US1512392A

US1512392A - Stoker

Info

Publication number: US1512392A
Application number: US704589A
Authority: US
Inventors: Allen G Barhite
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-04-07
Filing date: 1924-04-07
Publication date: 1924-10-21
Anticipated expiration: 1941-10-21

Description

Oct. 21 1924. 1,512,392

A. G. B ARHITE S-TOKER Filed Abru v. 1924 llllllllllllll M M u ALLEN e, BAREITTB, oie onions-o, ILLINOIS.

STOKER.

Application filed April 7,

To all inn-"1022a it may COT/CF17? it known that Bimini: a citizen of the United States ant a resident t Chicago, in the county of Cool; and of Illinois, have invented certain new ant useful Improvements in Stoker's of which the following is a description reieren e being' had to the acc ompanying; drawing, which forms a part of my specification.

My invention relates to stoke s for sta tionary boilers or for marine boilers which are usually arranged side by side; the vention relating more especially to an'overteed Stoker whereby a battery of boilers may be simultaneously supplied with fuel oeliverejd into the firebox at a point above the Cirates of the boilers. v

One object of my invention is to provide 'stoker me-"hanismwhereby the fuel will be automatically delivered in a-substantially even or uniform manner throughout the nre box ofthe boilers, nameli' throughout the i entire grate bar area of the firebox from front torear of the vfirebox and uniform combustion maintained.

The objects and advantages of niy'invenmore fully com ehended til the follow' lg detailed desc lotion of the accompanying drawing;-wherein: p

l igure l a sectional elevation of a portion of the firebox of aboiler provided with m. improved stoke-r mechc nisn which is shown in elevation Figure 2 detail se-tional. vieuu in per spec-tire of the fuel carrying and feeding portion of the Stoker. j

Figure 3 is a detail sectional View taken substantially on the line 3-3 of Figure 1 looking in the direction of the arrows.

Figure -l is a detailview in side elevation of the fuel arrying and feed niechanisn i shown in Figure. 2, showing the opposit side thereof. i i

In the particular oxenu ilification of tle invention; a portion or the lireh 2; end a boileris illustrated at 10, with portion .o" the inner wall shown at 11 and the cute wall shown at '12; the firebox being provided with suitableg'rate construction as illustrated at 13. The outerwall 12 is provided with the usual firedoor at 14.- at a point slightly above the planeot the grate-bars and this wall at. apolnt above the l1sual fire-- door-Ll is provided with-a doorlfi extending Banrnrn,

1824. Serial No, 7044 5389.

substantially throughout thewidth ofthe firebox. The door 15 is mounted to-slide x'eidically into and out 01": closed position and is shown controlled by means of a suitable cable or chain 16 disposed about-a pulley ii? securedto the wall of the firebox; the cable or chain extending to a suitable point wl mechanism common to all doors 15 of each boiler of the battery inorder that these doors may be simultaneously, controlled.

At a point removed fromthe outer wall o the firebox I provide a-suitable supportif frame, composed of standardsas at 18, which may be provided with an electric motor as at l9 l -with the V armature-shaft thereof provided with a belt or chain 20. This belt 20 extends about a pulley 21secured to the end oft-a soat't 22 which has proper bearing in the upper part of the standa ds of the supporting frame 18 and whichshatt extends transversely of theentire battery o" boilers; a method of supportinn; the shaft being more clearly shown in Figure i, j r V i The shaft 22 at points substantially in ment with the center of each, door openi- 2' l is provided a cogz wheol 23 arranged inmesh wit is 0? length suificient to extend practically to the inner wall T? i olf the firebox and still remain in mesh with the co wheel.

nape construction shown in F gure 3, for major portion of its length; i the upstanding portion being; provided rthe teeth with which the cog-wheel-is l in mesh. The lower laterallydisposed po'r tions 01, the rack-bar are arranged to-travel vbetween the lower roller 25 and the upper pair of rollers '26 disposed ea h side of the upstanding toothed portion of thebar;

or 24 may be ofthe inverted ,re it be controlled by any suitable to be of length substantially equal to the door opening 15 and therefore substantially equal to the width of the firebox; the container 28 being preferably provided with an arcuate bottom 29, shown riveted to the bar 27 and also provided with

end walls

30, 31 to provide a sector-shaped container. The container is also provided with

side walls

32 and 33 pivotally secured to the end walls as at 34 and 35, respectively; that is to say the side wall 32 is pivoted and. disposed within the

end walls

30 and 31, to permit the side wall 32 to swing within the container from its normal position shown in full lines in Figure 2, to the dotted line position shown in said figure; while side wall 33 is arranged to lap or abut against the end walls and is therefore pivoted to the end wall exterior. The side wall 33 is intended to swing outwardly away from the side of the container when the latter is traveling through the firebox opening 15.

