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Knight's Mechanical Encyclopedia (ed. Knight) 20 0 Browse Search
Harper's Encyclopedia of United States History (ed. Benson Lossing) 2 0 Browse Search
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Harper's Encyclopedia of United States History (ed. Benson Lossing), Babbitt, Isaac, 1799-1862 (search)
Babbitt, Isaac, 1799-1862 Inventor; born in Taunton, Mass., July 26, 1799. About 1831 he made, in Taunton, the first Britannia-ware manufactured in the United States, and in 1839 he invented the anti-friction metal which bears his name. Congress gave him $20,000 for his invention; and he took out patents in England (1844) and Russia (1847). He died in Somerville, Mass., May 26, 1862.
Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
tinned it will take the Babbitt, but it must be pretty hot before the Babbitt is poured in. Babbitt's English Patent gives the proportions : — Tin50 Antimony5 Copper1 Birkholz's metal : lored alloy. Argentum mosaicum. Artimourantico.Parisian white metal. Aurum mosaicum.Petong. Babbitt metal.Pewter. Bath metal.Pewterer's solder. Bell-metal.Pewterer's temper. Biddery ware.Plumbome variations are found in the formulas, comparatively few agreeing even in the composition of Babbitt's metal, patented in 1839, and so much used throughout this country and in Europe. The followif several: — Tin.Antimony.Copper.Zinc.Lead.Iron.Arsenic.Glass.Borax.Sulphur.Pruss. Potassa Babbitt's5051 Another formula1021 Fenton's101010 Belgian, for objects exposed to friction40.5200.25 of vulcanized rubber placed perpendicularly to the casings, the whole being bolted together. Babbitt's armor-plating. Brady's method of Affixing defensive armorplates, March 3, 1863, is by att
Knight's Mechanical Encyclopedia (ed. Knight), B. (search)
B. Bab′bitt-met′al. An alloy, consisting of 9 parts of tin and 1 of copper, used for journal-boxes; so called from its inventor, Isaac Babbitt, of Boston (patent, 1839). Some variations have been made, and among the published recipes are Copper11 Regulus of antimony15 Tin1050 Another recipe substitutes zinc for antimony. The term is commonly applied to any white alloy for bearings, as distinguished from the box-metal or brasses in which copper predominates. Bab′bitt-ing-jig. （Machinery.) A tool used in babbitting the shafts and journals of machines. It holds the parts — of a harvester, for instance — in their respective positions, and also in proper relation to their boxings, so that the anti-friction metal may be run around each of the journals in succession. Ba′by-jump′er. A cradle, basket, or sling in which a child is suspended. The suspensory cord is usually adjustable as to length, and, being elastic, permits a saltatory motion. B
Knight's Mechanical Encyclopedia (ed. Knight), H. (search)
g 4 1/3 inches diameter, with a travel of 18 inches, independent of the cross-slide. This drill-spindle is driven by means of miter-gears and shafting from a cone placed on the top of the upper cross-brace. The revolving table is driven by means of a 6-inch belt running on a 5-speeded cone, the smallest pulley of which is 17 inches diameter, the largest 34 inches, strongly back-geared in such manner as to allow 20 different speeds. The conical bearing of the revolving table is lined with Babbitt metal. By placing the uprights with cross-slide near the revolving table, the drill may be placed at any point within the surface of a diameter of 12 feet; while in the same position the other head may be used for the purpose of boring, facing, or turning anything of the same size. By moving back the uprights near the ends of the cheek-pieces the machine is capable of boring, facing, or turning anything up to 24 feet diameter. The main casting, in which the table revolves, is 10 feet 4 i
Knight's Mechanical Encyclopedia (ed. Knight), J. (search)
e, to lift the journal to be lubricated; and, secondly, by its fluidity to form a liquid bed or cushion between the journal and its box, on which the journal may rest in its revolution without touching the metal of the box at all. Water-bearing for steps and shafts is described in Bramah's English planingmachine patent, 1802. He describes it as a liquid bearing for steps of vertical shafts, and makes it adjustable by pumping in liquid. Known also as palier glissant; hydraulic pivot. Babbitt's Anti-attrition Metal. Melt 4 lbs. copper; add, by degrees, 12 lbs. best banca tin, 8 lbs. regulus of antimony, and 12 lbs. more of tin. After 4 or 5 lbs. tin have been added, reduce the heat to a dull red, then add the remainder of the metal as above. This composition is termed hardening; for lining, take 1 lb. of this hardening, melt with it 2 lbs. banca tin, which produces the lining metal for use. Hence, the proportions for lining metal are 4 lbs. of copper, 8 of regulus of antimony
Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
Plummer-blocks. Plum′mer-block. （Machinery.) An adjustable bearing for journals. A B, Fig. 3843, are elevations (the latter partly in section) and C D plans of two plummer-blocks. That shown at A C is secured to a bed-plate n by screw bolts and nuts a a, the two parts b c of the block, when in position, being united by the screw-bolts d e, by means of which they may be approached toward each other to compensate for wear of the soft metal lining f. This is composed of brass, Babbitt metal, or other composition inclosed within the hard metal casing g, which fits into a cavity in each of the parts b c, and is adjusted or removed by means of the screws h. i. The bed-plate is made fast by bolts at n n. The general arrangements of the blocks C D are identical with those above described, but the lower half is fastened directly to its support by square bolt and nut or bolt and key connection; the bolts uniting the upper and lower halves are also keyed at k l. E shows a plumm
Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
concave, those of the box bearing being convex, so as to form a species of ball and socket joint, and allow the box to adjust itself to the alignment of the shaft. Shafting. Shafting. The box is self-lubricating; the oil, after being drawn up from a reservoir below by the rotation of the shaft, and performing its office, is again returned to the reservoir, the drip-cup being dispensed with. Plummer-block. Fig. 4901 is a cast-iron plummer-block; it is lined with gunmetal or Babbitt metal, and supported on a wall-plate having snugs between which the block fits, and is adjusted in line with the shaft by cotters driven between its ends and the snugs. Fig. 4902 is a form of flexible shafting, avoiding the use of gearing. See also flexible coupling, page 882. It sometimes becomes necessary to take down a section of shafting, drive out keys, and remove couplings, merely to slip on a pulley. To obviate this necessity, pulleys have been made in sections, to be keyed