The Meta-Encyclopedia

Single-source entries: T (52)

Each of these 11 subjects appears in only one of the 6 encyclopedias on this shelf. None is long enough to carry a page by itself, so they are gathered here by letter. Anything that grows moves out to a page of its own.

To Clean Silver Plate

The tarnish can be removed by dipping the article from one to fifteen minutes in a pickle of the following composition: Rain water, 2 gallons, and cyanide of potash 1/2 pound; dissolve together, and fill into a stone jug or jar, and close tightly. The article after having been immersed, must be taken out and thoroughly rinsed in several waters, then dried with fine, clean sawdust. Tarnished jewelry can be speedily restored by this process; but be careful to thoroughly remove the alkali, otherwise it will corrode the goods.

Only in American Watchmaker and Jeweler

To Dissolve Soft Solder

Nitric acid may be used safely for gold not lower than 12k, and is very effective. The following is suitable for all grades of gold and silver: Green copperas, 2 oz; saltpeter, 1 oz., reduced to a powder and boiled in 10 oz. of water. It will become crystalized on cooling. Dissolve these crystals by the addition of 8 parts of spirits of salts to each part of crystals, using an earthenware vessel. Add 4 parts of boiling water, keep the mixture hot, and immerse the article to be operated upon, and the solder will be entirely removed without injuring the work.

Only in American Watchmaker and Jeweler

To Prevent Rust

Rub the article with a mixture of lime and oil, or a mixture of equal parts of carbolic acid and olive oil, or with plumbago. Anti-rust Varnish for Steel. The rusting of steel and iron tools and instruments is very perfectly prevented by coating them with a varnish made by dissolving 1 part while wax in 15 parts benzine, and applying with a brush. The very thin layer of wax forms a perfect covering for bright tools and when desired is very easily removed. Browning or Bronzing for Steel. Aqua fortis and sweet spirits niter, each half an ounce, sulphate copper 2 ounces, water 30 ounces, tincture muriate of iron 1 ounce. Mix. To Protect Steel from Rust. Immerse in a solution of carbonate of potash for a few minutes and it will not rust for years, not even when exposed to damp atmosphere.

Only in American Watchmaker and Jeweler

To Remove Rust

Kerosene oil (refined petroleum), or benzine are the best agents for the removal of rust, where the object is not pitted. When pitted, however, it can only be removed by mechanical means such as scouring with emery powder and oil.

Only in American Watchmaker and Jeweler

To Solder Broken Broaches

Steel broaches and other tools are soldered by cleaning well the parts broken, then dipping them into a solution of sulphate of copper, and soldering them with ordinary soft solder. The joint is a good one and will stand ordinary hard wear.

Only in American Watchmaker and Jeweler

To Work Hard Steel

If steel is rather hard under the hammer, when heated to the proper cherry red, it may be covered with salt and hammered to about the shape desired. More softness can then be obtained, if required to give a further finish to the shape, by sprinkling it with a mixture of salt, blue vitriol, sal-ammoniac, saltpeter and alum; make cherry red again, sprinkle with this mixture, and hammer into shape. This process may be repeated until entirely finished. When ready, the steel is hardened in a solution of the same mixture. This method is recommended by prominent workers.

Only in American Watchmaker and Jeweler

Toad

in zoology, the popular name in the 19th century . Other edifices are the town hall (1864 ), in late Venetian of any species of the family Bufonidæ, style, with a tower of 80 feet, a market which is almost universally distributed, grammar school house (1830), and the gramm ("free" in name but not in fact), which, founded by Peter Blundel in 1604, and familiar to every reader of Blackmore's "Lorna Doone," has given place to a modern structure. The historic building, however, will remain intact. The cloth trade has declined since the 17th century, and lace making is now the leading industry. Pop. (1901) 10,382.

Only in Collier's New Encyclopedia

Toadstool

. See Mushroom

Only in Aiton's Encyclopedia

Toast

a slice of bread parched or slightly scorched before the open fire. The digestive juices attack the toast even more readily than stale bread. For this reason, it is a favorite diet for invalids, or when a hearty meal is not desired. It was the custom in the sixteenth century to place a piece of toast in the bottom of the wine glass. In this way the term passed to a drink taken at table in recognition of an honored guest or the reigning belle of the season. By another transition, the term is applied to a sentiment to which an after-dinner speaker is called to respond. See Bread ; Food

Only in Aiton's Encyclopedia

Tobago

the most S. of the Windward Islands; belonging to Great Britain; 75 miles S. E. of Grenada and 18½ miles N. E. of Trinidad; 24 miles long and 7 miles wide; pop. about 21,000. The island was discovered by Columbus in 1498, and named by him Assumption; the name of Tobago is supposed to have arisen from the free use of tobacco by the Caribs when first visited by Europeans. It has been frequently contested between Dutch, Spaniards, and French, but came into British possession in 1763. The island is volcanic, its surface being irregular and picturesque, and abounding in conical hills and spurs, all connected by a ridge running through the interior, the greatest prisoners. elevation of which is 1,800 feet above the From the high ridge level of the sea. descend deep and narrow ravines, which terminate in small alluvial plains. Scarborough is its chief town, pleasantly situated on the S. side, and at the base of a conical hill rising 425 feet in altitude, crowned by Fort King George, now without garrison. The chief exports are rum, molasses, cocoanuts and livestock to the amount of from $100,000 to $200,000. The imports run from $100,000 to $150,- 000. The island was united with the colony of Trinidad in 1889, and has a commissioner appointed by the governor.

Only in Collier's New Encyclopedia

Tobin-bronze

See DELTA-METAL. Tombac is a cheap gilding metal for common jewelry, and purposes where it is desired to substitute for the nobler metals a cheap imitation. Those given in the following table are made by first fusing the copper and adding the remainder afterward in the usual way-except in the case of white tombac: in this alloy the two metals copper and arsenic are melted together in a closed crucible, and well covered with common salt to prevent oxidation. Kinds of Tombac. Copper. Zinc. Tin. Arsenic. Brass. Lead. Gold, imitation..... 16 1 1 Silver-white, for buttons, etc. ..... 75 25 Red..... 11 1 Gilding for common jewelry..... 16 1 to 1 1/4 Gilding for common jewelry..... 16 6 Gilding for common jewelry..... 16 3 to 4 Gilding for common jewelry..... 82 18 1 3 French imitation gold..... 80 17 3 Yellow, gilt ornaments..... 85.3 14.7

Only in The Encyclopedia of Founding