Specification of Samuel Hall : apparatus for generating steam, gases, &c.

  • Hall, Samuel.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Samuel Hall : apparatus for generating steam, gases, &c. Source: Wellcome Collection.

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    Hall's Improvements in Apparatus for Generating Steam, Qc. whereby the air and steam which pass through such fire, or the various heated gasses formed thereby, as well as the steam that enters above the fire, are con¬ veyed to the gass tubes and passed through them, first entering by the said large tube m*, with comes in connection with the curved tube a, a, in the cover, and 5 having passed down to the bottom of that tube, branch off right and left by the two adjoining grooves, shewn by dotted lines marked o, o, then rising up the two nearest gas tubes to the top, they branch off in a similar manner right and left by the next two adjoining grooves, shewn by the plain lines and marked n, n, and thus proceed, descending and ascending by the remaining gas tubes and con- 10 necting grooves till they arrive at the other large gas tube m*, from the upper part of which branch pipe p9 which leads by the pipes attached to it, to be shewn hereafter, first to the reservoir, and then to the working cylinder. It is plain, therefore, that the heated gaseous matters from the fire by passing through all the gas tubes, and of course between all the water tubes, till they 15 escape by the said branch pipe p, must impart heat to the water within the water tubes. The four ears or projections r, r, r, r, are attached to and form a part of the bottom flanch of the main cylinder of the generator, by which it is supported on pillows K, K, K, K, which are fixed upon a plate of iron s, s, s, s. This being fixed on masonry work, and the pillars being hollow, a bar of iron 20 is passed through each of them, and by means of a screw and nutt at the top of each bar, and a bolt or wedge at the bottom, or by any other suitable means, the foundation plate, the pillars, and the main cylinder of the generator are all firmly fixed together; the bottom cylinder thereof can then be attached to and detached from the main cylinder at pleasure, without at 25 all disturbing the latter. The fire within the generator is supported on a grate or plate of iron t, perforated with small holes, which may be raised or lowered by a rod u (to which it is attached) working through a stuffing box fixed underneath and in the center of the bottom cylinder, being cast to it and forming a part thereof. To the lower end of this rod a bar or 30 lever V is attached, to raise or lower it when the apparatus is at work, and the fire is, of course, within the generator; the grate ought to be raised so high as that the fuel may be within the main cylinder and above the bottom flanch thereof; the ashes, &c. that fall down through the grate may be removed by taking the door or cover Y, Y, off the aperture upon which it is 35 firmly placed by a screw pressing upon it, which is fixed on the cross bar Z x, the ends of which are held by being firmly bolted to two iron studs attached to the side of the bottom cylinder. There is also a third stud similaily attached, from which the door Y, Y, is suspended by an iron bar, which moves upwards and downwards upon a pin or axle. This dooi may be. fixed