US294796A - langdon - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2.

- N. 1v1. LANGDON.

GAS PRODUCING FURNAGE.

Patented MM. 11, 18847.

UNiTn' STATES NELSON LANGDON, OF CHESTER, NEV JERSEY.

GAS-PRODUCING FURNACE.

SPECIFICATION forming part of Letters Patent No. 294,796, datedA March 11, 1884.

' 1 Application filed May 28, 1883. (No model.) v i To @ZZ whom t may concern:

Be it known that I, NELSON M. LANeDoN, of Chester, in the State of New Jersey, have invented certain new and useful-Improvements in Gas-Producing Furnaces; and I do hereby declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvementin gas-producing furnaces 5 and it consists in the parts and combinations of parts,as will be more fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in vertical section, the right half of the gure being taken through the gas-exit flue, injector, and tuyere, and the left half through the door-passage. Fig. 2 is a plan view. Fig. 3 is a 4horizontal sectional view, showing the arrangement of the doors, tuyeres, and injectors. Fig. 4 is a detached view of one of the injectors, and Fig. 5 is a view in front elevation of one of the doors.'

A represents an upright shaft-furnace, preferably cylindrical in shape, having a bosh, B, formed by the inclined or sloping walls thereof.

VImmediately below the bosh, and in direct communication therewith, are the doors and combined steam and air passages, while the gasexit passage is connected to the furnace near the top thereof.

The small tuyeres or passage-ways a, situated immediately under and in communication with the bosh B, are bifurcated at their inner ends, forming two distinct flues, which together with the door-passages b, terminate in the central chamber, C,while the outer ends ofthe tuyeres a are in direct communication with the injectors D, through which blasts of commingled steam and air are forced in the usual manner.

Small passages or flues c connect the injectors and door-passages b, and a portion of the blast ofcommingled steam and air, entering the door-passage?) through the fines c,prevents the door E from getting too hot and warping.

The doors E, tofacilitate cleaning, are placed opposite each other, so that a continuous passage-way is formed through the furnace.

The door-frames E are rmly secured in the furnace, and each is provided on opposite sides with the outwardly-extending arms d, which latter support the doors. Each arm is provided on its upper face with a wedge-shaped groove or recess, into which correspondinglyshaped lugs e, formedintegral on oppositesde edges of the door, rest. Thus it will be seen thatwhen the door, which is removable, isrested on the side arms of the door-frame the weight thereof causes it to move down the wedgeshaped recesses in the side arms of the said frame and fit snugly against the door-frame, the contact-surfaces between the door-frame and door being planed, so as to form practically an air-tight j oint. Each dooris provided centrally with a female screwthreaded recess, f, into which a piece of gas-pipe canbe secured for the purpose of forming a handle by which the doors can be conveniently removed and reset when necessary.

F is a hopper situated in the top of the furnace for the purposey of introducing the fuel. This hopper is secured to the furnace in a substantial manner, and is closed by the bell G, which latter is held in place by the weighted forked lever I. This lever is fulcrumed to the standard J, and the two arms g thereof, which terminate over the bell G, are connected to the said bell by thelinks h, the lower ends of which latter are pivotally secured tothe guide-flanges fi. The center or apex o f the bell Gis provided with an opening, through which abar may be introduced for punching or spreading out the fuel in the producer. Vhen this opening is not in use, it can be closed by a suitable plug to prevent the escape of any gas.

The gas-exit ue K is connected to the furnace near the top thereof, and is provided with the valve ring or seat j, secured in the wall thereof, on which the valve rests. This valve L is connected to the lower end of the notched bar M, which latter passes upwardly through the slot in the plate Nand terminates in ahandle by which it is grasped. The plate N also forms a seat for the pawl O, which latter is adapted to engage the notched bar for the purpose of holding the valve in an elevated position.

To produce gas inthe furnace the fuel is first ignited and the combustion maintained and gas generated by the introduction through the IOO tuycres or flues by means ofthe steam-j etinjeetors of a blast of coinmingled steam and air. A portion of this blast passes through iues c into the door-passages b, and serves to prevent the doorsE from becolnin over-heated and Warped. Then the furnace is first started, the Valve L is closed until the heat attained is sufficient to decompose the steain, after which it is opened and the gas generated allowed to pass into a suitable receiving` tank or reservoir.

Having fully described my invent-ion, what I elaini as new, and desire to secure by YLetters Patent, is-

l. The combination7 with a chamber encircling the bosh, door-passages located on dianietrieally opposite sides ofthe bosh and eo1nninnieating at their outer ends with said encircling` chamber and at their inner ends with the combnstion-chamber7 and tuyeres located between said door-passages and on opposite sides ofthe bosh, of the stea111-jetblast injector for NELSOX M. LANGDO.

fitnessesz Isliiio Hnxcn, DAYID SWACKHMIER, Iris. l-l. Nmorrnonn.

Images