Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Barron or search for Barron in all documents.

Your search returned 4 results in 3 document sections:

Knight's Mechanical Encyclopedia (ed. Knight), L. (search)
hich, in either position, locked or unlocked, falls into one of the notches of the bolt. The tumbler must first be lifted by the key, releasing the stump from the notch in the bolt before the key can act on the latter to turn it either way. Barron's tumbler-lock was patented in 1778. Its principle consisted in an arrangement to allow a stump on the tumbler to pass through an opening in the bolt, or a stump on the bolt to pass through an opening in the tumbler. The former arrangement isating or slot in the bolt, permitting the latter to slide freely; whereas, if an improper key be used, they will be either lifted too high or too low, so that it cannot pass. The patents granted for locks, both in England and this country, since Barron's time, have been very numerous. Brahmah's, patented in England, 1784, is shown at H. It has a central barrel a, having grooves in which are a number of sliders c c, whose ends rest against the spring. Each of these is notched at a different pa
Knight's Mechanical Encyclopedia (ed. Knight), N. (search)
nickel with a flux for coating metal plates. Junot, 1852, alloyed silicum, titanium, tungsten, etc., with nickel for electro deposition. Thomas, 1854, used ferro-cyanide of potassium and nitromuriatic acid to obtain a nickel solution for the battery. In 1855 he used the same, with carbonate of ammonia and oxide of alumina. Cheatley, 1855, deposited alloys of nickel by a battery (British patent 1543, of 1855). An alloy of nickel was applied to iron plates by friction and heat by Barron in 1856 Shepard, 1858, deposited an alloy of silver and nickel. The solution is made by adding carbonate of ammonia to a solution of nitrate of silver, then a similar solution of carbonate of nickel in carbonate of ammonia. An anode of one part silver and two parts nickel is used Cyanide of potassium may be used in the battery. Adams, United States patent No. 57, 271, 1866, coats gastips with nickel. Same, 1869, uses solution of sulphate of nickel in solution of sulphite or bisulphi
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
hening, then increasing their soundness, and, of course, as it neutralizes phosphorus, preventing red-shortness. k. Tungsten steel, a steel containing tungsten. Its production is similar to that of chromium steel, tungsten or Wolframite being substituted for the chromium compounds. Its properties are also similar, and it is an excellent tool-steel, though great difficulty is experienced in obtaining uniformity in the product. It is also remarkable for its great magnetic capacity. In Barron's process, tools, such as axes, hatchets, and hoes, are cast from pig-iron. They are then placed in rotating drums to remove the roughness, and afterward heated in iron boxes, with oxide of iron and other materials to remove the carbon. They are next placed in a large retort and subjected to the action of gasoline, and also of charcoal gas, generated in two retorts, by the action of which they are in a few minutes converted into steel, and are afterward ground, polished, and tempered. M