US404719A

US404719A - Grate-bar

Info

Publication number: US404719A
Authority: US
Publication date: 1889-06-04
Anticipated expiration: 1906-06-04

Description

(No Mod-ell.)

' G. M. KNIGHT.

GBATE BAR.

No. 404,719. Patented June 4, 1889.

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GEORGE M. KNIGHT, OF ADRIAN, MICHIGAN.

G RATE-BAR.

SPECIFICATION forming part of Letters Patent No. 404,719, dated June 4, 1889.

Application filed September 26, 1888. Serial No. 286,473. (No model.)

T0 all whom, t may con/007W:

Be it known that I, GEORGE M. KNIGHT, a citizen of the United States, residing at Adrian, in the county of Lenawee and State of Michigan, have invented certain new and useful Improvements in Grate-Bars to be used under Boilers and in Furnaces, of which the following is a specification.

My invention relates to improvements in' grates for furnaces of all kinds, more particularly, however, for steam-boiler furnaces; and it consists in certain novelties in the construction, arrangement, and combination of the various parts, all of which I will now proceed to point out and describe, reference being had to the accompanying drawings, in which Figure I is a plan view of my apparatus with two of the grate-sections removed. Fig.

2 is a side elevation of the same, and Fig. 3 is an end elevation of one of the pipes with the grate in section.

Similarletters refer to similar parts throughout the several views.

In the above drawings, J represents a series of pipes which extend longitudinally underneath the grate-bars and are provided on one end with the removable caps I. The opposite ends of these pipes communicate with a chamber G. At regular intervals and cast integral with the pipes .I are the bearingplates d. These bearing-plates are adapted to receive the ends of the grate-sections L and support the same, and are provided on their upper surfaces with a small lug b, adapted to rise up between the bars of the grate-section, and thus hold the latter in place. The pipes .I are provided on their upper surfaces between the bearing-plates with numerous ori- Iices or perforations d.

The operation of my apparatus will now be understood. The chamber G is connected with a fan for creating an air-current. Air is forced into the chamber G and from it ough combustion.

I am also 4enabled by the use of my apparatus to utilize the cheapest kinds of fuelsuch as slack coal, screenings, and sawdust. The peculiar arrangement of the grate-sections adapts them for ready removal and replacing, should one burn out, without disturbing the rest.

By providing each individual pipe with an end cap, and by removing the same, each pipe can be readily cleaned out, irrespective of the others, and consequently much more thoroughly than if all had to be cleaned at the same time.

What I claim isl. A grate for a furnace, consisting of a series of pipes extending underneath and adjacent to a series of grate-sections and provided on their upper surfaces with perforations, of bearings on said pipes formed integral therewith for supporting said grate-sections, substantially as described.

2. The combination, in a furnace-grate, of the grate-sections L, pipes J, having perforations cl,bearingplates a, formed integral with said pipes and provided with lugs b, and a chamber G, into which said pipes extend and from which a current of air is supplied'to the pipes, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE M. KNIGHT.

Witnesses:

THos. M. HUNTER, FRED R. SEGER.