USRE7773E - Improvement in safety derrick-lamps - Google Patents
Improvement in safety derrick-lamps Download PDFInfo
- Publication number
- USRE7773E USRE7773E US RE7773 E USRE7773 E US RE7773E
- Authority
- US
- United States
- Prior art keywords
- lamp
- derrick
- tubes
- safety
- wick
- Prior art date
Links
- 239000002184 metal Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 241000602850 Cinclidae Species 0.000 description 1
- 210000001503 Joints Anatomy 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Definitions
- a gastight cover as the oil which will be generally used is very inflammable and explosive.
- Figure l is an exterior view of my improved lamp.
- Fig. 2 is a sectional view.
- A represents the body ofthe lamp.
- B B are the wick-tubes. This .lamp is cast in a mold, the wick-tubes B B being of continuous metal with the body A.
- a. a are ears, for the receptionof the ends of the bail c,- and b b are projections or lugs formed on the sides of the body A.
- D is a yoke or clamp-bar, the ends of which hook on the lugs b b. It is passed ber gasket, f f, or other elastic packing, which prevents the escape of gas from the interior of the lamp when the lid is secured in position.
- the lid may be made crowning or dished, and with an increased thickness of metal toward the center, so as to give increased strength at the point where the clamp-screw d bears upon it. It is provided with a small vent-hole, h, which is protected by a shield, i, the object of which has been stated.
- two or more loops or eyes, j j may be cast, for receiving and holding a rod or hook, F, or any other instrument suitable for trimming or picking the wicks of the lamp.
- wick-tubes may be cast in the lamp, if desired, or any form of gas-tight cover may be used, or the vent h may be placed on the upper part of the lamp, or the cover may be made to fit so closely that a packing would be superfluous, or the bail may be put on the cover, or a projection might be cast in it for a hook.
- a lamp constructed substantially as described, having the body A, and wick-tubes B B on such body, with a gas-tight lid or cover and a bail, for the purpose specified.
- the lid E having a double rim, e c, with or without rubber packing, in combination with the yoke D, screw d, and lamp A, substantially as shown, and for the purpose specified.
- V 4 The combination, in a derrick-lamp, of the body A, wick-tubes B, ears a, and bail a, substantially as shown and described.
- a cast-metal derrick-lamp consisting of the body A, wick-tubes B, and projections or cars a, all in one and the same piece, and produced at the same operationof casting.
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