. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. a, i, k, h, is a float, which consists of an inverted vessel of sheet iron or other metal, through the centre of which passes a spindle a c, having a collar at a, upon which the float is screwed down by a nut outside. At the upper end e is fixed a cap of brass with a joint ground steam- tight to the bottom of the whistle y"; dcd is a stay Uirough which the spindle a c passes, having sufficient clearance in the hole at c. This stay may be either double, as shown, or singl
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. a, i, k, h, is a float, which consists of an inverted vessel of sheet iron or other metal, through the centre of which passes a spindle a c, having a collar at a, upon which the float is screwed down by a nut outside. At the upper end e is fixed a cap of brass with a joint ground steam- tight to the bottom of the whistle y"; dcd is a stay Uirough which the spindle a c passes, having sufficient clearance in the hole at c. This stay may be either double, as shown, or single. At i is a cotter which prevents the spindle dropping farther than the distance from the bottom of the cotter to the stay at c; gh is the surface of the water. When the steam is down, the cotter in the spindle rests upon the stay, through which the spindle passes leaving the passage at e open. As soon as the steam rises, the vessel iakb hlls with steam and rises to the position shown in the sketch. When the water falls the float also falls, leaving the passage to the whistle open, and is stopped in its descent, as above described, by the cotter 6 resting on the stay. There are holes at the sides of the cup e as well as a passage through the top to prevent the lodgment of dirt, &c. The advantage which I think this apparatus possesses above any I have yet seen, is the absence of any working joints, there being only " .Some qualities w ill stand the fire remarkably w ell.—Ed. two points of contact required, at e and c, and those leaving clearance. The whistle will also act as a vacuum valve when the steam goes down; for it is evident that when the steam is below the pressure of the atmosphere, it will be condensed in the float vessel, which will consequently fall by its own gravity. I am, Sir, Your's obediently. Liverpool, May 15. G. J. Horner. KORTH OF ENGLAND RAILWAY CHAIR. ^~;j:..- ..,'^^. Please note that these images are extracted from scanned page images th
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Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
