US236465A - Furnace for burning cane-trash - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

0. SPREGKBLS & J. MOORE. Furnace for Burning Oane Trash.

No. 236,465. Patented Jan. 11-,1881.

N. PETERS. PHOTO-LITHOGRIPNER, WASHING ON D c Modem 2 Sheets-Sheet 2-.

G. SPRECKELSpKI; J. MOORE. Furnace for Burning Cane Trash.

Patented Jan. 11,188].

Fig-5:

m m MN MW.

TON. D c.

METERS, PHQTO-UTHOGRAPHER. WASHING CLAUS SPRECKELS AND JOSEPH MOORE, OFSAN FRANCISCO, CALIFORNIA.

FURNACE FOR BURNING CANE-TRASH.

SPECIFICATION forming part of Letters Patent No. 236, 465, dated January 11, 1881.

Application filed May3, 1880. (No model.)

T all whom it may concern:

Be it known that we, CLAUS SPREOKELS and JOSEPH MOORE, both ofthe city and county of San Francisco, in the State of California,

one of the United States of America, have invented new and useful Improvements in Furnaces forBurning Bagasse or Cane-Trash; and we do hereby declare that the following is a full, clear, and exact description of the construction and Operation of our said invention,

reference being had to the accompanying drawings.

The first partof ourinvention relates to certain improvements in the tire-chamber and the 1 grate or fuel-supporting surface ofbagasse or cane burning furnaces; and the second part of our invention to a means or apparatus for automatically feeding the hagasse orcane-trash to the furnace.

Ne construct our furnace of an iron rim or case independent of the boiler, but of a shape to receive or be connected to the front end thereof, and to give a greater height of fire and combustion space than is afforded in the 2 fire-chambersofordinaryboiler-furnaces. This case is lined with brick or tire-clay, and is provided with a feed-hopper on top and near its front line or wall. Below the inlet of this hopper, within the chamber, we arrange an in- 0 clined grate or fuel-supporting surface, which is capable of adjustment to occupy a greater or less degree of inclination beneath the fuelinlet, as may be required, according to the kind or quality of fuel used. This gratesur- 5 face fills up the space between the side walls of the chamber, and its front end is pivoted or hinged to a plate or bridge fixed to and projecting from the front wall ofthe furnace, about midway between the bottom or ash-pit and the 40 roof of the chamber, so that a large space below the grate is afforded for the reception of the ashes. The surface of this grate we construct of a num ber'of flat plates or bars placed one above and in advance of the other in a regular manner, with a free vertical space between the surface of one plate and the edge of the next adjoining one, similar to the arrangement of a flight of steps, and the rear and lower end of the grate is connected to horizontal rods, which extend through the space at the bottom of the chamber and through its front wall, wherethey run through adjusting-nuts, the front ends of the rods being cut with screw-threads for this purpose. Below the bridge-plate, on the frontwall of the chamher and beneath the inclined grate-surface, we provide a large opening covered by a sliding door for the purpose of supplying air in sufficient quantity beneath the fuel, and for giving also ready means of access to the entire surface 0f the grate below the fire, for raking or keeping the draft free and clear of obstructions. We also provide a fuel-door in the front wall and above the grate, for the introduction of fuel of the ordinary kinds in firing up the fur-' nace or in burning other kinds of fuel than the cane-trash in cases where the supply of the latter is interrupted or exhausted.

The means or apparatus which we construct and employ for feeding the bagasse to the fur- 7: nace consists of the teed-hopper above described as situated on top of the furnace or fire-chamber, and havinga pair of fluted feeding-rollers located within it, and an endless traveling apron or carrier of the width of the 7 hopper extending from its upper end or mouth to any desired distance and. point of supply of the bagasse. The feeding-rollers and the endless carrier are geared together, so that the speed of both shall be uniform and the feeding of the fuel shall proceed in a regular manner without choking in the hopper. To regulate the thickness or amount of fuel upon the endless apron to be carried into the hopper, we provide an adjustable plate or striker upon the hopper iust over the edge of the apron, by which any excess of fuel lying on the apron above the line of the top of the hopper is caught by the striker as the endless apron moves forward and prevented from falling into 0 the hopper.

Referring to the accompanying drawings, Figure l is a side elevation of our improvement as applied to a boiler, the side wall of the furnace being broken away and the feed- 5 hopper and fuel-carrier being shown in section. Fig. 2 is a front View of Fig. 1. Fig. 3 is a transverse section taken vertically across the furnace and looking toward the front wall thereof. Fig. 4 is a top or plan view of the inclined grate, and Fig. 5 is a detailed view of one of its plates or bars.

A is the outer rim orcase of the furnace; B, the front end of the boiler to which the furnace is connected, and O is the fire-proof linin g.

D is the front wall, in which are the fueldoor D and the large opening covered by the door D E is the inclined grate, and f the bridgeplate, to which the grate is hinged at e e.

F F are the rods that support and hold out the lower end of the grate. These rods are pivoted to the end of the grate at g, and are held by means of the nuts h h on the screwthreaded ends 2' i.

G is the inlet from the feed-hopper H, and I is a sliding gate or damper for controlling the opening leading from the hopper.

K K are the fluted feeding-rollers,which are geared together and to the driving-roller L of the endless carrier or apron M, so that the apron and rollers shall travel at a uniform rate of speed.

N is the plate or striker placed above the opening m in the side of the hopper H.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. The furnace or fire-chamber adapted to receive or be connected to the end of a boiler, having an inclined grate, E, the highest point of which is at the front of the chamber, and provided with a feed-inlet, G, and feed-hopper H, situated on top and across the front end of the furnace, in combination with the feeding device, consisting of the feed-rollers K K and the endless traveling fuelcarrier M, an v ranged below the top or rim of the hopper and above the feed-rollers, said rollers and carrier being operated to travel at the same rate of speed, substantially as described, for the purposejset forth.

2. In combination with a bagasse or caneburning furnace having an inclined grate, the highest point of which is at the front of the furnace, the feeding device or apparatus for automatically introducing and supplying the fuel to and across the highest part of the grate, consisting of the feed-hopper H, with its feeding-inlet across the top and front end of the furnace, the feeding-rollers K K within the hopper, and the endless traveling apron or carrier M, placed at the side of the hopper at a point below the top or rim thereof, and connected with said rollers or driven so as to move at uniform speed with them, substantially as described, for the purpose set forth.

3. The hopper H, having the feedrolls K, the endless traveling fuel-carrier M, arranged to introduce the fuel into the hopper at the side and below the rim or top thereof, and the striker N, placed above the line of travel of the carrier M,in combination with the furnace, substantially as and for the purpose set forth.

Witness our hands and seals this 15th day of March, A. D. 1880.

OLAUS SPREOKELS. L. S. JOSEPH MOORE. L. S.

Witnesses:

EDWARD E. Osnomv, WM. F. CLARK.

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