights and ladies, of whom, according to his account, his fellow-passengers were made up, stood it, does not appear. In 1677 there was a Chester, in 1679 a Birmingham, and in 1680 a Bedford coach. In 1682 the journey between Nottingham and London occupied four days (130 miles). The coaches had projections, called boots, on each side, where passengers sat with their backs to the body of the carriage In 1678, Provost Campbell established a coach to run from Glasgow to Edinburgh, drawn by six able horses, to leave Edinboroa ilk Monday morning and return again (God willing) ilk Saturday night. In 1706 the time between London and York, by coach, was four days, and in 1784 John Dale notified the public that a coach would set out from Edinburgh to London (400 miles） toward the end of each week, and perform the journey in nine days being three days less than any coach that travels that road. Twenty years later, ho
Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
ci of that ellipse); the inclination of the pole to the plane of the ecliptic, and the constancy of the pole during the entire yearly revolution; the apparent movement through the constellations of the zodiac; the phenomena of eclipses, day and night, sunrise and sunset, and the seasons; the varying declination of the sun; the equation of time; the motions and phases of the moon; and affording a model whereon to illustrate the theory of the tides, lunar disturbances, etc. See No. 66,791, Campbell, July 26, 1867. In Davis's tellurium (Fig. 6282), a ball S′ representing the sun is attached to an upright shaft rotated by a crank through the medium of intermediate gearing, and passing through a sleeve rotated by gearing driven by the same crank, and carrying a toothed disk k engaging a rod passing through a horizontal tubular arm attached to and at right angles to the sleeve. The rod has a series of wheels at its outer end, which impart a rotary motion to the ball representing the e
Knight's Mechanical Encyclopedia (ed. Knight), U. (search)
commerce as Corosso nuts. Vegetable-slicer. Veg′e-ta-ble-parch′ment. A substance produced by immersing unsized paper in sulphuric acid diluted with about one half its volume of water. Remaining acid is neutralized by an alkali. This closes the pores of the paper, producing apparently a change in its molecular constitution without chemical alteration, and the product closely resembles animal parchment both in its appearance and properties. Papyrine. See parch-ment-paper. Mr. Colin Campbell treats the paper with a strong solution of alum, and dries it thoroughly, before dipping in the acid. The alum prevents the action of the acid from being so rapid as before, and renders the whole operation more manageable. Paper which has been printed on can be converted into vegetableparchment if treated in this way. He proposes to make parchment-paper in endless lengths by connecting the alum and sulphuric-acid bath with the paperma-chine. Vegetable-slicer. Veg′e-ta-ble-sli