US1009217A

US1009217A - Furnace device.

Info

Publication number: US1009217A
Application number: US60574011A
Authority: US
Inventors: John E Blake; Henry H Blake
Original assignee: BLAKE CRUSHER AND PULVERIZER Co
Current assignee: BLAKE CRUSHER AND PULVERIZER Co
Priority date: 1911-01-31
Filing date: 1911-01-31
Publication date: 1911-11-21
Anticipated expiration: 1928-11-21

Description

Patented NOV. 21 1911. 2 SHEETS-SHEET 2 viii FIG. 4

H a k RSPKT I v llmmm 'r' mm n. BLAKE mp nann H. rlLAKn,

OF PITTSBURGH, PENNSYLVANIA, ASSIGNORS T BLAKE CBUSHER AND PULVEBIZEB QOMPANY,-OF PITTSBURGH, PENNfiYLVANIA,

. A CORPORATION or PENNSYLVANIA.

' FURNACE DEVICE.

A g Specification of Letters Patent. Patented Hwy, 21, 19111,

'Application and January 31, 191i. Serial no. 665,740.

To olf'whoni may concern:

Be it known thatwe, J OHN E. and

I HENRY H. BLAKE, citizens of the United I proved of Pennsylvania,

States, and residing in the city of Pittsburgh,- in the county of Allegheny and State ered new and useful Improvements in Fur naoe Devices, of which the following isia specification. v

Our invention consists-in new and immeansfor introducing a supply of heated air into a furnace or other combustion chamber to promote combustion of the fuel. The. air. is led-downwardly through.

a heatedqduct or passagein front of the fur nace walland-introduced into the furnace at the bottom in a highly-heated state. Gontrolling means areprovided so that the supply of air may be We show novel means for-providing access to the interior of the furnace witha slice bar or other tool, when necessary, and

for closing the access orifice when. not in use to exclude the cold air and prevent esc pe of tlie heat. We show a novel closure for such orifice which consistsof a door hinged to the front of the furnace and containin' means for the downward introduction 0 the air, preferably inthe form of a combined duct and damper member. 7

' scription.

Novel arrangements and. construction of partswill appear from the following de- In 'the o a pract cal tion-aiidiiot intended -to limit the same to the 'nstructionjshown, Figure 1 is a longitudinal, vertical section of a furnace'fitted ,with' our invention taken along the line 'I--'I in Fig. 2 Fig. 2 is afront elevation of af furnace fitted withthree of our devices, thedoor of the left hand instalmentbeing 45- shown .open to"disclosethe orifice into the combustionchamber, the door-in the central instalment i'ng shown closed. and the'duot member raised, both: door. and. duct being partially broken. away, whilethe door in the right hand instalment'is shown closed and the duct member depressed, door and duct member being both-partially broken away;

have invented or discovr out off or regulated.

I ingdrawin sfivhichf are howevefl merely. ustrative embodiment of the principles of our inven 1 Fig: Bis a horizontal section taken along the line III.-III in Fig. 2.; Fig. 4 is a perspective ofthe plate which we attachto the outside of the furnace wall; Fig. .5 is a similar view of the sliding duct member; Fig. '6 is v enrich.

a similar view of the door, while Fig.7 is.

a plan view of the lever mechanism which controls the movement of the duct member.

, The following is a detailed description of the drawings. lis the front wall of a furnace or'combustion chamber, uporr the outer faceofwhiQ 7 we bolt orotherwise secure aplate 2 provided with an inverted T shaped orifice or port 3 which is surrounded on all sides by 1 "arearwardly extending flange i extending from; the front to the rear face'of wall 1 so that when the plate 2 is in place, the orifice 3, which extends into the interior of the combustion chamberv is walled on alf sides by the flange 4 and the brick work or other.

material of wall l is built up solidly against.

"7 5 fice 3 is intended to permit the introduction the flange 4 to support the plate. The oriof a slicelbar or other tool into the furnace, I

when necessary, and the flange iprotects the brick work of'wall 1 from injury by the tool.

,5is' a doormember, hinged at one side to the plate 2 and provided with inwardly extending flanges at the sides and bottom,-

-6:-6, which serve to space the front of the door away from the plate 2 and form therewith an open topped and closed bottom pass'a eway for the descent of air. r

a is a -port-closing and air-i let controlling member, or duct member preferably formed as anelongated tube and provided with lateral flanges 8-8 which are mounted in slideways 9-9 on the inner face of door 5 to slidably sup The duct 7 is 0 sufficient width to close the 'vertical portion of orifice 3 and fits closely up against the plate 2 when the door 5 is closed. The rear wall of duct 7 is extended laterally at the bottom to form damper'plate' 10- which, when the duct is depressed to its lowest position completely closes the lower portion of orifice 3 against the entrance of The duct air into the combustiomchamber. 7 israised or lowered bymeans of a conort said duct on said door."

necting rod 11 pivoted to the duct and to a hand lever 12 fulcrumed to the edge of I would admit cold air into the combustlon door 5; A thumb nut and spring washer, 13, and 13,'respectively, or some other con venient mechanism, is provided so that the lever 12 may be locked in any position to hold the duct 7 at any desired elevation.

