Hepplewhite Gray flame safety lamp - Collections OnlineAshworth Hepplewhite Grey flame safety lamp. Steel base with locking device with glass shield protected by four brass columns (two with retractable vents) above this a central brass column

Hepplewhite Gray flame safety lamp - Collections OnlineHis workmate, Bill Wedlock survived the disaster and his family kept the lamp until . The Hepplewhite Gray lamp was usually used by mine officials rather than workmen (although their

Hepplewhite Gray flame safety lamp - Collections OnlineThis gas detecting lamp was used at Universal Colliery, Senghenydd in the early th century. It was owned by Bowen Jones, one of the victims of the explosion in which miners

Ashworth-Hepplewhite-Grey Safety Lamp - National This flame safety lamp is an Ashworth Hepplewhite Gray style lamp manufactured by the American Safety Lamp & Mine Supply Company of Scranton, Pennsylvania during the late

Hepplewhite Gray flame safety lamp | Images of Industry-- &#; Hepplewhite Gray flame safety lamp Hepplewhite Gray Date: early s Media: brass Size: x mm Acquired: ; Purchase Accession Number: . This gas

Ashworth-Hepplewhite-Grey Safety Lamp | Smithsonian -- &#; This flame safety lamp is an Ashworth Hepplewhite Gray style lamp manufactured by the American Safety Lamp & Mine Supply Company of Scranton, Pennsylvania during the late

Ashworth Hepplewhite Gray Safety Lamp, - Science Ashworth Hepplewhite Gray Safety Lamp, Made: in Derby Safety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas detecting, maker: Stanley, Derby, marking: makers

Ashworth Hepplewhite Gray Safety Lamp, | Museu.MSSafety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas detecting, maker: Stanley, Derby, marking: makers name and Ashworth-Hepplewhite-Gray, Collection Science Museum

Safety lamp | Science Museum Group CollectionType or more characters for results. Safety lamp Made: in Derby maker: John Davis and Son Safety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas testing, maker: J. Davis

Hepplewhite Gray flame safety lamp - Collections OnlineHepplewhite Gray flame safety lamp. Brass miner's safety lamp with 'Hepplewhite Gray' and 'Ashworth's Patent' and 'Stanley Derby' stamped on middle flat section above glass centre. This gas detecting lamp was used at Universal Colliery, Senghenydd in the early th century. It was owned by Bowen Jones, one of the victims of the

Ashworth-Hepplewhite-Grey Safety Lamp | Smithsonian -- &#; Mining Lamps Work Industry & Manufacturing Grant Wheat Collection ID Number AG.MHI-MN- accession number catalog number MHI-MN- Description This flame safety lamp is an Ashworth Hepplewhite Gray style lamp manufactured by the American Safety Lamp & Mine Supply Company of Scranton, Pennsylvania during the late th or early

Miner’s Safety Lamp | National Museum of American History-- &#; The majority of Ashworth-Hepplewhite-Gray lamps were produced by John Davis & Son of Derby, Leicestershire, U.K., during the late th and early th century. Location Currently not on view Object Name lamp, safety, mining mining lamp Measurements overall: in x in x in; . cm x . cm x . cm ID Number AG.MHI-MN-A

Ashworth-Hepplewhite-Grey Safety Lamp | Smithsonian -- &#; Ashworth-Hepplewhite-Grey Safety Lamp. National Museum of American History. Addthis Share Tools

Safety lamp | Science Museum Group CollectionSafety lamp, Ashworth-Hepplewhite Gray, Gray type, use: gas detecting, maker J. Davis and Son, Derby, marking: makers name, Details Category: Mining & Ore Dressing Object Number: -/ type: safety lamps taxonomy: furnishings; furnishings; lighting

Miner' Safety Lamps - Metallurgist & Mineral -- &#; By means of a sliding ring around the base the air may enter gauze-covered openings below the flame, or, when these are closed, it enters through openings in the lower part of the bonnet passing through the lower part of the

minesafetylamps - Mining Artifacts-- &#; MINE FLAME SAFETY LAMPS Handlan-Buck St. Louis Ashworth-Hepplewhite-Grey. Presentation Baby Wolf ASL&MS Co. Deputy Marsaut Everhart Davy. ASL&MS Co. Jas. Queen Davy Aluminum Hughes Bros. Davy

