1914 Helps for roofers and sheet metal workers (1914)
L.D. Berger · L.D. Berger · leaf 163
but we do pro-duce 100% efficiency from any gas andpressure, giving such perfect combustionthat we show results not heretofore ob-tained, both in economy and efficiency. The Johnson Direct Jet Bunsens giveinstantly a hot blast ranging from 1,900^to 2,250°, dependent on quality of gasand pressure,… … No. + No. 6 No. 4. Johnson Students Bunsen, with Pilot Light.Height, 6J in. Base, 7 in.Gas Consumption, 5 ft. per hour. $2.00 No. 5. Johnson Standard Bunsen—with Pilot Lightand shut off valve.Length, 7 in. Threaded to connect on i in. iron pipe.Consumption, 10 ft. per hour. ..$3.00 No. 6. Bunsen as…
Roofing · Sheet metal roofing · Sheet metal flashing and trim · Gutters · Metal-framed skylights · Finials · Weathervanes · Cornices · Heating stoves · Dampers · Diffusers · Registers · And grilles
Internet Archive · Building Technology Heritage Library · Public Domain Mark 1.0. Free to use for anything.