The upper end of door 5 and of duct 7 may be left open for the natural entrance of air or may be connected with an air blast device, not shown, for the introduction of air under pressure.

Means are provided, discharging into the top of the furnace, in front of the boiler, for supplying liquid or pulverized fuel to the combustion-chamber; said means comprislng pipes or tubes 14' (one thereof being shown in Fig. 1), which are fully shown and described in our previously-filed, copending application for patent for furnaces, Serial No. 603,100, filed Jan. 17, 1911, and which form no part of the present invention.

The operation of our device is as follows. When access with a slice bar is desired, the

door 5 is swung open and the orifice 3 is ex-' posed, thus permitting of convenient manipulation of the bar. At other times the door 5 is kept closed against late 2. If no air is to be admitted to t e combustion chamber the duct-7 is depressed to its lowest position, the damper 10 shutting the bottom" of orifice 3 and preventing the entrance of air into the furnace. the device, the duct 7 is raised and locked in its elevated position, whereupon air will enter the top of the duct and the top of the door at either side of the duct and travel downwardly and enter the combustion chamber-through the bottom of orifice. 3. The air traveling down the duct 7 -.will be come highly heated owing'tothe fact thatthesrear wall of said duct isexposed to the furnace heat through the aperture 3, while down the interior of the heated. The amount of the 'air admitted through the orifice 3 at the bottom 'will be regulated by the elevation of the duct 7 an its integral damper plate 10..

We preferably coat the rear face of door 5 and duct 7 with asbestos or some other: non-conductor of heat to ing out of the members.

. It is evident that our invention presents a number of novel advantages, among which may be mentioned the thorough heating of the air before its introduction of the same into the combustion chamber, its introduc tion at the bottom where it is needed to promote combustion, and the ability of'regulat ing the quantity or cutting oif entire the air admitted. Also the provision of convenient -means for gaining access to'the com bustion chamber with a slice bar' or other tool without injury to the furnace wall and without requiring an open orifice which To admit air through prevent the burnchamber or permit the escape" of heat therefrom. Thus the furnace room is not unduly heated nor is there any loss of heat efiiciency. I What we desire to claim is- 1. In furnace-construction, a plate securable to the exterior wall of a furnace combustion-chamber, and having a port adapted to communicate with the combustion-chamber, a door carried by said plate, and having a front wall, side walls, an open top and a closed bottom, and disposed in front of said port, and a port-closing and air-inlet controlling member reciprocable vertically between saiddoor and said plate and spaced from said side walls of the door, leaving an able to the exterior wall of a furnace combustion-chamber, and having a port adapted to communicate with the combustion-cham- 4 i her, a door carried by said plate, and having a front wall, side walls, an open top and a closed bottom, and disposed in-front of said port, and a port-closing and air-inlet controlling member disposed between said door and said plate and slidable vertically in bearings carried by said door, and spaced from said side walls of the "door, leaving an air-passage oneach side ofgsaid member between it and the adjacent side wall of said door, said member in its lowermost position entirely closing-passage through said port.

3. In furnace-construction, a plate securable to the exterior wall of a furnace combustion-chamber, and having a port adapted.

to communicate with the combustion-chamber, a door carried by said plate, and having a front wall, side walls, an open top and a closed bottom, and. disposed in front of said port, a port closing and air inlet controlling member reciprocable vertically between said'door and said plate and spaced from said side-walls of the door, leaving an air-passage on each side of said member between it and the adjacent side wall of said door, said member in its lowermost position entirely closing passage through said port,

and manually-operable means connected with said member for controlling the movement thereof. I

4. In furnace-construction, a plate securable to the exterior wall of a furnace combustion-chamber, and having an inverted, T-shaped port adapted-to communicate with the combustion-chamber, a door carried by said plate, and having a front wall, side walls, an open top and a closed bottom, and disposed in front of said port, and a portclosing and air-inlet controlling member reciprocable vertically between said door and said plate and spaced from said side walls of front wall, side walls, an open top and a closed bottom, and disposed front of said port, and a port-closing and air-inlet controlling member reciprocable vertically 15 between-said door and sa1d plate and spaced from said side walls of the door, leaving an air-passage on each side of said member be tween it and the adjacent side wall of said door, said member in its lowermost position 20 entirely closing passage through sa1d port.

JOHN E. BLAKE.

HENRY H. B.

- Witnesses:

T. Grmmmns DUFF, L

EDWARD A. LAWRENCE.