The Harnkss Makkrs' Ciidi:. 69 



USEFUL RECIPES. 



A Suitable Cement for Joining thk Si-i.k ks of Machink 

 Belts. — Take lib. of best French t^lue, break it u[) and soak il 

 in just enough water to cover for 12 hours, then {)our olf the un- 

 absorbed water, and brin<; the ^due to a licjuiil state bv heat. The 

 two surfaces to be joined must each receive a thin cuatini^ ; tlie\ 

 are then joined, and immedJately put under a press. 



Cement for Joining Leather. — Soak for one chiy, one poun.l 

 of common glue in enough water to cover, and one ])nund of ismghiss 

 in ale droppings, then mix together and lie.il gently until boilitig ; 

 at this point add a little pure tannin, and keep boiling fcjr half-;in- 

 hour. If the glue and isinglass, when mixed, be too thick, add 

 water. This cement should be used warm, and the jointed leather 

 pressed tightly together for 12 hours. — " Chemical Recipes." 



Paste for Patent Leather. — The following is a French recipe 

 for preserving the gloss of patent leather: — Melt pure wax over a 

 water bath, place on a moderate coal fir?, add first some olive oil, 

 then some lard, and mix intimately by stirring ; next add some 

 oil of turpentine, and finally some oil of lavender, fill the resulting 

 paste in boxes, where, on solidifying, the necessarv consistency will 

 be acquired. To restore the gloss to the leather, apply a little of 

 the paste, and rub with a linen rag. This will keep the leather soft 

 and prevent cracking. 



Permanent Paste is made by adding to each half-pint of flour 

 paste, without alum, 15 grains of corrosive sublimate, previously 

 rubbed to powder in a mortar, the whole to be well mixed ; this, 

 if prevented from drying by being kept in a covered i)ot, remains 

 good any length of time, and is therefore convenient ; but unfor- 

 tunately it is extremely poisonous, though its excessively nauseous 

 taste would prevent it being swallowed .accidentlv. It possesses the 

 great advantage of not being liable to the attacks of insects. 



To Join Leather. — By adding a little vinegar to ordinary glue, 

 any two substances, such as leather and iron, may be effectively 

 joined. 



Waterproof Glue. — 10 parts linoleate of manganese, 20 parts 

 best white glue, 5 parts water, 2 parts yellow oxide of lead. Soak 

 the glue in the water until the latter has become absorbed, then 

 gently heat it to render it fluid ; meanwhile heat the linoleate of 

 manganese to about 400 degrees Fah., and stir it in the hot melted 

 glue. When well incorporated, mix in the lead oxide, and, if too 

 thick, thin with more hot linoleate of manganese. As this compound 

 dries very quickly, it is best to use it hot and freshly prepared, as it 

 does not readily melt when heated, owing to the oxidizing action 

 of the lead salt on the constituents of the linoleate, whereby 

 insoluble linoxide is formed. — " Chemical Recipes." 



A Good Black, Especially for Chamois Skins. — Four ounces 

 of ground nut galls, one pound of green nut shell (butter nut pods) 

 are- boiled in two quarts of water for one hour, and strained. Then 

 one ounce of iron filings, half an ounce of common salt, and one 

 quart of vinegar are mixed, allowed to stand for an hour, and added. 



