US579387A - Boiler front and furnace - Google Patents

Description

(No Model.)

D. W. EVANS. BOILER FRQNT AND FURNACE.

No. 579,387. Patented Mar. 23, 1897.

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DAVID \V. EVANS, OF PITTSTON, PENNSYLVANIA.

BOILER FRONT AND FURNACE.

SPECIFICATIQN forming part of Letters Patent No. 579,387, dated March 23, 1897. Application filed June 22,1896. SerialNo. 596,434. (in model.)

To all whom it may concern.-

Be it known that I, DAVID W. EVANS, aciti zen of the United States, residing at the city of Pittston, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Boiler Fronts and Furnaces; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac companying drawings, and to the letters of reference marked thereon, which form apart of this specification.

My invention relates to boiler-furnaces, and is a device for openinga place in the bearingplate of the frame to admit of the cinders being dropped into the ash pit instead of being raked out in front of the lower doors while cleaning the fires, thereby saving the intense heat and gases which annoy the fireman in this operation and saving the warping of the doors in the front, being a great relief to the fireman and a saving to the apparatus;

Figure 1 represents aplan or horizontal section showing the device. Fig. 2 repre- The dotted lines show the device. Fig. 3 represents the longitudinal vertical section. Fig. 4 represents a fender made to set into the door when it is open to prevent the fire and ashes from falling outside, also to protect the workman from the fire heat and make a rest for the handle of the poker and scraper. Fig. 5 represents a horizontal section of the fender. Fig. 6 represents a vertical section of the fender.

Like letters in different figures refer to the same pieces.

A represents the doors in the opening of the bearing-plate II between the grate and the door.

A on the dotted lines represents the door dropped down and opened to allow the ashes and cinders to drop through.

I represents an opening by the side of the door A to admit air to effect a more complete combustion of the gases from the fuel and protect the inside of the doors and fronts from the effects of the heat.

space between them, with handles M M, made to set into the door-frame or front plate N, the ends of which are made to set each side of the front plate at the outer edge of the dead-plate for the purpose of preventing the cinders from fallin g out in front and to keep the heat from the fireman, the guard to be used only at the time of cleaning the fires by lifting the pawl G and pushing the hand-1ever E toward the rear of the boiler to a horizontal position. The trap-doorA is brought down and opened, as represented by dotted lines in Fig. 3, which admits of the cinders and ashes dropping through into the ash-pit as they are raked forward instead of being raked out at the door. The guard K placed in the door-opening fully prevents the fire or ashes being raked out over the front. After cleaning the fire and putting the ashes down into the pit the hand-lever E is raised again to an upright position, closing the door A, when the pawl G engages with the ratchet F, holding it in position.

J represents a perforated pipe running under the center bearing-bar or under the grates through which water is thrown onto the ashes and cinders in the ash-pit to form steam to be forced through the fuel to facilitate the relighting of the fire and quench the fire in the pit at the same time.

Having thus fully described my invention, what I claim as new, and wish to secure by Letters Patent, is-

1. The boiler-front with combined deadplate and grate-bar bearing with opening and drop door A, in combination with red D, to which is attached the arm 0, and lever-handle E, to open and close the same, substantially as shown and described.

2. The door in the combined dead-plate and grate-bearing with the shaft D running to the With a perforated Water-pipe running across 10 side of the furnace with crank C, and handin the rear of the dead-plate under the gratelever E, in combination with ratchet F, and bars, substantially as described and shown.

pawl G, to hold the same in the position de- In testimony whereof I affix my signature sired, snbstantially as shown and described. in presence of two witnesses.

3. The combined dead-plate and grate-bar DAVID IV. EVANS. bearing with door opening downward, with Witnesses: the shaft D, running to the side of the fur- E. B. PATTERSON, naoe With crank and lever in combination K. M. BENJAMIN.

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