Rensselaer Republican, Volume 20, Number 40, Rensselaer, Jasper County, 7 June 1888 — Non-Breakable Lamp Chimneys. [ARTICLE]

Non-Breakable Lamp Chimneys.

Good H tuskeepiDg. ■ Some person has studied out this way to prepare lamp chimneys so that they will not break: With a diamond cut the bulging part of the chimney with perpendicular lines at short distances apart. These cuts are said to give the glass the necessary room for expansion and contraction when quickly heated or cooled If a diamond is not available, put the chimney in a pail, for protection, and immerse it in the reservoir of water on your cook-stove when the water is cool in the morning and let it remain all day while the water is hot and all night when it will slowly cool. This is a kind of annealing process that is said to toughen the glass. The use of soap-suds is to be avoided in cleaning, and onlyclear hot water used.