The.

pivotal points

34 and 35 are spaced apart to provide the container 28' with an opening in the top through which the fuel is introduced by means of a suitable chute 36 leading from an overhead hopper as illustrated; a portion of the hopper being shown at 37 in Figure 1. The chute 36, it will be understood, may be of width and length to correspond with the width and length of the opening in the top of each container, a separate chute 36 being provided for each container. The side wall 33 is shown provided with an upstanding flange or portion 38 which is adapted to engage the side of the chute 36, when the container 28 is in position therebeneath, so as to hold the side wall .33 in closed position while the container is being filled with fuel; and this side wall 33 may also be provided with av depending extension as at 39 adapted to abut against the fire-door 15 when the latter is in closed position, thus ensuring the side wall being maintained in closed position.

The chute 36 may be provided with any suitable closure at its bottom, as for example a swinging door 40 suspended by links 41 arranged at each end of the chute. One of the links 41 may be provided with a. suitable spring as at 42 whereby the swinging door 40 is returned to and held in closed position; the door 40 at one side, being shown provided with an upstanding flange 43 on the side to which the door is swung when opened; said flange limiting movement of the swinging door toward the opposite side of the chute through the act-ion of the spring. One or both of the links 41 may be provided with a suitable pull rod or cord as at 44, op erable from a suitable common point to enable the operator to simultaneously open all of the chutes so that all of the containers may be filled with fuel. As soon as the pull Q 99 's i rel as d he swingiag do rs 40 of the respective chutes will move to closed position and prevent further discharge of fuel.

The pivot or journal 34 of the swinging side 32, at one end of the container, is provided with an arm 45 fixedly secured thereto and this arm, together with swinging side 32 are held in normal and returned to closed position by means of a suitable spring as at 46 which may also be secured in a suitable manner to one of the end walls of the container. Th free end of the arm 45 has a cable 47 secured thereto and this cable is passed about a pulley 43 secured on the end wall of the container at a point adjacent to the opposite or forward side wall as shown in Figure 4; while the oppositeend of the cable 47 is secured to a suitable drum 49 D'IOLlDtQd on the shaft- 22 on which cog-wheel 23 is secured.

The drum 49 is of smaller diameter and circumference than the diameter of cogwheel 23, with the result that the cable 47 will be unwound at a slower speed than the travel of the rack-bar 24 and the container 28. As aresult of this construction and arrangement, the cable 47 (which at all times is maintained taut) will cause the side 32 to be slowly swung through the container 28 while the latter is traveling at a slightly greater speed toward the inner wall of the firebox. This inward swinging movement of th wall 32 will continuously and gradually force the fuel out through the freely pivoted side 33 while the container is traveling into the firebox, and cause the fuel to be more or less evenly or uniformly distributed throughout theentire grate-bar of the firebox.

In operation, all of the containers 28 are initially positioned beneath their respective chutes 36 and the operator, by means of pull rods or cables 44, moves the swinging doors 4f) beneath the chutes into open position thereby allowing the fuel topass through the open tops of the containers until the latter are filled, at which time the cables or pull rods 44 are released, which permits the slide doors 40, through the actions of the springs 42. to return to closed position and shut off the further discharge of fuel.

The slide doors 15 of the battery of fireboxes are then drawn upward through the medium of pull cords 16. at which time the motor 19 is set in operation, causing shaft 22 (which extends throughout the length of the bat tery of fireboxes and which is provided with a cog-wheel and a drum for each container) to be revolved. This will cause the rack-bar with the container to be forced through door gpening 15 toward the inner wall of the fire-- ox. doors 15 of the firebox. as well as the movement of the containers '28 away from their respective chutes 36, releases the swinging side wall 33 and allows it-to swing into open The upward movement of the slide pesitiea through the ction or; the pressure rent . of the side wall 32 induced by the nnwiucw,

of the cable 47 at a slower speed than the speed of travel of the rack-bar, i'QSlll-tlilg from the differences in diameter of the con; Wheel and the diameter of the drum. As a, result, the fuel gradually forced eat of the containers by the sweeping action of the side wall 82. Reverse moi ment the motor will cause the rack-bars with the containers to be withdrawn from the firebo 9 and at the same time the respective cao 47 will also be wound up on their respective drums 49, so that when the containers h ve returned to loading position beneath their respective chutes, the swinging have returned to closed position. In order that the swinging sides 32 cannot move outwardly, through the pressure of the fuel, the container is provided with a flange as at 50 which will hold the side wall against outward movement.

