US1829008A

US1829008A - Fire door

Info

Publication number: US1829008A
Application number: US375808A
Authority: US
Inventors: Howard H Lanning
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-07-03
Filing date: 1929-07-03
Publication date: 1931-10-27
Anticipated expiration: 1948-10-27

Description

Oct. 27, 1931.l H. H. LANNING FIRE DOOR Fled July 5, 1929 2 Sheets-Sheet l Oct. 27, 1931. H. H. LANNlNG 1,829,008

FIRE DOOR Filed July 5, 1929 2 Sheets-Sheet 2 Patented Oct. 27, 1931` f a UNITED 'STATES rHOWARD'H. LANNING, OF TOPEKA, KANSAS Fran Doon.

Application med my '3,

My invention is especially adapted to fire doors for locomotives'and relates more'pa-rticularly to there door rings of vlocomotives; although adaptation of the invention to other types of boiler fire doors is apparent. The invention has for its object the provision of a construction whereby air may be admitted to the irebox withoutthe necessity of opening the fire door and therefore without the danger encountered with constructions as at present employed. f

A further objectof the invention is to pro# v ',bered fire door ring 14 disposed about ythe vide regulable means whereby the air may be admitted in the desiredV and correct amounts to aid combustion-and consequently reduce the smoke emitted from the stack.l

Another object ofJmy invention is to provide air admittingmean's arranged so that in the event of a fire box or flue explosion, the force of Such explosionwilll be conveyedv to and discharged at a point removed from the operating positionsV of the enginemen.

' The objects and advantages of my invention will be readily comprehended :from the detailed description of the accompanying drawings, wherein- VFigure 1 is an elevation'of the rear of a `coal burning type of locomotive fire box, portions being broken away, illustrating theV applicationv of my invention. n

Figure 2`is a vertical sectional view taken substantially on'the line 2-2of :Figure 1, with the fire door omitted.

f Figure 3 is a sectional elevation taken substantiallyV on the line 3 3 ofFigure 2 looking in the direction'of the arrows.

' Figure 4 is a vertical sectional elevation of the lower end ofthe mechanism as disclosed in Figure 2, illustrating lthe air means in open position. y

In the drawlngs, I have illustrated my invention applied to a coal burning locomotive and for purposes of'exemplification havey shown the inventionk applied to what is known as? the Franklin butter-fly type of l admitting 1929. serial No. 375,309.` l

pneumatic fire door; namely a lire door which is adapted to be swung through a vertically disposed arc and which is usually operated kby pneumatic meansy attached to the boiler backhead, but ywhich means is omitted as it forms no part Vof my invention.

The' rear water'leg of the boiler is shown at 10 in Figure 2 formed by the inner sheet 11 and outer sheet l2 which are provided with the usual fire door flanges as at 13 about the Vfire box opening.

My invention involves ahollow or chamfre door opening in the boiler `head and which ring involves the ydownwardly extend? ing portion 15 which also encircles the sides ofthe fire door ring proper and provides an air conduit orconveying channel 16 which VAextends preferably beneath the tiring deck or floor 17 of the cab of the locomotive.

The kring is provided, in this particular instance with the .,Franklin butter-fly type of pneumatic door which is located at 18 and arranged to nrotate on the studs 19 supported by the bosses 20, while the bottom of the fire doorpis held in position against the opening kin the ring by` the lugs `21, 21 which are formed integral with the fire door ring.

The fire door ringas is apparent, conforms with the-contour or shape of the backhead of the fire box and is chambered throughout; with the back head, in the rspecific exemplification, constituting the rear wall of the,y air chamber in the ring.l The air chamber extends about and communicates with the re door opening in the ring, except for the transverse apertured boss portions 22'and 23 which receive the

lstuds

24 and 25 whereby the ring l 14 is securely fastened to the boiler back head 12. 1 The ring is of proper thicknessso' as to provide a suitable air chamber or conduit and has its perimeter 26 formed to extend sub` stantially flush with the boiler back head 12.

The ring, on its perimeter and4 at opposite isides,'is also provided with flanges or lobes as at 27 to receive the studs 24 for firmly securing the fire door ring in place.

The ring 14 is provided with a shovel shield 28 formed, preferably, integral therewith and made arcuate or dished to conform with the lower part of the fire door opening as shown. The shield 28 extends into the lire door opening and preferably in slight spaced relation with the door opening flange 13 of the boiler back head, as shown in Figure 2.

The fire door ring 14, as previously described, is formed so that air is drawn into the re door opening past the door opening flange i3, at all points, a small amount of air being also allowed to pass beneath the shield 28 through the-opening or space indicated at 29 in Figure 2. y

By arranging the shovel shield as described and by permitting air to pass around ,the bottom face of the shield, the fire box door opening :lian-ge I3 uand the shovel :shield 28 are protected and overheating Vof said parts is prevented.

The bot-tom :of the air `chamber :or conduit 16 is provided with a `damper 30 which extends throughout the bottom of the air `conveying portionfof the ring :14 and :constitutes a closure for the' air admitting-lend of the conduit or air -:chamber formed within the yshell constituting the :ii-re idoor :ring 14.

