Knight's New Mechanical Dictionary: A Description of Tools, Instruments, Machines, Processes, and Engineering. With Indexical References to Technical Journals (1876-1880.)
Houghton, Mifflin, 1884 - 960 Seiten
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Seite 19 - ... motion of the drum will not be communicated to the alcohol counter, but in proportion as the lever ascends a greater proportion of the motion of the drum will be communicated to the alcohol counter, and this motion is rendered strictly proportionate to the alcohol contained in the liquid, allowance being made in the instrument for the change of volume due to chemical affinity between the two liquids.
Seite 280 - ... more electricity of course " induced in the respective coilings ; a,nd while a mutual " and accelerating force is thus produced in this manner " between the electro-magnets and the armatures, an " additional or secondary current is at the same time " induced in the coiling of the electro-magnets by the " motion of the armatures, the said current flowing in the " same direction as that of the primary current, after having
Seite 103 - The patent blast gas furnace consists of two parts, namely, of a particular form of gas burner, which is supplied with gas at the usual pressure, and with a blast of common air, supplied by bellows or a blowing machine, at about ten times the pressure at which the gas is supplied. Secondly, of a furnace which is built up...
Seite 93 - CEMENT FOR LEATHER BELTING. — Common glue and isinglass, equal parts, soaked for ten hours in just enough water to cover them ; bring gradually to a boiling heat, and add pure tannin until the whole becomes ropy or appears like the white of eggs. Buff off the surfaces to be joined, apply this cement warm, and clamp firmly.
Seite 103 - Into the upper chamber, gas at ordinary pressure is allowed to pass by the tube marked GAS. Into the lower chamber, air is forced by the tube marked AIR. The upper part of the burner is an inch thick in the metal. Through this solid roof holes are bored for the escape of the gas. The experiments described hereafter were chiefly made with a burner that contained sixteen holes, arranged as shown in fig.
Seite 403 - Put into an earthen mortar some Gold leaf, with a little honey, or thick gum-water ; and grind the mixture, till the Gold is reduced to extremely minute particles. When this is done, a little warm water will wash out the honey or gum, leaving the Gold behind in a pulverulent state.
Seite 280 - ... are excited in the said manner, the more will the armatures be excited, and more electricity of course induced in the respective coilings; and while a mutual and accelerating force is thus produced in this manner between the electromagnets and the armatures, an additional or secondary current is at the same time induced in the coiling of the electro-magnets by the motion of the armatures, the said current flowing in the same direction as that of the primary current after having passed the commutator.
Seite 175 - CC, being hollow half their length, admit of the rods running from the ivory tip, E, to slide in and out like a telescope, which they are made to do by turning the small wheel, F. This telescoping of the rods keeps up perfect current connection, and at the same time causes a slow contraction of the wire cautery loop at E, the ends of the wire being secured in the ivory clamps, G, on the rods, C C.
Seite 208 - ... of stretched strings, Mr. Lissajous has contrived an ingenious apparatus which he calls his comparator. This, which is represented in the accompanying figure, consists of a diapason, to one limb of which is attached the object glass of a compound microscope ; the body of the microscope being detached and supported by an independent stand. If the diapason be thrown into vibration, the image of any small object seen through the microscope will appear to have a similar motion, which will be magnified...