Safety Lamps/American Safety Lamp A-H-G Marking-- &#; American Safety Lamp A-H-G Marking | Original Image: Total images: | Last update: // : PM | Help | Last update: // : PM | Help

Flame Safety Lamps - Page - UNT Digital LibraryFrom Introduction: "However, before the flame lamp becomes obsolete, it is fitting that the Bureau of Mines compile a permanent record of a device which has served the mining industry for more than three generations, and not only made possible the development of entire districts that otherwise could have not been worked but undoubtedly saved the lives of thousands of

Ashworth - GEOCITIES.ws-- &#; The Ashworth-Hepplewhite-Gray lamp, also know asthe A-H-G or Gray lamp, is one of the earliest safety lamps designed for firedamp testing. The basic design of the lamp includes hollow standards running vertically for admitting air from the top or near the base, and feeding the flame in an underdraft fashion. Through utilizing shutters, the lamp

Ashworth Hepplewhite Gray Safety Lamp, - Science Ashworth Hepplewhite Gray Safety Lamp, Made: in Derby Safety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas detecting, maker: Stanley, Derby, marking: makers name and Ashworth-Hepplewhite-Gray, Details Category: Mining & Ore Dressing Object Number: -/ Materials: brass (copper, zinc alloy) , complete and

Ashworth Hepplewhite Gray Safety Lamp, | Museu.MSSafety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas detecting, maker: Stanley, Derby, marking: makers name and Ashworth-Hepplewhite-Gray, Collection Science Museum Inventory Number Title Ashworth Hepplewhite Gray Safety Lamp, Object Type PhysicalObject Measurements - overall: x mm Bridegroom

Hepplewhite Gray flame safety lamp - Casgliadau Arlein Defnyddiwyd y lamp canfod nwy hon yng Nglofa Universal, Senghennydd. Y perchennog oedd Bowen Jones, un a gollodd ei fywyd yn ffrwydrad . Gan amlaf, swyddogion y pwll yn hytrach na gweithwyr fyddai'n defnyddio lamp Hepplewhite Gray (er nad oes s&#;n

Miner’s Safety Lamp | National Museum of American History-- &#; The majority of Ashworth-Hepplewhite-Gray lamps were produced by John Davis & Son of Derby, Leicestershire, U.K., during the late th and early th century. Location Currently not on view Object Name lamp, safety, mining mining lamp Measurements overall: in x in x in; . cm x . cm x . cm ID Number

Safety lamp | Science Museum Group CollectionType or more characters for results. Safety lamp Made: in Derby maker: John Davis and Son Safety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: gas testing, maker: J. Davis and Son, Derby, marking: makers name, Details Category: Mining & Ore Dressing Object Number: - Measurements: undefined type: miner's safety lamp

Flame safety lamp - Casgliadau Arlein | National Museum Hepplewhite Gray flame safety lamp - Official's lamp. Light alloy, partly covered glass to project light forward, screw type. Pwnc Diwydiant Rhif yr Eitem ./ Creu/Cynhyrchu Hepplewhite Gray R&#;l: manufacturer Dyddiad: Derbyniad Donation, //

Safety lamp | Science Museum Group CollectionSafety lamp, Ashworth-Hepplewhite Gray, Gray type, use: gas detecting, maker J. Davis and Son, Derby, marking: makers name, Details Category: Mining & Ore Dressing Object Number: -/ type: safety lamps taxonomy: furnishings; furnishings; lighting devices; lamps (lighting devices)

Choice Ashworth-Hepplewhite Style Safety LampsAshworth Hepplewhite gray lamp produced by Davis and Son of Derby. Tubes running vertically direct air to flame at base which will produce a cap in the presence of methane it will change color. These two very well constructed lamps are choice and attractive. One is well marked with punches and the other has no marks but is nearly identical.

Safety mining lamps - ScienceDirectthese dangers are twofold in their nature: (a) the danger arising from an explosion of mine gas due to its ignition by the flame of a naked lamp or of a blown-out shot, or the sparking of, an electric wire or other cause; (b) the danger arising from the poisonous effects of many of these gases, or from suffocation because of their inability to

CLowes - GEOCITIES.ws-- &#; What evolved into commercial use based on the patent was a modified Ashworth-Hepplewhite-Gray lamp with a detachable external cylinder for compressed hydrogen. The lamp would use an oil flame for detecting methane down to /%. Below that, the hydrogen gas was turned on via the cylinder valve and the burner lit by the oil flame.