It consisted of a mixture of chlorate of potash, sulphur, charcoal and paraffin wax.
paraffin wax does in some situations, but is not a very tractable medium.
An outside coat of paraffin wax is now given to the coil and a wrapping of waxed paper laid on.
It was done by ruling lines on the backs with a piece of paraffin wax.
To prepare it, some castor oil is put into an earthenware jar, and about half its weight of paraffin wax shredded into it.
A piece of varnished glass tube is pushed through the cork, which should be varnished with shellac or with paraffin wax.
The cure is to soak it in paraffin wax; but temporarily it is secured by winding cotton thread round it in many directions.
paraffin wax, a mixture of solid hydrocarbons obtained from petroleum, came into use in 1854 and stearine is now used with it.
One cause of these yellow oil stains can be traced to the use of paraffin wax in the sizing of the warps.
I now consider it a better plan not to employ the method of coating with paraffin wax.
|paraffin wax |