The Small End Cut from the Key is Fastened on the Pin of the Lock
To Color Tan Leather Black
An inexpensive and effective way to blacken tan leather is as follows: The leather is first rubbed with a 10-per-cent solution of tannic acid, which may be purchased at any drug store. This treatment should be applied and the leather well dried. It should be rubbed with a cloth hard enough to produce a polish, then apply a 10-per-cent solution of iron sulphate. A chemical reaction takes place as the last solution is rubbed into the leather, making it black. After this is dry, the leather can be polished in the usual way.
To Prevent Corks Sticking in Bottle Necks
Corks will always adhere to the necks of bottles containing glue or other sticky liquids, with the result that it becomes necessary to cut or dig the cork into small pieces in order to remove the contents from the bottle.
A simple and effective way to prevent a cork from sticking is to place a small piece of waxed paper on the bottle opening so that when the cork is pressed in, the paper will be between the cork and glass, as shown.
To Remove Rust Stains from Clothing
Many times when working around machinery, the clothes will come in contact with iron and get rust stains. These may be removed by using a weak solution of oxalic acid which must be applied carefully as it is highly poisonous. Sometimes the stain can be removed by washing the spot in buttermilk, in which case rubbing is necessary.