I'have shown what I believe to be a simple embodiment of my invention, which has bee described in terms employed merely as terms.

of description and not as terms of limitation, as structural modifications are possible and may be made without, however, depart ing from the spirit of my invention.

What I claim is:

1. A stoker, comprising a horizontally traveling member, a fuel receiving container secured to said member, the opposite sides of the container being pivoted to swing, with one of said sides be ng adapted to swing away from the container, while the other side is adapted to swing through the container, power imparting means whereby the traveling member and the container are made to move through a firebox toward the inner wall thereof, and means controlled. by said power imparting means, whereby said second mentioned side of the container is moved toward the opposite side of the container.

2. A stoker, comprising a travelingmeniber adapted to move into the firebox of a boiler, a fuel receiving container sr-icnrcx to said member and provided with movable sides, the forward side being adapted to move outwardly into open position, while the opposite side is adapted to move into the container toward the first mentioned side, means whereby said traveling member and the container are moved into the firebox, and

. means, operable with said first means, wheresidesv w ll and having a, fuel-receiving opening; in its top, the opposite side wall of the container being pivotally monntct, the one side wall being adapted to swing away from the tainer into open position, while the side wall is adapted to swing thin container to force the the! through mentioned site, a driving shaft provided.- ..with a cog-wheel and a drum of difierc diameters, the conewheel'bemg arranged in by said second side wall is forced into the container while the latter is traveling into the firebox. V i

4:. A stolrer, comprising a fuel holding container provided with a fuel receiving opening in the top, one side wall of the container being arranged to move outwardly, while the oppositeside wall is arranged to move toward said first side wall, means whereby said second mentioned wall is yield ingly held in closed position, a horizontally traveling arm to which the containeris scoured, power imparting means whereby said arm with the container is caused to travel into and out of the firebox of a boiler, and means controlled by said power imparting mean whereby said second mentioned side wall of the container is caused to move toward the first mentioned side wall and the fuel thereby forced out of the container.

5. In a stoker of the character described,

a horizontally traveling rack-bar, a fuelholding container secured to the forward 6. In a stolrer of the character described, I

the combination of anoverhead fuel supply chute, a container provided wit-h an opening in 1ts top adapted to be positioned beneath the chute, the forward side wall of the contamer being pivoted to swing outwardly,

while the opposite orrear side wall of the container is adapted to move through the container toward said forward side wall, a supporting frame, a rack-bar mounted on the frame to travel horizontally and to'carry said container, a power shaft mounted in said frame and provided with a pinion meshing with the rack-bar and with a drum of smaller diameter than the pinion, and a flexible connection between the drum and said rear side wall, said connection being so arranged that a pull on the rear side wall is exerted while the rack-bar and the container are traveling into the firebox of a boiler.

7. A stoker of the character described, comprising a supporting frame provided with a power-shaft and with rollers arranged in different horizontal planes, a bar arranged to travel horizontally between the rollers in the different planes, a fuel holding member secured to the forward end of the rack-bar, the forward side wall of the member being adapted to move outwardly while the rear side wall is adapted to move forwardly through the member means whereby the side walls are yieldingly held in normal position, means intermediate of the power shaft and said bar whereby the latter is caused to travel horizontally, and means intermediate of the power shaft and said rear side wall of the member whereby said side wall is caused to move forwardly while the member is traveling forwardly into the the box of a boiler.

8. A Stoker of the character described, comprising an overhead chute, spring con trolled closure means for said chute, a fuel holding container adapted to travel horizontally toward the inner wall of a firebox, one wall of the container being adapted to move through the container toward the opposite side to force the fuel from the container, power means whereby the container is made to travel through the firebox, and means intermediate of said power means and said movable wall of the container whereby the latter is progressively moved toward the opposite side of the container while the latter is being fed into the firebox.

ALLEN G. BARHITE.

lVitnesses Z G. HEIDMAN,

F. A. FLoRnLL.