Fireplace insert

Invented in 1896 by Joab R. Donaldson of Oliphant Furnace, Pennsylvania, USA, the fireplace insert is a device inserted into an existing masonry or prefabricated wood fireplace. Joab was a 59-year-old coal miner and father of fourteen at the time of his patent. He came upon the idea as a means of using coke (a fine particle sized coal) and incorporating the use of an electric blower to improve the efficiency. The selection of coke and coal tailings as a primary fuel enabled low income families to heat their Appalachian homes with small-size coal that they could easily dig for themselves in their own back yards.

单词	Fireplace insert
释义	Fireplace insert 英语百科 Fireplace insert Invented in 1896 by Joab R. Donaldson of Oliphant Furnace, Pennsylvania, USA, the fireplace insert is a device inserted into an existing masonry or prefabricated wood fireplace. Joab was a 59-year-old coal miner and father of fourteen at the time of his patent. He came upon the idea as a means of using coke (a fine particle sized coal) and incorporating the use of an electric blower to improve the efficiency. The selection of coke and coal tailings as a primary fuel enabled low income families to heat their Appalachian homes with small-size coal that they could easily dig for themselves in their own back yards.
随便看	mole的意思 mole density的意思 Moledet的意思 moledets的意思 mole dilution enthalpy的意思 mole dissolution enthalpy的意思 mole ditcher的意思 Moledo的意思 moledrain的意思 mole drain的意思 mole drainage的意思 mole drainage plough的意思 mole drainer的意思 mole electronics的意思 moleelectronics的意思 mole entropy of mixing的意思 molefe的意思 molefi的意思 Mole fraction的意思 molefraction的意思 mole fraction of B的意思 mole gas constant的意思 Molegbe的意思 Molegraphy的意思 molegrips的意思