1851 Great Exhibition: Official Catalogue: Class X.: John Sweet Wellway
465. WELLWAY, JOHN SWEET, 7 Denmark Street, Bristol — Inventor and Manufacturer.
Syphon trough, for galvanic battery, made of gotta percha, and vulcanized India-rubber; tubes passing from the bottom of each cell to a main tube, form a syphon, by which the trough may be emptied when out of use; a gutta-percha valve, of new construction, closes the main tube when the battery is in use.
Registered gas-carriers' apparatus, rendering gas portable. A drum revolving horizontally, by means of a spring between the ceiling and floor of the room above, round which several feet of glazed vulcanized India-rubber tubing are coiled, which communicate with the main gas-pipe of the house. When in use, one end of the flexible tube is attached to a portable lamp-stand, which, when carried to a distant part of the room, is allowed to recede by the unwinding of the flexible tube; when the light is brought back, the revolving drum winds up the tubing. When out of use, the tubing is detached from the lamp-stand; it is then immediately coiled up by the drum.