I too am investigating this family and I was unsure about their occupations so I googled it and found this:
Coffins.—Excluding textile fabrics and agricultural produce, Birmingham supplies almost every article necessary for the comfort of man's life, and it is therefore not surprising that some little attention has been given to the construction of the "casket" which is to enclose his remains when dead. Coffins of wood, stone, lead, &c., have been known for centuries, but coffins of glass and coffins of brass must be ranked amongst the curiosities of our later trades. Two of the latter kind polished, lacquered, and decorated in a variety of ways, with massive handles and emblazoned shields, were made here some few years back for King Egbo Jack and another dark-skinned potentate of South Africa. "By particular request" each of these coffins were provided with four padlocks, two outside and two inside, though how to use the latter must have been a puzzle even for a dead king. The Patent Metallic Air-tight Coffin Co., whose name pretty accurately describes their productions, in 1861 introduced hermetically-sealed coffins with plate glass panels in the lid, exceedingly useful articles in case of contagious diseases, &c., &c. The trade in coffin "furniture" seems to have originated about 1760, when one ingenious "Mole" pushed it forward; and among the list of patents taken out in 1796 by a local worthy there is one for "a patent coffin," though its particular speciality could not have met with much approval, as although some thousands of bodies have been removed from our various sepultures nothing curious or rarer than rotten boards and old lead has been brought to light.
It was taken from Showell's dictonary of Birmingham 1881 and can be found
here:
http://www.gutenberg.org/files/14472/14472-h/14472-h.htmAnother interesting thing is that when searching for Ellen feek the only one I could find was in Middlesex where these references said Charles was born.