The damper 30, which constitutes the bottom of the chamberformed :by .the fire `ring shell, is sho-wn 'provided with upstanding apertured vlugs zor-ears X31.

r:Ihese lug-s orffearsaredisposed between the lugs orears.32;arrangedin1pairs atthelbottom of the fire door ring -shell:and which are likewise apertured to receive the hinge :pins '33, see Figure l., which latter may be secured in place in any suitable manner,as 'for :example :by .cotters asat T34. lugs or years 31 on the damper 30 are `formed =to permit the damper 30 to swing downwardly into open position, as shown in Figure 4. Y Y

One end-ofthe-d'amper :301is lprovided with an arm Aore-x-tension .35 .shown terminating in an upwardly disposed bifurcated portion 36;

the bifurcations ibeingfapertured to receive a `suitable :pin 37 lfor pivotally connecting a lever 38 thereto. .Lever-38 yispi-ovided with a longitudinally `disposed slot .39 which receives a stud 40 threaded ainto a flug l1 formed lintegral or secured fto lthe iredoor ring or shell 414; ythe stud bein-gheldagainst'rotation `in any suitable manneras for example ibyza nut 42..

The outer end Lof the stud 40 Eis provided with asma-ll leverror vclamp member 43 which i is adapted toclamp lthe lever38 in the desired position against the side of -thezlu-gfil. From this construction it is apparentithat when the small lever or clamp vmember 43 4'is turned out of clamping relation with the damper Acon- "trol lever 38, the latter may be moved downwardly or upwardly-as the case maybe, and thereby either open vor close the damper30 to the desired position or extent of opening. The position of the lever and therefore also of the damper are maintained by again screwing clamp member 43 into clamping relation with the side of damper operating lever 38.

As is evident from the construction shown and described, the desired amount of air for aiding combustion in the lire box may be controlled by the enginemen or operator by simply releasing clamp member 43 and torcing lever 38 downwardly a distance suficiently to opendamper30 to the desired extent. The air entering thechamber'or conduit 16 passes upwardly throughout the entire chambered fire door ring 14 and enters `the 'Xfire door .opening into the fire box at all points because the air chamber extends completely about all sides of the opening; while some of the .air will pass through the space or opening 29 beneath the shovel shield 28. The vair passing intermediate of the shovel shieldand the tire door opening flange 13 protec'ts the flange `as well as the :shield against overheating.

With the fire door ring-extending-to appoint beneath the firing deck or @floor .17 of thelcab,

it is apparent that in theevent-of r-tire box or VHue `explosions occurring, `the force `of such explosions will pass out and downwardly .through .the conduit or ,air chamber `and through the openingmade bythe open damper and thereforebe dischargedat a point below the ii'rng deck, .th-us protecting `vthe `enginecrew frominjuryaaid the dangers at present encountered. because the usual lire door ring tion and thus also' to reduce the smoke` emitted at the stacker the locomotive; and when the damper has been adjusted or opened to the desired degree, it may be set vat such yadjusted position .by Asimply screwing clamp member or lever 43 into clamping relation with the `damper 4control lever 38.

As previously stated, I have, 'for purpose .of exemplification, .shown my invention applied to a locomotive ireboX having what is known as the Franklin butter-flytype of pneumatic door, but it is apparent that the .invention is `applicable to other types with but slight variations in contour to Vsuit the type of fire box; and while Vthe exemplifica- .tion lis believed lto `betl'JeL-beSt adaptation of the invention, described in terms employed vmerely as terms ofy description and not as terms of limitation, modifications may be made without, however, departing from the spirit of my invention;

What I claim is:

1. A fire box providedwith a fire door opening, a hollow ring disposed about said opening and secured to the fire box, said ring providing an air chamber about all sides of the opening and entirely open to said opening, an air conducting extension secured to the lower side of said ring and leading to a f point beneath the iiring deck of the tire box and open at the bottom, a pivotally mounted closure memberfor the open bottom of said extension; anda reciprocatingly mounted lever for controlling said closuremember.

2.111 combination with a locomotive fire box having a. fire door opening, chambered means secured to the irebox aboutv said openy ing with the chamber arranged in communication with all sides of the opening, said meanshavingan air admitting portion extending downwardly along the rear wall of the {ire-box to a point beneath the firing deck ofthe locomotive and being open at the bottom, a damper hingedly secured to said portion for controlling said open end, and a reciprocatingly mounted lever operable from the firing deck whereby 'said damper `may be controlled and locked in adjusted positions.

3. A fire box provided wit-h a ire door opening, a hollow open sided member secured with its open side to the rear wall of the fire box and disposed entirely about said opening and communicatingwith all sides of said opening, said member 4having an air admit-V cured to ysaid ring `for controlling said open bottom; an operating lever slidably secured to said portion .and operatively connected` with said damper, mea-ns for locking said lever with the damper in adjusted positions,

and a shovel shield integral with said ring and disposed inwardly into the fire-door opening in spaced relation with the fire-box wall to provide an air space therebetween.

HOWARD H. LANNING.

ting portion extending downwardly beneath v the tiring deck of the iire box and having an i air inlet at the bottom, a movable closure ring having side walls adapted to fit against the rear wall of the fire-box to provide the air chamber about the opening, studs extending rearwardly fromthe front wall of the l ring adapted to receive fasteningV bolts for securing the ring to the fire-box, a portion integral withthe bottom of said ring and arranged to extend beneath the 'firing deck of the fire box to provide an air admitting channel communicating with the bottom and sides of the ring, said depending portion being open at its bottom, a damper *n pivotally se-