US387419A

US387419A - Furnace-door

Info

Publication number: US387419A
Authority: US
Publication date: 1888-08-07
Anticipated expiration: 1905-08-07

Description

(No Model.) Y

L. E. JORDAN.

FURNAGB D008.v No. 887,419.l Patented Aug. '1, 1888.

Vl//lIll/IIA UNITED STATES PATENT OrricE.

LLEVVELLYN E. JORDAN,

OF BUFFALO, NEW YORK.

FURNACE-DOOR.

SPECIFICATION forming part of Letters Patent No. 387,419, dated August '7, 1888.

Application filed November 3, 1857. Serial No. 254,147. (No model.)

.To all whom, it may concern:

Be it known that l, LLEWELLYN E. JORDAN, a citizen of the United States, residing at the city of Buffalo, in the county of Erie and State of blew York, have invented new and useful Improvements in FurnaceDoors, of which the following is a specification.

This invention relates to that class of furnace-doors which are made hollow and form a water-space through which water is circulated for keeping the door cool, and which are provided with a lining of fire-brick or other refractory material.

The object of my invention is to construct the door in such manner that the edges of the refractoryy lining as well as the adjacent porj tions of the furnace will beprotected from exvcessive heat and prevented from warping or other injury.

The invention consists of the improvements which will be hereinafter fully described, and pointed ont in the claims.

In the accompanying drawings, Figure 1 is an elevation of a furnace provided with my improved door, part of one of the doors being broken away Vto show its interior arrangement. Fig. 2 is a cross-section in line @c x, Fig. 1. Fig. 3 is a horizontal section in line y y, Fig. 1, on an enlarged scale. Fig. 4 is a perspective View of the door. Fig. 5 is a central vertical cross-section of the same.

Like letters of reference refer to like parts in the several iigures.

A represents the furnace, B the opening, a the jambs, and b the fore-plate thereof, all of which parts are of ordinary and well-known construction.

O represents the door arranged against the jambs a in front of the opening, and resting when closed with its lower edge upon the foreplate b of the furnace. The door C is raised and lowered by means of a cable, d, which passes over a pulley, d', and is connected at its lower end to a lug or ear, d2, formed centrally on the upper end of the door C.

The door Ois composed of a hollow cast-iron frame, E, which is provided on its inner face with a lining, F, of fire-brick or other refractory material. The frame E consists of an outer wall, g, an inner wall, g', end walls, g2, and a bottom wall, g, connecting the inner and outer between the inner and outer walls.

h represents hollow vertical flanges projecting inwardly from the two end walls and the inner wall, and li a similar flange projecting inwardly from the bottom wall and connecting the two vertical flanges h of the end walls. These hollow flanges 7i h form enlarged waterspaces at the ends and bottom of the door and communicate with the hollow central waterspace g4.

t' represents the water-supply pipe, which is arranged above the door with its lower e'nd de pending into the space g4 between the inner and outer walls, gg, the top of the door being left open to permit the pipe to enter the space between the inner and outer Walls, g g.

t" represents the overflow-pipe, which is tapped into an opening formed in the outer wall, g, and extends laterally, with its dis charge end arranged over a suitable receiver or funnel, i". The hollow frame E is kept cool by the circulation of the water through the space g4.

The refractory lining F is secured to the inner wall, g', between the vertical side flanges, h, and the bottom Iiange, h', by dovetail ribs vla, formed on the inner wall, g', adjacenttothe inner edges of the Vertical side flanges, h, and a central vertical rib, k', formed on the inner Wall, g', between the two Verticalflanges h and similar dovetail grooves formed in the brick or lining F, as shown in Fig. 3. The lower edge or bottom of the re-brick or lining F rests upon the bottom iiange, h', and the sides or ends of the brick or lining fit against the inner edge of the vertical flanges h, which are iiush with the outer face of the lining. The lining is in this manner protected by the flanges h h', and is prevented from coming in contact with the jambs a of the furnace and being injured thereby as the door is raised and lowered.

The vertical hollow iianges 7i protect the j ambs a of the furnace from excessive heat and prevent them from burning out rapidly, and the bottom flange, h, which rests upon the fore-plate b when the door is closed, serves to protect the fore-plate from warping and burning out. The flanges h hformacomplete protection to the edges of the lire-brick, and

walls and forming a hollow water-space, gi,r

IOO

by the constant circulation of-the cold water in the hollow frame the lining of lre-brick is kept comparatively eool and prevented from crumbling. The flanges h h also serve to strengthen the frame E. The frame E een be readily enst complete with the hollow flanges h h and ribs 7c It', :1nd,with the lining F, forms a strong and durable furnace-door.

I claim as my invention- 1. In a furnace-door, the combination, with the hollow frame E, having en open top and n closed bottom and formingawnter-spnce, 9^', of hollow vertical end llanges, 7i, and a bottom flange, h', projecting inwardly from the ends and bottom of the frame E and forming enlarged weterspeces et the ends and bottom of the central water-space, g, :i lining of tirebriek scoured to the inner wall ol the frame E between the end Hongos, h7 and bottom ilztnge, 7L', and nl water-pipe, i, entering the waterspnee g" through the open top of the frame E, substantially es set forth.

2. In e fnrnaeedoor, the combination, with the hollow frame E, having en open top and closed bottom and forming a hollow waterspace, g, of hollow vertical end anges, h, and n hollow bottom Ilenge,h,projeeting inwardly from the ends and bottom of the frame E and forming enlarged waterspeces at the ends and bottom of the frame and continuations of the central waterspaee, g4, vertical dovetail ribs 7c 7s', projecting inwardly from the inner wall ofthe frame E between the vertical flanges h, and a lining of lire-brick, F, having dovetniled grooves and secured to the inner wall of the frame E between the ribs lac', the edges and bottom of the lining being protected by the hollow flanges It h', substantially as set forth.

fitness my hund this 28th day ol` October, 1887.

LLEVVELLYN E. JORDAN.

W'itnesses:

JNO. J. BoNNnn, FRED. C. GEYER.