A cyclopaedia of practical receipts, and collateral information in the arts, manufactures, professions, and trades, including medicine, pharmacy, and domestic economy : designed as a comprehensive supplement to the pharmacopœias, and general book of reference for the manufacturer, tradesman, amateur, and heads of families / by Arnold J. Cooley.

  • Arnold James Cooley
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: A cyclopaedia of practical receipts, and collateral information in the arts, manufactures, professions, and trades, including medicine, pharmacy, and domestic economy : designed as a comprehensive supplement to the pharmacopœias, and general book of reference for the manufacturer, tradesman, amateur, and heads of families / by Arnold J. Cooley. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    1278/1368 (page 1260)
    solve this in oil of turpentine. Used for prints, &c. VARNISH (Japan). Pale amber or co]>al varnish. Used for japanning tin, papier maclie, &c. VARNISH (Lac). Prep. 1. Pale seed- lac (or sliell-lac), 8 oz.; rectified spirit, 1 quart ; dissolve. 2. Substitute lac bleached with chlorine for seed lac. Both are very tough, hard, and durable, but quite inflexible. Wood naphtha may be substituted for spirit. Used for pictures, metal, wood, or leather, and particularly for toys. VARNISH (Lac, — Aqueous). Prep. From pale shell-lac, 5 oz. ; borax, 1 oz. ; water, 1 pint; digest at nearly the boiling point until dissolved; then strain. Equal to the more costly spirit varnish for many purposes; it is an excellent vehicle for water colours, inks, &c.; when dry it is waterproof. VARNISH (Lac,—Coloured). Syn. Lac- quer, Brasswork Varnish, S(c. Prep. 1. Take of turmeric (ground), 1 lb. ; rectified spirit, 2 gall.; macerate for a week, strain with expression, and add to the tincture, gamboge, 1^ oz.; pale shell-lac, | lb.; gum sandarach, Z\lb. ; when dissolved, strain, and further add of good turpentine varnish, 1 quart. Gold coloured. 2. Seed lac, 3 oz.; turmeric, 1 oz. ; dragons blood, j oz. ; rectified spirit, 1 pint; digest for a week, frequently shaking, then decant the clear portion. Deep gold coloured. 3. Spanish annotta, 3 lb. ; dragon's blood, 1 lb. ; gum sandarach, 3^ lb. ; rec- tified spirit, 2 gall. ; turpentine varnish, 1 quart; as before. Red coloured. 4. Gamboge, 1 oz. ; Cape aloes, 3 oz. ; pale shell-lac, I lb. ; rectified spirit, 2 gall.; as before. Pale brass coloured. 5. Seed lac, dragon's blood, annotta, and gamboge, of each ,^ lb.: gum sandarach, 2 oz. ; saffron, 1 oz.; rectified spirit, 1 gall. Re- sembles the last. Obs. Lacquers are used upon polished metals and wood to impart to them the appearance of gold. Articles in brass, tin- plate, and pewter, or which are covered with tinfoil, are more especially so treated. As lacquers are required of different depths and shades of colour, it is best to keep a concentrated solution of each of the colour- ing ingredients ready, so that it may be added, at any time, to produce any desired tint. VARNISH (Mahogany). Prep. From gum anime ( sorts ), 8 lb. ; clarified oil, 3 gall.; litharge and powdered dried sugar of lead, of each, ^ lb.; proceed as for body varnish, and thin with oil of turpen- tine, 5 gall., or q. s. VARNISH (Mastic). Syn. Picture Var- nish, Turpentine do., Tingry's Essence do. Prep. 1. Take of pale and picked gum mastic, 5 lb.; glass (pounded as small as barley, and well washed and dried), 3 lb.; finest newly rectified oil of turpentine (lukewarm), 2 gall.; put them into a clean 4 gall, tin bottle or can, bung down se- curely, and keep rolling it backwards and forwards pretty smartly on a counter, or any other solid place, for at least 4 hours; when, if the gum is all dissolved, the varnish may be decanted, strained through muslin into another bottle, and allowed to settle; if the solution is still incomplete, the agitation must be continued for some time longer, or a.gentle vitsxmih applied as well. Very fine. 2. (Second Quality.) From mastic, 4 lb. ; oil of turpentine, 2 gall.; dissolve with heat. Obs. Mastic varnish is much used for pictures, &c.; when good, it is tough, hard, brilliant, and colourless. It greatly im- proves by age, and, when possible, should never be used before it has been made at least a twelvemonth. Should it get chilled, 1 lb. oi well-washed siliceous sand should be made moderately hot, and added to each gallon, vihich must tlien be well agitated for 5 minutes, aad afterwards al- lowed to settle. The present high price of the best mastic (15s. to 16s. per lb.) almost precludes its use for varnishes. VARNISH (Oak). Syn. Wainscot Var- nish, Common Turpentine do., 8(c. Prep. I. Clear pale rosin, 3ilb.; oil of turpentine, 1 gall.; dissolve. 2. To the last add of Canada balsam, 1 pint. Both are cheap and excellent com- mon varnishes for wood or metal. VARNISH (Od). The finer qualities are noticed under Amber, Body, Carriage, and Copal Varnish; the following produces the ordinary oil varnish of the shops:—Take of good clear rosin, 3 lb.; drying oil, | gall. ; melt, and thin with oil of turpentine, 2 quarts. A good and durable varnish for common woik. VARNISH (Painter's). See Carriage, Copal, Mahogany, Oak, Oil, and other var- nishes. The selection depending greatly on the colour and quality of the work. VARNISH (Patent Leather). This is carefully prepared drying oil. The skins being stretched on a board, and every trace of grease being removed from them by means of a mixture of fuller's earth and water, they are ready to receive the varnish,