the type 6 deputies relighter lamp was certified for mining use between the great wars.
it became most widely used in the uk from nationalisation in 1947 when it was adopted by the ministry of power as the standard gas testing lamp in uk coal mines.
in 1964 we prototyped the GR6 which is a modified type 6. this adopted the garforth mechanism for gas testing.
the type 6 began to be replaced by the gr6 and then the gr6s from the mid 60's to the mid 70's. the gr6s is still used in uk mines today.
regards david mather
Daniel & Sara wrote:
Hi there, I recently purchased a lamp with the markings M & Q on the serial plate. I’ve searched the web and can’t find any information pertaining to this model. Any help would be greatly appreciated.