OCR Text |
Show buffstick charged with rouge or very fine ornery and other kinds more or less line. The following mixture is excellent for renovating turnifched goods: Bicarbonate of soda, 2 ounce; chloride of lime, 1 ounce: common salt, 1 ounce; water, 18 ounces. Mix well togother and apply with a soft brush. Carbolic acid is recommended for moisfe. ening the tools with which metals or worked.' The efficiency of the grindstone even is said to be increased by the use of acid. The dark and impure acid caa be used for this purpose. Good results are obtnlned by hardening small steel articles in etroleum. For pinions, arbors, pallets, et., take a glass, hard temper. Worm the article and rub it with soap, after which heat to a red (not white) heat, and at once throw into petroleum. petro-leum. Dronlor claims to have discovered a simple sim-ple method to make bronze malleable; it consists in the addition of from X to 2 per cent, of mercury, and appears to act mechanically me-chanically rather than chemically. It is added to one of the metals of which tb alloy U made. To prepare a good gold varniah for physical physi-cal instruments, etc., tuke gum shellac, iu grains, pulverized, 90 parts; copal, 30 parts; dragon's blood, 1 part; red snuudera wood, 1 part; pounded glass, 10 parts; strong alcohol, al-cohol, (KX) parts. After Bufllcicnt maceration macera-tion filter. ,- To clean brass articles, make a mixture : in a stoneware vessel of one part common hydrochloric acid, und one-half part sulphuric sul-phuric acid; dip the 'articles into it, rinso and rub with sawdust. If the brass Is greasy, it should first be dipped Into u solution of potash or soda in warm water. ' According to Tho Revue Induxtrielte medals are bronzed in tho Paris mint by boiling them in an untinncd copper kettle In a Quid composed of 000 parts pulverized verdigris nnd 473 parts pulverized salum-moniac, salum-moniac, dissolved In 160 parts strong vine-gnr vine-gnr and 2,000 parts of water. For preparing a gold colored varnish pul verize one drachm of saffron and one-half drachm of dragon's blood, and put these ingredients into one pint of spirits of wine. Add two ounces of gum shellac and two drachms of koccotrlno nloes. Dissolve the whole by fjentlo heat, Jewelers' Circular. HINTS FOR JEWELERS. To nip.ke soft gold solder, melt equal parts of 14-karat gold aud silver solder, and hammer it Into thin sheet upon the anvil; cut iuto pellets. Benzine is often recommended for clean-. clean-. tng watches. , Kelined benzine, deodorized, , called lucene, is the only article that should be nsed for the purpose. It is advisable to use silver solder for i . low grade, say 0 or 8-karat gold goods, which consists of two parts fine silver and ftne brass, with the addition of a little tin. -Euniiiibcrs, to be kept in good condition, should have tlieir surfaces touched up i tto.51 &no V tini'i by pasjjig over them v. |