US67340A - Improvement in steam-boilees - Google Patents

Description

RICHARD NEEDHAM, OF DUKINFIELD, ENGIiA-ND..

Letters Patent .Na 67,340, dated July 30, 1867; patented in England .December 26, 1861.

IMPROVEMENT IN STEAM-BOILERS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, RICHARD NEEDHAM, of Dukineld, in the county of Chester, and Kingdom of England, engineer, have invented new and useful Improvements in Apparatus for Cleansing Steam-Boilersg and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and 'to the letters of reference marked thereon.

This invention consists in an improved mode of removing the scum from steam-boilers. In the interior of the boiler I place a pipe extending longitudinally from end to end, and connected at one endA to o. vertical pipe,

Vcommunicating with a cock or valve on the outside. The saidlongitudinal pipe is placed at the bottom of the interior of the boiler, or at some distance above it, as may be convenient, and has connected to its top a number of vertical pipes, each opening in thcshape of a funnel at the level of the water. The said funnels face the frontor firing end of the boiler, so that the scumshall of necessity enter them in consequence of the heat at the front end of the boiler causing the 'low or roll of water towards the back. The scum after entering the funnels passes through the vertical and longitudinal pipes to the cock or valve on the outside, which is opened, when required, to'let od" the scum. This arrangement may be modified by placing in the funnels a series of compartments, so that theuppcr edges of the sides of the compartments ascend in steps one above the other, these compartments communicatingl with one common box orpreceiver which has its bottom inclined from the ends towards the middle, such incline being varied to suit the different descriptions of boilers. The lowest compartment is placed at about the level of the lowest water line, and the highest compartment about on a level with the high-water level of the boiler. Any convenient number of compartments, stepped one above the other, may he used. The lowest edges of the partitions forming the compartments descend a little below the upper edge of the lowest compartment,`and at this level a perforated plate may be fixed which will tend to prevent agitation, and thus the disturbance of the scum or sediment which may have been deposited will be prevented from lreturning to the water in the boiler.

` My invention A/ivill be clearly understood by referring to the figures and letters onthe accompanying sheet of drawings, in which- Figures lvand 2 are longitudinal transverse sections of an ordinary two-fined boiler provided \vith.my improved apparatus for removing the scrum from `the water, and Figures 3 and 4 are plans of the two different funnels. In gs. l and 2 the longitudinal pipe extending from end to end in the interior of the boiler is shown ati1.

4 It is closed at one end,` as at Z7, and at the other end connected to the elbow pipe c, which is outside the boiler,

and to which is bolted the cock or valve d. At the top of the longitudinal pipe there are vertical pipes ef, which open either into flattened funnels g, figs. 1, 2, and 4, or into funnels L, figs. 1, 2, and 3, having a series of compartments. The funnel g is simply a cavity, and the funnel 7L another cavity, having` a number of sides or partitions, z', a perforated bottom, k, and'a chamber, Z, and both the funnels are placed so as to face the front or tiring end of the boiler'. The ordinary level of the .water is represented by the dotted line, and the heat from thg firing end causes a continual agitation or'ow of Water towards the backQhy which means the scum enters the funnels and pipes, from whence it is blown out or removed by opening the cock or valve d.

I do not claim-dividing the funnel-shaped skimmer into compartmentspas I am aware that that feature is claimed in the patent of James Seward and `Henry Smith, of February 5, 1857.

I claim as my invention the combination with a steam-boiler of one or more funnels or open-mouthed skimmers, so Vconstructed and arranged and provided with au exit pipe as' to collect the scum from the surface of the water, substantially as hereinabove set forth.

Done at Manchester, England, this seventeenth day of May, 1865.

RICHARD NEDHAM.

Witn esscs:

EDWARD JOSEPH HUGHES, Patent Agent, 20 Cross Street, M'anclteter, G. SEPTIMUS HUGHES, Patent Agent, 20 'Cross Street, Manchester.

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