Specification of William Crane Wilkins : ventilating apparatus, gas burners, &c. : lamps, gas stoves, and heating apparatus : manufacture of candles.

  • Wilkins, William Crane.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Crane Wilkins : ventilating apparatus, gas burners, &c. : lamps, gas stoves, and heating apparatus : manufacture of candles. Source: Wellcome Collection.

    14/32 (page 12)
    Wilkins' Lmpts. in Ventilating, Heating, and Lighting in Lamps, cj'c. be prevented from flowing to the burners. Under the washer is placed a spiral spring, the tendency of the elastic action of which is to raise the washer and close the communication ; d, the tube by which the reservoir is supplied with oil; e is a cap with only half a rim to it, and is provided with a leather washer upon its under side for the purpose of making an air-tight joint with the upper edge 5 of the filling tube d; / is a screw jointed to the upper side of the cap e; the screw works in the end of the lever g, which swivels upon the stud h. When the reservoir is to be supplied with oil the screw/is unscrewed ; this lifts the cap e off the top of the filling tube d, then moving round the lever g, the cap is moved on one side; the rod c being thus set at liberty, the spring 10 at its lower end will elevate the washer, and stop the flow of the oil to the burner; when the cap is rescrewed, the rod e will be depressed, and the passages to the burners opened. Another construction of railway lamp is represented in Fig. 36, which is a vertical section of a single burner lamp for the roof of a railway carriage. My 15 improvement in this lamp is the mode of supplying the oil to the reservoir of the lamp; the oil is supplied from the reservoir to the burner in the usual manner through the lower valve. The rod or spindle a which carries the valve h has also another valve c attached to it near its upper end and opening from its seat in the opposite direction to that of the lower valve 5, so that only one 20 of them can be opened at the same time. When it is required to supply oil to the reservoir of the lamp, all that is required is to press down the rod, whereby the lower valve will be closed upon its seat and the upper one opened. This prevents any oil from passing from the reservoir to the burner, while the opening of the upper valve permits the oil to be poured into the reservoir; the 25 small spiral spring above the upper valve at other times keeps the rod raised, and when the upper valve will be closed, and the lower one opened, when the oil will be supplied to the burner in the usual manner. Sheet D, Fig. 37, represents a plan view of a flat wick burner which approaches to the circular figure; the flat wicks are inserted in the spaces a, a, of the burner, and the 30 wick holder is of similar construction to those employed in Figures 30, 31, and also in Figure 34. My next improvement consists in an improved construction of bracket oil lamps, the principal feature of which is the employment of a curved wick holder and air tube, the cotton wick likewise assuming a corresponding curved form; 35 this lamp is represented in Sheet E, Figure 38, which is a vertical section of the lamp in the form of a plain bracket secured against a wall; the body of the lamp is shewn composed of a metal tube a, bent into the curved form represented, and it also forms in itself the reservoir for the oil; the outer end