A round brass cylinder carbide fuel container with a screw cap surmounted by a short-necked cylinder at right angles to the base which seems to be a "gas chamber." The upper cylinder has at its front end a dish reflector out of the centre of which protrudes a jet, and out of which also protrudes a …
A round brass cylinder carbide fuel container with a screw cap surmounted by a short-necked cylinder at right angles to the base which seems to be a "gas chamber." The upper cylinder has at its front end a dish reflector out of the centre of which protrudes a jet, and out of which also protrudes a flint wheel spark generator for lighting the jet. Atop the cylinder is a tightly flanged hinged cap which can snap into place over and into an opening 2.0 x 1.5 cm oval; in front of the cap opening is a swivel device, probably for varying the flow through the jet. At the back of the cylinder is a hook mounted vertically by rivets and a clasp horizontally, for mounting the lamp on a miner's helmet. Marks:"Justrite/Pat, May 7, 1912/ Pat. Oct 28, 1913/ Pat. Nov 23, 1915/ Others Pending."
File consists of published journal articles, press releases and other reports collected by Ben Gadd pertaining to coal mining and the proposed Cheviot Mine project near Cadomin, Alberta. Includes materials published by The Tex Report, Ben Gadd, and the Alberta Government's Department of Energy and …
File consists of published journal articles, press releases and other reports collected by Ben Gadd pertaining to coal mining and the proposed Cheviot Mine project near Cadomin, Alberta. Includes materials published by The Tex Report, Ben Gadd, and the Alberta Government's Department of Energy and Natural Resources, as well as various online articles related to coal mining.
cast iron, double headed pick, wooden handle, squared cast iron comes to a point both ends, collar welded on to head and goes up handle 9.5 cm. oval collar 2.0 wide on end of handle, 2 spikes are driven into centre of handle at head end,on sides of sleeve: "The Hardy Patent F??? Co Ltd Sheffield; o…
cast iron, double headed pick, wooden handle, squared cast iron comes to a point both ends, collar welded on to head and goes up handle 9.5 cm. oval collar 2.0 wide on end of handle, 2 spikes are driven into centre of handle at head end,on sides of sleeve: "The Hardy Patent F??? Co Ltd Sheffield; other side: "Universal".