Specification of William Hargreaves, junior : furnaces and apparatus for consuming smoke, generating steam, &c.

  • Hargreaves, William.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Hargreaves, junior : furnaces and apparatus for consuming smoke, generating steam, &c. Source: Wellcome Collection.

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    Hargreaves Impts. in Furnaces for Consuming Smoke, Generating Steam, $c. Op the Consumption of Smoke. For this purpose I construct the furnace, as shewn and described, with a hopper or feeder attached in front at C, in connection with the furnace door M, and for the purpose of rendering the process of feeding the furnace regularly and by a means commonly termed self-acting, but properly the result of certain 5 mechanism for communicating such action. To the pinion shaft i are attached the pinion wheels a, a, motion being communicated thereto by an eccentric crank attached to the elongated end indicated by the arrow in Figure 3; the racks and door b are thereby raised so as to admit of a certain quantity of fuel being forced or shaken out of the 10 hopper C and deposited in front of the feeder d upon the dead plate g. This rotary motion is moderated by the length of the eccentric crank, and adjusted to the requirements of the furnace to be fed and power to be raised. The fuel thus deposited on the dead plate g is then forced forward on the bed of bars G by a similar rotary motion given to the bars G by the principal lever L, com- 15 municated to the lever H by the cranked eccentric L*, which said motion being communicated to the lugs e, e, cast upon the bars G, move forward the feeder d upon the dead plate g, and thus a continuous supply of fuel from the hopper is obtained. The process of feeding from the hopper by the mecha¬ nical apparatus herein described ends with the delivery on to the furnace bars 20 G by the action of the feeder d, as described; the hopper is supplied with coal by the fireman continually as the consumption goes on. The shaft and chain 0 serve to raise the furnace door M worked by a cranked handle. The coal thus deposited on the furnace bars G and gradually entering into combustion, is, by the continual action of the feeder d and bars G, carried by degrees 25 equally and evenly over the whole surface to the extreme end of the furnace, and finally driven over the brick banker or retaining wall at N into the ash¬ pit 0, during which operation the smoke-consuming process is in full action, and is obtained and carried on in the following manner and by the following mechanical means and appliances. Referring to the plan, Figure 2, the whole 30 surface of the furnace bars G is exhibited, forming the bed on which the coal enters into combustion, and on which the smoke-consuming process is carried on; the form of the said bars is also exhibited in section, Figure 3, and together exhibits the length and width of the interstices between them through which a portion of the ashes fall into the pit m; the bars also have solid ends 35 or bearings working against each other, as shewn at a*. The bed of bars thus described are supported in place, as shewn, by the levers H, K, I; the under side of the bars G are provided witt ears which take the cross head of the